Viessmann Vitodens 200-W System Technical Data Manual

31 to 370 MBH / 9 to 105 kW Multi-boiler installation 320 to 1480 MBH/ Vitodens 200-W WB2B Series Gas-Fired Wall-Mounted Condensing Boiler with modulating MatriX cylinder burner for room air independent operation (using a direct vent system) or room air dependent operation For Natural Gas and Liquid Propane Gas Heating input 31 to 370 MBH for NG and LPG 9 to 105 kW Technical Data Manual Model Nos. and pricing: see Price List  This trademark is registered with the U.S. Patent and Trademark Office. 5369 295 v1.2 08/2010

combustion management system and powerful control technology, the new generation Vitodens 200-W gas-fired wall-mount condensing boiler delivers unparalleled performance, reliability and comfort. The benefits at a glance:
Best value in its class with new industry-leading technology and the most standard features.
Highest Efficiency up to 98% at full modulation and up to 96.1% A.F.U.E. CSA thermal efficiency rating to ANSI Z.21.13/CSA 4.9 of 94.5% (for model WB2B 105 only). Energy Star and the CSA Energy Performance are not applicable for model WB2B 105.
Lasting performance with industry-leading Viessmann made SA240 316 Ti stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV.
Low Emission Combustion with Viessmann made stainless steel MatriX cylinder burner. Factory calibrated.
Fast Installation and Reduced Maintenance with Lambda Pro, industry-first intelligent combustion management system: Adjusts automatically to gas type and quality. No fuel conversion kit required.
Powerful and User-friendly Viessmann Vitotronic on-board multi-function outdoor reset boiler and system control for multi-temperature space and DHW heating.
Expanded Application Range with increased capacity up to 370 MBH. Multi-boiler installation up to 1480 MBH with up to 4 boilers (models WB2B 45, 60, 80, 105).
Greater Venting Flexibility with increased vent length (up to 180 ft. / 55 m) and multiple venting options. - Horizontal or vertical sealed combustion coaxial venting (factory supplied). - Horizontal, vertical or hybrid sealed combustion double-pipe venting (field supplied). - Horizontal or vertical single-wall venting (field supplied). ‘
Compact, Esthetic Product Design and zero clearance to combustibles.
Extremely Quiet Operation; quieter than most refrigerators.
True High-Altitude Operation up to 10,000 ft. / 3,000 m with simple electronic adjustment. 5369 295 v1.2

on-board outdoor reset control Boiler may not look exactly as illustrated. Cross-Section 3 5369 295 v1.2

19 26 35 45 60 80 105*A Natural gas / Liquid propane gas CSA input CSA output/DOE*1 heating capacity MBH kW MBH kW 31-67 9-20 28-61 8-18 31-93 9-27 28-85 8-25 31-125 9-37 28-114 8-33 60-160 17-47 55-146 16-43 60-212 17-62 55-194 16-57 104-285 30-83 95-260 28-76 104-370 30-108 98-350 29-103 Net I=B=R rating*2 MBH 53 74 99 127 169 226 304 Heat exchanger surface area ft.2 m2 10.23 0.95 10.23 0.95 10.23 0.95 15.76 1.46 15.76 1.46 28.88 2.68 28.88 2.68 Min. gas supply pressure Natural gas Liquid propane gas “w.c. “w.c. 4 10 4 10 4 10 4 10 4 10 4 10 4 10 Max. gas supply pressure*3 Natural gas Liquid propane gas “w.c. “w.c. 14 14 14 14 14 14 14 14 14 14 14 14 14 14 A.F.U.E. % 96.1 96.1 96.1 96.1 96.1 96.1 CSA thermal efficiency ANSI Z21.13/CSA 4.9 % 94.5 Weight lbs kg 102 46 102 46 102 46 155 70 155 70 225 102 225 102 Boiler water content USG L 0.87 3.3 0.87 3.30 0.87 3.3 1.9 7.2 1.9 7.2 3.4 12.8 3.4 12.8 Boiler max. flow rate*4 GPM L/h 6.2 1400 6.2 1400 6.2 1400 15.4 3500 15.4 3500 35.2 8000 35.2 8000 Max. operating pressure at 210ºF / 99ºC psig bar 45 3 45 3 45 3 60 4 60 4 60 4 60 4 Boiler water temperature – Adjustable high limit (AHL) range space heating (steady state) DHW production – Fixed high limit (FHL) ºF/ ºC ºF/ ºC ºF/ºC 68 to 165 / 20 to 74 165 / 74 210/99 68 to 176 / 20 to 80 176 / 80 210/99 Boiler connections Boiler heating supply and return NPTM “ Pressure relief valve NPTF “ Drain valve (male thread) Boiler supply/return for indirect-fired DHW storage tank NPT” (field supplied) Gas valve connection NPTF ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ 1¼ ¾ ¾ 1¼ 1 1¼ ¾ ¾ 1¼ 1 1¼ ¾ ¾ 1¼ 1 1¼ ¾ ¾ 1¼ 1 *A For high altitude installations (5,000 - 10,000 ft.), the input for model WB2B 105 will have an altitude de-ration of 14% for 5,000 ft. and 28% for 10,000 ft. (average of 2.8% / 1,000 ft.). *1 Output based on 140ºF / 60ºC, 120ºF / 49ºC system supply/return temperature. *2 Net I=B=R rating based on piping and pick-up allowance of 1.15. *3 If the gas supply pressure exceeds the maximum gas supply pressure value, a separate gas pressure regulator must be installed upstream of the heating system. *4 See “Typical System Flow Rates” on page 11 in this manual. 5369 295 v1.2

Boiler Model Model No. WB2B- 19 26 35 45 60 80 105*A Dimensions Overall depth Overall width Overall height Height with flue gas elbow (accessory) inches mm inches mm inches mm inches mm 14 360 17¾ 450 33½ 850 44 1116 14 360 17¾ 450 33½ 850 44 1116 14 360 17¾ 450 33½ 850 44 1116 15 380 19 480 33½ 850 47¼ 1200 15 380 19 480 33½ 850 47¼ 1200 21 530 19 480 33½ 850 47¼*9 1200 21 530 19 480 33½ 850 47¼*9 1200 Flue gas*5 Temperature (at boiler return temperature of 86ºF / 30ºC) – at rated full load – at rated partial load Temperature (at boiler return temperature of 140ºF / 60ºC) ºF/ºC ºF/ºC ºF/ºC 113/45 95/35 154/68 113/45 95/35 158/70 113/45 95/35 158/70 95/35 91/33 149/65 104/40 95/35 158/70 95/35 91/33 149/65 104/40 95/35 158/70 Average condensate flow rate*6 with natural gas and TS/TR =104/86ºF / 40/30ºC USG/day L/day 2.6-3.4 10-12 2.9-3.4 11-13 4-4.5 15-17 3.7-5 14-19 6-7.4 23-28 6.6-7.9 25-30 9.5-10.5 35-40 Condensate connection*7 hose nozzle ∅in 1 1 1 1 1 1 1 Boiler flue gas connection*8 ∅ in/mm 23/8 /60 23/8 /60 23/8 /60 3¼/80 3¼/80 43/8 /110 43/8 /110 Combustion air supply connection (coaxial)*8 outer ∅in/mm 4/100 4/100 4/100 5/125 5/125 6/150 6/150 *A For high altitude installations (5,000 - 10,000 ft.), the input for model WB2B 105 will have an altitude de-ration of 14% for 5,000 ft. and 28% for 10,000 ft. (average of 2.8% / 1,000 ft.). *5 Measured flue gas temperature with a combustion air temperature of 68°F / 20°C. *6 Based on typical boiler cycles, including partial load conditions. *7 Requires 1” / 25 mm tubing. See the Installation Instructions of the Vitodens 200-W, WB2B for details. *8 For side wall vent installations (coaxial system): Do not exceed max. equivalent length specified in the Installation Instructions of the Vitodens 200-W, WB2B Venting System. A maximum of 5 elbows may be installed in the vent system. Do not attempt to common-vent Vitodens 200-W with any other appliance. Venting material to be supplied by Viessmann only; side wall vent installation must include Viessmann protective screen! For details refer to the Installation Instructions for the Vitodens 200-W, WB2B Venting System. *9 Add 2½” / 65 mm for coaxial vent pipe transition adaptor.  For information regarding other Viessmann System Technology componentry, please reference documentation of respective product. 5369 295 v1.2

55/8” / 143 mm 1¾” / 44 mm 141/8” / 360 mm 2¾” / 70 mm 2½” / 65 mm 7” / 177 mm 13¾” / 348 mm 87/8” / 225 mm 4” / 102 mm 4” / 102 mm 33½” / 850 mm 12” / 300 mm 2¾” / 70 mm 17¾” / 450 mm BS BR PRV BD DS GC DR BF *1 DHW Connections (Field Supplied) EXT EXT Floor line 78” / 1975 mm for single boiler installation Fig. 1 Fig. 2 Fig. 3 6 *1 Models WB2B 19, 26, 35 Legend BD Boiler Drain BR Boiler Return BS Boiler Supply AV Air Vent (not shown) GC Gas Connection, ¾” NPT PRV Pressure Relief Valve BF Boiler Fill PG Pressure Gage EXT Extension Adaptors, ¾” NPT DR Boiler heating return for domestic hot water production ¾” (field supplied) DS Boiler heating supply for domestic hot water production ¾” (field supplied) *1 See page 38 for alternate DHW connection. 5369 295 v1.2

9½” / 240 mm 35½” / 902 mm 39” / 996 mm 41¾” / 1061 mm 51” / 1301 mm 78” / 1975 mm for single boiler installation 9½” / 240 mm 6½” / 165 mm 9½” / 240 mm 3” / 80 mm 15¾” / 400 mm 6½” /165 mm 5½” / 146 mm 4” / 100 mm 15” / 380 mm Ø 5” / 125 mm 33½ “/ 850 mm 12” / 305 mm PRV BD GC BF PG Floor line BS BR DS DR *1 DHW Connections (Field Supplied) Fig. 4 Fig. 5 Fig. 6 7 Models WB2B 45, 60 Legend BD Boiler Drain BR Boiler Return BS Boiler Supply AV Air Vent (not shown) GC Gas Connection, 1” NPT PRV Pressure Relief Valve BF Boiler Fill PG Pressure Gage DR Boiler heating return for domestic hot water production 1¼” (field supplied) DS Boiler heating supply for domestic hot water production 1¼” (field supplied) *1 See page 38 for alternate DHW connection. 5369 295 v1.2

9½” / 240mm 15¾” / 400mm 6½” / 165mm 9½” / 240mm 9½” / 236mm 4” / 102mm 21” / 530mm 15¾” / 400mm Floor line PRV BD GC BF PG 78” / 1975 mm for single boiler installation BS BR DS *1 DHW Connections (Field Supplied) DR Fig. 7 Fig. 8 11 5/8“ / 295mm for WB2B 80-105 using the coaxial vent system Fig. 9 8 Models WB2B 80, 105 Legend BD Boiler Drain BR Boiler Return BS Boiler Supply GC Gas Connection, 1” NPT PRV Pressure Relief Valve BF Boiler Fill PG Pressure Gage DR Boiler heating return for domestic hot water production 1¼” DS Boiler heating supply for domestic hot water production 1¼” *1 See page 38 for alternate DHW connection. 5369 295 v1.2

Minimum Clearances to Combustibles Top Front Rear Left Right Vent pipe*1 0 0 AL, CL 0 0 0 0 AL= Alcove CL= Closet *1Refer to the Installation Instructions of the Vitodens 200-W, WB2B Venting System for details. Please note: The Vitodens boiler has passed the zero inches vent clearance to combustibles testing requirements dictated by the Harmonized Standard ANSI Z21.13. CSA 4.9.2000 and therefore is listed for zero clearance to combustibles when vented with a single wall special venting system (AL-29-4C material). The zero inches vent clearance to combustibles for the Vitodens boiler supercedes the clearance to combustibles listing that appears on the special venting system label. 5369 295 v1.2 Front 12” / 305 mm Top 12”/305 mm 0”/mm Side 0”/mm Back Side 28” / 700 mm Fig. 10

The Vitodens 200-W, WB2B is designed for closed loop, forced circulation hot water heating systems only. Pressure drop (primary circuit) for Vitodens 200-W, WB2B 19, 26, 35 For sizing an on-site circulation system. Max. flow rate: 1400 L/h / 6.2 GPM Pressure drop (primary circuit) for Vitodens 200-W, WB2B 45, 60 For sizing an on-site circulation system. Max. flow rate 3500 L/h / 15.4 USGPM Pressure drop (primary circuit) for Vitodens 200-W, WB2B 80, 105 For sizing an on-site circulation system. Max. flow rate 8000 L/h / 35.2 USGPM Use standard friction loss method for pipe sizing. Observe boiler maximum and minimum flow rate limitations. If system flow rate exceeds boiler maximum flow rate (as stated above), falls below the minimum flow rate or if system flow rate is unknown, Viessmann strongly recommends the installation of a low-loss header. An alternative method may be used, such as primary secondary piping using closely spaced tees. A low-loss header offers additional benefits not provided by a pair of closely spaced tees. Viessmann therefore strongly recommends and prefers the use of a low-loss header over closely spaced tees. See page 13 for low-loss header information. 5369 295 v1.2 0 500 1000 1500 0 1 2 3 4 5 6 0 3.3 6.6 9.8 13.1 16.4 19.7 2000 l/h 7 8 23 26 Supply head pressure (water) 0 2.2 4.4 6.6 8.8 GPM H(ft.) H(m) Fig. 11 H(ft.) H(m) 20.1 6.1 16.7 5.1 13.4 4.1 10.0 3.1 6.7 2.0 3.4 1.0 0 0 0 0 500 1000 1500 2000 2500 3000 3500 l/h 2.2 4.4 6.6 8.8 11 13.2 15.4 GPM Supply head pressure (water) Fig. 12 H(ft.) H(m) 33.5 10.2 30.1 9.2 8.2 26.8 7.1 23.4 6.1 20.1 5.1 16.7 4.1 13.4 3.1 10.0 2.0 6.7 1.0 3.4 0 0 0 0 1000 2000 3000 4000 5000 6000 7000 8000 l/h 4.4 8.8 13.2 17.6 22.0 26.4 30.8 35.2 GPM Supply head pressure (water) Fig. 13

11 Typical System Flow Rates Table 2. Model WB2B 19 26 35 ∆∆∆∆t for NG/LPG Output (NG/LPG) Btu/h 61 000 85 000 114 000 20ºF rise (GPM) 6.1 8.5 11.4 25ºF rise (GPM) 4.9 6.8 9.1 30ºF rise (GPM) 4.1 5.7 7.6 35ºF rise (GPM) 3.5 4.9 6.5 40ºF rise (GPM) 3.1 4.3 5.7 Table 3. Model WB2B 45 60 ∆∆∆∆t for NG/LPG Output (NG/LPG) Btu/h 146 000 194 000 20ºF rise (GPM) 14.6 19.4 25ºF rise (GPM) 11.7 15.5 30ºF rise (GPM) 9.7 12.9 35ºF rise (GPM) 8.3 11.1 40ºF rise (GPM) 7.3 9.7 Table 4. Model WB2B 80 105 ∆∆∆∆t for NG/LPG Output (NG/LPG) Btu/h 260 000 350 000 20ºF rise (GPM) 26.0 35.0 25ºF rise (GPM) 20.8 28.0 30ºF rise (GPM) 17.3 23.3 35ºF rise (GPM) 14.9 20.0 40ºF rise (GPM) 13.0 17.5 Use standard friction loss method for pipe sizing. Observe boiler maximum and minimum flow rate limitations. If system flow rate exceeds boiler maximum flow rate (as stated above), falls below the minimum flow rate or if system flow rate is unknown, Viessmann strongly recommends the installation of a low-loss header. Once the low-loss header is connected, the built-in low-loss header logic of the Vitodens 200-W boiler ensures the required ∆∆∆∆T across the system through the sensory communication between the low-loss header and the boiler. See page 13 for low-loss header information. 5369 295 v1.2 Boiler max. flow rate 1400 L/h (6.2 GPM) Boiler max. flow rate 3500 L/h (15.4 GPM) Boiler max. flow rate 8000 L/h (35.2 GPM)

Viessmann offers a variety of Grundfos heating circuit / boiler pumps which meet typical Vitodens system installation requirements (see “Heating circuit pump (field supplied)“ or “Boiler pump (field supplied)” in the Installation Examples starting on page 29). See tables below for recommended pumps. Refer to the graphs on page 10 for the proper waterside boiler friction loss calculations. Pump selection must be based on accurate system flow and pressure drop calculations (incl. DHW sizing). The following pumps have been selected based on boiler heat exchanger head loss and boiler piping to a low-loss header. Before using the following pumps for a DHW tank application, find out the proper pressure drop through the tank, the required temperature difference through the coil and system piping head loss of the domestic hot water. Table 5. Model WB2B 19 26 35 Flow rate 20 ºF ∆∆∆∆t 6.1 8.5 11.4 25 ºF ∆∆∆∆t 4.9 6.8 9.1 30 ºF ∆∆∆∆t 4.1 5.7 7.6 35 ºF ∆∆∆∆t 3.5 4.9 6.5 40 ºF ∆∆∆∆t 3.1 4.3 5.7 Flow limitation L/h / GPM 1400 / 6.2 Recommended boiler pumps Grundfos 15-58 (3-speed) Taco 00R Wilo Star S 21 FX Table 6. Model WB2B 45 Flow rate Boiler pressure drop (ft.) Recommended pump option 1 Grundfos Recommended pump option 2 Grundfos 20 ºF ∆∆∆∆t 14.6 15.8 UPS 26-99FC, 115V, Speed3 25 ºF ∆∆∆∆t 11.7 10.0 UPS 26-99FC, 115V, Speed2 UP 26-64F, 115V 30 ºF ∆∆∆∆t 9.7 7.5 UPS 26-99FC, 115V, Speed2 35 ºF ∆∆∆∆t 8.3 5.8 UPS 26-99FC, 115V, Speed1 40 ºF ∆∆∆∆t 7.3 4.2 UPS 26-99FC, 115V, Speed1 Flow limitation L/h / GPM 3500 / 15.4 Table 7. Model WB2B 60 Flow rate Boiler pressure drop (ft.) Recommended pump option 1 Grundfos Recommended pump option 2 Grundfos 20 ºF ∆∆∆∆t 19.4 Not Recommended Not Recommended 25 ºF ∆∆∆∆t 15.5 16.7 UPS 26-99FC, 115V, Speed3 30 ºF ∆∆∆∆t 12.9 12.6 UPS 26-99FC, 115V, Speed3 UP 26-64F, 115V 35 ºF ∆∆∆∆t 11.1 9.2 UPS 26-99FC, 115V, Speed2 UP 26-64F, 115V 40 ºF ∆∆∆∆t 9.7 7.5 UPS 26-99FC, 115V, Speed2 Flow limitation L/h / GPM 3500 / 15.4 5369 295 v1.2 IMPORTANT

13 Heating Circuit / Boiler Pumps (continued) Table 8. Model WB2B 80 Flow rate Boiler pressure drop (ft.) Recommended pump Grundfos 20 ºF ∆∆∆∆t 26.0 16.7 UPS 32-160/2, 115V, Speed1 25 ºF ∆∆∆∆t 20.8 9.2 UPS 26-99FC, 115V, Speed3 30 ºF ∆∆∆∆t 17.3 6.5 UPS 26-99FC, 115V, Speed2 35 ºF ∆∆∆∆t 14.9 4.8 UPS 26-99FC, 115V, Speed2 40 ºF ∆∆∆∆t 13.0 3.4 UPS 26-99FC, 115V, Speed2 Flow limitation L/h / GPM 8000 / 35.2 Table 9. Model WB2B 105 Flow rate Boiler pressure drop (ft.) Recommended pump Grundfos 20 ºF ∆∆∆∆t 35.0 30.0 UPS 32-160/2, 115V, Speed3 25 ºF ∆∆∆∆t 28.0 20.0 UPS 32-160/2, 115V, Speed2 30 ºF ∆∆∆∆t 23.3 12.5 UPS 32-160/2, 115V, Speed1 35 ºF ∆∆∆∆t 20.0 9.0 UPS 26-99FC, 115V, Speed3 40 ºF ∆∆∆∆t 17.5 6.4 UPS 26-99FC, 115V, Speed2 Flow limitation L/h / GPM 8000 / 35.2 Table 10. Sizing of Low-Loss Header in a Residential Single-Boiler Application Boiler Model No. of Boilers Boiler Max. Flow Rate Typical System Flow Rates Viessmann Temp. Sensor Required System ∆∆∆∆t *1 20 11.0 25 13.9 30 16.8 35 16.1 40 13.4 °F °C WB2B 19 1 6.1 1385 System Flow Rate LLH Required LLH Model 6.1 1385 Yes 80/50 4.9 1108 Optional 80/50 4.1 924 Optional 80/50 3.5 792 Optional 80/50 3.1 693 Optional 80/50 GPM L/h Yes WB2B 26 1 6.1 1385 System Flow Rate LLH Required LLH Model 8.5 1931 Yes 80/50 6.8 1544 Yes 80/50 5.7 1287 Optional 80/50 4.9 1103 Optional 80/50 4.3 965 Optional 80/50 GPM L/h Yes WB2B 35 1 6.1 1385 System Flow Rate LLH Required LLH Model 11.4 2589 Yes 80/50 9.1 2071 Yes 80/50 7.6 1726 Yes 80/50 6.5 1480 Yes 80/50 5.7 1295 Optional 80/50 GPM L/h Yes WB2B 45 1 15.4 3498 System Flow Rate LLH Required LLH Model 14.6 3316 Yes 80/50 11.7 2653 Optional 80/50 9.7 2211 Optional 80/50 8.3 1895 Optional 80/50 7.3 1658 Optional 80/50 GPM L/h Yes WB2B 60 1 15.4 3498 System Flow Rate LLH Required LLH Model 19.4 4406 Yes 120/80 15.5 3525 Yes 80/50 12.9 2937 Optional 80/50 11.1 2518 Optional 80/50 9.7 2203 Optional 80/50 GPM L/h Yes WB2B 80 1 35 7949 System Flow Rate LLH Required LLH Model 26.0 5905 Yes 120/80 20.8 4724 Yes 120/80 17.3 3937 Optional 120/80 14.9 3374 Optional 120/80 13.0 2953 Optional 120/80 GPM L/h Yes WB2B 105 1 35 7949 System Flow Rate LLH Required LLH Model 35.2 7949 Yes 120/80 28.0 6359 Yes 120/80 23.3 5300 Yes 120/80 20.0 4542 Optional 120/80 17.5 3975 Optional 120/80 GPM L/h Yes *1 For system ∆t < 20°F use low-loss header sizes for ∆t 20°F. 5369 295 v1.2

14 Low-Loss Header Application (continued) Table 11. Sizing of Low-Loss Header in a Commercial Multiple-Boiler Application Boiler Model No. of Boilers Boiler Max. Flow Rate Total Flow Rate Typical System Flow Rates Viessmann Temp.Sensor Required *2 System ∆∆∆∆t *1 20 11.0 25 13.9 30 16.8 35 16.1 40 13.4 °F °C WB2B 45 2 15.4 3498 30.8 6995 System Flow Rate LLH Required LLH Model 29.2 6632 Yes 120/80 23.4 5306 Yes 120/80 19.5 4421 Yes 120/80 16.7 3790 Yes 120/80 14.6 3316 Yes 120/80 GPM L/h Yes WB2B 45 3 15.4 3498 46.2 10493 System Flow Rate LLH Required LLH Model 43.8 9948 Yes 160/80 35.0 7958 Yes 120/80 29.2 6632 Yes 120/80 25.0 5685 Yes 120/80 21.9 4974 Yes 120/80 GPM L/h Yes WB2B 45 4 15.4 3498 61.6 13991 System Flow Rate LLH Required LLH Model 58.4 13264 Yes 200/120 46.7 10611 Yes 200/120 38.9 8843 Yes 160/80 33.4 7579 Yes 120/80 29.2 6632 Yes 120/80 GPM L/h Yes WB2B 60 2 15.4 3498 30.8 6995 System Flow Rate LLH Required LLH Model 38.8 8812 Yes 160/80 31.0 7050 Yes 120/80 25.9 5875 Yes 120/80 22.2 5036 Yes 120/80 19.4 4406 Yes 120/80 GPM L/h Yes WB2B 60 3 15.4 3498 46.2 10493 System Flow Rate LLH Required LLH Model 58.2 13219 Yes 200/120 46.6 10575 Yes 200/120 38.8 8812 Yes 160/80 33.3 7554 Yes 120/80 29.1 6609 Yes 120/80 GPM L/h Yes WB2B 60 4 15.4 3498 61.6 13991 System Flow Rate LLH Required LLH Model 77.6 17625 Yes 200/120 62.1 14100 Yes 200/120 51.7 11750 Yes 200/120 44.3 10071 Yes 160/80 38.8 8812 Yes 160/80 GPM L/h Yes WB2B 80 2 35 7949 70 15899 System Flow Rate LLH Required LLH Model 52.0 11810 Yes 200/120 41.6 9448 Yes 160/80 34.7 7874 Yes 160/80 29.7 6749 Yes 160/80 26.0 5905 Yes 160/80 GPM L/h Yes WB2B 80 3 35 7949 105 23848 System Flow Rate LLH Required LLH Model 78.0 17716 Yes 200/120 62.4 14173 Yes 200/120 52.0 11810 Yes 200/120 44.6 10123 Yes 200/120 39.0 8858 Yes 160/80 GPM L/h Yes WB2B 80 4 35 7949 140 31797 System Flow Rate LLH Required LLH Model 104.0 23621 Yes 250/150 83.2 18897 Yes 250/150 69.3 15747 Yes 200/120 59.4 13498 Yes 200/120 52.0 11810 Yes 200/120 GPM L/h Yes WB2B 105 2 35 7949 70 15899 System Flow Rate LLH Required LLH Model 70 15899 Yes 200/120 56 12719 Yes 200/120 47 10599 Yes 200/120 40 9085 Yes 160/80 35 7949 Yes 160/80 GPM L/h Yes WB2B 105 3 35 7949 105 23848 System Flow Rate LLH Required LLH Model 105 23848 Yes 250/150 84 19078 Yes 250/150 70 15899 Yes 200/120 60 13627 Yes 200/120 53 11924 Yes 200/120 GPM L/h Yes WB2B 105 4 35 7949 140 31797 System Flow Rate LLH Required LLH Model 140 31797 Yes 300/200 112 25438 Yes 250/150 93 21198 Yes 250/150 80 18170 Yes 200/120 70 15899 Yes 200/120 GPM L/h Yes NOTE: for multiple boiler applications when using the the Vitodens 200-W, WB2B boilers, refer to the multiple boiler low-loss distribution manifold installation instructions. *1 For system ∆∆∆∆t < 20°F use low-loss header sizes for ∆∆∆∆t 20°F. *2 Low-Loss sensor - standard equipment of the Vitocontrol-S WB2B: for use in multiple boiler applications. 5369 295 v1.2

Vitodens 200-W boilers can be used in conjunction with the stand-alone DHW storage tanks offered by Viessmann. All Viessmann DHW storage tanks sold in North America are available in “Vitosilver” finish only. Size and select the DHW storage tank based on the forecasted DHW consumption of the building in question. For further technical information on DHW storage tanks, see the Vitocell-V Technical Data Manuals. For the connection of a stand-alone DHW tank, installation fittings (field supplied), an external circulating pump for DHW production (field supplied) and a DHW temperature sensor (optional equipment, see Viessmann Price List for order information) are required. Legend DR Boiler heating return for domestic hot water production DS Boiler heating supply for domestic hot water production HR Heating Return HS Heating Supply BD Boiler Drain BR Boiler Return BS Boiler Supply GC Gas Connection PRV Pressure Relief Valve BF Boiler Fill PG Pressure Gage (not shown) *1 See page 38 for alternate DHW connection. An adequately sized precharged expansion tank must be used. See Installation Examples for details. 5369 295 v1.2 DR HR HS DS Fig. 14 PRV BD GC BF BS BR DS *1 DHW Connections (Field Supplied) DR Fig. 15 IMPORTANT

DHW recirculation lines increase the level of comfort and convenience of the domestic hot water supply and reduce water consumption. These advantages directly derive from the immediate availability of domestic hot water at all draw points. Poor insulation of the DHW recirculation line, however, can result in considerable heat loss. Viessmann therefore recommends that effective insulation be provided and used for DHW recirculation lines of 23 ft. / 7 m in length or longer. Legend DCW Domestic Cold Water DHW Domestic Hot Water TPV Temperature and Pressure Relief Valve (on tank - not shown) R DHW Recirculation Line RP DHW Recirculation Pump 5369 295 v1.2 Vitocell-V stand-alone DHW storage tank DCW DCW DHW R RP Fig. 16

The Vitodens 200-W, models WB2B 19 to 35 comes with a template, which allows you to easily mark the location of the screws for the mounting bracket and the location of the flue gas pipe on the wall. 1. Loosen the screws at the bottom of the boiler. 2. Remove front enclosure panel. 3. Mount boiler onto the mounting bracket and connect boiler to the installation fittings. 5369 295 v1.2 A C B Fig. 17 A Reference point top edge Vitodens 200-W B Mounting bracket C Vitodens 200-W mounting template Legend 3. 2. 2x 1. Fig. 18

The Vitodens 200-W, models WB2B 45 to105 comes with a template, which allows you to easily mark the location of the screws for the mounting bracket and the location of the flue gas pipe on the wall. 1. Loosen the screws at the bottom of the boiler. 2. Remove front enclosure panel. 3. Mount boiler onto the mounting bracket and connect boiler to the installation fittings. 5369 295 v1.2 A C B A Reference point top edge Vitodens 200-W B Mounting bracket C Vitodens 200-W mounting template Fig. 19 Legend 2x 1. 3. 2. Fig. 20

19 Condensate Connection Install the condensate drain pipe with a suitable gradient. Discharge condensate from the boiler into the drainage system, either directly or (if required) via a neutralization unit (accessory). Pipe ventilation must take place between the siphon trap and the neutralization unit (if applicable). Condensate Connection for Vitodens 200-W, models WB2B 19, 26, 35 Condensate Connection for Vitodens 200-W, models WB2B 45, 60 Condensate Connection for Vitodens 200-W, models WB2B 80, 105 Condensate Drainage and Neutralization The condensate formed both in the condensing boiler and in the flue gas pipe must be discharged into the public sewage system in accordance with all applicable local regulations. The condensate produced by a gas-fired heating system has a pH value between 3 and 4. Some local codes may require the use of a separate neutralization unit to treat the aggressive and corrosive nature of the condensate. With a neutralization unit installed, all condensate from the boiler and the flue gas pipe enters into the neutralization unit where it is treated and released into the public sewage system with a safe pH value of above 6.5. The use of neutralization granulate (performing the neutralizing process) is dependent on the operation of the heating system. To determine the required refill amount, check granulate level several times during the first year of operation. In some cases one granulate fill may last an entire year. Contact Viessmann to order a neutralization unit for the Vitodens 200-W boiler. See Viessmann Price List for order information. The condensate discharge outlet to the drainage system connection must be clearly visible. It must be installed with a suitable gradient and provided with a stench trap. If the condensate outlet of the Vitodens 200-W boiler is lower than the drain, a condensate pump must be used. Only corrosion-resistant materials must be used for condensate drainage purposes (e.g. braided hose). Do not use galvanized materials or materials containing copper for piping, couplings etc. The condensate drain must have a trap to prevent flue gas leakage. Please note that other requirements might apply depending on local regulations and/or project-specific details. It is advisable to contact your local waterworks office (authority responsible for waste water regulations) well before commencing with the installation of the neutralization unit in order to establish details of local regulations that apply. The following table shows the concentration of (effluent) substances (e.g. heavy metals) contained in the waste water from the Vitodens 200-W condensing boiler. Table 12. Condensate (effluent) substances Values measured in mg/L (effluent) substances Vitodens 200-W Lead Cadmium Chromium Copper Nickel Zinc Tin < 0.01 < 0.005 < 0.01 < 0.01 < 0.01 < 0.05 < 0.05 5369 295 v1.2 IMPORTANT Fig. 21 Fig. 22 Fig. 23

Fig. 26 4 + ? OK 0 1 2 3 0 + RESET s ?F A 140 M o Boiler temp. 20 Venting Options For an overview of venting options refer to the appendix starting on page 42. For detailed information refer to the Installation Instructions for the Vitodens 200-W, WB2B Venting System. Electrical Connection For an overview of the required wiring refer to pages 39 (for WB2B 19 to 60) and 40 (for WB2B 80 and 105). Power Supply The Vitodens 200-W is shipped with a Power / Pump Module. The module requires a 120 VAC power supply from a wall receptacle. The module contains a 120/230 VAC step-up transformer to power the Vitodens 200-W with 230 VAC. Refer to the Installation Instructions shipped with the module for wiring details, or reference the “Overview of Electrical Connections” on pages 39 and 40 of this manual. Power Supply Connection of Accessories The power supply connection of accessories can be made directly at the boiler control. The connection is activated and deactivated with the system on/off switch. The mixing valve accessory kit and the Vitosolic control (if used) will require a separate 120 VAC power supply from the wall receptacle. Wire cabling required for:
outdoor temperature sensor
Vitotronic 200-H, HK1M mixing valve control
accessory kit for heating circuit with mixing valve
Vitotrol 200 remote control
Vitotrol 300 remote control
remote switching of operating mode
remote disable
alarm output On-Board Vitotronic 200, HO1 Outdoor Reset Control The on-board Vitodens menu-driven Vitotronic 200, HO1 control provides the following: 5369 295 v1.2 Vent Connection, models WB2B 19, 26, 35 (with optional air intake openings on sides) Vent Connection, models WB2B 45, 60, 80,105 Fig. 24 Fig. 25

Modular Structure The control unit contains: System on/off switch, override/emission test switch, fixed high limit, adjustable high limit, digital display, micro-computer, adjustment options for switching times, for temperatures during normal and reduced operation, domestic hot water temperature, adjustment options for heating curves, temperature scanning options, built-in diagnostic system and fuses, reset button, analogue pressure display. Programming Unit
Illuminated display with plain text support
Adjustment and display of temperatures and codes
All settings, main codings and fault messages shown in plain text
Holiday program
Party button for switching to ”normal operation” whenever required
Energy savings button for lowering the desired room temperature by approx. 3.6°F / 2°C in normal operation
Rotary selector for the temperature in standard mode
Keys: - Program selection - Holiday program - Party and economy mode - Temperature for reduced mode - DHW temperature - Emissions test function - Time/date Boiler-Specific Functions The control unit adjusts the boiler water temperature (= supply temperature of a direct-connected heating circuit and/or a heating circuit with mixing valve in conjunction with the accessory kit for a heating circuit with mixing valve) automatically and on a continuous basis to individual outdoor temperatures. The control has a DHW temperature controller with DHW priority switching (heating circuit pump off). Functions
Outdoor reset control of boiler water and/or supply temperature
Electronic maximum temperature limit
Demand-dependent heating circuit pump and burner OFF control
Anti-seizing pump protection
Maintenance display
Heating system frost protection
Integral diagnostic system
DHW temperature control with priority control

Auxiliary function for DHW heating (short-term heating to a higher temperature, gas fired central heating boiler)
Adjusting switching times for the DHW recirculation pump
0-10 V external signal input
Boiler pump contol output
Alarm output
Heating circuit pump control output
DHW pump control output
DHW recirculation pump control output Control Characteristics PI characteristics with modulating output. Time Switch Digital time switch.
Individual and 7-day program
Automatic daylight savings time changeover
Automatic function for DHW heating and DHW recirculation pump
Time, day and standard switching times for space heating, DHW heating and the DHW circulation pump are factory-set
Switching times are individually programmable, i.e. up to four switching periods per day Shortest switching interval: 10 minutes Power backup: 14 days. Setting the Heating Programs The heating system frost protection (see frost protection function) applies to all heating programs. You can select the following heating programs wiyh the program keys:
Heating and DHW
DHW only
Standby mode External heating program changeover. Summer Operation Heating program “w“ The burner is only activated upon a call for domestic hot water from the DHW storage tank (controlled by DHW tank temperature sensor). Frost protection
The frost protection function will be started when the ouside temperature drops below approx. 34°F / +1°C. With the frost protection function, the heating circuit pump will be switched ON and the boiler water is maintained at a lower temperature of approx. 68°F / 20° C. The DHW tank will be heated to approx. 68°F / +20°C.
The frost protection function will be stopped when the outside temperature rises above approx. 37°F / +3°C (default settings). Technical Data Rated supply voltage: 120 VAC Rated frequency: 60 Hz Rated current: 12 A Max. ambient temperature
at operation: 32 to 104ºF 0 to 40ºC Installation in living spaces or boiler rooms (standard ambient conditions)
when storing or transporting: –4 to +158ºF –20 to +70ºC Max. operating temp. setting (space heating): Models WB2B 19-60 165ºF / 74ºC Models WB2B 80-105 176ºF / 80ºC DHW production: Models WB2B 19-60 165ºF / 74ºC Models WB2B 80-105 176ºF / 80ºC Setting fixed high limit: 210ºF / 99ºC (not adjustable) Adjustment range of DHW tank set-point temperature: 50 to 154ºF 10 to 68ºC Adjustment range heating curves
Heating curve
slope 0.2 to 3.5
Heating curve
shift: –12 to +33ºC –13 to 40 K 5369 295 v1.2

The control unit regulates the boiler water temperature (= supply temperature of heating circuit without mixing valve) and the supply temperature of the heating circuit with mixing valve (in conjunction with the accessory kit for a heating circuit with mixing valve) according to the outdoor temperature. The boiler water temperature is automatically raised by 0 to 72 F / 0 to 40 K higher than the currently required set supply termperature (in the factory default setting the differential temperature is 14.4 F / 8 K). See Start-up/Service Instructions for coding address “9F” in coding level 2. The supply temperature that is required to achieve a given room temperature depends on the heating system and the thermal insulation of the building that is being heated. The adjustment of the two heating curves is used to match the boiler water temperature and the supply temperature to these conditions. The boiler water temperature is limited upwards by the fixed high limit and the temperature set for the electronic high limit. The supply temperature cannot rise above the boiler water temperature. Legend Low temperature heating system, e.g. radiant floor heating Medium temperature heating system, e.g. cast iron radiation, staple-up radiant floor heating High temperature heating system, e.g. fintube radiation, fan coils Boiler Temperature Sensor The boiler temperature sensor is connected at the control unit for weather-responsive operation and is built into the boiler. Max. ambient temperature
at operation: 32 to 266ºF 0 to 130ºC
when storing or transporting: – 4 to+158ºF –20 to +70ºC DHW Tank Temperature Sensor Part No. 7179 114 Supplied with:
Cable length approx. 13 ft. / 3.75 m, ready to plug in
All pipe connections are field supplied. Specification Max. ambient temperature
at operation: 32 to 194ºF 0 to 90ºC
when storing or transporting: – 4 to+158ºF –20 to+ 70ºC Outdoor Temperature Sensor Sensor location:
North or northwest wall of building
6.6 to 8.2 ft. / 2 to 2.5 m above ground or in case of a multi-storey building approx. halfway up the second floor Electrical connection:
2-wire cable, max. cable length 115 ft. / 35 m with a wire size of min. AWG 16 copper
Cable to the outdoor sensor must not be laid near line voltage wiring (120/240 V) Max. ambient temperature at operation, when storing or transporting: –40 to+158ºF –40 to +70ºC 5369 295 v1.2 0,2 2,4 2,6 2,8 3,0 3,2 3,4 90 80 70 60 50 40 30 0 -5 -10 -15 -20 5 10 2,0 2,2 0,4 0,6 0,8 1,0 1,2 1,4 -30 -25 1,8 1,6 Outdoor temperature Boiler water or flow temperature Room - set-point temperature 194 176 158 140 122 104 86 ºF / ºC ºC ºF 50 41 32 23 14 5 -4 -13 -22 95 35 86 30 77 25 68 20 60 15 50 10 41 5 ºF ºC Fig. 27 A C B Fig. 28 (dimensions in mm)

Mixing Valve Actuator Accessory Kit, Part No. 7133 392 The mixing valve actuator is mounted directly on the Viessmann ¾ to 2½“ mixing valve. The mixing valve actuator is a motor-driven control unit. The rotational direction is reversible. The mixing valve actuator comes with a plug-in connector for a heating circuit pump, supply temperature sensor (strap-on sensor with 19.7 ft. / 6 m connecting cable), power supply connecting cable (10 ft. / 3 m) and a connecting cable (10 ft. / 3 m) for the KM-BUS Expansion Module. Rated voltage: 120 VAC Rated frequency: 60 Hz Rated current: 4 (2) A Power consumption: 4 W Max. ambient temperature
at operation: 32 to 104ºF 0 to 40ºC
when storing
or transporting: –4 to +149ºF –20 to +65ºC Relay output for heating circuit pump: 4(2) A, 120 VAC Actuator torque: 3 Nm Time of 90 º
: 2 minutes Supply Temperature Sensor (strap-on sensor, included with mixing valve actuator accessory kit), Part No. 7133 895 Installed with a strapping band. Cable length 19.7 ft. / 6 m, ready to plug in. Max. ambient temperature
at operation: 32 to 212ºF –0 to 100ºC
when storing
or transporting: –4 to +149ºF –20 to +70ºC LON Communication Module Part No. 7179 113 Electronic PCB for data exchange with the Vitotronic 200-H, Vitocom 200 and for connecting to a higher level building management system. LON Connecting Cable (for data exchange between control units) Cable length 23 ft / 7m, fully wired LON Terminal End Resistor Part No. 7143 497 To terminate the LON BUS at the first and the last control unit. KM BUS Expansion Module Part No. 7133 393 To connect 2 to 9 devices (mixing valve actuator, Vitotrol, input module, etc.) to the single KM BUS connection of the boiler. Specification Lead lenght 10 ft / 3.0 m, fully wired Permissable ambient temperature - during operation 32 to 104°F 0 to 40°C - during storage and transport - 4 to+149°F -20 to +65°C Immersion temperature sensor Part No. 7173 488 To capture the low loss temperature Specification Lead length 12 ft / 3.75 m, fully wired Permissable ambient temperature - during operation 32 to 194°F 0 to 90°C - during storage and transport - 4 to+158°F -20 to +70°C 5369 295 v1.2 Fig. 29 (dimensions in mm) Fig. 30 (dimensions in mm) Fig. 31 Fig. 32 (dimensions in mm)

24 Vitotrol 200 Part No. 7450 017 KM BUS subscriber The Vitotrol 200 remote control regulates the heating program for one heating circuit and the required set room temperature in standard mode, from any room in the house. The Vitotrol 200 is equipped with backlit heating program selection keys as well as a party and economy key. The fault display shows faults on the control unit. WS function: Installation anywhere in the building. RS function: Installation in the main living room on an internal wall opposite radiators. Never install inside shelf units, recesses, immediately by a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.). The integral room tempearutre sensor captures the actual room temperature and effects any necessary corrections of the supply temperature as well as a rapid heat-up at the start of the heating operation (if appropriately programmed). Connection:
2-core lead, length max. 164 ft / 50 m (even if connecting several remote control units)
Never route this lead immediately next to 230/400 V cables
LV plug part of the standard delivery Specification Power supply via KM BUS Power consumption 0.2 W Protection class III Max. ambient temperature
at operation: 32 to 104ºF– 0 to 40ºC
when storing
or transporting: –4 to+149ºF –20 to +65 ºC Set room temp. range 50 to 86ºF 10 to 30ºC adjustable from 37 to 74ºF 3 to 23ºC or 63 to 99ºF 17 to 37ºC The set room temperature for reduced mode is adjusted at the control unit. Vitotrol 300 Part No. 7248 907 KM BUS subscriber The Vitotrol 300 remote control regulates the required set room temperature for one heating circuit in standard and reduced mode, the heating program and the switching times for central heating, DHW heating and the DHW circulation pump. The Vitotrol 300 provides a backlit display as well as backlit heating program keys, a party and economy key, automatic summer/winter time changeover, keys for holiday program, day and time. WS function: Installation at any point in the building. RS function: Installation in the main living room on an internal wall opposite radiators. Never install inside shelf units, niches, immediately by a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.) The integral room temperature sensor captures the actual room tempeture and affects any necessary correction of the supply temperature as well as a rapid heat-up at the start of the heating operation (if suitable encoded). Connection:
2-core lead, length max. 164 ft / 50 m (even if connecting several remote control units)
Never route this lead immediately next to 230/400 V cables
LV plug part of the standard delivery Specification Power supply via KM BUS Power consumption 0.5 W Protection class III Max. ambient temperature
at operation: 32 to 104ºF– 0 to 40ºC
when storing
or transporting: –4 to+149ºF –20 to +65ºC Set room temp. range for standard mode 50 to 86ºF 10 to30ºC adjustable from 37 to 74ºF 3 to 23ºC or 63 to 99ºF 17 to 37ºC for reduced mode 37 to 99ºF 3 to 37ºC Room Temperature Sensor, Part No. 7133 379 Separate room temperature sensor as supplement to the Vitotrol 200 and 300; to be used if the the Vitotrol 200 or 300 cannot be installed inside the main living room or in a suitable position where the unit can capture and adjust the temperature. Installation in the main living room on an internal wall opposite radiators. Never install inside shelf units, recesses, immediately by a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.). Connect the room temperature sensor to the Vitotrol 200 or 300. Electrical connection:
2-wire cable with a wire size of min. AWG 18 copper
The cable length between the control unit, remote control unit and room temperature sensor must not exceed 98 ft./30 m Max. ambient temperature
at operation: 32 to 104ºF– 0 to 40ºC
when storing
or transporting: –4 to+149ºF –20 to +65ºC 5369 295 v1.2 Fig. 33 (dimensions in mm) Fig. 34 (dimensions in mm) Fig. 35 (dimensions in mm)

Neutralization Unit for Single-Boiler Applications with neutralizing granulate for models WB2B 19, 26, 35 Part No. 7134 231 for models WB2B 45, 60 Part No. 7134 232 for models WB2B 80, 105 Part No. 7264 769 Neutralization Pellets for models WB2B 19, 26, 35, 45, 60 Part No. 9524 670 2 x 1.3 kg for refill or replacement purposes for models WB2B 80, 105 Part No. 9521 702 8 kg for refill or replacement purposes Fuel Conversion Label Kit (NG>LPG) Part No. 7428 427 (included in boiler technical literature set) The Vitodens 200-W, WB2B boiler comes factory set for operation with natural gas. All WB2B models can be field converted to operate with liquid propane gas (as well as back to natural gas as required). The kit includes instructions and labels for field conversion. Low-Loss Header –Type 80/50 Part No. 7134 230 (max. flow rate 17.6 GPM / 4 m3/h) –Type 120/80 Part No. 7134 244 (max. flow rate 35.2 GPM / 8 m3/h) –Type 160/80 Part No. 7134 293*1 (max. flow rate 44 GPM / 10 m3/h ) –Type 200/120 Part No. 7134 294*1 (max. flow rate 80 GPM / 18 m3/h ) When used in conjunction with the Vitodens 200-W boiler, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. It is recommended to use the low-loss header in applications in which the total system flow rate exceeds the maximum (or minimum) boiler flow rate. For maximum boiler flow rates, see pages 10 and 11 in this manual. Viessmann strongly recommends the use of a low-loss header in cases where the system head and flow rates are unknown. *1Floor-mounted version (typically used for multiple-boiler installations). 5369 295 v1.2 DN 40 Ø 145 310 Fig. 36 (dimensions in mm) DN 40 Ø 145 400 Fig. 37 (dimensions in mm) 400 476 50 185 90 300 Fig. 38 (dimensions in mm) Fig. 39

Low-Loss Header (continued) The temperature sensor connection [TS] typically located at the top of the low-loss header ensures low return temperatures to the Vitodens 200-W boiler at all times, increasing operational efficiency. In addition, the low-loss header helps eliminate air and debris [D] from the heating system. See figures on the right for an illustration of the principle of operation. The low-loss header is available in the following sizes. Select the size based on the maximum system flow rate of your application. Table 13. Model No. Max. system flow rate Type 80/50 17.6 GPM / 4 m3/h Type 120/80 35.2 GPM / 8 m3/h Type 160/80*1 44 GPM / 10 m3/h Type 200/120*1 80 GPM / 18 m3/h *1Floor-mounted version (typically used for multiple-boiler installations). Legend AB Air Bleed BR Boiler Return BS Boiler Supply BY Bypass (with laminar flow) D Debris and/or air DV Drain Valve SC Sensor Cable SR System Return SS System Supply TS Viessmann Temperature Sensor SW Sensor Well Use only a Viessmann supplied temperature sensor. Do not use any other manufacturer’s temperature sensor. Legend T1 Boiler supply temperature T2 Boiler return temperature T3 System supply temperature T4 System return temperature Vprimary Boiler circuit flow rate Vsecondary Heating circuit flow rate Vbypass Bypass flow rate Qprimary Heat supplied by boiler Qsecondary Heat consumed by system Vprimary < Vsecondary T1 > T3 T2 = T4 Qprimary = Qsecondary T1 ± 167°F / 75°C Vsecondary=Vprimary+Vbypass When installing a low-loss header, the system mixed supply temperature (T3) must be calculated as follows: T3= T1 × Vprimary+T4 Vbypass Vsecondary 5369 295 v1.2 DV BS SS SR BR TS BY AB D Low-loss header design (Type 80/50 or 120/80) SC SW Fig. 40 T1 T2 Vprimary Vsecondary T3 T4 Principle of Operation T4 Vbypass Fig. 41 IMPORTANT IMPORTANT

27 Standard Equipment The Vitodens 200-W gas-fired condensing boiler with Inox-Radial heat exchanger, modulating MatriX cylinder burner for liquid propane gas and natural gas (available on all models), comes standard with:
pressure gage
installation fittings with 30 psig pressure relief valve and air vent (no air vent for models WB2B 80 and 105)
boiler control unit with outdoor temperature sensor, power/pump module – The boiler comes prewired and fully piped internally for field connections and prewired. – Venting material (coaxial) is to be supplied by Viessmann only. Side wall vent installations must include Viessmann protective screen! – Enclosure finish: black steel, powder-coated white – The Vitodens 200-W comes ready for use with natural gas and can be fuel converted to liquid propane gas in the field. - Power/Pump module Wall mounting componentry The following wall mounting components are supplied with the Vitodens 200-W boiler:
Mounting bracket
Mounting bolts
Installation fittings
Screws for mounting bracket on – wood studs (2” x 4”) – metal studs – brick/concrete wall Lambda Pro Combustion Management System The combustion management system utilizes the physical correlation between the level of the ionization current and the air factor λ. For all gas qualities, the maximum ionization current results with air factor 1. The ionization signal is evaluated by the combustion management system, and the air factor is adjusted to between λ=1.24 and 1.44. This range provides for an optimum combustion quality. Thereafter, the electronic gas valve regulates the required gas volume based on the prevailing gas quality. To check the combustion quality, the CO2 content or the O2 content of the flue gas is measured. The actual values enable the prevailing air factor to be determined. The relationship between the CO2 or O2 content and air factor λ is illustrated in the table below. To achieve an optimum combustion control, the system regularly performs an automatic self-calibration; also after a power failure (shutdown). For this, the combustion is briefly regulated to max. ionization current (equals air factor λ=1). The automatic calibration is performed shortly after the burner starts and lasts approx. 5 s. During the calibration, higher than normal CO emissions may occur briefly. The combustion management system can also be calibrated manually, e.g. after maintenance or service work (coding address “85”, see Start-up/Service Instructions). Table 14. Air factor λ - CO2/O2 content Air factor λ O2 content (%) CO2 content (%) for natural gas CO2 content (%) for liquid propane gas 1.24 4.4 9.2 10.9 1.27 4.9 9.0 10.6 1.30 5.3 8.7 10.3 1.34 5.7 8.5 10.0 1.37 6.1 8.3 9.8 1.40 6.5 8.1 9.6 1.44 6.9 7.8 9.3 The Vitodens 200-W, WB2B boilers come equipped with Lambda Pro, the industry’s first intelligent combustion management system. The boiler adjusts automatically to any gas type and quality without the need for a fuel conversion kit. 5369 295 v1.2

The examples on the following pages depict possible piping layouts of the Vitodens 200-W boiler equipped with Viessmann System Technology. For boiler and tank combinations, please install only feasible combinations listed in the Viessmann Price List. Please note that the following examples are simplified conceptual drawings only! Piping and necessary componentry must be field verified. A low water cut-off (LWCO) must be installed where required by local codes. Proper installation and functionality in the field is the responsibility of the heating contractor. DHW supply and return piping between boiler DHW connections and the Viessmann DHW tank connections, shall be a minimum of 1” nominal pipe diameter (for models WB2B 19 to 35) or 1¼” (for models WB2B 45 to105) DHW connection outlet sizes provided on the boiler and the DHW tank). This will ensure the residual head of the field supplied pump is fully utilized to overcome the resistance of the DHW heat exchanger coil and to provide sufficient water flow to the boiler heat exchanger. In non-Viessmann DHW tank applications, perform, in addition to the above, accurate calculations for DHW tank coil pressure drop versus boiler pump (field supplied) residual head to ensure sufficient water flow to the boiler heat exchanger. Failure to heed the above instructions may cause boiler short-cycling and inadequate DHW supply. 5369 295 v1.2 IMPORTANT If a DHW storage tank other than a Viessmann Vitocell 100 or 300 tank is used, the installer must verify proper operation of the Viessmann DHW tank temperature sensor with the original manufacturer of the tank. Viessmann strongly recommends the installation of a temperature tempering valve in the DHW supply line. WARNING IMPORTANT

Vitodens 200-W, WB2B with a direct-connected heating circuit Legend AV Air vent (models WB2B 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Heating circuit Heating circuit pump sÖ DHW circulating pump sA DHW storage tank DHW tank temperature sensor I Expansion tank J Flow check valve DHW recirculation pump sK Power/Pump module M Optional purge tee (field supplied) Installation of ...
radiator heating circuit (high-temp. circuit)
DHW production ... with the following flow conditions: The flow rate of the heating circuit is less than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 10 for maximum water flow rate of boiler). The use of a low-loss header is strongly recommended if the maximum water flow rate in the application concerned exceeds the values shown in the applicable table on page 11, or if the system flow rates are unknown. The low-loss header is available as accessory part. See following pages for installation examples with a low-loss header. DHW circulating pump must pump into the Vitodens 200-W boiler (as illustrated). 5369 295 v1.2 5 1 PRV TPV A B C K AV M D E F G H L J Fig. 42 I IMPORTANT

Vitodens 200-W, WB2B with a direct-connected heating circuit and low-loss header Legend AV Air vent (models WB2B 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Heating circuit Boiler pump sÖ DHW circulating pump sA DHW storage tank DHW tank temperature sensor I Expansion tank J Flow check valve DHW recirculation pump sK Power/Pump Module M Low-loss header N Optional purge tee (field supplied) O Viessmann temperature sensor for low-loss header P Heating circuit pump 20A Installation of ...
radiator heating circuit (high-temp. circuit)
DHW production ... with the following flow conditions: The flow rate of the heating circuit is greater than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 10 for maximum water flow rate of boiler). The use of a low-loss header is strongly recommended if the maximum water flow rate in the application concerned exceeds the values shown on page 11, or if the system flow rates are unknown. The low-loss header is available as accessory part. Please note location of expansion tank I and flow check valve J . DHW circulating pump must pump into the Vitodens 200-W WB2B boiler (as illustrated). DHW circulating pump must pump into the Vitodens 200 boiler (as illustrated). 5369 295 v1.2 1 PRV TPV 5 A B C K M D E F G H L N O AV 5 J I P Fig. 43 IMPORTANT IMPORTANT IMPORTANT

Vitodens 200-W, WB2B with... – DHW storage tank – one heating circuit with mixing valve and system separation Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature Remote control Vitotrol 300 (optional) Underfloor heating circuit Mixing valve temperature sensor F1 Heating circuit pump F2 Heating circuit pump located upstream of heat exchanger (see IMPORTANT note to the right) Plate heat exchanger for system separation Accessory kit for heating circuit with mixing valve I DHW circulating pump sA J DHW storage tank DHW tank temperature sensor Expansion tank M DHW recirculation pump sK N Power/Pump module O Optional purge tee (field supplied) P Flow check valve Installation of ...
underfloor heating circuit with 3-way mixing valve and system separation (low-temp. circuit)
DHW production ... with the following flow conditions: The flow rate of the heating circuit is less than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler. See page 10 for maximum water flow rate of the Vitodens 200-W WB2B boilers. The use of a low-loss header is recommended if the system water flow rate is unknown. The low-loss header is available as accessory part. See following pages for installation examples with a low-loss header. System separation is required of underfloor heating systems employing non-oxygen diffusion barrier tubing. All components on the secondary side of the heat exchanger must be made of corrosion-resistant materials. DHW circulating pump I must pump into the Vitodens 200-W WB2B boiler (as illustrated). Sizing of field-supplied pump F2 is critical for proper boiler operation in this system layout. See page 10 for the supply head pressure drop of the boiler. An undersized pump may cause short-cycling and/or improper operation of the boiler. Viessmann STRONGLY recommends using a low-loss header and a boiler pump in this system layout. 5369 295 v1.2 TPV AV Y I F1 F2 5 1 Y Y PRV PRV J O 2 M N P Fig. 44 IMPORTANT IMPORTANT IMPORTANT

Vitodens 200-W, WB2B with... – DHW storage tank – one direct-connected heating circuit – one heating circuit with a mixing valve Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Under floor heating circuit Radiator heating circuit Heating circuit pump Mixing valve temperature sensor Accessory kit for heating circuit with mixing valve I Domestic hot water storage tank J DHW tank temperature sensor Expansion tank Optional purge tee (field supplied) DHW supply and return piping DHW recirculation pump sK O Power/Pump module P Boiler pump sÖ Q DHW circulating pump sA R Flow check valve Installation of different heating circuits...
radiator heating circuit (high-temp. circuit)
under floor heating circuit with 3-way mixing valve (low-temp. circuit)
DHW production ... with the following flow conditions: 1. The water flow rate (output) of the radiator heating circuit is at least 30% greater than that of the under floor heating circuit. 2. The total flow rate of the two heating circuits is less than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 10 for max. water flow rate). The use of a low-loss header is strongly recommended if the maximum water flow rate in the application concerned exceeds the values shown on page 11, or if the system flow rates are unknown. The low-loss header is available as accessory part. See following pages for additional installation examples with a low-loss header. The 3-way mixing valve, built-in to achieve the low-temperature level of the under floor heating circuit, is controlled by an accessory kit for a heating circuit with mixing valve. DHW circulating pump Q must pump into the Vitodens 200-W WB2B boiler (as illustrated). 5369 295 v1.2 PRV TPV A B C K M D E F H L O AV G I N 1 V 2 5 R Q J P M Fig. 45 IMPORTANT

Vitodens 200-W, WB2B with... – DHW storage tank – one heating circuit with mixing valve – one heating circuit without mixing valve and low-loss header Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Under floor heating circuit Radiator heating circuit Heating circuit pump 20A F1 Heating circuit pump Mixing valve temperature sensor Kit for heating circuit with mixing valve I Domestic hot water storage tank J DHW tank temperature sensor Expansion tank Optional purge tee (field supplied) DHW supply and return piping DHW circulating pump sK Q DHW circulating pump sA R Low-loss header S Viessmann temperature sensor for low-loss header T Flow check valve Installation of different heating circuits...
radiator heating circuit (high-temp. circuit)
under floor heating circuit with 3-way mixing valve (low-temp. circuit)
DHW production ... with the following flow conditions: The total flow rate of the two heating circuits is greater than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 11 for maximum water flow rate of boiler). The use of a low-loss header is strongly recommended. The low-loss header is available as accessory part. The 3-way mixing valve, built-in to achieve the low-temperature level of the under floor heating circuit, is controlled by an accessory kit for a heating circuit with mixing valve. Please note location of expansion tank and flow check valve T. DHW circulating pump Q must pump into the Vitodens 200-W WB2B boiler (as illustrated). 5369 295 v1.2 PRV TPV A B C K M D E F H L N O T AV 5 1 2 5 G I R Q M P S J F1 Fig. 46 IMPORTANT IMPORTANT

Vitodens 200-W, WB2B with... – DHW storage tank – two heating circuits with a mixing valve and low-loss header Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Under floor heating circuit Heating circuit pumps Mixing valve temperature sensor Accessory kit for heating circuit with mixing valve Vitotronic 200-H, HK1M with LON communication module*1 I DHW storage tank J DHW tank temperature sensor Expansion tank Optional purge tee (field supplied) for easier air removal Low-loss header Viessmann temperature sensor for low-loss header O DHW supply and return piping P DHW circulating pump sK Q Power/Pump Module R Boiler pump sÖ S DHW circulating pump sA T Flow check valve Installation of different heating circuits...
two heating circuits with 3-way mixing valve (low-temp. circuit)
DHW production ... with the following flow conditions: The total flow rate of the two heating circuits is greater than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 11 for maximum water flow rate of boiler). The use of a low-loss header is strongly recommended. The low-loss header is available as accessory part. The 3-way mixing valve, built-in to achieve the low-temperature level of the under floor heating circuit, is controlled by an accessory kit for a heating circuit with mixing valve . The second under floor heating circuit is supplied by a field supplied circulation controlled by an accessory kit or a Vitotronic 200-H, HK1M mixing valve control . If more than two heating circuits with mixing valves are to be connected, they can be controlled by a Vitocontrol multi-boiler control. Contact your local Viessmann Technical Sales Representative for details. *1Requires... - LON communication module 200-H HK1M - Boiler LON communication module - LON cable - End resistors Please note location of expansion tank and flow check valve T. DHW circulating pump S must pump into the Vitodens 200-W WB2B boiler (as illustrated). 5369 295 v1.2 1 TPV 2 5 2 PRV A B C D E F G H I K L M N O S AV R T D E F P Q 5 O J Fig. 47 IMPORTANT IMPORTANT

Vitodens 200-W, WB2B with... – direct-connected heating circuit – one heating circuit with system separation Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature sensor Remote control Vitotrol 300 (optional) Under floor heating circuit Heating circuit pump Plate heat exchanger for system separation Heating circuit pump Mixing valve temperature sensor I Accessory kit for heating circuit with mixing valve J DHW storage tank DHW tank temperature sensor Expansion tanks Optional purge tee (field supplied) DHW supply and return piping O DHW recirculation pump sK P Boiler pump sÖ Q DHW circulating pump sA R Power/pump module S Flow check valve Installation of different heating circuits...
radiator heating circuit (high-temp. circuit)
under floor heating circuit with 3-way mixing valve (low-temp. circuit)
DHW production ... with the following flow conditions: The total flow rate of the two heating circuits is less than the maximum possible water flow rate of the Vitodens 200-W WB2B boiler (see page 11 for maximum water flow rate of boiler). The use of a low-loss header is strongly recommended if the maximum water flow rate in the application concerned exceeds the max. boiler flow rate, or if the system flow rates are unknown. The low-loss header is available as accessory part. The 3-way mixing valve, built-in to achieve the low-temperature level of the under floor heating circuit, is controlled by an accessory kit for a heating circuit with mixing valve I . The boiler pump sÖ supplies the radiator heating circuit and the plate heat exchanger for system separation. The pressure drop (secondary circuit) of the plate heat exchanger must be less/equal to the pressure drop of the 3-way mixing valve. This must be taken into account when sizing the plate heat exchanger. DHW circulating pump Q must pump into the Vitodens 200-W WB2B boiler (as illustrated). 5369 295 v1.2 TPV PRV A B C D G I K L M N S R E F P Q 5 1 V 2 O AV N J Fig. 48 IMPORTANT IMPORTANT

Vitodens 200-W, WB2B with... – DHW storage tank – low-loss header – multiple heating circuits with mixing valves When designing a system as illustrated above, please contact your local Viessmann Sales Representative for assistance. Legend AV Air vent (WB2B models 19 to 60 only) PRV Pressure relief valve TPV Temperature and pressure relief valve Vitodens 200-W WB2B boiler with Vitotronic 200, HO1 outdoor reset control Outdoor temperature Boiler pump sÖ Vitocontrol or Vitotronic 200-H, HK1S*1 Mixing valve temperature sensor Heating circuit pumps Accessory kit for heating circuit with mixing valve*2 Heating circuits with mixing valves I Viessmann temperature sensor for low-loss header J Low-loss header DHW circulating pump sA DHW tank temperature sensor DHW storage tank Expansion tank O DHW recirculation pump sK P Power/Pump module Q Flow check valve *1Contact your local Sales Representative for details. *2Vitotronic 200-H, HK1M mixing valve control with LON communication module can be used instead of the accessory kit and Vitocontrol. Please note location of expansion tank and flow check valve Q. Pumps and must pump into the Vitodens 200-W WB2B boiler (as illustrated). 5369 295 v1.2 5 1 PRV 5 2 2 AV A B C D E E E F F F G G G H H H K L M N O P Q 2 TPV I J Fig. 49 IMPORTANT IMPORTANT

Multiple (up to four) Vitodens 200-W, models WB2B 45 to 105 with... – multiple heating circuits with mixing valves – low-loss header When designing a multiple Vitodens system as shown above, please reference applicable multiple Vitodens technical documentation, and contact your local Viessmann Sales Representative for further assistance. This installation example depicts a possible piping layout for multiple Vitodens 200-W, WB2B boilers equipped with Viessmann System Technology. Please note that this example is based on a simplified conceptual drawing only! Piping and necessary componentry must be field verified. A low water cut-off (LWCO) must be installed where required by local codes. Proper installation and functionality in the field is the responsibility of the heating contractor. 5369 295 v1.2 Vitocontrol-S Boiler 1 Boiler 2 Boiler 3 Boiler 4 PRV PRV PRV PRV TPV DHW Tank Low-Loss Header Common Supply Temperature Sensor 5 5 M M Fig. 50 IMPORTANT If a DHW storage tank other than a Viessmann Vitocell 100 or 300 tank is used, the installer must verify proper operation of the Viessmann DHW tank temperature sensor with the original manufacturer of the tank. Viessmann strongly recommends the installation of a temperature tempering valve in the DHW supply line. WARNING

6 and 8. The boiler control pump logic function must be programmed in the Start-up/Service Instructions. . *Note: When using a low loss header in the system, the DHW connections can be made downstream of the low loss header. See Vitodens 200-W WB2B Start-up/Service Instructions for applicable system coding information (see coding level 2): 00: ... A2: ... 5b: ... 5369 295 v1.2 M 5 1 2 5 PRV TPV Alternative location of the expansion tank * * Fig. 51

X9.3 X9.4 X X11 LON KMK 9 X8 X7 1 20 40 N L 145 144 143 50 20 21 20A 28 L G N 40 L2 N L N L N L EXTERNAL DEMAND EXTERNAL SIGNAL 0--10 V -- + 120VAC M 120VAC M 120VAC M M 120VAC 120VAC RE--CIRC. PUMP FAULT ALARM OUTPUT BOILER PUMP DHW PUMP SYSTEM PUMP 1 2 3 1 2 3 1 2 3 L1 G N 3 1 2 145 SAFETY DEVICE LOW WATER CUT--OFF 120VAC RECEPTACLE WALL --TYPICAL A P2 P1 L2 L1 SWITCH DISCONNECT MAIN POWER SUPPLY 120V, 60HZ, 12A N MAIN L G 3 1 2 145 3 1 2 144 3 1 2 143 50 20 21 20A 40 N L Vitotronic 050 HK1M LON 120/230 Transformer Power/Pump module 4 3 2 1 X1 LON X2 LON X1 KMK1KMK2 A8 Fig. 52 DHW 39 Overview of Electrical Connections, Models WB2B 19, 26, 35, 45 and 60 Legend ! Outdoor Temperature Sensor ? Flow Temp. Sensor/Low-Loss Header % DHW Temperature Sensor sÖ Boiler Pump 20A System Pump sA DHW Pump sK DHW Recirculation Pump fÖ Power Suppl gÖ Fault Alarm Output aVD External Blocking Terminals 2-3 External Demand Terminals 1-2 External Heating Program Changeover Terminals 1-2 (Allocation of this function is set via Coding Address 91.) aVF External 0-10 V Signal aVG KM BUS to Power/Pump Module / Accessories L Low water cut-off (field supplied) M Power/Pump Module A1 Main PCB (GC130 Ignition Module) A6 Coding Card A7 Connection Adaptor A8 LON/Cascade Communication Module(Accessory) X Electrical Interfaces 5369 295 v1.2

X X11 LON KMK 9 X7 1 20 40 N L 145 144 143 50 20 21 20A 28 L G N 40 L2 N L N L N L EXTERNAL DEMAND EXTERNAL SIGNAL 0--10 V -- + 120VAC M 120VAC M 120VAC M M 120VAC 120VAC DHW PUMP FAULT ALARM OUTPUT BOILER PUMP DHW PUMP SYSTEM PUMP 1 2 3 1 2 3 1 2 3 L1 G N 3 1 2 145 SAFETY DEVICE LOW WATER CUT--OFF 120VAC RECEPTACLE WALL --TYPICAL A P2 P1 L2 L1 SWITCH DISCONNECT MAIN POWER SUPPLY 120V, 60HZ, 12A N MAIN L G 3 1 2 145 3 1 2 144 3 1 2 143 50 20 21 20A 40 N L Vitotronic 200--H HK1M LON 120/230 Transformer Power/Pump module X8.10 X8.11 X8 4 3 2 1 X1 LON X2 LON X1 KMK1KMK2 A8 RE--CIRC. Fig. 53 40 Overview of Electrical Connections, Models WB2B 80 and 105 Legend ! Outdoor Temperature Sensor ? Flow Temp. Sensor/Low-Loss Header % DHW Temperature Sensor sÖ Boiler Pump 20A System Pump sA DHW Pump sK DHW Recirculation Pump fÖ Power Supply gÖ Fault Alarm Output aVD External Blocking Terminals 2-3 External Demand Terminals 1-2 External Heating Program Changeover Terminals 1-2 (Allocation of this function is set via Coding Address 91.) aVF External 0-10 V Signal aVG KM BUS to Power/Pump Module / Accessories L Low water cut-off (field supplied) M Power/Pump Module A1 Main PCB (GC131 Ignition Module) A6 Coding Card A7 Connection Adaptor A8 LON/Cascade Communication Module (Accessory) X Electrical Interfaces 5369 295 v1.2

IN THE COMMONWEALTH OF MASSACHUSETTS... -this product shall be installed by a licensed plumber or gas fitter. -the flexible connector (if used) cannot exceed 36”. -any level type shutoff used must be of tee handle type. Boiler location As a direct vent appliance, the Vitodens 200-W can be installed for room air independent operation (sealed combustion) regardless of size and ventilation method of the room in which it is located. The Vitodens 200-W can be installed, for example, in the main living area of a house, in non-ventilated utility rooms, cupboards, closets and alcoves with no clearance required from combustible materials, as well as in attics with a direct outlet for the flue gas/fresh air system. Follow all local and national codes. Flue gas system Viessmann PPS (Polypropylene) concentric flue gas/fresh air systems for room air independent operation (sealed combustion) and side wall venting are tested to ANSI Z21.13 - CSA 4.9 - 2000 standards and are certified together with the Vitodens 200-W boiler as a constructional unit. The Vitodens 200-W boiler may also be vented vertically, using an AL29-4C® special stainless steel, single-wall, room air dependent venting system (UL listed for category IV). For a more detailed description of the direct vent and single-wall vent system, please refer to the Vitodens 200-W Venting System Installation Instructions. Flue gas temperature protection Flue pipes used for the Vitodens 200-W are suitable for max. flue gas temperatures of up to 230°F / 110°C. No flue gas temperature protection is required as the maximum permissible flue gas temperature is not exceeded in any operating condition or in the event of malfunctioning. Low water cut-off A low water cut-off may be required by local codes. If the boiler is installed above the radiation level, a low water cut-off device of approved type must be installed in all instances. An approved type low water cut-off device must be provided by the heating contractor. Do not install an isolation valve between the boiler and the low water cut-off. System layout
The max. boiler water temperature for space heating and DHW production is –165°F / 74°C for models WB2B 19 to 60 or –176°F / 80°C for models WB2B 80 and105. To minimize distribution losses, Viessmann recommends that the heating and domestic hot water systems be based on a maximum boiler supply temperature of 158°F / 70°C.
Due to the low return temperatures required for gas condensing, no mixing valves should be used in the heating circuit whenever possible. If mixing valves are required, e.g. for multi-circuit systems or underfloor heating systems, only 3-way mixing valves must be used. Do not use 4-way mixing valves with condensing boilers. Water connections Vitodens 200-W boilers can be used in any fully pumped hot water heating system. Minimum system pressure is 0.8 bar/12 psig. Chemical corrosion protection products Corrosion does not typically occur in sealed heating systems which have been correctly installed and are correctly operated. Many manufacturers of plastic pipes recommend the use of chemical additives. In this case, only those commercially available corrosion protection products approved for boilers with domestic hot water heating via single-wall heat exchangers (instantaneous plate heat exchangers or DHW tanks) must be used. Underfloor heating systems For underfloor heating systems Viessmann recommends the use of plastic tubing with an oxygen diffusion barrier in order to prevent the diffusion of oxygen through tubing. If plastic tubing without an oxygen diffusion barrier is used in underfloor heating systems, Viessmann recommends that such systems be separated from the boiler with a heat exchanger. Underfloor heating systems and heating circuits containing a very large volume of water must be connected to the boiler via a 3-way mixing valve; please refer to the applicable installation example in this manual. Oxygen diffusion barrier underfloor tubing The boiler warranty does not cover leaks resulting from corrosion caused by the use of underfloor plastic tubing without an oxygen diffusion barrier. Such systems must have the non-oxygen diffusion barrier tubing separated from the boiler with a heat exchanger. Viessmann recommends the use of underfloor plastic tubing with an oxygen diffusion barrier. Water quality Treatment for boiler feed water should be considered in areas of known problems, such as where a high mineral content and hardness exist. In areas where freezing might occur, an antifreeze may be added to the system water to protect the system. Please adhere to the specifications given by the antifreeze manufacturer. Do not use automotive silicate based antifreeze. Please observe that an antifreeze/water mixture may require a backflow preventer within the automatic water feed and influence components such as diaphragm expansion tanks, radiation, etc. Maximum antifreeze content is 50% for the Vitodens 200-W boiler. Do not use antifreeze other than specifically made for hot water heating systems. System also may contain components which might be negatively affected by antifreeze. Check total system frequently when filled with antifreeze. Advise system operator/ultimate owner that system is filled with a glycol mix. The heating contractor must provide a MSDS (Material Safety Data Sheet) for the antifreeze used to the system operator/ultimate owner. Warranty Our warranty does not cover damages resulting from the following: – installation or service by unqualified and unlicensed personnel. – attempting to perform any repair work on the boiler other than that mentioned in the boiler literature. – tampering with or attempting, without Viessmann permission, to readjust the factory settings of the –combination gas valve –combustion air opening of the burner blower – leaks resulting from corrosion caused by the use of underfloor plastic tubing without an oxygen diffusion barrier. For detailed warranty information, please read warranty sheet supplied with product. 5369 295 v1.2

Venting Alternatives Vent System Diameter Viessmann Coaxial PPs Vent 1 Stainless Steel Vent 2 CPVC Vent 3 Type Max. Equivalent Length (EqL) 60/100 80/125 100/150 3” 4” 2” 3” 4” Diameter Horizontally Vented WB2B-19 EqL 33 / 10 43 / 13 52 / 16 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-26 EqL 33 / 10 43 / 13 52 / 16 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-35 EqL 26 / 8 36 / 11 49 / 15 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-45 EqL 33 / 10 43 / 13 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-60 EqL 33 / 10 43 / 13 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-80 EqL 43 / 13 131 / 40 131 / 40 ft. / m WB2B-105 EqL 43 / 13 131 / 40 131 / 40 ft. / m See Page(s) 44 46-49 50-53 Page Vertically Vented WB2B-19 EqL 30 / 9 39 / 12 52 / 16 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-26 EqL 30 / 9 39 / 12 52 / 16 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-35 EqL 23 / 7 34 / 10.5 49 / 15 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-45 EqL 33 / 10 43 / 13 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-60 EqL 20 / 6 33 / 10 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-80 EqL 43 / 13 131 / 40 131 / 40 ft. / m WB2B-105 EqL 43 / 13 131 / 40 131 / 40 ft. / m See Page(s) 45 46-49 50-53 Page 1 Sealed combustion, coaxial vent material to be supplied by Viessmann only. 2 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 3 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  Always follow Viessmann venting installation instructions 5368 815. 5369 295 v1.2

Venting Alternatives Vent System Diameter Viessmann Coaxial PPs Vent 1 Stainless Steel Vent 2 CPVC Vent 3 Type Max. Equivalent Length (EqL) 60/100 80/125 100/150 3” 4” 2” 3” 4” Diameter Horizontal Intake / Vertically Vented WB2B-19 EqL 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-26 EqL 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-35 EqL 148 / 45 180 / 55 115 / 35 148 / 45 180 / 55 ft. / m WB2B-45 EqL 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-60 EqL 98 / 30 148 / 45 98 / 30 148 / 45 ft. / m WB2B-80 EqL 131 / 40 131 / 40 ft. / m WB2B-105 EqL 131 / 40 131 / 40 ft. / m See Page(s) 54-55 54-55 Page Select vent material based on vent configuration, preferred material, and necessary maximum equivalent length. Always follow Viessmann venting installation instructions. - Do not common vent Vitodens 200-W with any other appliance. - Layouts on the following pages are for illustrative purposes only. - Do not use Price List for installation purposes. This is not a design tool. 1 Sealed combustion, coaxial vent material to be supplied by Viessmann only. 2 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 3 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials). 5369 295 v1.2

Vent System 1 Vent System Diameter Vent System 60/100 80/125 100/150 Diameter Horizontally Vented Maximum Equivalent WB2B Length (EqL) -19/-26 33 / 10 -19/-26 43 / 13 -19/-26 52 / 16 ft. / m WB2B -35 26 / 8 -35 36 / 11 -35 49 / 15 ft. / m WB2B -45/-60 33 / 10 -45-105 43 / 13 ft. / m Room Air Independent Operation Important! As a starting point, please pay attention to boiler vent connection size Basic Horizontal Vent Kit Venting pieces can be ordered individually, or as a convenient kit using the Order No. to the right; Basic Vent Kit includes one of each of the items num- bered 2 to 5, and two Mounting Clips 6. 7424 119 7424 120 7424 121 Order No. 1 Boiler Vent Pipe Adaptor included with boiler A Flue Transition 110/150 to 100/150 only not shown - required WB2B 80/105 — — 7424 115 Order No. B A Combustion Air Intake A A Adaptor, coaxial 60/100 to 80/125 not shown - only for WB2B 19/26/35 Adaptor, coaxial 60/100 to 100/150 not shown - only for WB2B 19/26/35 Adaptor, coaxial 80/125 to 100/150 not shown - only for WB2B 45/60 — — — 7424 112 — — — 7424 113 7424 114 Order No. Order No. Order No. Combustion Air Intake Flue Gas Outlet B A 2 90° Elbow EqL=1.6ft. / 0.5m 7424 094 7424 095 7424 096 Order No. 3 Straight Pipe 2 3.3ft. / 1m 7424 091 7424 092 7424 093 Order No. 4 Vent Termination 2.6ft. / 0.8m 7424 100 7424 101 7424 102 Order No. 5 Protective Screen 1 7134 237 Order No. 6 Mounting Clip 2 (each) 7424 109 7424 110 7424 111 Order No. Other Available Vent Pieces not shown in illustration above Sliding Coupling 1.25ft. / 0.4m 7424 106 7424 107 7424 108 Order No. Straight Pipe 2 1.6ft. / 0.5m 7424 088 7424 089 7424 090 Order No. 5369 295 v1.2

EqL=1.0ft. / 0.3m 7424 097 7424098 7424 099 Order No. 1 PPs coaxial vent material must be ULC S-636 certified for Category IV boilers. Do not mix non-ULC S-636 with ULC S-636 venting. Side wall venting installation must include Viessmann Protective Screen! 2 Order 1 Mounting Clip for each straight length of vent pipe installed.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 elbows may be installed in the vent system; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Vent System 1 Vent System Diameter 60/100 80/125 100/150 Diameter Vertically Vented Maximum Equivalent WB2B Length (EqL) -19/-26 30 / 9 -19/-26 39 / 12 -19/-26 52 / 16 ft. / m WB2B -35 23 / 7 -35/-45 33 / 10 -35 49 / 15 ft. / m WB2B -60 20 / 6 -45 43 / 13 ft. / m WB2B -60 33 / 10 ft. / m WB2B -80-105 43 / 13 ft. / m 5369 295 v1.2

included with boiler Independent Operation A A Flue Transition 110/150 to 100/150 only not shown - required WB2B 80/105 — — 7424 115 97.— Order No. CDN$ Important! Adaptor, coaxial 60/100 to 80/125 not shown - only for WB2B 19/26/35 Adaptor, coaxial 60/100 to 100/150 not shown - only for WB2B 19/26/35 Adaptor, coaxial 80/125 to 100/150 not shown - only for WB2B 45/60 — — — 7424 112 108.— — — — 7424 113 170.— 7424 114 131.— Order No. CDN$ Order No. CDN$ Order No. CDN$ Important! As a starting point, please pay attention to boiler vent connection size shown on page 2.6-14. 2 90° Elbow EqL=1.6ft. / 0.5m 7424 094 76.— 7424 095 108.— 7424 096 158.— Order No. CDN$ connection size shown on page 2.6-14. 6 Mounting Clip 2 (each) 7424 109 15.— 7424 110 19.— 7424 111 29.— Order No. CDN$ 8 Sliding Coupling 1.25ft. / 0.4m 7424 106 76.— 7424 107 86.— 7424 108 97.— Order No. CDN$ 9 Straight Pipe 2 1.6ft. / 0.5m Straight Pipe 2 3.3ft. / 1m 7424 088 59.— or 7424 091 86.— 7424 089 76.— or 7424 092 108.— 7424 090 108.— or 7424 093 131.— Order No. CDN$ Order No. CDN$ 45° Elbow (Set of 2) EqL=1ft. / 0.3m 7424 097 131.— 7424 098 143.— 7424 099 201.— Order No. CDN$ Vent Termination 3.9ft. / 1.2m 7424 103 268.— 7424 104 363.— 7424 105 449.— Order No. CDN$ Combustion Air Intake Flue Gas Outlet B A Roof Flashing and Storm Collar (B-Vent material or better) field supplied 1 PPs coaxial vent material must be ULC S-636 certified for Category IV boilers. Do not mix non-ULC S-636 venting with ULC S-636 venting. 2 Order 1 mounting clip for each straight length of vent pipe installed.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 elbows may be installed in the vent system; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Vent System 1 Vent System Diameter 3” 4” Diameter Horizontally Vented Maximum Equivalent WB2B Length (EqL) a + b  -19...-35 148 / 45 -19...-35 180 / 55 ft. / m Room Air Independent Operation 1 Boiler Vent Adaptor included with boiler b Independent Operation 2 Adaptor, for stainless steel 60/100 to 80/125 (outer shell removed) 7424 112 Order No. a A B 3 Adaptor(s), stainless steel 80mm to 3” 3” to 4” (not shown) field supplied — field supplied and field supplied A 4 Venting Support 2 field supplied 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied Combustion Air Intake A 6 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. Combustion Air Intake Flue Gas Outlet B A 7 2” to 3” or 2” > 4” field supplied 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen c/w Termination for stainless steel field supplied 5369 295 v1.2

included with boiler b Dependent Operation B 2 Adaptor, for stainless steel 60/100 to 80/125 (outer shell removed) 7424 112 Order No. A A B 3 Adaptor(s), stainless steel 80mm to 3” 3” to 4” (not shown) field supplied — field supplied and field supplied 4 Venting Support 2 field supplied Combustion Air Intake Flue Gas Outlet B A C 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied a = zero Flue Gas Outlet Air Opening B C 9 Bird Screen c/w Termination for stainless steel field supplied 1 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 87° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Vent System 1 Vent System Diameter 3” 4” Diameter Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -19...-35 148 / 45 -19...-35 180 / 55 ft. / m A Room Air Independent Operation B 1 Boiler Vent Adaptor included with boiler A Independent Operation B 2 Adaptor, for stainless steel 60/100 to 80/125 (outer shell removed) 7424 112 Order No. b 3 Adaptor(s), stainless steel 80mm to 3” 3” to 4” (not shown) field supplied — field supplied and field supplied a 4 Venting Support 2 field supplied a 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied 6 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. A 7 2” to 3” or 2” to 4” field supplied Combustion Air Intake Flue Gas Outlet B A 8 Combustion Air Intake Vent Material 3 field supplied Flue Gas Outlet B 9 Bird Screen c/w Termination field supplied Room Air Dependent Operation B 1 Boiler Vent Adaptor included with boiler 2 Adaptor, for stainless steel 60/100 to 80/125 (outer shell removed) 7424 112 Order No. A A b 3 Adaptor(s), stainless steel 80mm to 3” 3” to 4” (not shown) field supplied — field supplied and field supplied 4 Venting Support 2 field supplied Combustion Air Intake A C 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied Combustion Air Intake Flue Gas Outlet Air Opening a = zero B A C 9 Bird Screen c/w Termination for stainless steel field supplied 1 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 87° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815. 5369 295 v1.2

Vent System 1 Vent System Diameter 3” 4” 4” Diameter Horizontally Vented Maximum Equivalent WB2B Length (EqL) a + b  -45/-60 98 / 30 -45/-60 148 / 45 -80/-105 131 / 40 ft. / m Room Air Independent Operation 1 Boiler Vent Adaptor included with boiler b Independent Operation 2 Double-Pipe Adaptor 7189 822 7373 253 Order No. a A B 3 Adaptor(s), stainless steel 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) field supplied — — field supplied and field supplied — — — field supplied 4 Venting Support 2 field supplied A 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied Combustion Air Intake Flue Gas Outlet B A 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen c/w Termination for stainless steel field supplied b Room Air Dependent Operation 1 Boiler Vent Adaptor included with boiler b B 2 Adaptor, stainless steel 80mm to 3” field supplied field supplied — B A 3 Adaptor, stainless steel 3” to 4” 110mm to 4” — — field supplied field supplied — field supplied 4 Venting Support 2 field supplied a = zero Combustion Air Intake Flue Gas Outlet Air Opening B A C C 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied a = zero 9 Bird Screen c/w Termination for stainless steel field supplied 1 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 87° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815. 5369 295 v1.2

Vent System 1 Vent System Diameter 3” 4” 4” Diameter Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -45/-60 98 / 30 -45/-60 148 / 45 -80/-105 131 / 40 ft. / m A Room Air Independent Operation B 1 Boiler Vent Adaptor included with boiler A Independent Operation B 2 Double-Pipe Adaptor 7189 822 7373 253 Order No. a b 3 Adaptor(s), stainless steel 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) field supplied — — field supplied and field supplied — — — field supplied a 4 Venting Support 2 field supplied 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied Combustion Air Intake A 8 Combustion Air Intake Vent Material 3 field supplied Combustion Air Intake Flue Gas Outlet B A 9 Bird Screen c/w Termination for stainless steel field supplied Room Air Dependent Operation B 1 Boiler Vent Adaptor included with boiler 2 Adaptor, stainless steel 80mm to 3” field supplied field supplied — b 3 Adaptor, stainless steel 3 to 4” 110mm to 4” — — field supplied field supplied — field supplied A 4 Venting Support 2 field supplied Combustion Air Intake A C 5 ULC/UL listed Stainless Steel Vent Material 1 for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m field supplied Combustion Air Intake Flue Gas Outlet Air Opening a = zero B A C 9 Bird Screen c/w Termination for stainless steel field supplied 1 Stainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 87° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815. 5369 295 v1.2

Do not use any DWV plumbing pipes to vent this boiler. Appendix 53 CPVC Vent System Vent System 1 Vent System Diameter 2” 3” 4” Diameter Horizontally Vented Maximum Equivalent WB2B Length (EqL) a + b  -19...-35 115 / 35 -19...-35 148 / 45 -19...-35 180 / 55 ft. / m Room Air Independent Operation 1 Boiler Vent Adaptor included with boiler b Independent Operation 2 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. a A B 3 Adaptor(s), CPVC 2” to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied A 4 Venting Support 2 field supplied 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied Combustion Air Intake A 6 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. Combustion Air Intake Flue Gas Outlet B A 7 2” to 3” or 2” to 4” field supplied Flue Gas Outlet B 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen (set of 2) for CPVC 7134 780 7134 781 7134 782 Order No. 5369 295 v1.2

included with boiler b B 2 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. A A B 3 Adaptor(s), CPVC 2” to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied 4 Venting Support 2 field supplied Combustion Air Intake Flue Gas Outlet Air Opening B A C C 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied a = zero Air Opening C 9 Bird Screen (set of 2) for CPVC 7134 780 7134 781 7134 782 Order No. 1 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Do not use any DWV plumbing pipes to vent this boiler. Appendix 55 CPVC Vent System (continued) Vent System 1 Vent System Diameter Vent System 2” 3” 4” Diameter Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -19...-35 115 / 35 -19...-35 148 / 45 -19...-35 180 / 55 ft. / m A Room Air Independent Operation B 1 Boiler Vent Adaptor included with boiler A Independent Operation B 2 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. b 3 Adaptor(s), CPVC 2” to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied 4 Venting Support 2 field supplied a 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied 6 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. 7 2” to 3” or 2” to 4” field supplied Combustion Air Intake B A 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied Flue Gas Outlet B 9 Bird Screen (set of 2) for CPVC 7134 780 7134 781 7134 782 Order No. Room Air Dependent Operation B 1 Boiler Vent Adaptor included with boiler 2 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. A A b 3 Adaptor(s), CPVC 2” to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied 4 Venting Support 2 field supplied Combustion Air Intake A C 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied Combustion Air Intake Flue Gas Outlet Air Opening a = zero B A C 9 Bird Screen (set of 2) for CPVC 7134 780 7134 781 7134 782 Order No. 1 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length. 5369 295 v1.2

Do not use any DWV plumbing pipes to vent this boiler. Appendix 57 CPVC Vent System (continued) Vent System 1 Vent System Diameter 3” 4” 4” Diameter Horizontally Vented Maximum Equivalent WB2B Length (EqL) a + b  -45/-60 98 / 30 -45/-60 148 / 45 -80/-105 131 / 40 ft. / m Room Air Independent Operation 1 Boiler Vent Adaptor included with boiler b Independent Operation 2 Double-Pipe Adaptor 7189 822 7373 253 Order No. a A B 3 Adaptor(s), CPVC 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) 7134 770 — — 7134 770 and field supplied — — — 7134 771 Order No. Order No. 4 Venting Support 2 field supplied A 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied Combustion Air Intake Flue Gas Outlet B A 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen (set of 2) for CPVC 7134 781 7134 782 Order No. 5369 295 v1.2 5369 295 v1.2

included with boiler b 2 Flue Adaptor, CPVC 7134 770 7134 771 Order No. A B 3 Adaptor(s), CPVC 3” to 4” — field supplied C 4 Venting Support 2 field supplied a = zero Combustion Air Intake Flue Gas Outlet Air Opening B A C C 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied 9 Bird Screen (set of 2) for CPVC 7134 781 7134 782 Order No. 1 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Do not use any DWV plumbing pipes to vent this boiler. Appendix 59 CPVC Vent System (continued) Vent System 1 Vent System Diameter 3” 4” 4” Diameter Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -45/-60 98 / 30 -45/-60 148 / 45 -80/-105 131 / 40 ft. / m A Room Air Independent Operation B 1 Boiler Vent Adaptor included with boiler A Independent Operation B 2 Double-Pipe Adaptor 7189 822 7373 253 Order No. a b 3 Adaptor(s), CPVC 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) 7134 770 — — 7134 770 field supplied — — — 7134 771 Order No. Order No. a 4 Venting Support 2 field supplied 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied Combustion Air Intake A 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied Combustion Air Intake Flue Gas Outlet B A 9 Bird Screen (set of 2) for CPVC 7134 781 7134 782 Order No. Room Air Dependent Operation B 1 Boiler Vent Adaptor included with boiler 2 Flue Adaptor, CPVC 7134 770 7134 771 Order No. b 3 Adaptor(s), CPVC 3” to 4” — field supplied — A 4 Venting Support 2 field supplied C Combustion Air Intake Flue Gas Outlet B A 5 ULC/UL listed CPVC Vent Material 1 for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied a = zero Flue Gas Outlet Air Opening B C 9 Bird Screen (set of 2) for CPVC 7134 781 7134 782 Order No. 1 CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815. 5369 295 v1.2

Do not use any DWV plumbing pipes to vent this boiler. Appendix 60 CPVC or Stainless Steel Vent System Vent System 1 Vent System Diameter 2” 3” 4” Diameter Hybrid Vent System Horizontal Intake / Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -19...-35 115 / 35 -19...-35 148 / 45 -19...-35 180 / 55 ft. / m 5369 295 v1.2 5369 295 v1.2

included with boiler Independent Operation B 2 Adaptor, for stainless steel 60/100 to 80/125 (outer shell removed) 7424 112 Order No. 2 Adaptor(s), CPVC 60 to 2” 7134 769 Order No. 3 Adaptor(s), stainless steel 80mm to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied b 3 Adaptor(s), CPVC 2” to 3” 3” to 4” (not shown) — — field supplied — field supplied and field supplied a 4 Venting Support 2 field supplied a A 5 ULC/UL listed Stainless Steel Vent Material 1a for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m or field supplied Combustion Air Intake Flue Gas Outlet B A 5 ULC/UL listed CPVC Vent Material 1b for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied 6 Adaptor(s), CPVC 60mm to 2” 7134 769 Order No. 7 2” to 3” or 2” to 4” field supplied 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen c/w Termination for stainless steel or field supplied 9 Bird Screen (Set of 2) for CPVC 7134 780 7134 781 7134 782 Order No. 1aStainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 1bCPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 87° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

Do not use any DWV plumbing pipes to vent this boiler. Appendix 62 CPVC or Stainless Steel Vent System (continued) Vent System 1 Vent System Diameter Vent System 3” 4” 4” Diameter Hybrid Vent System Horizontal Intake / Vertically Vented Maximum Equivalent WB2B Length (EqL) a + b  -45/-60 98/30 -45/-60 148 / 45 -80/-105 131/40 ft. / m Room Air Independent Operation 1 Boiler Vent Adaptor included with boiler Independent Operation B 2 Double-Pipe Adaptor 7189 822 7373 253 Order No. 3 Adaptor(s), stainless steel 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) or field supplied — — field supplied and field supplied — — — field supplied a b A 3 Adaptor(s), CPVC 80mm to 3” (order 2 pcs) 3” to 4” (order 2 pcs) (not shown) 110mm to 4” (order 2 pcs) 7134 770 — — 7134 770 and field supplied — — — 7134 771 Order No. Order No. A 4 Venting Support 2 field supplied Combustion Air Intake A 5 ULC/UL listed Stainless Steel Vent Material 1a for EqL calculations, use:
45° Elbow EqL=2ft. / 0.6m
90° Elbow EqL=3ft. / 0.9m or field supplied Combustion Air Intake Flue Gas Outlet B A 5 ULC/UL listed CPVC Vent Material 1b for EqL calculations, use:
45° Elbow EqL=3ft. / 0.9m
90° Elbow EqL=5ft. / 1.5m field supplied 8 Combustion Air Intake Vent Material Allowable materials: see note below 3 field supplied 9 Bird Screen c/w Termination for stainless steel or field supplied 5369 295 v1.2

for CPVC 7134 780 7134 781 7134 782 Order No. 1aStainless steel vent material must be ULC/UL listed, stainless steel AL29-4C® for Category IV boilers. Suggested sources: Flexmaster Canada Ltd. / Z-Flex (US) Inc., Heat-fab, ProTech Systems Inc., or Security Chimneys Int’l. 1bCPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc. 2 Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer’s installation instructions. 3 Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.  Do not include first 90° elbow in equivalent vent length calculations (this applies to all vent materials).  A maximum of 5 x 90° elbows may be installed in the air intake and flue outlet combined; do not exceed maximum equivalent vent length.  Always follow Viessmann venting installation instructions 5368 815.

750 McMurray Road Waterloo, Ontario • N2V 2G5 • Canada Tel. (519) 885-6300 • Fax (519) 885-0887 www.viessmann.ca • [email protected] Viessmann Manufacturing Company (U.S.) Inc. 45 Access Road Warwick, Rhode Island • 02886 • USA Tel. (401) 732-0667 • Fax (401) 732-0590 www.viessmann-us.com • [email protected] 64 5369 295 v1.2 Technical information subject to change without notice. Printed on environmentally friendly (recycled and recyclable) paper.