Tekmar Eight Stage Boiler Control 258 Manuals

C 26 27 Zone 10K 0.4 2.0 3.6 Heating Curve 22°F 2 42 Dem R 1 2 5 6 7 8 Pmp Eight Stage Boiler Control 258 Dem Heat System Pmp 9 10 28 Sen Com Sw UnO 29 30 Sen Sup Out Power Minimum 120°F Off 170 Boiler Differential 80 Power Supply: 24V 60Hz 5VA Relay capacities: 24V 10A Test No power here Maximum 24 volts 3 4 Stage Sen H1077 Date S/N 221092 1234567 1 1 11 12 Stage 2 2 13 14 Stage 3 3 15 16 Stage 4 4 Power Heat Demand Minimum WWSD Pump Stage 1 Stage 2 Comb. Air Stage 3 Stage 6 Stage 5 Stage 8 Stage 7 Stage 4 Menu Item Override Setpoint S PRGM TEMP F C Actual Supply Target Supply TIME USE AMPM UNOCC OVR M T W T F S OUTSIDE ROOM 1 2 17 18 19 20 21 22 23 Air Comb. 24 25 Stage 5 5 Stage 6 6 Stage 7 7 N/C 8 8 N/O Com M tekmar Zone Control Auto Stage 1 2 3 4 5 6 7 8 Perm. Demand Ext. timer Fixed last Int. timer Lo-Hi fire Fixed lead Off 1 2 3 4 5 6 7 8 9 External Demand Off 1 2 3 4 5 6 Stpnt Reset Rotate 8 - Data Brochure Eight Stage Boiler Control 258 D 258 07/93 Terminal Plugs: Power and out- put connections LEDs and LCD screen; display of times & temperatures Boiler Differential setting Heating Curve setting Minimum Supply setting Terminal Plug: Sensor and timer inputs Test button & LED to test main control functions System Pump is on Programming buttons Eight Stage Boiler Control 258 Power Heat Demand Minimum WWSD Pump Stage 1 Stage 2 Comb. air Stage 3 Stage 6 Stage 5 Stage 8 Stage 7 Stage 4 Menu Item Override Setpoint Actual Supply Target Supply S PRGM TEMP F C TIME USE AMPM UNOCC OVR M T W T F S OUTSIDE ROOM 1 2 Operating Mode selector switches Heating is required 24Vac power supply is on Combustion air damper is open System is in Warm Weather Shut Down Control is maintaining Minimum Supply Input: Outdoor Sensor 070 Included Input: Supply Sensor 071. Included Input: Unoccupied signal. Optional Input: tekmar 10K Zone Control Optional Output: Turn on stages #1 to #8 Output: Open Combustion Air Damper Input: Heat Demand signal. Optional Output: Turn on System Pump 24Vac power supply Stages 1 to 8 are on Outdoor Reset Strategy . . . . . . pg. 2 Error Messages . . . . . . . . . pg. 14 Sequence of Operation . . . . . . pg. 4 Programming . . . . . . . . . . . pg. 15 Installation . . . . . . . . . . . . . . . . . pg. 7 Pre-Programed Schedules pg. 18 Settings . . . . . . . . . . . . . . . . . . . pg. 10 Technical Data . . . . . . . . . . pg. 19 Testing . . . . . . . . . . . . . . . . . . . . pg. 13 Limited Warranty . . . . . . . . pg. 20 The tekmar Eight Stage Boiler Control 258 is a microprocessor-based control which regulates the supply water temperature from up to 8 boilers based on the outdoor air temperature, and optionally, the indoor air temperature through a tekmar 10K Zone Control. The System pump is turned on when there is a Heat Demand and the outdoor temperature is cool enough to require heat in the system. When a combustion air damper is used, it must be opened before the first boiler is fired. The control has a built-in setback timer and LCD screen to display temperatures and boiler running times.