MORTEX G17D Manuals

1 Mortex Products, Inc. / FT. WORTH, TX 76106 G17 / G18 Installation Instructions Printed 04/04 16 Mortex Products, Inc. / FT. WORTH, TX 76106 G17 / G18 Installation Instructions Printed 04/04 SEALED COMBUSTION DOWNFLOW GAS FURNACE FOR INSTALLATION IN: MANUFACTURED (MOBILE) HOMES, RECREATIONAL VEHICLES, PARK MODELS, MODULAR HOMES AND BUILDINGS CAUTION: READ ALL SAFETY GUIDES BEFORE INSTALLING THIS FURNACE Contents Page General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Installation Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 High Altitude Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Return Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 Alcove & Closet Installations . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Air Distribution Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Duct Connector/Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Install Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Roof Jack Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Cut Openings & Install Roof Jack . . . . . . . . . . . . . . . . . . . . . . . .8 Installing in Snow Regions . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Roof Jack On Hi-Pitch Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Transit-mode Roof Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9 Connect Power Supply Wires . . . . . . . . . . . . . . . . . . . . . . . . . .9 Wall Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Connect Thermostat Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-13 Repair Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-15 Final Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Furnace and Air Conditioner Installations . . . . . . . . . . . . . . . . .16 High Altitude Deration Chart . . . . . . . . . . . . . . . . . . . . . . . . . .16 GENERAL INFORMATION These downflow sealed combustion furnaces install in Manufactured Homes, Recreational Vehicles or modular construction. The furnaces conform to Part 3280 (a) (2) of HUD Manufactured Home Construction and Safety Standards. They must be installed only with listed RJ-Roof Jack, sealed combustion venting system. NOTE: These instructions are intended to assist qualified individuals experienced in the installation of heating equipment. Some state and local codes require installation personnel to be licensed. Read all instructions before starting the installation. SAVE THIS MANUAL NOTICE - A furnace set-up and any adjustment needed is the responsibility of the installer/retailer/contractor and is not covered by the furnace manufacturers warranty. CHECKLIST: FURNACE START-UP 1. Has furnace roof jack crown been correctly installed? 2. Has the furnace gas valve and burner orifice been correctly converted to L.P. Gas where applicable? 3. Is the gas line outlet pressure set for the fuel used? NAT Gas is 3.5” W.C. and L.P. Gas is 10.0”W.C. 4. If the home uses a crossover air connector duct, is it installed per the homebuilders installation instruction? 5. Has the furnace been operated through a complete heating cycle? INSTALLATION INSTRUCTIONS FINAL PROCEDURE INSTALL FURNACE DOOR PANELS A. Install the lower door panel by engaging 2 tabs on bottom cabinet pan into slots on plastic end cap. Then, push in top of door panel until clips on the center divider panel are engaged with latches on door. B. Install the upper louver door panel in a similar manner, by first engaging tabs on the center divider and then pushing the panel in to engage the clips at top of the cabinet. FINISH AND TRIM The alcove or closet installation may be finished and trimmed out as needed. AIR CONDITIONING SYSTEMS If an air conditioning system is installed which does not use the blower for air distribution and operates completely independent of the furnace, the thermostat system shall include interlock, which prevents simultaneous operation of the furnace and air conditioner. An interlock system typically contains a switch, which must be turned to either HEAT or COOL to activate either heating or cooling operation. A cooling thermostat may include a positive OFF switch for this purpose. When used in connection with a cooling unit the furnace shall be installed parallel with or on the upstream side of the cooling unit to avoid condensation in the heat exchanger. For installations with a parallel flow arrangement, the furnace must be equipped with a damper or other means to prevent cold air from being discharged up around the heat exchanger. GAS VALVE CONVERSION INSTRUCTIONS 1. Follow instructions “TO TURN OFF GAS TO APPLIANCE” 2. Remove two bolts securing the gas valve bracket. Pull gas valve valve bracket and burner orifice holder exposing the main burner orifice. 3. Install burner orifice specified on the rating plate for the desired gas. Conversion parts are in a bag attached to the gas valve. 4. Replace valve, bracket/orifice holder, and bolts. Attach ID tag for the desired gas adjacent to the gas valve. Ensure that all connections are tight. 5. Unscrew and reverse the pressure regulating cap so the name of the desired gas is closest to the valve. See illustration. HIGH ALTITUDE DERATE CHART- MAIN BURNER ORIFICE SIZE NATURAL GAS ELEVATION 60,000 BTUH FURNACE 70,000 BTUH FURNACE 75,000 BTUH FURNACE 90,000 BTUH FURNACE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE SEA LEVEL 72AG-147 0.1470 26 72AG-159 0.1590 21 72AG-161 0.1610 20 72AG-180 0.1800 15 2,000 72AG-144 0.1440 27 72AG-154 0.1540 23 72AG-161 0.1610 20 72AG-177 0.1770 16 3,000 72AG-140 0.1405 28 72AG-154 0.1540 23 72AG-159 0.1590 21 72AG-173 0.1730 17 4,000 72AG-140 0.1405 28 72AG-152 0.1520 24 72AG-157 0.1570 22 72AG-173 0.1730 17 5,000 72AG-140 0.1405 28 72AG-149 0.1495 25 72AG-154 0.1540 23 72AG-169 0.1690 18 6,000 72AG-136 0.1360 29 72AG-147 0.1470 26 72AG-152 0.1520 24 72AG-166 0.1660 19 7,000 72AG-136 0.1360 29 72AG-144 0.1440 27 72AG-149 0.1490 25 72AG-161 0.1610 20 8,000 72AG-128 0.1285 30 72AG-140 0.1405 28 72AG-147 0.1470 26 72AG-161 0.1610 20 9,000 72AG-128 0.1285 30 72AG-140 0.1405 28 72AG-144 0.1440 27 72AG-157 0.1570 22 10,000 72AG-128 0.1285 30 72AG-136 0.1360 29 72AG-140 0.1405 28 72AG-152 0.1520 24 LP-PROPANE GAS ELEVATION 60,000 BTUH FURNACE 70,000 BTUH FURNACE 75,000 BTUH FURNACE 90,000 BTUH FURNACE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE PART NO ORIF DIA. DRILL SIZE SEA LEVEL 72AG-089 0.0890 43 72AG-099 0.0995 39 72AG-101 0.1015 38 72AG-113 0.1130 33 2,000 72AG-086 0.0860 44 72AG-098 0.0980 40 72AG-099 0.0995 39 72AG-110 0.1100 35 3,000 72AG-086 0.0860 44 72AG-096 0.0960 41 72AG-098 0.0980 40 72AG-110 0.1100 35 4,000 72AG-086 0.0860 44 72AG-096 0.0960 41 72AG-096 0.0960 41 72AG-106 0.1065 36 5,000 72AG-082 0.0820 45 72AG-093 0.0930 42 72AG-096 0.0960 41 72AG-106 0.1065 36 6,000 72AG-082 0.0820 45 72AG-093 0.0930 42 72AG-093 0.0930 42 72AG-104 0.1040 37 7,000 72AG-081 0.0810 46 72AG-089 0.0890 43 72AG-093 0.0930 42 72AG-101 0.1015 38 8,000 72AG-078 0.0780 47 72AG-089 0.0890 43 72AG-089 0.0890 43 72AG-101 0.1015 38 9,000 72AG-078 0.0780 47 72AG-086 0.0860 44 72AG-089 0.0890 43 72AG-098 0.0980 40 10,000 72AG-076 0.0760 48 72AG-086 0.0860 44 72AG-086 0.0860 44 72AG-096 0.0960 41 Reference: NFPA No. 54, ANSI Z 223.1 National Fuel Gas Code Table shows 4% Input Reduction per 1,000 feet elevation. For Canadian High Altitude (2,000-4,500 feet), reduce gas pressure to burner manifold (manifold Ps.) to 3.0" W.C., and 9.0" W.C. for LP (Propane) Gas G17D, G18D Sizes 060-090 WARNING-RISK OF FIRE OF ELECTRICAL SHOCK Only qualified service personnel shall be used to install and provide maintenance of this furnace. P/N: 61GF0011