Nordyne G7XC Series, Installation Instructions Manual

Page 1: ...e for future reference GAS FURNACES Installation Instructions Upflow Horizontal Model 92 1 AFUE DO NOT DESTROY KEEP IN A SAFE PLACE FOR FUTURE REFERENCE FIRE OR EXPLOSION HAZARD Failure to follow safe...

Page 2: ...CE INSTALLATION 12 General Requirements 12 Direct Vent 2 Pipe Applications 12 Upflow Installation 12 Side Return Air Inlet 12 Bottom Return Air Inlet 12 Horizontal Installation 12 Bottom Panel Removal...

Page 3: ...nd position as specified in Table 1 page 5 Provide adequate combustion and ventilation air to the furnace space as specified on pages 4 8 Provide adequate clearances around the vent air intake termina...

Page 4: ...stallation in a Garage WARNING Do not place combustible material on or against the furnace cabinet or within 6 inches of the vent pipe Do not place combustible materials including gasoline and any oth...

Page 5: ...e operating at maximum speed Do not operate a summer exhaust fan 6 Follow the lighting instructions Place the appliance being inspected into operation Adjust the thermostat so appliance is operating c...

Page 6: ...inside the house resulting in improper furnace operationorunsafeconditionssuchasflameroll out It is imperative that sufficient air exchange with the outdoors is provided to prevent depressurization Ad...

Page 7: ...d at 45 000 Btuh input and a furnace rated at 75 000 Btuh requires a volume of 6 000 cubic feet 50 x 45 75 6 000 to be considered unconfined If the space has an 8 foot ceiling the floor area of the sp...

Page 8: ...ible surfaces However itisgoodpracticetoallowspaceforconvenience in installation and service VENTING REQUIREMENTS This furnace is classified as a Category IV appliance which requires special venting m...

Page 9: ...ed areas and do not terminate above any public walkways If venting horizontally a side wall vent kit is available according to the pipe diameter size of the installation kit 904349 Please follow the i...

Page 10: ...ted in the Table For extremely cold climates or for conditions of short furnace cycles i e set back thermostat conditions the last 18 inches of vent pipe can be reduced It is acceptable to reduce from...

Page 11: ...is installed which uses the furnace blower to provide airflow over the indoor coil the coil must be installed downstream on the outlet side of the furnace or in parallel with the furnace If a cooling...

Page 12: ...oranycombustiblematerialother than wood flooring The G7XC gas furnace may be installed directly on combustible wood flooring or supports For venting guidelines and specifications see Venting Requirem...

Page 13: ...m panel 2 out through the front of the furnace 7 Reassemble the furnace in reverse order Inducer Assembly Rotation WARNING Inducer rotation must be completed before the furnace is connected to gas and...

Page 14: ...are included in the extra parts bag that is supplied with the purchase of your furnace Depending on your particular installation some of these components are optional and may not be used Please refer...

Page 15: ...of the condensate drain lines will depend on the configuration selected in Table 4 page 14 The drain lines can be routed out the left or right side of the furnace but must maintain a downward slope t...

Page 16: ...nd or damage to the furnace Leak Check WARNING FIRE OR EXPLOSION HAZARD Never test for gas leaks with an open flame Check all connections using a commercially available soap solution A fire or explosi...

Page 17: ...B 7 See Note B Right Side Entry Left Side Entry 1 7 4 See Note A See Note A 3 9 5 8 9 3 5 6 2 Figure 19 Typical Gas Connection ITEM and COMPONENT 1 Automatic Gas Valve w manual shut off 2 Burner Asse...

Page 18: ...any of the original wires supplied with the furnace the replacement wire must be copper wiring and have a temperature rating of at least 105 F 40 C Low Voltage Wiring The thermostat must be installed...

Page 19: ...Figure 21 or the wiring diagram label inside of the control door Twinning The control boards on fixed speed furnaces are capable of being twinned to other furnaces of the same series only if the follo...

Page 20: ...OT install a jumper wire across a switch to defeat its function Verify the blower door is in place closing the door switch in the line voltage circuit Verify the gas line has been purged and all conne...

Page 21: ...door must be installed during unattended operation 1 Remove the burner compartment door 2 Set the thermostat above room temperature and observe the ignition sequence The burner flame shouldcarryoveri...

Page 22: ...he heating cooling and fan modes are described below Refer to the field and furnace wiring diagrams Figure 15 page 16 Figure 16 page 17 and Figure 23 page 29 Heating Cycle 1 The thermostat calls for h...

Page 23: ...n monoxide poisoning that could result in personal injury or death Lubrication DESCRIPTION OF COMPONENTS Thedescriptionsbelowarevariousfunctionalcomponents that affect the operation and shutting down...

Page 24: ...furnace operates when the Blower Limit Switch is reset contact a qualified service technician to identify and repair the problem If the furnace still doesn t operate check the Flame Roll out Switches...

Page 25: ...EW 4 KNOCKOUTS BOTH SIDES 1 LEFT SIDE RIGHT SIDE HOLE FOR THERMOSTAT CONDENSATE HOLE FOR ELECTRIC CONDENSATE HOLE FOR ELECTRIC 3 7 HOLE FOR THERMOSTAT 3 HOLE FOR VENT PIPE FLUE INLET AIR Figure 25 Fur...

Page 26: ...1 085 36 1 045 37 1 0 1 1 1 350 30 1 315 30 1 280 31 1 245 31 1 205 33 1 170 33 1 135 35 1 100 36 0 1 1 1 1 390 29 1 350 29 1 315 30 1 275 31 1 240 2 1 200 33 1 160 34 1 125 35 1 1 1 1 1 420 29 1 380...

Page 27: ...0 65 1 305 67 1 260 69 1 210 72 1 165 75 1 120 78 1 0 0 0 1 465 59 1 420 62 1 375 63 1 330 65 1 290 67 1 245 70 1 200 72 1 155 75 0 1 0 0 1 555 56 1 510 58 1 470 59 1 425 61 1 380 63 1 340 65 1 295 67...

Page 28: ...176 353 48 75 375 750 104 35 173 346 50 72 360 720 106 34 170 340 52 69 346 692 108 33 167 333 54 67 333 667 110 33 164 327 56 64 321 643 112 32 161 321 58 62 310 621 114 32 158 316 60 60 300 600 116...

Page 29: ...9 0 9 0 MANIFOLD PRESSURE 8 000 to 10 000 FT 51 51 51 51 ORIFICE SIZE 8 5 8 5 8 5 8 5 MANIFOLD PRESSURE Table 12 High Altitude Deration Propane Gas PROPANE ALTITUDE ABOVE SEA LEVEL INPUT BTU 46 000 61...

Page 30: ...MODELS SINGLE STAGE THERMOSTAT TO OUTDOOR UNIT COOL FAN SPEED HEAT HIGH COOL FAN HEAT MH ML LOW GREEN BLACK WHITE YELLOW YELLOW BLACK RED BLACK BLACK BLACK GREEN BLACK BLACK WHITE BLACK WHITE RED GREY...

Page 31: ...See View A See View A PVC Cap Plug Exhaust Vent See View B Drain Line Attached to 3 4 x 1 2 Hose Barb PVC TEE and Reducer Option 2 X See View C Inline Drain This drain not needed if X is less than 6...

Page 32: ...ed with J Trap or field supplied loop Inline Drain Header Box Drain VIEW D VIEW E Inline Drain See View G See View G Plug See View E See View E See View D Drain Line Attached to 3 4 x 1 2 Hose Barb Ex...

Page 33: ...t Air PVC Cap PVC Cap See View H See View I See View H Plug See View I Plug See View K See View K See View J Exhaust Vent PVC TEE and Reducer Drain Line Attached to 3 4 x 1 2 Hose Barb See View J Inle...

Page 34: ...t as Close to Furnace as Possible Straight Neoprene Couplings with 2 Hose Clamps Upward Pitch 1 4 Per Foot Exhaust Vent 5 Combustion Air Vent Pipe 7 90 Elbows 90 Elbow Exhaust Vent Combustion Air Exha...

Page 35: ...nsor 7 Gas Manifold 8 Gas Valve 9 Igniter 10 Inducer Assembly 11 Limit Switch 12 Main Air Limit Switch 13 Motor Control Board 14 Pressure Switch s B C D cabinets only 15 Roll Out Switch s 16 Transform...

Page 36: ...ly for combustion and ventilation YES NO Installation Altitude ____________________ FT Deration Percentage ___________________ Furnace Input _______________________ Btuh Supply Air Temperature _______...