Lennox Allied Air A96UHMV Installation Instructions Manual Download | Manualshive

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506550-01

Page 41 of 66

Issue 1230

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Summary of Contents for Allied Air A96UHMV

Page 1: ...est Columbia SC 29170 Unit Dimensions 2 Parts Arrangement 3 Gas Furnace 4 Shipping and Packing List 4 Safety Information 4 Use of Furnace as a Construction Heater 5 General 6 Setting Equipment 6 Filte...

Page 2: ...D size units that require second stage air volumes over 1800 cfm 850 L S must have one of the following 1 Single side return air with transition to accommodate 20 x 25 x 1 in 508 x 635 x 25 mm air fi...

Page 3: ...506550 01 Page 3 of 66 Issue 1230 A96UHMV Exploded View Figure 1...

Page 4: ...pane gas can lose its scent In case of a leak LP Propanegaswillsettleclosetothefloorandmaybedifficult to smell An LP Propane leak detector should be installed in all LP applications Use only the type...

Page 5: ...its are not recommended for construction heater during any phase of construction Very low return air temperature harmful vapors and operation of the unit with clogged or misplaced filters will damage...

Page 6: ...t supersede local codes in any way Consult authorities having jurisdiction before installation In addition to the requirements outlined previously the following general recommendations should be consi...

Page 7: ...MENT Figure 5 UNIT MUST BE LEVEL SIDE TO SIDE IN ALL APPLICATIONS FOR PROPER OPERATION A SLIGHT TILT TOWARD THE DRAIN IS RECOMMENDED FOR PROPER DRAINAGE TILT THE UNIT SLIGHTLY MAX 1 2 FROM BACK TO FRO...

Page 8: ...See Figure 6 Optional Return Air Base Upflow Applications Only NOTE Optional side return air filter kits are not for use with return air base 1 Both the unit return air opening and the base return ai...

Page 9: ...door must never be used as a portion of the return air duct system The base must provide a stable support and an airtight seal to the furnace Allow absolutely no sagging cracks gaps etc For no reason...

Page 10: ...ssary clearances See Figure 11 2 Construct a raised wooden frame and cover frame with a plywood sheet If unit is installed above finished space fabricate an auxiliary drain pan to be installed under u...

Page 11: ...on by reflected light of the heat exchanger for leaks after the furnace is installed If present this access panel must always be in place when the furnace is operating and it must not allow leaks into...

Page 12: ...sources of ignition Do not use excessive amounts of solvent cement when makeing joints Good ventilation should be maintained to reduce fire hazard and to minimize breathing of solvent vapors Avoid co...

Page 13: ...end of pipe and inside socket surface of fitting Cement should be applied lightly but uniformly to inside of socket Take care to keep excess cement out of socket Apply second coat to end of pipe NOTE...

Page 14: ...are discharged outdoors Intake and exhaust pipe sizing Size pipe according to Tables 4 and 5 Table 4 lists the minimum vent pipe lengths permitted Table 5 lists the maximum pipe lengths permitted Rega...

Page 15: ...vent systems which include multiple pipe sizes Do not use screens or perforated metal in exhaust or intake terminations Doing so will cause freeze ups and may block the terminations IMPORTANT EXHAUST...

Page 16: ...506550 01 Page 16 of 66 Issue 1230 Table 5 MAXIMUM ALLOWABLE VENT LENGTH feet...

Page 17: ...TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN UPFLOW APPLICATIONS Figure 18 Figure 19 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN HORIZONTAL AIR APPLIC...

Page 18: ...as furnace is designed for combustion air intake through an inlet in the unit s top cap Intake air piping is independent of exhaust piping TYPICAL AIR INTAKE PIPE CONNECTIONS IN HORIZONTAL DISCHARGE A...

Page 19: ...506550 01 Page 19 of 66 Issue 1230 VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATiONS IN THE USA AND CANADA Figure 22...

Page 20: ...nother side of the house or structure 2 Intake and exhaust pipes should be placed as close together as possible at termination end refer to illustrations Maximum separation is 3 76 mm on roof terminat...

Page 21: ...ed every 24 610 mm as shown in Figures 24 and 25 In addition close coupled wall termination must be extended for use in this application See Figures 24 and 25 When exhaust and intake piping must be ru...

Page 22: ...506550 01 Page 22 of 66 Issue 1230 DIRECT VENT CONCENTRIC WAL TERMINATION 71M80 69M29 OR 60L46 US 44W92 or 44W93 Canada Figure 27 Figure 28 FLUSH MOUNT SIDE WALL TERMINATION 51W11...

Page 23: ...nsate and blockage of drain line If this is not possible a heat cable kit may be used on the condensate trap and line Heating cable kit is available in various lengths 6 ft 1 8 m kit no 26K68 24 ft 7...

Page 24: ...in from the condensate trap DO NOT connect the condensate trap drain into the drain line from the evaporator coil CAUTION Figure 34 UNIT WITH EVAPORATOR COIL CONDENSATE TRAP LOCATIONS Unit shown in ho...

Page 25: ...outside the furnace cabinet The flexible connector can then be added between the black iron pipe and the gas supply line CAUTION Do not exceed 600 in lbs 50 ft lbs torque when attaching the gas pipin...

Page 26: ...26 of 66 Issue 1230 Figure 36 NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Horizontal Applications Possible Gas Piping Configurations Figure 37 NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSI...

Page 27: ...st fan Close fireplace dampers 4 Follow the lighting instructions Turn ON the appliance that is being inspected Adjust the thermostat so that the appliance operates continuously 5 After the main burne...

Page 28: ...size according to unit nameplate NOTE Unit nameplate states maximum current draw See table for maximum over current protection 2 Holes are on both sides of the furnace cabinet to facilitate wiring 3 I...

Page 29: ...ff differentials and adjustable stage timers The following is a two stage thermostat setup for optimal variable rate capacity mode First heat stage differential set to 1 2 to 1 F second heat stage dif...

Page 30: ...506550 01 Page 30 of 66 Issue 1230 Low Voltage Field Wiring Table 11 R required on some units...

Page 31: ...506550 01 Page 31 of 66 Issue 1230 Low Voltage Field Wiring Table 11 R required on some units...

Page 32: ...506550 01 Page 32 of 66 Issue 1230 Low Voltage Field Wiring Table 11 2 Stage Single Stage...

Page 33: ...506550 01 Page 33 of 66 Issue 1230 TYPICAL WIRING DIAGRAM Figure 40...

Page 34: ...506550 01 Page 34 of 66 Issue 1230 Integrated Control Figure 41...

Page 35: ...fault setting See Table 12 Switch 3 Second Stage Heat On Delay If a single stage thermostat is used the integrated control can be used to energize second stage heat after either 7 minutes or 12 minute...

Page 36: ...Speed Ramping Blower speed ramping may be used to enhance dehumidification performance The switches are factory set at option A which has the greatest effect on blower motor performance Table 16 provi...

Page 37: ...LED This button is used to enable the Error Code Recall mode and the Field Test mode Press the button and hold it to cycle through a menu of options Every five seconds a new menu item will be displaye...

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Page 47: ...506550 01 Page 47 of 66 Issue 1230 COOLING OPERATING SEQUENCE A96UHMV and Single Stage Outdoor Unit Table 19...

Page 48: ...506550 01 Page 48 of 66 Issue 1230 COOLING OPERATING SEQUENCE A96UHMV and Two Stage Outdoor Unit Table 20...

Page 49: ...s is heavier than air and will settle on the floor The gas valve on these units are equipped with a gas control switch Use only your hand to move the control switch Never use tools If the switch will...

Page 50: ...ovides access to the supply pressure tap Remove the threaded plug install a field provided barbed fitting and connect a manometer to measure supply pressure Replace the threaded plug after measurement...

Page 51: ...ox These switches check for proper combustion air inducer operation before allowing ignition trial The switches are factory set and require no adjustment Temperature Rise After the furnace has been st...

Page 52: ...end of the recognition delay and on all subsequent calls for heat in the same heating cycle the intergrated control energizes the combustion air inducer at high speed The control also checks the high...

Page 53: ...ducer is energized at the ignition speed which is approximately the same as the inducer speed at 70 percent firing rate 2 Once the control receives a signal that the low fire pressure switch has close...

Page 54: ...in cap from the condensate trap and empty water Inspect the trap then reinstall the drain cap Cleaning Heat Exchanger If cleaning the heat exchanger becomes necessary follow the below procedures and r...

Page 55: ...anel using four existing screws Make sure burners line up in center of burner ports 37 Reinstall gas valve manifold assembly Reconnect gas supply line to gas valve 38 Reinstall burner box cover 39 Rec...

Page 56: ...be properly in place and provide a seal between the return air and the room where the furnace is installed Return air duct Must be properly attached and provide an air seal to the unit Operating perfo...

Page 57: ...sensor failure no error if just disconnected only show if shorted or out of range 200 Rollout circuit open or previously opened 201 Circulator COM failure no error is if just disconnected only show if...

Page 58: ...506550 01 Page 58 of 66 Issue 1230 Configuring Unit Size Codes...

Page 59: ...506550 01 Page 59 of 66 Issue 1230 Troubleshooting Heating Sequence of Operation Ignition and Call for Low Fire With Two Stage Thermostat...

Page 60: ...506550 01 Page 60 of 66 Issue 1230 Troubleshooting Heating Sequence of Operation continued Call for High Fire With Two Stage Thermostat...

Page 61: ...506550 01 Page 61 of 66 Issue 1230 Troubleshooting Heating Sequence of Operation continued Call for Heat Satisfied...

Page 62: ...506550 01 Page 62 of 66 Issue 1230 Troubleshooting Heating Sequence of Operation continued Ignition and Call for Heat with Single Stage Thermostat...

Page 63: ...506550 01 Page 63 of 66 Issue 1230 Troubleshooting Cooling Sequence of Operation Call for Cooling...

Page 64: ...506550 01 Page 64 of 66 Issue 1230 Troubleshooting Continuous Fan Sequence of Operation Continuous Low Speed Indoor Blower Sequence of Operation...

Page 65: ...rvice agency or gas supplier Cabinet Parts Outer Access Panel Blower Access Panel Top Cap Control Panel Parts Transformer Integrated Control Board Door Interlock Switch Circuit Breaker Blower Parts Bl...

Page 66: ...mum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less t...

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