Allied 92G1UH-P Installation Instructions Manual Download | Manualshive

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507270-03

Page 36 of 60

Issue 1621

When combining the furnace and evaporator coil

drains together, the A/C condensate drain outlet must

be vented to relieve pressure in order for the furnace

pressure switch to operate properly.

IMPORTANT

Figure 52

Condensate Trap with Optional Overflow Switch

Figure 53

Evaporator Coil Using a Common Drain

Figure 54

* Piping from furnace must slope down a minimum of 1/4” per ft. toward trap.

Evaporator Coil Using a Common Drain

(Unit shown in horizontal left-hand discharge position)

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Summary of Contents for 92G1UH-P

Page 1: ...lent service agency or the gas supplier WARNING This manual must be left with the homeowner for future reference A95UH1D A93UH1D 95G1UH P 92G1UH P INSTALLATION INSTRUCTIONS Warm Air Gas Furnace Upflow Horizontal Left and Right Air Discharge P 507270 03 P507270 03 TABLE OF CONTENTS Unit Dimensions 2 Parts Arrangement 3 Gas Furnace 4 Shipping and Packing List 4 Safety Information 4 Use of Furnace as...

Page 2: ...date 20 x 25 x 1 in 508 x 635 x 25 mm cleanable air filter Required to maintain proper air velocity 2 Single side return air with optional RAB Return Air Base 3 Bottom return air 4 Return air from both sides 5 Bottom and one side return air See Blower Performance Tables for additional information 2 Optional External Side Return Air Filter kit is not for use with optional Return Air Base Consider s...

Page 3: ...507270 03 Page 3 of 60 Issue 1621 EXPANDED VIEW Figure 1 ...

Page 4: ...naces must conform with local building codes In the absence of local codes units must be installed according to the current National Fuel Gas Code ANSI Z223 1 NFPA 54 The National Fuel Gas Code is available from the American National Standards Institute Inc 11 West 42nd Street New York NY 10036 Shipping and Packing List 1 Assembled Gas Furnace 1 Bag assembly containing the following 1 Snap bushing...

Page 5: ...ent chilled air from entering the furnace If the damper is manually operated it must be equipped to prevent operation of either the heating or the cooling unit unless it is in the full HEAT or COOL setting When installed this furnace must be electrically grounded according to local codes In addition in the United States installation must conform with the current National Electric Code ANSI NFPA No...

Page 6: ...Note The Commonwealth of Massachusetts stipulates these additional requirements Gas furnaces shall be installed by a licensed plumber or fitter only The gas cock must be T handle type When a furnace is installed in an attic the passageway to and service area surrounding the equipment shall be floored Combustion Dilution Ventilation Air If this unit is installed as a Non Direct Vent Furnace follow ...

Page 7: ...aft can occur in the furnace vent pipe or chimney As a result combustion gases enter the living space creating a potentially dangerous situation In the absence of local codes concerning air for combustion and ventilation use the guidelines and procedures in this section to install these furnaces to ensure efficient and safe operation You must consider combustion air needs and requirements for exha...

Page 8: ...l equipment in the enclosure See Figure 10 When ducts are used they shall be of the same cross sectional area as the free area of the openings to which they connect The minimum dimension of rectangular air ducts shall be no less than 3 inches 75 mm In calculating free area the blocking effect of louvers grilles or screens must be considered If the design and free area of protective covering is not...

Page 9: ... ducts to the back of the furnace Doing so will adversely affect the operation of the safety control devices which could result in personal injury or death Upflow Applications The gas furnaces can be installed as shipped in the upflow position Refer to Figure 13 for clearances Select a location that allows for the required clearances that are listed on the unit nameplate Also consider gas supply c...

Page 10: ...ry and or property damage could result Return Air Guidlines Return air can be brought in through the bottom or either side of the furnace installed in an upflow application If the furnace is installed on a platform with bottom return make an airtight seal between the bottom of the furnace and the platform to ensure that the furnace operates properly and safely The furnace is equipped with a remova...

Page 11: ...t the bottom cap down to release the bottom panel Once the bottom panel has been removed reinstall the bottom cap See Figure 16 Horizontal Applications WARNING Do not install the furnace on its front or its back See Figure 17 Figure 17 Optional Return Air Base Upflow Applications Only Figure 15 Removing the Bottom Panel Figure 16 ...

Page 12: ...trap 3 Provide a service platform in front of unit When installing the unit in a crawl space a proper support platform may be created using cement blocks 4 Route auxiliary drain line so that water draining from this outlet will be easily noticed by the homeowner 5 If necessary run the condensate line into a condensate pump to meet drain line slope requirements The pump must be rated for use with c...

Page 13: ... where this furnace or any other gas fueled appliance i e water heater or carbon monoxide producing device i e wood fireplace is installed When return air is drawn from a room a negative pressure is created in the room If a gas appliance is operating in a room with negative pressure the flue products can be pulled back down the vent pipe and into the room This reverse flow of the flue gas may resu...

Page 14: ...tion Do not use excessive amounts of solvent cement when making joints Good ventilation should be maintained to reduce fire hazard and to minimize breathing of solvent vapors Avoid contact of cement with skin and eyes CAUTION A95UH1D A93UH1D 95G1UH P 92G1UH P exhaust and intake connections are made of PVC Use PVC primer and solvent cement when using PVC vent pipe When using ABS vent pipe use trans...

Page 15: ...th of fitting on outside of pipe 5 Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket NOTE Time is critical at this stage Do not allow primer to dry before applying cement NOTE A sheet metal screw may be used to secure the intake pipe to the connector if desired Use a drill ...

Page 16: ...hile each appliance is operating and the other appliances which are not operating remain connected to the common venting system If the venting system has been installed improperly you must correct the system as indicated in the general venting requirements section CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being pl...

Page 17: ...tack or stack that also serves another gas appliance If vertical discharge through an existing unused stack is required insert PVC pipe inside the stack until the end is even with the top or outlet end of the metal stack CAUTION 5 After the main burner has operated for 5 minutes test for leaks of flue gases at the draft hood relief opening Use the flame of a match or candle 6 After determining tha...

Page 18: ...the velocity of the exhaust gas as it exits the termination Refer to Table 8 In some applications which permit the use of several different sizes of vent pipe a combination vent pipe may be used Contact Allied Air Technical Service for assistance in sizing vent pipe in these applications NOTE It is acceptable to use any pipe size which fits within the guidelines allowed in Tables 5 and 6 NOTE The ...

Page 19: ...ake and exhaust pipe length separately Values in table are for intake OR exhaust not combined total Both intake and exhaust must be same pipe size A93UH1D and 92G1UH P Maximum Allowable Intake or Exhaust Vent Length in Feet Table 5B A93UH1D and 92G1UH P ...

Page 20: ...5UH1D and 95G1UH P Maximum Allowable Intake or Exhaust Vent Length in Feet Size intake and exhaust pipe length separately Values in table are for intake OR exhaust not combined total Both intake and exhaust must be same pipe size Table 6A ...

Page 21: ...507270 03 Page 21 of 60 Issue 1621 Table 6B A95UH1D and 95G1UH P Maximum Allowable Intake or Exhaust Vent Length in Feet ...

Page 22: ...507270 03 Page 22 of 60 Issue 1621 Figure 26 Figure 25 ...

Page 23: ...urnace from the surrounding space the indoor air quality must be considered and guidelines listed in Combustion Dilution and Ventilation Air section must be followed Follow the next two steps when installing the unit in Direct Vent applications where combustion air is taken from outdoors and flue gases are discharged outdoors The provided air intake screen must not be used in direct vent applicati...

Page 24: ...and either straight out or downward in the horizontal position The air intake piping must not terminate too close to the flooring or a platform Ensure that the intake air inlet will not be obstructed by loose insulation or other items that may clog the debris screen 2 Use a sheet metal screw to secure the intake pipe to the connector if desired 1 Use transition solvent cement or a sheet metal scre...

Page 25: ...ly 20 F 6 7 C units with long runs of vent pipe through unconditioned space even when insulated may form ice in the exhaust termination that prevents the unit from operating properly Longer run times of at least 5 minutes will alleviate most icing problems Also a heating cable may be installed on exhaust piping and termination to prevent freeze ups Heating cable installation kits are available See...

Page 26: ...507270 03 Page 26 of 60 Issue 1621 Figure 31 ...

Page 27: ...507270 03 Page 27 of 60 Issue 1621 Figure 32 ...

Page 28: ...h the roof In attic or closet installations vertical termination through the roof is preferred Figures 33 through 43 show typical terminations 1 Intake and exhaust terminations are not required to be in the same pressure zone You may exit the intake on one side of the structure and the exhaust on another side Figure 34 You may exit the exhaust out the roof and the intake out the side of the struct...

Page 29: ...507270 03 Page 29 of 60 Issue 1621 Figure 36 ...

Page 30: ...507270 03 Page 30 of 60 Issue 1621 Figure 37 ...

Page 31: ... is 8 and a minimum distance of 6 with a termination elbow See Figures 36 and 38 7 If intake and exhaust piping must be run up a side wall to position above snow accumulation or other obstructions piping must be supported every 24 610 mm as shown in Figures 36 and 38 When exhaust and intake piping must be run up an with pipe sized per Table 8 The intake piping may be equipped with a 90 elbow turnd...

Page 32: ...Figures 44 through 47 show typical terminations 1 Exhaust piping must terminate straight out or up as shown The termination pipe must be sized as listed in Table 8 The specified pipe size ensures proper velocity required to move the exhaust gases away from the building 2 On field supplied terminations for side wall exit exhaust piping may extend a maximum of 12 inches 305 mm for 2 PVC and 20 508 m...

Page 33: ... to position above snow accumulation or other obstructions piping must be supported every 24 610 mm as shown in Figure 46 When exhaust piping must be run up an outside wall any reduction in exhaust pipe size must be done after the final elbow Figure 44 Figure 45 Figure 46 Figure 47 ...

Page 34: ... PVC fittings glue all joints Glue the provided drain trap as shown in Figure 55 Route the condensate line to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain Do not use copper tubing or existing copper condensate lines for drain line CAUTION Condensate Piping This unit is designed for either right or left side exit of condensate piping in upflow appli...

Page 35: ...ng of condensate 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 3 m kit no 26K69 and 50 ft 15 2 m kit no 26K70 Figure 50 Unit with Cooling Coil Figure 49 Condensate Trap Locations Unit shown in upflow position with remote trap Figure 51 Condensate Trap ...

Page 36: ... pressure in order for the furnace pressure switch to operate properly IMPORTANT Figure 52 Condensate Trap with Optional Overflow Switch Figure 53 Evaporator Coil Using a Common Drain Figure 54 Piping from furnace must slope down a minimum of 1 4 per ft toward trap Evaporator Coil Using a Common Drain Unit shown in horizontal left hand discharge position ...

Page 37: ...507270 03 Page 37 of 60 Issue 1621 Figure 55 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...

Page 38: ...fully check all piping connections factory and field installed for gas leaks Use a leak detecting solution or other preferred means Never use an open flame to test for gas leaks Check all connections using a commercially available soap solution made specifically for leak detection The furnace must be isolated from the gas supply system by closing its individual manual shut off valve during any pre...

Page 39: ...507270 03 Page 39 of 60 Issue 1621 Figure 58 Figure 57 ...

Page 40: ...507270 03 Page 40 of 60 Issue 1621 Table 10 ...

Page 41: ...cing Before connecting the thermostat check to make sure the wires will be long enough for servicing at a later date Make sure that thermostat wire is long enough to facilitate future removal of blower for service Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field wiring diagram shown in Figure 62 Use 18 gauge wire or larger that is suitable for Cla...

Page 42: ...d proper ground Both polarity and proper grounding should be checked before attempting to operate the furnace on either permanent or temporary power Generator should have a wave form distortion of less than 5 THD total harmonic distortion terminals If a humidifier rated at greater than one amp is connected to this terminal it is necessary to use an external relay See Figure 64 for control board co...

Page 43: ...507270 03 Page 43 of 60 Issue 1621 TYPICAL WIRING DIAGRAM Figure 63 ...

Page 44: ...o not attempt to manually light burners on this furnace Each time the thermostat calls for heat the burners will automatically light The ignitor does not get hot when there is no call for heat on these units Do not use this furnace if any part has been underwater A flood damaged furnace is extremely dangerous Attempts to use the furnace can result in fire or explosion Immediately call a qualified ...

Page 45: ...it 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate follow the instructions Turning Off Gas to Unit and call your service technician or gas supplier Turning Off Gas to Unit 1 Set the thermostat to the lowest setting 2 Turn off all electrical power to the unit if se...

Page 46: ...titudes up to 10 000 ft above sea level See table 13 for de rate manifold values Units installed at altitude of 7501 10 000 feet require an orifice change Units installed at altitudes of 4 501 10 000 feet 1371 3048 m may require a pressure switch change which can be ordered separately Table 14 lists required pressure switch changes and orifice conversion kits at varying altitudes The combustion ai...

Page 47: ...71 2286m 7501 10000 ft 2286 3048m 045 No Change 11J09 11J10 070 090 110 135 No Change 11J11 11U68 A93 and 92G1 Pressure Switch at Varying Altitudes Pressure switch is factory set No adjustment necessary All models use the factory installed pressure switch from 0 4500 feet 0 1371 m Unit Size 0 7500 ft 0 2286 m 7501 10000 ft 2286 3048 m Natural to LP Propane LP Propane to Natural High Altitude Natur...

Page 48: ... 2 Visually inspect the venting system for proper size and horizontal pitch Determine there is no blockage or restriction leakage corrosion or other deficiencies which could cause an unsafe condition 3 To the extent that it is practical close all building doors and windows and all doors between the space in which the appliances connected to the venting system are located and other spaces of the bu...

Page 49: ...t Anticipation Set the heat anticipator setting if adjustable according to the amp draw listed on the wiring diagram that is attached to the unit Electrical 1 Check all wiring for loose connections 2 Check for the correct voltage at the furnace with furnace operating Correct voltage is 120 VAC 10 3 Check amp draw on the blower motor with the blower access panel in place Motor Nameplate__________Ac...

Page 50: ...507270 03 Page 50 of 60 Issue 1621 ...

Page 51: ...507270 03 Page 51 of 60 Issue 1621 ...

Page 52: ...507270 03 Page 52 of 60 Issue 1621 BLOWER DATA A95UH1D 95F1UHD ...

Page 53: ...507270 03 Page 53 of 60 Issue 1621 ...

Page 54: ...ower motor with the blower access panel in place Motor Nameplate__________Actual__________ Winterizing and Condensate Trap Care 1 Turn off power to the furnace 2 Have a shallow pan ready to empty condensate water 3 Remove the clean out cap from the condensate trap and empty water Inspect the trap then reinstall the clean out cap Cleaning Heat Exchanger If cleaning the heat exchanger becomes necess...

Page 55: ...nsate trap pipe Reconnect condensate drain line to the condensate trap 36 Reinstall electrical junction box 37 Reinstall the combustion air inducer and flexible no hub connector Reconnect the 2 pin plug to the wire harness 38 Reconnect drain tubes between flue collar and cold end header box 39 Secure burner assembly to vestibule panel using four existing screws Burners are self aligning to center ...

Page 56: ...l 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 performance Unit must be observed during operation to monitor proper performance of the unit and the vent system Combustion gases Flue products should be analyzed and compared to the unit specifications Problems detected during the inspection ...

Page 57: ...quivalent service agency or gas supplier Cabinet Parts Upper Access Panel Blower Access Panel Top Cap Control Panel Parts Transformer Integrated Control Board Door Interlock Switch Blower Parts Blower Wheel Motor Motor Mounting Frame Motor Capacitor Blower Housing Cutoff Plate Heating Parts Flame Sensor Heat Exchanger Assembly Gas Manifold Combustion Air Inducer Gas Valve Main Burner Cluster Main ...

Page 58: ...ondensate Trap Primed Line Sloped Heat Cable Installed and Operable if applicable 2 2 2 1 Horizontal Pipes Sloped if applicable UNIT SET UP 3 4 Flter RETURN AIR Furnace Model Number_______________ Serial Number_________________ 3 DUCT SYSTEM SUPPLY AIR DUCT Sealed Insulated if necessary RETURN DUCT Sealed Filter Installed and Clean Grilles Unobstructed 4 VOLTAGE CHECK Supply Voltage _____ Electric...

Page 59: ...IC 5 Supply External Static _______ Return External Static ______ Total External Static _______ CONDENSATE LINE 6 Leak Free VENT PIPE 7 Leak Free COOLING MODE INDOOR BLOWER AMPS______ 3 TEMPERATURE DROP Return Duct Temperature _________ Supply Duct Temperature _ _______ Temperature Drop _________ 4 DRAIN LINE 8 Leak Free THERMOSTAT Adjusted and Programmed Explained Operation to Owner 9 SUPPLY AIR ...

Page 60: ...imum 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 than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not ...

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