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Allied Air Enterprises 92G1UH - page 1
506501-01 Page 1 of 48 Issue 1031 *506501-01* This manual must be left with the homeowner for future reference. INST ALLA TION INSTRUCTIONS A95UH, A93UH, 95G1UH & 92G1UH W arm Air Gas Furnace Upflow/Horizont al Left and Right Air Discharge This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manual ...
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Allied Air Enterprises 92G1UH - page 2
506501-01 Page 2 of 48 Issue 1031 Model A 446 17-1/2 A95UH/A93UH B C in. mm in. mm in. mm 416 16-3/8 406 16 090-12 135-20 533 21 505 19-7/8 495 19-1/2 622 24-1/2 594 23-3/8 584 23 D in. mm 283 11-1/8 238 9-3/8 194 7-5/8 070-08 090-16 110-16 110-20 95G1UH/92G1UH 070-12 045-12 045-08 A95UH, A93UH, 95G1UH & 92G1UH Unit Dimensions - inches (mm) 1 N ...
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Allied Air Enterprises 92G1UH - page 3
506501-01 Page 3 of 48 Issue 1031 EXP ANDED VIEW Figure 1 ...
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Allied Air Enterprises 92G1UH - page 4
506501-01 Page 4 of 48 Issue 1031 A95UH, A93UH, 95G1UH &92G1UH Gas Furnace The A95UH/A93UH/95G1UH & 92G1UH Category IV gas furnace is shipped ready for installation in the up flow or horizontal position. The furnace is shipped with the bottom panel in place. The bottom panel must be removed if the unit is to be installed in horizont al or u ...
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Allied Air Enterprises 92G1UH - page 5
506501-01 Page 5 of 48 Issue 1031 Installed Locations This furnace is CSA International certified for installation clearances to combustible material as listed on the unit nameplate and in the table in Figure 10. Accessibility and service clearances must take precedence over fire protection clearances. NOTE: For installation on combustible floors, ...
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Allied Air Enterprises 92G1UH - page 6
506501-01 Page 6 of 48 Issue 1031 • Air filters must be installed in the system and must be maintained during construction. • Air filters must be replaced upon construction completion. • The input rate and temperature rise must be set per the furnace rating plate. • One hundred percent (100%) outdoor air must be provided for combustion air ...
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Allied Air Enterprises 92G1UH - page 7
506501-01 Page 7 of 48 Issue 1031 air is brought into the house for combustion, negative pressure (outside pressure is greater than inside pressure) will build to the point that a down draft 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 ...
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Allied Air Enterprises 92G1UH - page 8
506501-01 Page 8 of 48 Issue 1031 Air from Outside If air from outside is brought in for combustion and ventilation, the confined space shall be provided with two permanent openings. One opening shall be within 12” (305 mm) of the top of the enclosure and one within 12” (305 mm) of the bottom. These openings must communicate directly or by duct ...
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Allied Air Enterprises 92G1UH - page 9
506501-01 Page 9 of 48 Issue 1031 INST ALLA TION Setting Equipment Up flow Applications The gas furnaces can be installed as shipped in the upflow position. Refer to Figure 10 for clearances. Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply , ven ...
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Allied Air Enterprises 92G1UH - page 10
506501-01 Page 10 of 48 Issue 1031 W ARNING Improper installation of the furnace can result in personal injury or death. Combustion and flue products must never be allowed to enter the return air system or air in the living space. Use sheet met al screws and joint tape to seal return air system to furnace. In platform inst allations with furnace re ...
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Allied Air Enterprises 92G1UH - page 11
506501-01 Page 11 of 48 Issue 1031 Removing the Bottom Panel Remove the two screws that secure the bottom cap to the furnace. Pivot the bottom cap down to release the bottom panel. Once the bottom p anel has been removed, reinstall the bottom cap. See Figure 13. Horizontal Applications W ARNING Do not install the furnace on it s front or its back. ...
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Allied Air Enterprises 92G1UH - page 12
506501-01 Page 12 of 48 Issue 1031 Suspended Installation of Horizont al Unit This furnace may be installed in either an attic or a crawl space. Either suspend the furnace from roof raf ters or floor joists, as shown in Figure 16, or install the furnace on a platform, as shown in Figure 17. A horizontal suspension kit (51W10) may be ordered from yo ...
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Allied Air Enterprises 92G1UH - page 13
506501-01 Page 13 of 48 Issue 1031 Return Air -- Horizontal Applications Return air may be brought in only through the end of a furnace installed in the horizont al position. The furnace is equipped with a removable bottom panel to facilit ate installation. See Figure 13. Filters This unit is not equipped with a filter or rack. A field provided fil ...
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Allied Air Enterprises 92G1UH - page 14
506501-01 Page 14 of 48 Issue 1031 A95UH1D/A93UH1D/95G1UH & 92G1UH 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 transitional solvent cement to make connections to the PVC fitting in the unit. IMPORT ANT Use PVC primer and solvent cement or ABS solvent c ...
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Allied Air Enterprises 92G1UH - page 15
506501-01 Page 15 of 48 Issue 1031 Joint Cementing Procedure All cementing of joint s should be done according to the specifications outlined in ASTM D 2855. 1. Measure and cut vent pipe to desired length. 2. Debur and chamfer end of pipe, removing any ridges or rough edges. If end is not chamfered, edge of pipe may remove cement from fitting socke ...
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Allied Air Enterprises 92G1UH - page 16
506501-01 Page 16 of 48 Issue 1031 6. Promptly apply solvent cement to end of pipe and inside socket surface of fitting. Cement should be applied lightly but uniformly to inside of socket. T ake care to keep excess cement out of socket. Apply second coat to end of pipe. 7. Immediately af ter applying last coat of cement to pipe, and while both insi ...
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Allied Air Enterprises 92G1UH - page 17
506501-01 Page 17 of 48 Issue 1031 V ent Piping Guidelines This gas furnace can be inst alled as either a Non-Direct V ent or a Direct V ent gas central furnace. NOTE: In non-Direct V ent installations, combustion air is taken from indoors and flue gases are discharged outdoors. In Direct V ent installations, combustion air is t aken from outdoors ...
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Allied Air Enterprises 92G1UH - page 18
506501-01 Page 18 of 48 Issue 1031 Maximum Allowable V ent Length T able 5 ...
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Allied Air Enterprises 92G1UH - page 19
506501-01 Page 19 of 48 Issue 1031 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSA TE TRAP INST ALLA TION IN UPFLOW DIRECT OR NON-DIRECT VENT APPLICA TIONS Figure 22 Figure 23 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSA TE TRAP INST ALLA TION IN HORIZONT AL DIRECT OR NON-DIRECT VENT APPLICA TIONS (RIGHT HAND DISCHARGE SHOWN) ...
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Allied Air Enterprises 92G1UH - page 20
506501-01 Page 20 of 48 Issue 1031 Int ake Piping (Figures 24 through 27) This gas furnace may be installed in either direct vent or non-direct vent applications. In non-direct vent applications, when intake air will be drawn into the furnace from the surrounding space, the indoor air quality must be considered and guidelines listed in Combustion, ...
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Allied Air Enterprises 92G1UH - page 21
506501-01 Page 21 of 48 Issue 1031 1. Use transition solvent cement or a sheet metal screw to secure the int ake pipe to the inlet air connector . 2. Route piping to outside of structure. Continue with installation following instructions given in general guide lines for piping terminations and in intake and exhaust piping terminations for direct ve ...
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Allied Air Enterprises 92G1UH - page 22
506501-01 Page 22 of 48 Issue 1031 Follow the next two steps when inst alling the unit in Non– Direct V ent applications where combustion air is taken from indoors and flue gases are discharged outdoors . 1. Use field-provided materials and the factory-provided air intake screen to route the intake piping as shown in figure 26 or 27. Maintain a m ...
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Allied Air Enterprises 92G1UH - page 23
506501-01 Page 23 of 48 Issue 1031 VENT TERMINA TION CLEARANCES FOR NON-DIRECT VENT INST ALLA TiONS IN THE USA AND CANADA Figure 28 ...
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Allied Air Enterprises 92G1UH - page 24
506501-01 Page 24 of 48 Issue 1031 VENT TERMINA TION CLEARANCES FOR DIRECT VENT INST ALLA TiONS IN THE USA AND CANADA Figure 29 ...
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Allied Air Enterprises 92G1UH - page 25
506501-01 Page 25 of 48 Issue 1031 Details of Int ake and Exhaust Piping T erminations for Direct V ent Installations NOTE: In Direct V ent installations, combustion air is t aken from outdoors and flue gases are discharged to outdoors. Intake and exhaust pipes may be routed either horizontally through and outside wall or vertically through the roo ...
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Allied Air Enterprises 92G1UH - page 26
506501-01 Page 26 of 48 Issue 1031 5. On field supplied terminations for sidewall exit, exhaust piping may extend a maximum of 12 inches (305 mm) for 2” PVC and 20 inches (508 mm) for 3” (76 mm) PVC beyond the outside wall. Int ake piping should be as short as possible. See Figures 31 and 32. 6. On field supplied terminations, a minimum distanc ...
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Allied Air Enterprises 92G1UH - page 27
506501-01 Page 27 of 48 Issue 1031 Details of Exhaust Piping T erminations for Non-Direct V ent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the roof. In attic or closet installations, vertical termination through the roof is preferred. Figures 37 through 40 show typical terminations. 1. ...
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Allied Air Enterprises 92G1UH - page 28
506501-01 Page 28 of 48 Issue 1031 3. If exhaust piping must be run up a sidewall to position above snow accumulation or other obstructions, piping must be supported every 24” (610 mm) as shown in Figure 39. When exhaust piping must be run up an outside wall, any reduction in exhaust pipe size must be done after the final elbow . Condensate Pipin ...
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Allied Air Enterprises 92G1UH - page 29
506501-01 Page 29 of 48 Issue 1031 NOTE: If necessary the condensate trap may be installed up to 5’ away from the furnace. Use PVC pipe to connect trap to furnace condensate outlet. Piping from furnace must slope down a minimum of 1/4” per ft. toward trap. 1. Determine which side condensate piping will exit the unit, location of trap, field-pro ...
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Allied Air Enterprises 92G1UH - page 30
506501-01 Page 30 of 48 Issue 1031 Do not use copper tubing or existing copper condensate lines for drain line. CAUTION Condensate line must slope downward away from the trap to drain. If drain level is above condensate trap, condensate pump must be used. Condensate drain line should be routed within the conditioned space to avoid freezing of conde ...
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Allied Air Enterprises 92G1UH - page 31
506501-01 Page 31 of 48 Issue 1031 Gas Piping 1. Gas piping may be routed into the unit through either the left or right hand side. Supply piping enters into the gas valve from the side of the valve as shown in Figure 47. Move Bellows grommet to side which gas line enters. Ensure opposite gas line hole is plugged with supplied plug. 2. When connect ...
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Allied Air Enterprises 92G1UH - page 32
506501-01 Page 32 of 48 Issue 1031 Figure 47 NOTE: BLACK IRON PIPE ONL Y TO BE ROUTED INSIDE OF CABINET Horizontal Applications Possible Gas Piping Configurations Figure 48 ...
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Allied Air Enterprises 92G1UH - page 33
506501-01 Page 33 of 48 Issue 1031 Removal of the Furnace from Common V ent In the event that an existing furnace is removed from a venting system commonly run with separate gas appliances, the venting system is likely to be too large to properly vent the remaining attached appliances. Conduct the following test while each appliance is operating an ...
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Allied Air Enterprises 92G1UH - page 34
506501-01 Page 34 of 48 Issue 1031 Electrical ELECTROST A TIC DISCHARGE (ESD) Precautions and Procedures Electrostatic discharge can af fect electronic components. T ake precautions during furnace installation and service to protect the furnace’s electronic controls. Precautions will help to avoid control exposure to electrostatic discharge by pu ...
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Allied Air Enterprises 92G1UH - page 35
506501-01 Page 35 of 48 Issue 1031 Indoor Blower Speeds 1. When the thermostat is set to “F AN ON”, the indoor blower will run continuously on the heating speed when there is no cooling or heating demand. 2. When the furnace is running in the heating mode, the indoor blower will run on the heating speed. 3. When there is a cooling demand, the i ...
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Allied Air Enterprises 92G1UH - page 36
506501-01 Page 36 of 48 Issue 1031 TYPICAL WIRING DIAGRAM Figure 53 ...
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Allied Air Enterprises 92G1UH - page 37
506501-01 Page 37 of 48 Issue 1031 Unit St art-Up FOR YOUR SAFETY READ BEFORE OPERA TING 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 service technician to inspect the furnace and to replace all gas ...
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Allied Air Enterprises 92G1UH - page 38
506501-01 Page 38 of 48 Issue 1031 Priming Condensate T rap The condensate trap should be primed with water prior to start-up to ensure proper condensate drainage. Either pour 10 fl. oz. (300 ml) of water into the trap, or follow these steps to prime the trap: 1. Follow the lighting instructions to place the unit into operation. 2. Set the thermost ...
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Allied Air Enterprises 92G1UH - page 39
506501-01 Page 39 of 48 Issue 1031 Gas Pressure Adjustment Gas Flow (Approximate) Furnace should operate at least 5 minutes before checking gas flow . Determine time in seconds for two revolutions of gas through the meter . (T wo revolutions assures a more accurate time.) Divide by two and compare to time in T able 8. If manifold pressure matches T ...
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Allied Air Enterprises 92G1UH - page 40
506501-01 Page 40 of 48 Issue 1031 T esting for Proper V enting and Sufficient Combustion Air for Non-Direct V ent Applications CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. The following s ...
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Allied Air Enterprises 92G1UH - page 41
506501-01 Page 41 of 48 Issue 1031 Other Unit Adjustment s Primary Limit The primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no adjustment. Flame Rollout Switches (T wo) These manually reset switches are located on the front of the burner box. Pressure Switch The pressure switch is located ...
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Allied Air Enterprises 92G1UH - page 42
506501-01 Page 42 of 48 Issue 1031 Service At the beginning of each heating season, system should be checked as follows by a qualified service technician: Blower Check the blower wheel for debris and clean if necessary . The blower motors are prelubricated for extended bearing life. No further lubrication is needed. The blower access panel must be ...
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Allied Air Enterprises 92G1UH - page 43
506501-01 Page 43 of 48 Issue 1031 21. Remove two screws from the front cabinet flange at the blower deck. S pread cabinet sides slightly to allow clearance for removal of heat exchanger . 22. Remove screws along vestibule sides and bottom which secure vestibule panel and heat exchanger assembly to cabinet. Remove two screws from blower rails which ...
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Allied Air Enterprises 92G1UH - page 44
506501-01 Page 44 of 48 Issue 1031 PLANNED SERVICE A service technician should check the following items during an annual inspection. Power to the unit must be shut off for safety . Fresh air grilles and louvers (on the unit and in the room where the furnace is installed) - Must be open and unobstructed to provide combustion air . Burners - Must be ...
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Allied Air Enterprises 92G1UH - page 45
506501-01 Page 45 of 48 Issue 1031 REP AIR P ARTS LIST The following repair part s are available through Allied Air dealers. When ordering parts, include the complete furnace model number listed on the CSA nameplate. All service must be performed by a licensed professional installer (or equivalent), service agency , or gas supplier . Cabinet Parts ...
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Allied Air Enterprises 92G1UH - page 46
506501-01 Page 46 of 48 Issue 1031 St art-Up & Performance Check List UNIT SET UP ...
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Allied Air Enterprises 92G1UH - page 47
506501-01 Page 47 of 48 Issue 1031 UNIT OPERA TION Heating Mode Cooling Mode ...
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Allied Air Enterprises 92G1UH - page 48
506501-01 Page 48 of 48 Issue 1031 REQUIREMENTS for COMMONWEAL TH of MASSACHUSETTS Modifications to NFP A-54, Chapter 10 Revise NFP A-54 section 10.8.3 to add the following requirement s: For all side wall, horizontally vented, gas-fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, ...
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