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Allied Air A93UH1E Installation Instructions Manual

Warm air gas furnace
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Upflow/Horizontal 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 manuals, be alert to
the potential for personal injury or death.
Unit Dimensions ..........................................................2
Parts Arrangement.......................................................3
Gas Furnace ................................................................4
Shipping and Packing List ...........................................4
Safety Information .......................................................4
General ........................................................................6
Combustion, Dilution & Ventilation Air .........................7
Installation .................................................................10
Filters .........................................................................13
Duct System ..............................................................13
Venting Practices .......................................................16
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional installer (or
equivalent), service agency or the gas supplier.
Manufactured By
Allied Air Enterprises LLC
215 Metropolitan Drive
West Columbia, SC 29170
507867-02
INSTALLATION INSTRUCTIONS
A93UH1E & 92G1UHE
Warm Air Gas Furnace
This manual must be left with the homeowner for future reference.

Table of Contents

WARNING
Save these instructions for future reference
Condensate Piping ....................................................33
Gas Piping .................................................................36
Electrical ....................................................................39
Unit Start-Up ..............................................................42
Air for Non-Direct Vent Applications ..........................46
Other Unit Adjustments..............................................46
Blower Performance ..................................................48
Service.......................................................................51
Planned Service ........................................................53
Repair Parts List ........................................................53
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
*P507867-02*
Issue 2128
CAUTION
(P) 507867-02
Page 1 of 54

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  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS A93UH1E & 92G1UHE Warm Air Gas Furnace Upflow/Horizontal Left and Right Air Discharge This manual must be left with the homeowner for future reference. This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death.

  • Page 2: Unit Dimensions

    Unit Dimensions FRONT VIEW SIDE VIEW Capacity 030-B12 045-B12 17-1/2 16-3/8 1-5/8 070-B12 090-C12 090-C16 19-7/8 19-1/2 9-3/8 110-C16 110-C20 Page 2 of 54 Issue 2128 507867-02...

  • Page 3: Parts Arrangement

    Parts Arrangement Top Cap Flexible No-HJB Burner Box Exhaust Collar Assembly Heat Exchanger Assembly Gas Valve Combustion Air Inducer Cabinet Bag Assemblies Combustion Air Pressure Prove Switch Blower Assembly Cold End Blower Header Box Access Door Control Box (includes integrated ignition control, transformer and interlock switch) Figure 1.

  • Page 4: Gas Furnace

    1 - Snap Plug return air. 1 - Wire tie The A93UH1E & 92G1UHE can be installed as either a 1 - Condensate trap Direct Vent or a Non-Direct Vent gas central furnace 1 - Condensate trap cap...
  • Page 5 Building Codes When installed, this furnace must be electrically grounded according to local codes. In addition, in the United States, In the USA, installation of gas furnaces must conform with installation must conform with the current National local building codes. In the absence of local codes, units Electric Code, ANSI/NFPA No.

  • Page 6: General

    Use of Furnace as a Construction Heater NOTWITHSTANDING THE FOREGOING, INSTALLER IS RESPONSIBLE FOR CONFIRMING THAT THE USE Units may be used for heating of buildings or structures OF CONSTRUCTION HEAT IS CONSISTENT WITH under construction, if the following conditions are met to THE POLICIES AND CODES OF ALL REGULATING ensure proper operation.

  • Page 7: Combustion, Dilution & Ventilation Air

    and other contaminants which can corrode furnace Combustion, Dilution & Ventilation Air components. If this unit is installed as a Non-Direct Vent Furnace, follow the guidelines in this section. CAUTION Do not install the furnace in a corrosive or contaminated NOTE: In Non-Direct Vent Installations, combustion air is atmosphere.
  • Page 8 Air for combustion and ventilation can be brought into the confined space either from inside the building or from outside. Air from Inside If the confined space that houses the furnace adjoins a space categorized as unconfined, air can be brought in by providing two permanent openings between the two spaces.
  • Page 9 Ventilation Louvers Inlet Air Roof Terminated (Minimum 12 in. Exhaust Pipe (305mm) above Attic Floor) *Intake Debris Screen (Provided) Furnace * See Maximum Vent Lengths table NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch per 4,000 Btu (645mm per 1.17kW) per hour of the total input rating of all equipment in the enclosure.

  • Page 10: Installation

    Select a location that allows for the required clearances Installation that are listed on the unit nameplate. Also consider gas supply connections, electrical supply, vent connection, and installation and service clearances [24 inches (610 mm) at Setting Equipment unit front]. The unit must be level. WARNING WARNING Improper installation of the furnace can result in...
  • Page 11 return air base or field-fabricated transition to accommodate an optional IAQ accessory taller than 14.5”. See Figure 14. Left Side Right Side Bottom (floor) Top/Plenum 1 in. (25 mm) *Front Back Sides 0† Vent Figure 14. Side Return Air (with Transition and Filter) Floor 0‡...
  • Page 12 Removing the Bottom Panel Right-Hand Discharge 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 panel has been removed, reinstall Left End Right End the bottom cap.

  • Page 13: Filters

    NOTE: Heavy-gauge sheet metal straps may be used to Filters suspend the unit from roof rafters or ceiling joists. When straps are used to suspend the unit in this way, support must be provided for both the ends. The straps must not This unit is not equipped with a filter or rack.
  • Page 14 F656 PVC Solvent Cement D2564 IMPORTANT CPVC Solvent Cement F493 A93UH1E & 92G1UHE exhaust and intake connections ABS Solvent Cement D2235 are made of PVC. Use PVC primer and solvent cement PVC/CPVC/ABS All Purpose Cement For D2564, D2235, when using PVC vent pipe. When using ABS vent pipe, Fittings &...
  • Page 15 STANDARD CONCENTRIC Outdoor Outdoor Exhaust 1-1/2” 2” 3” Exhaust Flush Accelerator Concentric Concentric Concentric VENT Accelerator Mount Kit Capacity PIPE DIA. (Dia. X Length) (Dia. X Length) (in.) 71M80 69M29 60L46 1-1/2” X 12” 2” X 12” 51W11 ** or 44W93+ +44W92++ +44W92++ 1-1/2...

  • Page 16: Venting Practices

    Removal of the Furnace from Common Vent during assembly (but not after pipe is fully inserted) to distribute cement evenly. Do not turn ABS or cellular In the event that an existing furnace is removed from core pipe. a venting system commonly run with separate gas appliances, the venting system is likely to be too large to NOTE: Assembly should be completed within 20 properly vent the remaining attached appliances.
  • Page 17 Intake and exhaust pipe sizing - Size pipe according to Table 4 and Table 5 through Table 6. Table 4 lists the minimum vent pipe lengths permitted. Table 5 and Table 6 list the maximum pipe lengths permitted for A93UH1E & 92G1UHE. 507867-02...
  • Page 18 IMPORTANT Do not use screens or perforated metal in exhaust or intake terminations. Doing so will cause freeze-ups and may block the terminations. Use Figure 24 to correctly size vent pipe diameter. 030, 045, Furnace capacity? 070, 090, Standard or Which termination? Concentric? See Table 3...
  • Page 19 A93UH1E & 92G1UHE Maximum Allowable Intake or Exhaust Vent Length in Feet Standard Termination at Elevation 0 - 10,000 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Capacity Capacity Capacity Capacity 90° Elbows Used 030 / 030 /...
  • Page 20 A93UH1E & 92G1UHE Maximum Allowable Exhaust Vent Length with Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl Space for Intake in Feet Standard Termination at Elevation 0 - 10,000 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3"...
  • Page 21 TYPICAL EXHAUST PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON-DIRECT VENT APPLICATIONS (RIGHT-HAND DISCHARGE SHOWN) NOTE: 1-1/2” Vent Pipe Diameter Allowed Only on 030/045/070 Units 12” max. 2” 1-1/2” 2” 3” TRANSITION TRANSITION 2” **2” 2” 2” *2” *2” **2” EXHAUST EXHAUST EXHAUST 45°...
  • Page 22 TYPICAL INTAKE PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON-DIRECT VENT APPLICATION (RIGHT-HAND DISCHARGE SHOWN) 2” 1-1/2” 2” 3” TRANSITION TRANSITION 2” 2” 2” **2” *2” **2” *2” INTAKE * When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible. ** When transitioning down in pipe size, use at least 1 foot of 2"...
  • Page 23 at the termination point to accommodate the debris screen. CAUTION Use a sheet metal screw to secure the intake pipe to If this unit is being installed in an application with the connector, if desired. combustion air coming in from a space serviced by an exhaust fan, power exhaust fan, or other device which Ventilation Louvers may create a negative pressure in the space, take care...
  • Page 24 vent, Category IV gas furnace. In Direct Vent applications, combustion air is taken from outdoors and the flue gases are discharged to the outdoors. This furnace is then classified as a direct vent, Category IV gas furnace. Conditioned Space Exhaust Pipe Pipe Insulation Intake...
  • Page 25 ‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor. Allied Air recommends avoiding this location if possible. Figure 34. Vent Termination Clearances for Non-Direct Vent Installations...
  • Page 26 ‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor. Allied Air recommends avoiding this location if possible. Figure 35. Vent Termination Clearances for Direct Vent Installations...
  • Page 27 Details of Intake and Exhaust Piping In both Non–Direct Vent and Direct Vent applications, the vent termination is limited by local building codes. In the Terminations for Direct Vent Installations absence of local codes, refer to the current National Fuel NOTE: In Direct Vent installations, combustion air is taken Gas Code ANSI Z223-1/NFPA 54 in U.S.A., and current from outdoors and flue gases are discharged to outdoors.
  • Page 28 On field supplied terminations for sidewall exit, exhaust 3” (76MM) MIN. SIZE PER EXHAUST PIPE piping may extend a maximum of 12 inches (305 mm) Inches (MM) TERMINATION SIZE for 2” PVC and 20 inches (508 mm) for 3” (76 mm) REDUCTION TABLE PVC beyond the outside wall.
  • Page 29 1 1/2” (38mm) accelerator provided on 71M80 & 44W92 EXHAUST kits for -045 and -070 models VENT FLASHING 12” (305mm) INTAKE (Not Furnished) Minimum Above Average Snow Accumulation SHEET METAL STRAP (Clamp and sheet metal strap must be field installed to support the weight of the termination kit.) CLAMP FIELD-PROVIDED...
  • Page 30 FIELD FABRICATED WALL TERMINATION NOTE − FIELD−PROVIDED REDUCER MAY BE 2” (51mm) 3” (76mm) REQUIRED TO ADAPT LARGER VENT PIPE SIZE Vent Pipe Vent Pipe TO TERMINATION A− Minimum clearance above grade or average 12” (305 mm) 12” (305 mm) snow accumulation B−...
  • Page 31 Details of Exhaust Piping Terminations for Non- Direct Vent 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 SIZE TERMINATION PER EXHAUST PIPE is preferred.
  • Page 32 Exhaust through Crawl Space Vent Option All 33” condensing gas furnaces (92%+) are now approved Exhaust from to be vented down through a crawl space. Ensure a vent Furnace pipe drain kit, 51W18 (USA) or 15Z70 (Canada), is used as To Termination directed through the floor joists and into the crawl space.

  • Page 33: Condensate Piping

    Install drain trap using appropriate PVC fittings, glue Condensate Piping all joints. Glue the provided drain trap as shown in Figure 58. Route the condensate line to an open drain. This unit is designed for either right or left side exit of Condensate line must maintain a 1/4”...
  • Page 34 * Piping from furnace must slope down a minimum of 1/4” per ft. toward trap. Figure 54. Evaporator Coil Using a Separate Drain (Unit shown in horizontal right-hand discharge position) Figure 55. Evaporator Coil Using a Separate Drain Figure 56. Evaporator Coil Using a Common Drain * Piping from furnace must slope down a minimum of 1/4”...
  • Page 35 Figure 58. Trap / Drain Assembly Using 1/2” PVC or 3/4” PVC 507867-02 Issue 2128 Page 35 of 54...

  • Page 36: Gas Piping

    When connecting gas supply, factors such as length of run, number of fittings and furnace rating must be considered to avoid excessive pressure drop. Table 9 list recommended pipe sizes for typical applications. NOTE: Use two wrenches when connecting gas piping to avoid transferring to the manifold.
  • Page 37 IMPORTANT WARNING When testing pressure of gas lines, gas valve must be FIRE OR EXPLOSION HAZARD disconnected and isolated. See Figure 60. Gas valves Failure to follow the safety warnings exactly could can be damaged if subjected to pressures greater than result in serious injury, death, or property damage.
  • Page 38 Gas Pipe Capacity - FT³/HR (kL/HR) Nominal Length of Pipe - feet (m) Internal Iron Pipe Diameter Size - - inches inches (3.048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336) (24.384) (27.432) (30.480) (mm) (mm) .622 (12.7) (17.799) (4.96) (3.40) (2.75) (2.32) (2.07) (1.87)

  • Page 39: Electrical

    Refer to Figure 66 for field wiring and Figure 67 for Electrical schematic wiring diagram and troubleshooting. The power supply wiring must meet Class I restrictions. ELECTROSTATIC DISCHARGE (ESD) Protected by either a fuse or circuit breaker, select circuit protection and wire size according to unit nameplate. Precautions and Procedures NOTE: Unit nameplate states maximum current draw.
  • Page 40 Indoor Blower Speeds the circuit connected to ground or the “C” terminal. See Figure 68 for control board configuration. This terminal is When the thermostat is set to “FAN ON”, the indoor energized in the heating mode when the combustion air blower will run continuously on the heating speed inducer is operating.
  • Page 41 Figure 67. Typical Wiring Diagram 507867-02 Issue 2128 Page 41 of 54...

  • Page 42: Unit Start-Up

    Terminal Designations 120 HUM Humidifier (120 VAC) LINE Input (120 VAC) XFMR Transformer (120 VAC) CIRC Indoor Blower (120 VAC) Electronic Air Cleaner (120 VAC) COOL Blower - Cooling Speed (24 VAC) HEAT Blower - Heating Speed (24 VAC) Blower - Fan Speed (24 VAC) PARK Dead terminals to park all speed taps NEUTRALS...
  • Page 43 Priming Condensate Trap Move gas valve switch to ON. See Figure 69. The condensate trap should be primed with water prior Replace the upper access panel. to start-up to ensure proper condensate drainage. Either 10. Turn on all electrical power to the unit. pour 10 fl.
  • Page 44 Gas Pressure Adjustment Start unit and allow 5 minutes for unit to reach steady state. Gas Flow (Approximate) While waiting for the unit to stabilize, observe the Seconds for One Revolution flame. Flame should be stable and should not lift from Natural burner.
  • Page 45 0 - 7,500 ft 7,501 - 10,000 ft (0 - 2,286 m) (2,286 - 3,048 m) Capacity High Altitude High Altitude Natural to LP/Propane LP/Propane to Natural LP/Propane Burner Natural Burner Orifice Kit Orifice Kit 17H62+ 17H90 11K50+ 73W80* 51W01 11K45+ * Conversion requires installation of a gas valve regulator spring which is provided with the gas conversion Kit.

  • Page 46: Testing For Proper Venting And Sufficient Combustion Air For Non-Direct Vent Applications

    Testing for Proper Venting and Sufficient Combustion Air for Non-Direct Vent Applications Seal any unused openings in the venting system. Visually inspect the venting system for proper size WARNING and horizontal pitch. Determine there is no blockage CARBON MONOXIDE POISONING HAZARD or restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.
  • Page 47 Blower Speeds speed to maintain the temperature rise within the range shown on the unit nameplate. See Table 15 for allowable Follow the steps below to change the blower speeds. heating speeds. Increase the blower speed to decrease Turn off electrical power to furnace. the temperature.

  • Page 48: Blower Performance

    Blower Performance A93UH1E030B12A / 92G1UH030BE12 Performance (Less Filter) External Air Volume / Watts at Various Blower Speeds Static High Medium-High Medium Medium-Low Pressure Watts Watts Watts Watts Watts in. w.c. 0.10 1400 1130 0.20 1360 1085 0.30 1325 1055 0.40 1300 1020 0.50...
  • Page 49 A93UH1E090C12A / 92G1UH090CE12 Performance (Less Filter) External Air Volume / Watts at Various Blower Speeds Static High Medium-High Medium Medium-Low Pressure Watts Watts Watts Watts Watts in. w.c. 0.10 1375 1315 1125 0.20 1340 1285 1090 0.30 1310 1260 1055 0.40 1275 1225...
  • Page 50 Page 50 of 54 Issue 2128 507867-02...

  • Page 51: Service

    Allowable Heating Speeds Model Yellow Blue Brown Black 030-12 Allowed Factory Setting Allowed Allowed Not Allowed 045-12 Allowed Factory Setting Allowed Allowed Not Allowed 070-12 Not Allowed Allowed Factory Setting Allowed Not Allowed 090-12 Not Allowed Not Allowed Allowed Factory Setting Not Allowed 090-16 Not Allowed...
  • Page 52 Cleaning the Burner Assembly 10. Reinstall the burner/manifold assembly using the existing four screws. Burners are self aligning to Turn off gas and electrical power to the furnace. center of clam shells. Remove heating compartment access panel. 11. Reconnect ground wire. Disconnect the gas supply line from the gas valve.

  • Page 53: Planned Service

    Repair Parts List The following repair parts 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.
  • Page 54 Requirements for Commonwealth of Massachusetts Modifications to NFPA-54, Chapter 10 INSPECTION. The state or local gas inspector of the side wall, horizontally vented, gas-fueled equipment Revise NFPA-54 section 10.8.3 to add the following shall not approve the installation unless, upon requirements: inspection, the inspector observes carbon monoxide For all side wall, horizontally vented, gas-fueled equipment...

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