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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.
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
Unit Dimensions ..........................................................2
A80UH1EX & 80G1UHEX Gas Furnace .....................3
Shipping & Packing List ...............................................3
Safety Information .......................................................3
General ........................................................................5
Combustion, Dilution & Ventilation Air .........................5
Setting Equipment .......................................................8
Filters .........................................................................11
Duct System ..............................................................11
Venting.......................................................................12
*P507651-01*
(P) 507651-01
507651-01
INSTALLATION INSTRUCTIONS
A80UH1EX & 80G1UHEX
Warm Air Gas Furnace
This manual must be left with the homeowner for future reference.
CAUTION
Table of Contents
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.
Gas Piping .................................................................18
Electrical ....................................................................20
Unit Start-Up ..............................................................25
Heating Sequence of Operation ...............................26
Gas Pressure Adjustment ..........................................26
Other Unit Adjustments..............................................28
Blower Performance ..................................................29
Service.......................................................................31
Repair Parts List ........................................................32
A Lennox International, Inc. Company
Issue 1907
WARNING
Manufactured By
Allied Air Enterprises LLC
215 Metropolitan Drive
West Columbia, SC 29170
Page 1 of 32
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Summary of Contents for Allied A80UH1EX Series
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Page 1: Table Of Contents
Blower Performance ..........29 Filters .................11 Service...............31 Duct System ..............11 Repair Parts List ............32 Venting...............12 Manufactured By *P507651-01* Allied Air Enterprises LLC A Lennox International, Inc. Company (P) 507651-01 215 Metropolitan Drive West Columbia, SC 29170 507651-01 Issue 1907 Page 1 of 32... -
Page 2: Unit Dimensions
Unit Dimensions 3-1/8 (79) NOTE - C*20 units that require air volumes over 1800 cfm (850 L/s) must have one of the following: Return air from single side transition will accommodate 20 x 25 x1 in. (508 x 635 x 25) cleanable air filter. (Required to maintain proper air velocity) Single side return air with optional RAB Return Air SUPPLY AIR... -
Page 3: A80Uh1Ex & 80G1Uhex Gas Furnace
Certifications A80UH1EX & 80G1UHEX Gas Furnace These units are CSA International certified to ANSI Z21.47. In the USA, installation of gas furnaces must conform with The A80UH1EX & 80G1UHEX unit is shipped ready for local building codes. In the absence of local codes, units installation in the upflow or horizontal position fueled by must be installed according to the current National Fuel natural gas. - Page 4 MANUFACTURER’S basements, garages, crawl spaces and utility rooms in the EQUIPMENT LIMITED WARRANTY. ALLIED upflow or horizontal position. DISCLAIMS ALL LIABILITY IN CONNECTION WITH INSTALLER’S FAILURE TO FOLLOW THE ABOVE This furnace design has not been CSA International INSTALLATION INSTRUCTIONS.
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Page 5: General
NOTWITHSTANDING THE FOREGOING, INSTALLER Combustion, Dilution & Ventilation Air IS RESPONSIBLE FOR CONFIRMING THAT THE USE OF CONSTRUCTION HEAT IS CONSISTENT WITH THE POLICIES AND CODES OF ALL REGULATING In the past, there was no problem in bringing in sufficient ENTITIES. - Page 6 a platform in a confined space such as a closet or small equipment room. Even a small leak around the base of the CAUTION unit at the platform or at the return air duct connection can cause a potentially dangerous negative pressure condition. Do not install the furnace in a corrosive or contaminated Air for combustion and ventilation can be brought into the atmosphere.
- Page 7 per 4,000 Btu (1.17 kW) per hour of total input rating of all equipment in the enclosure. See Figure 3 and Figure 4. When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 square inch (645 mm2) per 2,000 Btu (.56 kW) per total input rating of all equipment in the enclosure.
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Page 8: Setting Equipment
Upflow Applications Setting Equipment Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for closet or alcove installations are shown in Figure 7. WARNING Do not install the furnace on its front or its back. Do not connect the return air ducts to the back of the furnace. - Page 9 Return Air - Upflow Applications 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.
- Page 10 * Front clearance in alcove installation must be 24 in. (610 The furnace can be installed in horizontal applications. mm). Maintain a minimum of 24 in. (610 mm) for front Order horizontal suspension kit (51W10) from Allied Air, or service access. use equivalent suspension method.
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Page 11: Filters
Filters CAUTION This unit is not equipped with a filter or rack. A field provided If this unit is being installed in a space serviced by an high velocity filter is required for the unit to operate properly. exhaust fan, power exhaust fan, or other device which Table 1 lists recommended filter sizes. -
Page 12: Venting
Supply Air Plenum Venting If the furnace is installed without a cooling coil, a removable access panel must be installed in the supply air duct. The A 4 inch diameter flue transition is factory installed on the access panel should be large enough to permit inspection combustion air inducer outlet of all models. - Page 13 Venting Using a Masonry Chimney The following additional requirements apply when a lined masonry chimney is used to vent this furnace. • Masonry chimneys used to vent Category I central furnaces must be either tile lined or lined with a listed metal lining system or dedicated gas vent.
- Page 14 A fan assisted furnace may be commonly vented into an Single appliance vents - If the vertical vent or tile lined existing lined masonry chimney if the following conditions chimney has a larger diameter or flow area than the vent are met: connector, use the vertical vent diameter to determine the minimum vent capacity and the vent connector...
- Page 15 MINIMUM LENGTH = AS SHORT AS PRACTICAL. INTERIOR TILE-LINED FOR MAXIMUM LENGTH SEE NOTE TO LEFT MASONRY CHIMNEY NOTE- Refer to provided venting tables for installations. NOTE - The chimney must be properly sized per provided venting tables or lined with listed metal lining system. VENT CONNECTOR OTHER...
- Page 16 Capacity of Type B Double Wall Vents with Type B Double Wall Connectors Serving a Single Category I Appliance Vent and Connector Diameter - D (inches) 3 inch 4 inch 5 inch 6 inch Height H Lateral L (feet) (feet) Appliance Input Rating in Thousands of Btu per Hour NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system.
- Page 17 Vent Connector Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Vent and Connector Diameter - D (inches) Vent Connector 3 inch 4 inch 5 inch 6 inch Height H Rise R Appliance Input Rating in Thousands of Btu per Hour (feet)
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Page 18: Gas Piping
Removal of the Furnace from Common Vent Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in In the event that an existing furnace is removed from Appendix G. These are in the current standards of the a venting system commonly run with separate gas National Fuel Gas Code ANSI 2223.1. - Page 19 IMPORTANT CAUTION Compounds used on threaded joints of gas piping must Some soaps used for leak detection are corrosive to be resistant to the actions of liquified petroleum gases. certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use matches, candles, flame or other sources of ignition to check for NOTE: If emergency shutoff is necessary, shut off the gas leaks.
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Page 20: Electrical
Left Side Piping Right Side Piping (Standard) (Alternate) AUTOMATIC AUTOMATIC GAS VALVE MANUAL GAS VALVE MANUAL (with manual MAIN SHUT-OFF (with manual MAIN SHUT-OFF VALVE shut-off valve) shut-off valve) VALVE GROUND JOINT UNION GROUND JOINT UNION DRIP LEG DRIP LEG FIELD PROVIDED AND INSTALLED... - Page 21 Accessory Terminals One line voltage “EAC” 1/4” spade terminal is provided on the furnace integrated control. See Figure 24 for integrated control configuration. This terminal is energized when the indoor blower is operating. Any accessory rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral terminals.
- Page 22 Figure 22. Wiring Diagram - 040 Models Page 22 of 32 Issue 1907 507651-01...
- Page 23 Figure 23. Wiring Diagram - 060, 080, 100 Models 507651-01 Issue 1907 Page 23 of 32...
- Page 24 Red LED Flash Code Diagnostic Codes / Status of Furnace No power to control or board fault detected Heartbeat Control powered - displayed during all modes of operation if no errors are detected Continuous Rapid Flash Call For Heat / Burner Operation 1 flash Reverse line voltage polarity 2 flashes...
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Page 25: Unit Start-Up
Gas Valve Operation Unit Start-Up See Figure 25 STOP! Read the safety information at the beginning FOR YOUR SAFETY, READ BEFORE LIGHTING UNIT. of this section. Set the thermostat to the lowest setting. WARNING Turn off all electrical power to the unit. Do not use this furnace if any part has been underwater. -
Page 26: Heating Sequence Of Operation
Failure to Operate If flame is not detected after first ignition trial, the ignition control will repeat steps 3 and 4 four more times If the unit fails to operate, check the following: before locking out the gas valve (“WATCHGUARD” Is the thermostat calling for heat? flame failure mode). - Page 27 Supply Pressure Measurement A threaded plug on the inlet side of the gas valve provides IMPORTANT access to the supply pressure tap. Remove the threaded plug, install a field provided barbed fitting and connect For safety, connect a shut-off valve between the a manometer to measure supply pressure.
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Page 28: Other Unit Adjustments
Other Unit Adjustments HEAT FAN OFF TIME IN SECONDS Primary Limit The primary limit is located on the heating compartment vestibule panel. The secondary limits (if equipped) are NO JUMPER located in the blower compartment, attached to the back To adjust fan-off timing, reposition jumper across pins to side of the blower. -
Page 29: Blower Performance
Blower Performance A80UH1EX / 80G1UHEX 040A*12 Performance (less filter) Air Volume / Watts at Various Blower Speeds External Static High Medium-High Medium Medium-Low Pressure Watts Watts Watts Watts Watts in. w.c. 0.00 1430 1200 1025 0.10 1395 1165 1005 0.20 1370 1130 0.30... - Page 30 Page 30 of 32 Issue 1907 507651-01...
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Page 31: Service
At the beginning of each heating season, and to comply and clean flame sensor. Check microamps before and with the Allied Air Limited Warranty, your system should after. Check controls and safety devices (gas valve, be checked by a licensed professional technician (or flame sensor, temperature limits). -
Page 32: Repair Parts List
Repair Parts List The following repair parts are available through independent Allied Air dealers. When ordering parts, include the complete furnace model number listed on the CSA International nameplate. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.
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