Allied A80UH2V 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.

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

Parts Arrangement...................................................................3

A80UH2V & 80G2UH-V Gas Furnace .....................................4

Shipping and Packing List .......................................................4

Safety Information ...................................................................4

Use of Furnace as a Construction Heater ...............................5

General ....................................................................................6

Combustion, Dilution & Ventilation Air .....................................6

Setting Equipment ...................................................................9

Filters .....................................................................................12

Duct System ..........................................................................12

Venting...................................................................................13

*P507335-01*

(P)

507335-01

INSTALLATION INSTRUCTIONS

A80UH2V & 80G2UH-V

Warm Air Gas Furnace

This manual must be left with the homeowner for future reference.

CAUTION

507335-01

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 .............................................................................23

Electrical ................................................................................25

Start-Up .................................................................................30

Gas Pressure Adjustment ......................................................31

High Altitude ..........................................................................32

Sequence of Operation .........................................................33

Maintenance ..........................................................................36

Control Diagnostics ...............................................................39

Planned Service ....................................................................40

Repair Parts List ....................................................................40

Wiring Diagram ......................................................................41

Start-Up & Performance Check List ......................................43

Issue 1624

WARNING

Manufactured By

Allied Air Enterprises, Inc.

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

Page 1 of 44

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Summary of Contents for Allied A80UH2V

Page 1: Table Of Contents
Table of Contents Unit Dimensions ..............2 Gas Piping ................23 Parts Arrangement..............3 Electrical ................25 A80UH2V & 80G2UH-V Gas Furnace ........4 Start-Up .................30 Shipping and Packing List ............4 Gas Pressure Adjustment ............31 Safety Information ..............4 High Altitude ................32 Use of Furnace as a Construction Heater .......5...
Page 2: Unit Dimensions
A80UH2V & 80G2UH-V Unit Dimensions - inches (mm) 1. NOTE - 20C and 20D size units installed in upflow applications that require air volumes of 1800 cfm (850 L/s) or greater must have one of the following: 1. Single side return air with transition to accommodate 20 x 25 x 1in.
Page 3: Parts Arrangement
EXPANDED VIEW HEAT EXCHANGER COMBUSTION AIR INDUCER COMBUSTION AIR INDUCER PRESSURE SWITCH ROLLOUT LOCATED INSIDE BURNER BOX GAS VALVE CABINET BURNER BOX CONTROL BOX (INCLUDES INTEGRATED CONTROL, AND TRANSFORMER) BURNER ACCESS PANEL BLOWER BLOWER ASSEMBLY ACCESS PANEL Figure 1 507335-01 Issue 1624 Page 3 of 44...
Page 4: A80Uh2V & 80G2Uh-V Gas Furnace
A80UH2V & 80G2UH-V Gas Furnace The A80UH2V & 80G2UH-V gas furnace is shipped ready for CAUTION installation in the upflow or horizontal position (left or right). The furnace is shipped with the bottom panel in place. The As with any mechanical equipment, personal injury can bottom panel must be removed if the unit is to be installed result from contact with sharp sheet metal edges.
Page 5: Use Of Furnace As A Construction Heater
Use of Furnace as a Construction Heater This furnace must be installed so that its electrical Allied Air does not recommend the use of these units as a components are protected from water. construction heater during any phase of construction. Very...
Page 6: General
Cements and glues supervisor. Antistatic fabric softeners for clothes dryers Masonry acid washing materials Allied Air Enterprises, Inc. 215 Metropolitan Drive West Columbia, SC 29170 Page 6 of 44 Issue 1624 507335-01...
Page 7 All gas fired appliances require air for the combustion Equipment in Confined Space - All Air From Inside process. If sufficient combustion air is not available, the furnace or other appliances will operate inefficiently and unsafely. Enough air must be provided to meet the needs of all fuel burning appliances and appliances such as exhaust fans which force air out of the house.
Page 8 When ducts are used, they shall be of the same cross EQUIPMENT IN CONFINED SPACE sectional area as the free area of the openings to which they (ALL AIR FROM OUTSIDE) 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.
Page 9: Setting Equipment
Setting Equipment Upflow Applications Allow for clearances to combustible materials as indicated WARNING on the unit nameplate. Minimum clearances for closet or alcove installations are shown in Figure 8. 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 10 Return Air - Upflow Applications Return air can be brought in through the bottom or either Single Side Return Air side of the furnace installed in an upflow application. If the (with transition and filter) 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 11 The furnace can be installed in horizontal applications. Remove the two screws that secure the bottom cap to the Order horizontal suspension kit (51W10) from Allied Air, or furnace. Pivot the bottom cap down to release the bottom use equivalent suspension method.
Page 12: Filters
Horizontal Application Unit installed on Platform Table 1 Duct System Use industry approved standards (such as those published by Air Conditioning Contractors of America or American Society of Heating, Refrigerating and Air Conditioning Engineers) to size and install the supply and return air duct system.
Page 13: Venting
Venting If necessary reposition the combustion air inducer, pressure A 4 inch diameter flue transition is factory installed on the switch and/or make-up box as needed per the following combustion air inducer outlet of all models. Figure 16 steps. See Figures 16 through 22. shows the combustion air inducer as shipped from 1.
Page 14 Horizontal Position HORIZONTAL LEFT POSITION HORIZONTAL RIGHT POSITION Top Vent discharge Top Vent Discharge • Disconnect pressure switch hose from barbed fitting on the pressure • Remove make-up box assembly (2 screws) and cut wire tie to free make- switch assembly. Remove pressure switch assembly (1 screw) and up box wires.
Page 15 These series units are classified as fan assisted Category Use self drilling sheet metal screws or a mechanical fastener I furnaces when vertically vented according to the latest to firmly secure the vent pipe to the round collar of the flue edition of National Fuel Gas Code (NFPA 54 / ANSI Z223.1) transition.
Page 16 Common Venting Using Tile Lined Interior Masonry Chimney and Combined Vent Connector 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. Figure 25 DO NOT insulate the space between the liner and the Do not install a manual damper, barometric draft regulator, chimney wall with puffed mica or any other loose granular...
Page 17 6. The entire length of single wall metal vent connector 13. When the vent connector used for Category I appliances shall be readily accessible for inspection, cleaning, and must be located in or pass through a crawl space, attic or replacement.
Page 18 Capacity of Type B Double Wall Vents with Type B Double Wall Connectors Serving a Single Category I Appliance NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90 °...
Page 19 Capacity of Type B Double Wall Vents with Single Wall Metal Connectors Serving a Single Category I Appliance NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90 °...
Page 20 Vent Connector Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Table 5 Common Vent Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Table 6 Page 20 of 44 Issue 1624...
Page 21 Vent Connector Capacity Type B Double Wall Vents with Single Wall Metal Connectors Serving Two or More Category I Appliances NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90 °...
Page 22 Removal of the Furnace from Common Vent 3. Close all building doors and windows and all doors In the event that an existing furnace is removed from a between the space in which the appliances remaining venting system commonly run with separate gas appliances, connected to the common venting system are located the venting system is likely to be too large to properly vent and other spaces of the building.
Page 23: Gas Piping
Gas Piping 4. The piping should be sloped 1/4 inch (6.4 mm) per 15 feet (4.57 m) upward toward the meter from the furnace. The piping must be supported at proper intervals [every CAUTION 8 to 10 feet (2.44 to 3.01 m)] with suitable hangers or straps.
Page 24 NOTE: BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 26 Horizontal Applications Possible Gas Piping Configurations NOTE: BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 27 Page 24 of 44 Issue 1624 507335-01...
Page 25: Electrical
Leak Check The unit is equipped with a field make-up box on the left After gas piping is completed, carefully check all piping hand side of the cabinet. The make-up box may be moved connections (factory and field installed) for gas leaks. Use to the right side of the furnace to facilitate installation.
Page 26 Indoor Blower Speeds 1. When the thermostat is set to “FAN ON,” the indoor blower will run continuously at approximately 50% of the second stage cooling speed when there is no cooling or heating demand. 2. When this unit is running in the heating mode, the indoor Table 10 blower will run on the heating speed designated by the positions of DIP switches 1 (A,B,C,D) of the HEAT...
Page 27 If continuous blower operation has been selected, the (A80UH2V or 80G2UH-V). To activate this option, move the variable speed motor will slowly ramp down until it reaches jumper pin (see Figure 31) to desired setting (5 minutes or the airflow for that mode.
Page 28 Continuous Blower Operation Active Dehumidification The comfort level of the living space can be enhanced when To achieve additional dehumidification, clip the jumper using this feature by allowing continuous circulation of air wire located below the DEHUM terminal on the integrated between calls for cooling or heating.
Page 29 ADJUSTING AIRFLOW Table 11 507335-01 Issue 1624 Page 29 of 44...
Page 30: Start-Up
Start-Up WARNING For Your Safety, Read Before Operating If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. WARNING Do not use this furnace if any part has been under Gas Valve Operation (Figures 33 and 34) water.
Page 31: Gas Pressure Adjustment
Supply Line Pressure 12. If the appliance will not operate, follow the instructions “Turning Off Gas to Unit” and call your service technician A threaded plug on the inlet side of the gas valve provides or gas supplier. access to the supply pressure tap. Turning Off Gas to Unit Honeywell Valve: 1.
Page 32: High Altitude
OPERATION High Altitude The manifold pressure, gas orifice and pressure switch WARNING may require adjustment or replacement to ensure proper For safety, shut unit OFF and remove manometer as operation at higher altitudes. See Table 14 for manifold soon as an accurate reading has been obtained. Take pressures and Table 15 for pressure switch and gas care to replace pressure tap plug.
Page 33: Sequence Of Operation
Primary and Secondary Limits Sequence of Operation See figures 33 – 37. The primary limit is located on the heating compartment vestibule panel. The secondary limits (if equipped) are Heating located in the blower compartment, attached to the back On a call for heat from the room thermostat, the control board side of the blower.
Page 34 Fan On Heat Pump When the thermostat is set for continuous fan operation For heat pump operation, clip the jumper wire located below and there is no demand for heating or cooling, a call for the O terminal on the integrated ignition/blower control board. fan closes In heat pump mode, a call for heat will result in the circulating the R to G circuit and the circulating blower motor runs at...
Page 35 1st Stage - 2nd Stage (W1/W2) Heat Call Figure 33 Single Stage Cooling High Heat (W2) Call Figure 36 Two Stage Cooling Figure 34 Call for Fan * Percentage of High Stage Cooling Figure 35 * Percentage of High Stage Cooling Figure 37 507335-01 Issue 1624...
Page 36: Maintenance
Maintenance Electrical 1. Check all wiring for loose connections. 2. Check for the correct voltage at the furnace (furnace WARNING operating). Correct voltage is 120VAC ± 10%. 3. Check amp draw on the blower motor with inner blower ELECTRICAL SHOCK, FIRE, panel in place.
Page 37 Burner, Combustion Air Inducer Assembly and Heat Exchanger Removal Figure 38 507335-01 Issue 1624 Page 37 of 44...
Page 38 9. Remove screws from both sides, top and bottom of vestibule panel. Remove 5 Screws if Necessary 10. Remove heat exchanger. It may be necessary to (either side of cabinet) spread cabinet side to allow more room. If so, remove five screws from the left side or right side of cabinet.
Page 39: Control Diagnostics
5 seconds High Heat State - Green LED before releasing. High Heat State LED On A80UH2V and 80G2UH-V models, a green LED is provided on the control board to indicate high heat state (see Table 17). CFM LED...
Page 40: Planned Service
Planned Service The following items should be checked during an annual inspection. Power to the unit must be shut off for the service technician’s safety. Operating performance - Unit must be observed during Fresh air grilles and louvers (on the unit and in the room operation to monitor proper performance of the unit and the where the furnace is installed) - Must be open and unob- vent system.
Page 41: Wiring Diagram
Wiring Diagram Figure 41 507335-01 Issue 1624 Page 41 of 44...
Page 42 Typical Field Wiring Diagram Figure 42 Page 42 of 44 Issue 1624 507335-01...
Page 43: Start-Up & Performance Check List
Start-Up & Performance Check List UNIT SET UP 507335-01 Issue 1624 Page 43 of 44...
Page 44: Issue
UNIT OPERATION Page 44 of 44 Issue 1624 507335-01...

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Allied A80UH2V Installation Instructions Manual

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