Table of Contents
Advertisement
Quick Links
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
A80UH2V & 80G1UH2V Parts Arrangement ................ 3
A80UH2V & 80G1UH2V 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
*506471-01*
506471-01
INSTALLATION INSTRUCTIONS
A80UH2V & 80G1UH2V
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 .................................................................. 23
Electrical ..................................................................... 25
Thermostat .................................................................. 27
Unit Start-Up ............................................................... 30
Heating Sequence of Operation ................................. 31
Gas Pressure Adjustment ........................................... 33
High Altitude ................................................................ 34
Other Unit Adjustments ............................................... 34
Maintenance ............................................................... 33
Repair Parts List ......................................................... 37
Wiring Diagram ........................................................... 38
A Lennox International, Inc. Company
Issue 1034
WARNING
Manufactured By
Allied Air Enterprises, Inc.
215 Metropolitan Drive
West Columbia, SC 29170
Page 1 of 41
Advertisement
Table of Contents
Related Manuals for Allied Air 80G1UH2V
Summary of Contents for Allied Air 80G1UH2V
-
Page 1: Table Of Contents
Be careful when you handle this equipment. Unit Dimensions ... 2 A80UH2V & 80G1UH2V Parts Arrangement ... 3 A80UH2V & 80G1UH2V Gas Furnace ... 4 Shipping and Packing List ... 4 Safety Information ... 4 Use of Furnace as a Construction Heater ... -
Page 2: Unit Dimensions
A80UH2V & 80G1UH2V Unit Dimensions - inches (mm) 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. Return air from single side transition will accommodate 20 x 25 x 1 in. -
Page 3: A80Uh2V & 80G1Uh2V Parts Arrangement
EXPLODED VIEW HEAT EXCHANGER COMBUSTION AIR INDUCER COMBUSTION AIR INDUCER PRESSURE SWITCH GAS VALVE ROLLOUT SWITCH BURNER BOX CABINET CONTROL BOX ACCESS PANEL BLOWER ASSEMBLY Figure 1 506471-01 Issue 1034 Page 3 of 41... -
Page 4: A80Uh2V & 80G1Uh2V Gas Furnace
A80UH2V & 80G1UH2V Gas Furnace The A80UH2V & 80G1UH2V gas furnace is shipped with ready for installation in the upflow or horizontal position (left or right). for horizontal left position the combustion air pressure switch must be moved). The furnace is shipped with the bottom panel in place. -
Page 5: Use Of Furnace As A Construction Heater
Temperature Rise NOTE: Furnace must be adjusted to obtain a temperature rise within the range specified on the unit nameplate. Failure to do so may cause erratic limit operation and may result in premature heat exchanger failure. This furnace must be installed so that its electrical components are protected from water. -
Page 6: General
To reduce exposure to this substance or for further information, consult material safety data sheets available from address shown below, or contact your supervisor. Allied Air Enterprises, Inc. 215 Metropolitan Drive West Columbia, SC 29170 Page 6 of 41 Combustion, Dilution &... - Page 7 All gas fired appliances require air for the combustion 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 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.
-
Page 9: Setting Equipment
Setting Equipment 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. Doing so will adversely affect the operation of the safety control devices, which could result in personal injury or death. - Page 10 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 11 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 panel has been removed, reinstall the bottom cap. See Figure 11. Removing the Bottom Panel Figure 11 Horizontal Application...
-
Page 12: Filters
Horizontal Application Unit installed on Platform Figure 14 WARNING 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 the living space. Use screws and joint tape to seal the return air system to the furnace. -
Page 13: Venting
Venting A 4 inch diameter flue transition is factory installed on the combustion air inducer outlet of all models. Figure 16 shows the combustion air inducer as shipped from the factory. Mounting Screws Location Figure 15 UPFLOW POSITION Top Vent Discharge Figure 16 IMPORTANT The unit will not vent properly with the flue transition... - Page 14 HORIZONTAL LEFT POSITION Top Vent discharge • Disconnect pressure switch hose from barbed fitting on the pressure switch assembly. Remove pressure switch assembly (1 screw) and cut wire tie to free pressure switch wires. Reinstall pressure switch on the other side of orifice plate and reconnect pressure switch hose. •...
- Page 15 These series units are classified as fan assisted Category I furnaces when vertically vented according to the latest edition of National Fuel Gas Code (NFPA 54 / ANSI Z223.1) in the USA. A fan assisted Category I furnace is an appliance equipped with an integral mechanical means to either draw or force combustion products through the combustion chamber and/or heat exchanger.
- Page 16 Common Venting Using Tile Lined Interior Masonry Chimney and Combined Vent Connector NOTE: Refer to provided venting tables for installations. DO NOT insulate the space between the liner and the chimney wall with puffed mica or any other loose granular insulating material.
- Page 17 6. The entire length of single wall metal vent connector shall be readily accessible for inspection, cleaning, and replacement. 7. Single appliance venting configurations with zero lateral lengths (Tables 3 and 4) 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 18 Capacity of Type B Double Wall Vents with Type B Double Wall Connectors Serving a Single Category I Appliance NOTE: Single appliance venting configureations 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 configureations 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 Type B Double Wall Vents with Type B Double Wall Connectors Type B Double Wall Vents with Type B Double Wall Connectors Page 20 of 41 Vent Connector Capacity Serving Two or More Category I Appliances Table 5 Common Vent Capacity Serving Two or More Category I Appliances Table 6 Issue 1034...
- Page 21 Type B Double Wall Vents with Single Wall Metal Connectors NOTE: Single appliance venting configureations 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 ° elbows. For each additional 90° elbow or equivalent (for example two 45° elbows equal one 90°...
- Page 22 Removal of the Furnace from Common Vent 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 and the other appliances (which are not operating) remain connected to the common venting system.
-
Page 23: Gas Piping
Gas Piping CAUTION If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall be installed at the gas valve and extend outside the furnace cabinet. The flexible connector can then be added between the black iron pipe and the gas supply line. - 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 41 Issue 1034 506471-01...
-
Page 25: Electrical
Leak Check After gas piping is completed, carefully check all piping connections (factory and field installed) for gas leaks. Use a leak detecting solution or other preferred means. NOTE: If emergency shutoff is necessary, shut off the main manual gas valve and disconnect the main power to the furnace. - Page 26 Table 10 4. 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. 5. Complete the wiring connections to the equipment. Use the provided unit wiring diagram and the field wiring diagram shown in Figure 41.
-
Page 27: Thermostat
The automatic heat staging option allows a single stage thermostat to be used with two stage furnace models (A80UH2V or 80G1UH2V). To activate this option, move the jumper pin (see Figure 31) to desired setting (5 minutes or 10 minutes). The furnace will start on 1st stage heat and stay at 1st stage heat for the duration of the selected time before switching to 2nd stage heat. - Page 28 Active Dehumidification To achieve additional dehumidification, clip the jumper wire located below the DEHUM terminal on the integrated ignition/ blower control board and connect a humidity control that opens on humidity rise to the DEHUM and R terminals. The DEHUM terminal on the control board must be connected to the normally closed contact of the humidity control so that the board senses an open circuit on high humidity.
- Page 29 ADJUSTING AIRFLOW Table 11 506471-01 Issue 1034 Page 29 of 41...
-
Page 30: Unit Start-Up
START-UP Lighting Instructions For Your Safety, Read Before Operating WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. These furnaces are equipped with an ignition device which automatically lights the burners. -
Page 31: Heating Sequence Of Operation
OPERATION Sequence of Operation (see Figures 33 – 37) Heating On a call for heat from the room thermostat, the control board performs a 1 second self check. Upon confirmation that the pressure switch contacts are in an open position, the control energizes the combustion blower on high speed. - Page 32 75%* 50%* CALL * Percentage of Low Fire CFM High Heat (W2) Call 100* W2 - High Heat Demand Present CALL - High Heat Demand Satisfied * Percentage of High Fire CFM Figure 34 Call for Fan G - Fan Switch ON - Fan Switch OFF CALL Figure 35...
-
Page 33: Gas Pressure Adjustment
Controls Following is a description of the operation of some of the controls used in this furnace. All models use one of each control, except as noted. Pressure Switch The pressure switch is a normally open switch that monitors combustion air flow. Inadequate air flow resulting from excessive venting system restriction or a failed combustion blower will cause the switch to remain open. -
Page 34: High Altitude
For Natural Gas: Check the furnace rate by observing the gas meter, when available, making sure all other gas appliances are turned off. The test hand on the meter should be timed for at least one revolution. Note the number of seconds for one revolution. -
Page 35: Maintenance
MAINTENANCE WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in dangerous operation, serious injury, death, or property damage. Improper servicing could result in dangerous operation, serious injury, death, or property damage. • Before servicing, disconnect all electrical power to furnace. - Page 36 5 seconds before releasing. High Heat State LED On A80UH2V and 80G1UH2V models, a green LED is provided on the control board to indicate high heat state (see Table 14). CFM LED...
-
Page 37: Repair Parts List
REPAIR PARTS The following repair parts are available from the local distributor. When ordering parts, include the complete furnace model number and serial number which are printed on the rating plate located on the furnace. Control Group Transformer High limit control Auxiliary limit Gas valve Integrated ignition/blower control board... -
Page 38: Wiring Diagram
INDUCED DRAFT PRESSURE BLOWER SWITCH (HIGH) MAIN LIMIT 5-PIN CONNECTOR GREEN LED RED LED W1W2 FAULT CODE HISTORY THERMOSTAT BUTTON (SEE NOTE 1) NOTES: 1. PRESS AND RELEASE FAULT CODE HISTORY BUTTON TO DISPLAY FAULT CODES. TO ERASE CODES, PRESS AND HOLD BUTTON IN FOR MORE THAN 5 SECONDS 2. - Page 39 Typical Field Wiring Diagram Figure 41 506471-01 Issue 1034 Page 39 of 41...
- Page 40 START-UP & PERFORMANCE CHECK LIST UNIT SET UP Page 40 of 41 Issue 1034 506471-01...
- Page 41 UNIT OPERATION 506471-01 Issue 1034 Page 41 of 41...