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506471-01

Page 1 of 41

Issue 1034

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.

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.

WARNING

Manufactured By

Allied Air Enterprises, Inc.

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

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

INSTALLATION INSTRUCTIONS

A80UH2V & 80G1UH2V

Warm Air Gas Furnace

Upflow / Horizontal Left and Right Air Discharge

TABLE OF CONTENTS

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

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

*506471-01*

As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.

CAUTION

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Содержание 80G1UH2V

Страница 1: ...omeowner for future reference INSTALLATION INSTRUCTIONS A80UH2V 80G1UH2V Warm Air Gas Furnace Upflow Horizontal Left and Right Air Discharge TABLE OF CONTENTS 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 Equipmen...

Страница 2: ... 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 508 x 635 x 25 mm cleanable air filter Required to maintain proper air velocity 2 Single side return air with optional RAB Return Air Base 3 Return Air from bottom and one side 4 Return air from both sides 5 Return air from bottom 2 Flue outlet may be horizontal but furnace must ...

Страница 3: ...1 Page 3 of 41 Issue 1034 EXPLODED VIEW CONTROL BOX BLOWER ASSEMBLY ACCESS PANEL BURNER BOX ROLLOUT SWITCH GAS VALVE COMBUSTION AIR INDUCER PRESSURE SWITCH COMBUSTION AIR INDUCER HEAT EXCHANGER CABINET Figure 1 ...

Страница 4: ... must conform with local building codes In the absence of local codes units must be installed according to the current National Fuel Gas Code ANSI Z223 1 The National Fuel Gas Code is available from the following address American National Standards Institute Inc 11 West 42nd Street New York NY 10036 Clearances Adequate clearance must be made around the air openings into the vestibule area In order...

Страница 5: ...st control the furnace The use of fixed jumpers that will provide continuous heating is not allowed The return air duct must be provided and sealed to the furnace Return air temperature range between 60 F 16 C and 80 F 27 C must be maintained Air filters must be installed in the system and must be maintained during construction Air filters must be replaced upon construction completion The input ra...

Страница 6: ...t pipe or chimney As a result combustion gases enter the living space creating a potentially dangerous situation In the absence of local codes concerning air for combustion and ventilation use the guidelines and procedures in this section to install these furnaces to ensure efficient and safe operation You must consider combustion air needs and requirements for exhaust vents and gas piping A porti...

Страница 7: ...aining the furnace the return air must be handled by ducts which are sealed to the furnace casing and which terminate outside the space containing the furnace This is especially important when the furnace is mounted on a platform in a confined space such as a closet or small equipment room Even a small leak around the base of the unit at the platform or at the return air duct connection can cause ...

Страница 8: ... area of at least one square inch per 2 000 Btu 645 mm per 59 kW per hour of the total input rating of all equipment in the enclosure If the equipment room is located against an outside wall and the air openings communicate directly with the outdoors each opening shall have a free area of at least 1 square inch per 4 000 Btu 645 mm per 1 17 kW per hour of the total input rating of all other equipm...

Страница 9: ...washer have been removed the rigid leg will not touch the blower housing 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 Upflow Applications Allow for clearances to combustible material...

Страница 10: ... velocity See Figure 9 2 Single side return air with optional return airbase See Figure 10 3 Bottom return air 4 Return air from both sides 5 Bottom and one side return air Figure 9 Single Side Return Air with transition and filter Optional Return Air Base Upflow Applications Only For use with A B C and D cabinets NOTE Optional Side Return Air Filter Kits are not for use with Return Air Base 1 Bot...

Страница 11: ...r 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 interfere with the plenum or exhaust piping installation Cooling coils and supply and return air plenums must be supported separately NOTE When the furnace is installed on a platform in a crawlspace it must be elevated enough to avoid water damage and to allow the ev...

Страница 12: ...own the vent pipe and into the room This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide gas This toxic gas might then be distributed throughout the house by the furnace duct system In upflow applications the return air can be brought in through the bottom or either side of the furnace If a furnace with bottom return air is installed on a platf...

Страница 13: ...ressure switch assembly to the orifice plate Lift the assembly and rotate it 90 clockwise or counter clockwise to either the 3 o clock position or 9 o clock position Resecure with four secrews Gasket should be left in place 2 Use tin snips to cut preferred opening on the cabinet for repositioning the flue outlet Use the cut out piece as a cover plate to patch unused opening on cabinet Figure 17 Re...

Страница 14: ...ssembly 2 screws and cut wire tie to free make up box wires Reinstall make up box on other side of cabinet Resecure make up box wires Either pull excess wires through the blower compartment and secure using supplied wire tie or coil excess wire and secure to the gas manifold HORIZONTAL RIGHT POSITION Side Vent Discharge Figure 22 HORIZONTAL LEFT POSITION Side Vent Discharge Figure 20 Disconnect pr...

Страница 15: ...ING Use self drilling sheet metal screws or a mechanical fastener to firmly secure the vent pipe to the round collar of the flue transition If self drilling screws are used to attach the vent pipe it is recommended that three be used Drive one self drilling screw through the front and one through each side of the vent pipe and collar See Figure 23 Install the first vent connector elbow at a minimu...

Страница 16: ...ney Never connect a Category I appliance to a chimney that is servicing a solid fuel appliance If a fireplace chimney flue is used to vent this appliance the fireplace opening must be permanently sealed Atype B or listed chimney lining system that passes through an unused masonry chimney flue is not considered to be exposed to the outdoors General Venting Requirements Vent these furnaces according...

Страница 17: ...ints between sections of single wall connector piping shall be fastened by screws or other approved means 13 When the vent connector used for Category I appliances must be located in or pass through a crawl space attic or other areas which may be cold that portion of the vent connector shall be constructed of listed doublewall type B vent material or material having equivalent insulation qualities...

Страница 18: ...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 elbow beyond two the maximum capacity listed in the venting table should be reduced by 10 percent 0 90 x maximum listed capacity ...

Страница 19: ...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 elbow beyond two the maximum capacity listed in the venting table should be reduced by 10 percent 0 90 x maximum listed capacity ...

Страница 20: ... Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Common Vent Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Table 5 Table 6 ...

Страница 21: ... Two or more Category I Appliances Table 8 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 elbow beyond two the maximum capacity listed in the venting table shoul...

Страница 22: ...m are located and other spaces of the building Turn on clothes dryers and any appliances not connected to the common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers 4 Follow the lighting instructions Turn on the appliance that is being inspected Adjust the thermostat ...

Страница 23: ...e The piping must be supported at proper intervals every 8 to 10 feet 2 44 to 3 01 m with suitable hangers or straps Install a drip leg in vertical pipe runs to the unit 5 A 1 8 N P T plugged tap or pressure post is located on the gas valve to facilitate test gauge connection See Figure 38 6 In some localities codes may require the installation of a manual main shut off valve and union furnished b...

Страница 24: ...e 24 of 41 Issue 1034 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 ...

Страница 25: ...e to protect the furnace s electronic controls Precautions will help to avoid control exposure to electrostatic discharge by putting the furnace the control and the technician at the same electrostatic potential Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface such as the gas valve or blower deck before performing any service procedure CAUTION The unit is...

Страница 26: ...ated up to 0 5 amp can be connected to this terminal with the ground leg of the circuit being connected to either ground or the C terminal See Figure 41 for control configuration 10 Install the room thermostat according to the instructions provided with the thermostat If the furnace is being matched with a heat pump refer to the instruction packaged with the dual fuel thermostat Indoor Blower Spee...

Страница 27: ... 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 W1 on the control board must be connected to W1 on the thermostat Humidifier Terminals are provided on the integrated ignition blower control board for connection to a 120 volt humidifier The HUM terminal is energized whenever the thermostat calls...

Страница 28: ...et to run at the middle of the heating rise range as shown on the unit rating plate If higher or lower rise is desired change the airflow 15 up or down by movingtheADJUSTjumperplug seeFigure32 fromtheNORM positiontothe or position Thisadjustmentwillalsocause the cooling airflow to be raised or lowered by 15 The TEST position on the ADJUST tap is not used The jumper plug on the HEAT tap should rema...

Страница 29: ...506471 01 Page 29 of 41 Issue 1034 ADJUSTING AIRFLOW Table 11 ...

Страница 30: ...Set the room thermostat to lowest setting 2 Remove burner access door 3 Move the gas control knob to the ON position Use only your hand to turn the gas control knob Never use tools If the knob will not turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion 4 Replace the burner access door 5 Turn on the electrical power to...

Страница 31: ...heatspeed Thecirculatingblower remains energized until the limits are closed Fan On When the thermostat is set for continuous fan operation and there is no demand for heating or cooling a call for fan closes OPERATION the R to G circuit and the circulating blower motor runs at 50 of the selected cooling CFM until switched off When the call for fan is turned off the control de energizes the circula...

Страница 32: ... Stage Cool st y1 Y2 2 Stage Cool Demand Present nd 2 Demand Satisfied nd Stage Cool y2 1 min 70 Y1 y2 Y1 Y2 y1 57 1 min 57 Figure 33 1st Stage 2nd Stage W1 W2 Heat Call W1 100 CALL W2 High Heat Demand Present High Heat Demand Satisfied w2 50 75 Percentage of High Fire CFM 1 min W1 Heat Demand Present Heat Demand Satisfied w1 Percentage of Low Fire CFM 100 82 2 min OFF W1 W2 w1 w2 82 2 min w1 1 mi...

Страница 33: ...missible gas supply pressure for the purpose of input adjustment is 5 w c for natural gas or 11 w c for propane gas This furnace requires conversion for use with propane see Accessories section on page 26 for correct kit The maximum inlet gas supply pressure is 10 5 w c for natural gas and 13 w c for propane Gas input must never exceed the value shown on the furnace rating plate These units are eq...

Страница 34: ...eet fill in the appropiate information on the furnace label that has the words This furnace was converted on Emergency Replacement Motor Operation If the variable speed motor needs to be replaced in an emergency situation such as no heat and an exact replacement motor is not immediately available a standard PSC motor of equivalent frame size voltage rotation and horsepower can be temporarily insta...

Страница 35: ...atural gas burner flame or long yellow tips on propane may be caused by lint accumulation or dirt inside the burner or burner ports at the air inlet between the burner and manifold pipe or obstructions over the burner orifice Use a soft brush or vacuum to clean the affected areas MAINTENANCE Failure to follow the safety warnings exactly could result in dangerous operation serious injury death or p...

Страница 36: ...est fault code is flashed last To clear the fault code history press and hold the pushbutton switch in for more than 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 On A80UH2V and 80G1UH2V models equipped with a variable speed motor an amber LED is provided on the control boa...

Страница 37: ...me rollout protector switch Hot surface igniter Input choke 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 Heat Exchanger Group Heat exchanger Blower Group Blower housing assembly Blower wheel Blower mount Blower motor Blower...

Страница 38: ...TORY LOW VOLTAGE FIELD PRESSURE SWITCH LOW PRESSURE SWITCH DRAIN IF USED ROLLOUT SWITCH IF USED ROLLOUT SWITCH NONE 10 5 P5 AUX LIMIT SWITCH IF USED WHT BLK SW1 GREEN LED RED LED AMBER LED FAULT CODE HISTORY BUTTON SEE NOTE 1 AUTOMATIC HEAT STAGING JUMPER 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 IF ...

Страница 39: ...506471 01 Page 39 of 41 Issue 1034 Typical Field Wiring Diagram Figure 41 ...

Страница 40: ...506471 01 Page 40 of 41 Issue 1034 START UP PERFORMANCE CHECK LIST UNIT SET UP ...

Страница 41: ...506471 01 Page 41 of 41 Issue 1034 UNIT OPERATION ...

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