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506526-01

Page 5 of 39

Issue 1031

Temperature Rise

NOTE:

  

Furnace must be adjusted to obtain 

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.

Installed in Combination with a Cooling Coil

When this furnace is used with cooling units, it shall be

installed in parallel with, or on the upstream side of, cooling

units to avoid condensation in the heating compartment. See

Figure 2.  With a parallel flow arrangement, a damper (or

other means to control the flow of air) must adequately

pre-vent chilled air from entering the furnace.  If the damper

is manually operated, it must be equipped to prevent

operation of either the heating or the cooling unit, unless it
is in the full 

HEAT or COOL 

setting.  See Figure 2.

Figure 2

Heating Unit Installed Parallel to Air Handler Unit

Heating Unit Installed Upstream of Cooling Unit

This furnace may be installed in alcoves, closets, attics,

basements, garages, and utility rooms in the upflow or

horizontal position.

This furnace design has not been CSA certified for

installation in mobile homes, recreational vehicles, or

outdoors.

Use of Furnace as a Construction Heater

Allied Air does not recommended the use of these units as

a construction heater during any phase of construction.  Very

low return air temperature, harmful vapors and operation of

the unit with clogged or misplaced filters will damage the

unit.

Units may be used for heating of buildings or structures

under construction, if the following conditions are met:

The vent system must be permanently installed per these

installation instructions.

A room thermostat must 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 rate and temperature rise must be set per the

furnace rating plate.

One hundred percent (100%) outdoor air must be

provided for combustion air requirements during

construc-tion. Temporary ducting may supply outdoor

air to the furnace. Do not connect duct directly to the

furnace. Size the temporary duct following these

instructions in section for Combustion, Dilution and

Ventilation Air in a confined space with air from outside.

The furnace heat exchanger, components, duct system,

air filters and evaporator coils must be thoroughly

cleaned following final construction clean-up.

All furnace operating conditions (including ignition, input

rate, temperature rise and venting) must be verified
according to these installation instructions.

When installed, this furnace must be electrically grounded

according to local codes. In addition, in the United States,

installation must conform with the current National Electric

Code, ANSI/NFPA No. 70.  The National Electric Code (ANSI/

NFPA No. 70) is available from the following address:

National Fire Protection Association

1 Battery March Park

Quincy, MA 02269

NOTE:

 

  

This furnace is designed for 

minimum continuous

return air temperature 

of 

60° F (16°C) or an intermittent

operation down to 55° F (13°C) dry bulb for cases where 

a

night setback thermostat is used.  Return air temperature

must not exceed 85° F (29°C) dry bulb.

Summary of Contents for 80G1UH

Page 1: ...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 INSTRUCTION...

Page 2: ...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 1 in 508 x 635 x 25 mm air filter 2 Single side...

Page 3: ...506526 01 Page 3 of 39 Issue 1031 A80UH 80G1UH Expanded View Figure 1...

Page 4: ...supplier WARNING Certifications These units are CSA International certified to ANSI Z21 47 In the USA installation of gas furnaces must conform with local building codes In the absence of local codes...

Page 5: ...are met The vent system must be permanently installed per these installation instructions A room thermostat must control the furnace The use of fixed jumpers that will provide continuous heating is n...

Page 6: ...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 guid...

Page 7: ...ining 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 furn...

Page 8: ...et and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 mm per 1 17 kW per hour of the total input rating of all equipment in the enclosure Figure 5 EQUIPM...

Page 9: ...asher 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...

Page 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 Optional Return Air Base Upf...

Page 11: ...for closet or alcove installations are shown in Figure 12 This furnace may be installed in either an attic or a crawl space Either suspend the furnace from roof rafters or floor joists as shown in Fig...

Page 12: ...wn 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 th...

Page 13: ...16 through 22 1 Remove the four mounting screws Figure 15 which secure the combustion air inducer pressure switch assembly to the orifice plate Lift the assembly and rotate it 90 clockwise or counter...

Page 14: ...sembly 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...

Page 15: ...NG Figure 23 Vent Connection 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...

Page 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 seal...

Page 17: ...ions Joints 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 th...

Page 18: ...onfigureations 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 elbo...

Page 19: ...onfigureations 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 elbo...

Page 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...

Page 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...

Page 22: ...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...

Page 23: ...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 pr...

Page 24: ...24 of 39 Issue 1031 Horizontal Applications Possible Gas Piping Configurations NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 27 NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABI...

Page 25: ...n and service 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...

Page 26: ...on This terminal is energized in the heating mode when the combustion air inducer is operating Any humidifier rated up to one amp can be connected to this terminal with the neutral leg of the circuit...

Page 27: ...506526 01 Page 27 of 39 Issue 1031 Wiring Diagram Figure 32...

Page 28: ...506526 01 Page 28 of 39 Issue 1031 Typical Field Wiring Diagram Figure 33 Figure 34 Integrated Control Automatic Hot Surface Ignition System...

Page 29: ...ns exactly a fire or explosion may result causing property damage personal injury or death WARNING 6 Move switch on gas valve to OFF Do not force See Figure 35 7 Wait five minutes to clear out any gas...

Page 30: ...obtain accurate reading shut off all other gas appliances connected to meter Supply Pressure Measurement A threaded plug on the inlet side of the gas valve provides access to the supply pressure tap R...

Page 31: ...blower speed to decrease the temperature Decrease the blower speed to increase the temperature rise Failure to adjust the temperature rise may cause erratic limit operation Fan Control The fan on time...

Page 32: ...speed terminal NOTE Termination of any unused motor leads must be insulated 4 Place unused blower speed tap on integrated control PARK terminal or insulate 5 Refer to blower speed selection chart on u...

Page 33: ...all wiring for loose connections 2 Check for the correct voltage at the furnace furnace operating Correct voltage is 120VAC 10 3 Check amp draw on the blower motor with inner blower panel in place Uni...

Page 34: ...ve the combustion air inducer to avoid damaging blower gasket If gasket is damaged it must be replaced to prevent leakage 5 Remove the collector box located behind the combustion air inducer Be carefu...

Page 35: ...inserts 16 Reinstall collector box and combustion air assembly Reinstall all screws to the collector box and combustion air inducer Failure to replace all screws may cause leaks Inspect gaskets for a...

Page 36: ...seal between the return air and the room where the furnace is installed Return air duct Must be properly attached and provide an air seal to the unit Operating performance Unit must be observed during...

Page 37: ...air parts are available through independent Allied Air dealers When ordering parts include the complete furnace model number listed on the CSA International nameplate Example A801UH045JP24A 01 All ser...

Page 38: ...506526 01 Page 38 of 39 Issue 1031 START UP PERFORMANCE CHECK LIST UNIT SET UP...

Page 39: ...506526 01 Page 39 of 39 Issue 1031 UNIT OPERATION...

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