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Supersedes 07/2012
04/13
*2P0413*
P.O. Box 799900, Dallas, TX 75379-9900
INSTALLATION INSTRUCTIONS
Warm Air Gas Furnaces
Upflow/Horizontal Left and Right Air Discharge
TABLE OF CONTENTS
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80AF1UH
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person
al injury or loss of life. Installation and service must
be performed by a licensed professional HVAC in
staller (or equivalent), service agency or the gas sup
plier.
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Summary of Contents for Aire-Flo 80AF1UH
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Page 1: Table Of Contents
......... . Twinning the 80AF1UH Furnace . -
Page 2: Unit Dimensions
(Either Side) (406) (Either Side) 1−15/16 (49) (16) 23−1/2 3−1/4 (597) (83) (19) (19) Bottom Return Bottom Return Air Opening Air Opening 80AF1UH Model No. 045P12A 14-1/2 13-3/8 4-3/4 070P12A 090P12B 17-1/2 16-3/8 6-1/4 090P16B 110P16C 19-7/8 19-1/2 110P20C 135P20D... -
Page 3: 80Af1Uh Gas Furnace
80AF1UH Gas Furnace Certifications 80AF1UH units are CSA International certified to ANSI The 80AF1UH unit is shipped ready for installation in the Z21.47. upflow or horizontal right position (for horizontal left posi tion the combustion air pressure switch must be moved). -
Page 4: Use Of Furnace As A Construction Heater
Use of Furnace as Construction Heater manually operated, it must be equipped to prevent operation It is not recommended using 80AF1UH units as a construc of either the heating or the cooling unit, unless it is in the full tion heater during any phase of construction. Very low re... -
Page 5: Combustion, Dilution & Ventilation Air
The requirements for providing air for combustion and ven this section to install 80AF1UH furnaces to ensure efficient tilation depend largely on whether the furnace is installed in and safe operation. You must consider combustion air an unconfined or a confined space. - Page 6 This space also includes adjacent rooms which are not Air from Inside separated by a door. Though an area may appear to be un If the confined space that houses the furnace adjoins a confined, it might be necessary to bring in outdoor air for space categorized as unconfined, air can be brought in by combustion if the structure does not provide enough air by providing two permanent openings between the two...
- Page 7 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE (Inlet Air from Crawlspace and Outlet Air to Ventilated Attic) CHIMNEY OR GAS VENT VENTILATION LOUVERS (Each end of attic) OUTLET WATER FURNACE HEATER INLET VENTILATION LOUVERS (For unheated crawl space) NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (645 ) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.
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Page 8: Setting Equipment
The 80AF1UH gas furnace can be installed as shipped in either the upflow position or the horizontal position. Select a location that allows for the required clearances... - Page 9 Return Air -- Upflow Applications Single Side Return Air Return air can be brought in through the bottom or either (with transition and filter) 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 Horizontal Applications Remove the two screws that secure the bottom cap to the The 80AF1UH furnace can be installed in horizontal ap furnace. Pivot the bottom cap down to release the bottom plications. Order horizontal suspension kit (51W10) or use panel.
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Page 11: Filters
TABLE 1 Horizontal Application Unit Installed on Platform Filter Size Furnace Line contact is permissible but not preferred Cabinet Width Side Return Bottom Return See the unit nameplate for clearances. A - 14-1/2” 16 X 25 X 1 (1) 14 X 25 X 1 (1) B - 17-1/2”... -
Page 12: Venting
Venting 1 - Remove the four mounting screws (figure 14) which secure the combustion air inducer / pressure switch A 4-inch diameter flue transition is factory‐installed on the assembly to the orifice plate. Lift the assembly and ro combustion air inducer outlet of all models. Figure 15 tate it 90 degrees clockwise or counterclockwise to ei... - Page 13 HORIZONTAL RIGHT POSITION HORIZONTAL LEFT POSITION Top Vent Discharge Top Vent Discharge Vent Pipe Vent Pipe Pressure Switch Pressure Flue Switch Transition Cover Plate Flue Transition FLOW Collector Box FLOW Make-Up Box Cover Plate Make-Up Box Collector Box D Disconnect pressure switch hose from barbed fitting on the D Gas supply piping must be brought into the unit from the bot...
- Page 14 The inches (152 mm) from the furnace vent outlet. See figure 80AF1UH is not approved for use with horizontal venting. NOTE - Use these instructions as a guide. They do not su Venting Using a Masonry Chimney persede local codes.
- Page 15 (interior or outside General Venting Requirements wall) is PROHIBITED. The chimney must first be lined Vent all 80AF1UH furnaces according to these instruc with either type B1 vent or an insulated single wall tions: flexible vent lining system which has been sized ac...
- Page 16 6 - The entire length of single wall metal vent connector flue collar by self-drilling screws or other approved means, except vent connectors of listed type B vent shall be readily accessible for inspection, cleaning, material which shall be assembled according to the and replacement.
- Page 17 TABLE 3 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) Height Lateral 3 Inch 4 Inch 5 Inch 6 Inch Appliance Input Rating in Thousands of Btu Per Hour (feet) (feet) NOTE - Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system.
- Page 18 TABLE 4 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 Rise Appliance Input Rating in Thousands of Btu Per Hour (feet) (feet)
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Page 19: 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 In the event that an existing furnace is removed from a tables in Appendix G. (These are in the current stan venting system commonly run with separate gas ap... - Page 20 TABLE 6 Gas Pipe Capacity - ft /hr (m /hr) Nominal Length of Pipe - feet (m) Internal Iron Pipe Diameter Size inches inches (mm) (3.048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336) (24.384) (27.432) (30.480) (mm) .622 (12.7) (17.799) (4.87) (3.34) (2.69) (2.29)
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Page 21: Electrical
Take precautions to neutralize electrostatic charge by NOTE - The 80AF1UH furnace contains electronic compo touching your hand and tools to metal nents that are polarity sensitive. Make sure that the furnace prior to handling the control. - Page 22 2 - When the 80AF1UH is running in the heating mode, Generator Use - Voltage Requirements the indoor blower will run on the heating speed.
- Page 23 80AF1UH Schematic Wiring Diagram FIGURE 29 Page 23...
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Page 24: Integrated Control
Integrated Control INTEGRATED CONTROL (Automatic Hot Surface Ignition System) TERMINAL DESIGNATIONS Humidifier (120VAC) Input (120VAC) LINE Transformer (120VAC) XFMR Indoor Air Qality Accessory Air Cleaner (120VAC) Blower - Cooling Speed (120VAC) COOL Blower - Heating Speed (120VAC) HEAT Dead terminals to park alternate spd taps PARK Continuous blower CONT... -
Page 25: Unit Start-Up
“Turning Off Gas to Unit” and call your service techni The gas valve on the 80AF1UH unit will be equipped with a cian or gas supplier. gas control switch. Use only your hand to move the switch. -
Page 26: Gas Pressure Adjustment
Take combustion sample beyond the flue out TABLE 7 let and compare to the tables below. The maximum car GAS METER CLOCKING CHART bon monoxide reading should not exceed 50 ppm. Seconds for One Revolution TABLE 8 80AF1UH Natural 80AF1UH For Nat For L.P. Unit Unit... -
Page 27: Other Unit Adjustments
TABLE 9 Manifold Pressure Settings at all Altitudes Line Pressure in.wg. Model 0-2000 ft 2105-4500 ft. 4501-7500 ft 7501 - 10,000 ft Input Size 13.0 LP/propane 10.5 10.0 10.0 11.0 13.0 13.0 LP/propane 10.0 10.0 10.0 11.0 13.0 13.0 LP/propane 10.0 11.0 13.0... -
Page 28: Service
Filters NOTE - Termination of any unused motor leads must be All 80AF1UH filters are installed external to the unit. Filters insulated. should be inspected monthly. Clean or replace the filters 4 - Place unused blower speed tap on integrated control when necessary to ensure that the furnace operates prop... -
Page 29: Twinning The 80Af1Uh Furnace
The coil of the isolation relay nace. connects from the thermostat ”W” to 24 VAC common. The contacts of the relay connect ”R” to ”W” on the non-thermo stat twin. 80AF1UH BURNER ASSEMBLY & REMOVAL Rollout Switches Retention Rings (-090, -110 -135 units) Rollout Switches... -
Page 30: Repair Parts List
FIELD WIRING FOR TWINNING THE 80AF1UH TWIN TWIN SINGLE STAGE THERMOSTAT TWO-STAGE THERMOSTAT Call For Cool Call For Cool TWIN 1 TWIN 1 Call For Fan Call For Fan Call For 1st Call For Heat Stage Heat Call For 2nd... -
Page 31: Start-Up And Performance Checklist
Start-Up & Performance Check List UNIT SET UP Unit Model Number_______________ Serial Number___________________ SUPPLY Line Voltage Gas Supply Pressure Filter RETURN RETURN DUCT SYSTEM GAS SUPPLY SUPPLY AIR DUCT LP/Propane Gas Natural Gas Sealed Piping Connections Tight Insulated (if necessary) Leak Tested Registers Open and Unobstructed Supply Line Pressure “... - Page 32 UNIT OPERATION Combustion CO SUPPLY Thermostat Gas Manifold Pressure Temperatures Filter Blower Motor Amps Duct Static RETURN RETURN COOLING MODE HEATING MODE INDOOR BLOWER AMPS______ GAS MANIFOLD PRESSURE “W.C._____ TEMPERATURE DROP COMBUSTION SAMPLE CO CO PPM_______ ______ Return Duct Temperature _________ Supply Duct Temperature _______ INDOOR BLOWER AMPS______...
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