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Aire-Flo 92AF1UH Installation Instructions Manual

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This manual must be left with the homeowner for future reference.
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.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
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Supersedes 506720−01
08/12
*2P0812*
P.O. Box 799900, Dallas, TX 75379−9900
INSTALLATION INSTRUCTIONS
92AF1UH and 95AF1UH
Warm Air Gas Furnaces
Upflow/Horizontal Left and Right Air Discharge

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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 installer (or
equivalent), service agency or the gas supplier.
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Summary of Contents for Aire-Flo 92AF1UH

  • Page 1: Table Of Contents

    P.O. Box 799900, Dallas, TX 75379−9900 INSTALLATION INSTRUCTIONS 92AF1UH and 95AF1UH Warm Air Gas Furnaces Upflow/Horizontal Left and Right Air Discharge This manual must be left with the homeowner for future reference. 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.

  • Page 2: Unit Dimensions

    92AF1UH and 95AF1UH Unit Dimensions − inches (mm) NOTE − 20C and 20D size units that require air EXHAUST AIR 3−3/8 volumes 1800 cfm or over (850 L/s) must have OUTLET (86) one of the following 1. Single side return air with transition, to accommodate 2 (51) 20 x 25 x 1 in.

  • Page 3: 92Af1Uh/95Af1Uh Gas Furnace

    Installation and service must be performed by a licensed professional in- The 92AF1UH and 95AF1UH can be installed as either a staller (or equivalent), service agency or the gas sup- Direct Vent or a Non−Direct Vent gas central furnace.

  • Page 4: Use Of Furnace As Construction Heater

    Installation Locations Heating Unit Installed Parallell to Air Handler Unit Dampers This furnace is CSA International certified for installation (open during heating operation only) clearances to combustible material as listed on the unit nameplate and in the table in figure 9. Accessibility and ser- vice clearances must take precedence over fire protection Gas Unit clearances.

  • Page 5: General

    Air filters must be installed in the system and must be WARNING maintained during construction. Air filters must be replaced upon construction comple- The State of California has determined that this prod- tion. uct may contain or produce a chemical or chemicals, in very low doses, which may cause serious illness The input rate and temperature rise must be set per the or death.
  • Page 6 A confined space is an area with a volume less than 50 cubic this section to install 92AF1UH/95AF1UH furnaces to feet (1.42 m ) per 1,000 Btu (.29 kW) per hour of the com−...
  • Page 7 or by ducts with the outdoors or spaces (crawl or attic) that area, the blocking effect of louvers, grilles, or screens freely communicate with the outdoors or indirectly must be considered. If the design and free area of protec- through vertical ducts. Each opening shall have a mini- tive covering is not known for calculating the size opening mum free area of 1 square inch per 4,000 Btu (645mm required, it may be assumed that wood louvers will have...

  • Page 8: Setting Equipment

    Shipping Bolt Removal Installation − Setting Equipment Units with 1/2 hp blower motor are equipped with three flex- WARNING ible legs and one rigid leg. The rigid leg is equipped with a shipping bolt and a flat white plastic washer (rather than the Do not connect the return air duct to the back of the furnace.
  • Page 9 Fire, explo- 92AF1UH/95AF1UH applications which include side sion, carbon monoxide poisoning, personal injury return air and a condensate trap installed on the same and/or property damage could result.
  • Page 10 Back Bottom Panel FIGURE 13 FIGURE 12 The 92AF1UH/95AF1UH furnace can be installed in hori- Removing the Bottom Panel zontal applications with either right− or left−hand air dis- charge. Remove the two screws that secure the bottom cap to the furnace.
  • Page 11 TYPICAL HORIZONTAL APPLICATION Horizontal Applications Installation Clearances Internal Brace Metal Strap Right−Hand Discharge (provided with kit) (typical) Left End Right End Bracket (typical) Flow Flow Bottom (Floor)** Left−Hand Discharge Left End Right End FIGURE 15 Flow Flow Bottom (Floor)** Flow NOTE −...

  • Page 12: Filters

    Supply Air Plenum INTAKE PIPE If the furnace is installed without a cooling coil, a removable EXHAUST PIPE *GAS access panel should be installed in the supply air duct. The CONNECTOR access panel should be large enough to permit inspection of the heat exchanger.
  • Page 13 CAUTION IMPORTANT Solvent cements for plastic pipe are flammable liq- 92AF1UH/95AF1UH exhaust and intake connections uids and should be kept away from all sources of are made of PVC. Use PVC primer and solvent ce- ignition. Do not use excessive amounts of solvent ment when using PVC vent pipe.

  • Page 14: Joint Cementing Procedure

    TABLE 3 OUTDOOR TERMINATION KITS USAGE STANDARD CONCENTRIC Outdoor Outdoor Exhaust Exhaust Flush- 1−1/2" 2" 3" 2" Wall Plate 3" Wall Plate 2" Wall VENT Accelerator Accelerator Mount Concentric Concentric Concentric Ring Kit PIPE (Dia. X (Dia. X UNIT DIA. Length) Length) (in.)

  • Page 15: Venting Practices

    SCHEDULE 40 PVC − 5’ all other pipe* − 3’ If an 92AF1UH/95AF1UH furnace replaces a fur- nace which was commonly vented with another gas * See table 2 for allowable pipe. appliance, the size of the existing vent pipe for that NOTE −...

  • Page 16: Vent Piping Guidelines

    Vent Piping Guidelines Use the following steps to correctly size vent pipe diameter. The 92AF1UH/95AF1UH can be installed as either a Non−Direct Vent or a Direct Vent gas central furnace. NOTE − In Non-Direct Vent installations, combustion air is taken from indoors and flue gases are discharged outdoors.
  • Page 17 TABLE 5 Maximum Allowable Intake or Exhaust Vent Length in Feet *Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe size. Standard Termination at Elevation 0 − 4500’ 2"...
  • Page 18 TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN UPFLOW DIRECT OR NON−DIRECT VENT APPLICATIONS EXHAUST INTAKE EXHAUST INTAKE 2” 2” 2” 2” 3” 3” TRANSITION TRANSITION 2” 2” *2” *2” DO NOT transition from smaller to larger pipe in horizontal runs of exhaust pipe.
  • Page 19 Intake Piping TYPICAL AIR INTAKE PIPE CONNECTIONS HORIZONTAL NON−DIRECT VENT APPLICATIONS The 92AF1UH/95AF1UH furnace may be installed in ei- (Horizontal Right−Hand Air Discharge Application Shown) ther direct vent or non−direct vent applications. In non− direct vent applications, when intake air will be drawn into...
  • Page 20 20°F (6.7°C), units with long runs of vent doors. The 92AF1UH/95AF1UH is then classified as a di- pipe through unconditioned space, even when insulated, rect vent, Category IV gas furnace.

  • Page 21: Vent Termination Clearances

    VENT TERMINATION CLEARANCES FOR NON−DIRECT VENT INSTALLATIONS IN THE USA AND CANADA INSIDE CORNER DETAIL Fixed Operable Fixed Closed Closed Operable AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED US Installations Canadian Installations Clearance above grade, veranda, 12 inches (305mm) or 12 in.
  • Page 22 VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATIONS IN THE USA AND CANADA INSIDE CORNER DETAIL Fixed Operable Fixed Closed Closed Operable AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED US Installations Canadian Installations Clearance above grade, veranda, 12 inches (305mm) or 12 in.
  • Page 23 Details of Intake and Exhaust Piping Terminations for FIELD−SUPPLIED WALL TERMINATION OR Direct Vent Installations (15F74) WALL RING TERMINATION KIT NOTE − In Direct Vent installations, combustion air is tak- en from outdoors and flue gases are discharged to out- NOTE −...
  • Page 24 Intake Front View of Intake and Exhaust Exhaust Intake Exhaust TABLE 6 2" (51mm) 3" (76mm) Vent Pipe Vent Pipe A− Clearance above grade or average snow 12" (508MM) Min. 12" (508MM) Min. accumulation 12" B−Horizontal 6" (152MM) Min. 6" (152MM) Min. separation between 24"...
  • Page 25 3" (76mm) LARGER VENT PIPE SIZE 2" (51mm) CONDITIONED SPACE TO TERMINATION *92AF1UH/95AF1UH−045, −070 and −090 units with the flush mount termination must use the 1 1/2"accelerator sup- SIZE TERMINATION plied with the kit. PER TABLE 7 NOTE − Care must be taken to avoid recirculation of ex- haust back into intake pipe.

  • Page 26: Front View

    1−1/2" (38mm) accelerator EXHAUST VENT Front View provided in 71M80 & 44W92 EXHAUST kits for 045 & 070 SIZE VENT TERMINATION PIPE PER INTAKE FLASHING TABLE 7. 12” (305mm) INTAKE (Not Furnished) Minimum Above Average Snow Accumulation Top View 1/2" (13mm) Foam Insulation in Unconditioned Space SHEET METAL STRAP (Clamp and sheet metal strap...
  • Page 27 WALL TERMINATION KITS (CLOSE−COUPLE) EXTENDED VENT FOR GRADE CLEARANCE 2 inch (51 mm) 22G44 (US) 3 inch (76 mm) 44J40 (US) If intake and exhaust pipe is less than 12 in. (305 mm) above snow accumulation or other obstructions, field− fabricated piping must be installed.
  • Page 28 92AF1UH/95AF1UH DIRECT VENT APPLICATION 12" (305mm) MAX. for 2" (51mm) 20" (508mm) MAX. for 3" (76mm) USING EXISTING CHIMNEY 1/2" (13mm) ARMAFLEX STRAIGHT−CUT OR INSULATION IN ANGLE−CUT IN DIRECTION 3"−8" UNCONDITIONED SPACE 1/2" (13mm) OF ROOF SLOPE * (76mm−203mm) ARMAFLEX FIELD−PROVIDED...
  • Page 29 CONDENSATE TRAP AND PLUG LOCATIONS 92AF1UH/95AF1UH NON−DIRECT VENT (Unit shown in upflow position) APPLICATION USING EXISTING CHIMNEY Trap SIZE TERMINATION STRAIGHT−CUT OR (same on ANGLE−CUT IN DIRECTION PIPE PER TABLE 7. OF ROOF SLOPE right side) 1−1/2 in. EXHAUST VENT 1/2"...
  • Page 30 T o Drai n *Piping from furnace must slope down a minimum of 1/4" per ft. toward trap. FIGURE 45 92AF1UH/95AF1UH With Evaporatoir Coil Using a Separate Drain (Unit shown in horizontal left−hand discharge position) Field Provided Vent Evaporator (4" min. to 5" max. above...
  • Page 31 HorizontalFurnace4” Min. to 5” Max.above condensatedrain connection) FurnaceCondensate Drain Connection Optional FIGURE 49 FIGURE 48 92AF1UH/95AF1UH With Evaporator Coil Using a Common Drain (Unit shown in horizontal left−hand discharge position) (4” min. to 5” Max.above Evaporator condensatedrain connection) Coil 4”min 5”max...
  • Page 32 TRAP / DRAIN ASSEMBLY USING 1/2" PVC OR 3/4" PVC Optional Condensate Drain Connection Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) 90° Street Elbow 3/4 inch PVC (not furnished) Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) Condensate Drain Connection In Unit 1 (25 mm) Min.

  • Page 33: Gas Piping

    Gas Piping 4 − Piping should be sloped 1/4 inch per 15 feet (6mm per 5.6m) upward toward the gas meter from the furnace. The piping must be supported at proper intervals, ev- ery 8 to 10 feet (2.44 to 3.05m), using suitable hangers CAUTION or straps.
  • Page 34 Left−Side Piping Right−Side Piping AUTOMATIC GAS VALVE (Standard) (Alternate) (with manual shut−off valve) Bellows Grommet MANUAL MAIN SHUT−OFF MANUAL VALVE Plug Plug MAIN SHUT−OFF VALVE GROUND GROUND JOINT JOINT UNION UNION DRIP LEG Gas Valve Gas Valve Bellows Grommet DRIP LEG FIELD PROVIDED AND INSTALLED...

  • Page 35: Electrical

    TABLE 8 GAS PIPE CAPACITY − FT /HR (kL/HR) Length of Pipe−Feet(m) Nominal Internal Iron Pipe Size Diameter −Inches(mm) −Inches(mm) (3.048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336) (24.384) (27.432) (30.480) .622 (12.7) (17.799) (4.96) (3.40) (2.75) (2.32) (2.07) (1.87) (1.73) (1.61) (1.50) (1.42)
  • Page 36 Maximum Over−Current Protection allowed is 15 AMP. 2 − When the 92AF1UH/95AF1UH is running in the heat- Holes are on both sides of the furnace cabinet to facilitate ing mode, the indoor blower will run on the heating wiring.
  • Page 37 TYPICAL 92AF1UH/95AF1UH WIRING DIAGRAM FIGURE 57 Page 37...

  • Page 38: Unit Start Up

    The gas valve on the 92AF1UH/95AF1UH is equipped parts that have been wet or to replace the furnace, with a gas control switch (lever). Use only your hand to if deemed necessary.
  • Page 39 Priming Condensate Trap 9 − Replace the upper access panel. The condensate trap should be primed with water prior to 10− Turn on all electrical power to to the unit. start−up to ensure proper condensate drainage. Either 11− Set the thermostat to desired setting. pour 10 fl.

  • Page 40: Gas Pressure Measurement

    10. thorities. Manifold Pressure Measurement 92AF1UH/95AF1UH units require no manifold pressure 1 − Remove the threaded plug from the outlet side of the adjustments for operation at altitudes up to 10,000 feet gas valve and install a field−provided barbed fitting.
  • Page 41 92AF1UH/95AF1UH as well as to other gas- 7 − Use the flame of match or candle to test for spillage of fired appliances which are separately vented.

  • Page 42: Other Unit Adjustments

    Other Unit Adjustments HEAT FAN-OFF TIME IN SECONDS Primary Limit. The primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no ad- justment. NO JUMPER To adjust fan−off timing, reposition jumper across pins to Flame Rollout Switches (Two) achieve desired setting.

  • Page 43: Service

    Service Winterizing and Condensate Trap Care 1 − Turn off power to the furnace. 2 − Have a shallow pan ready to empty condensate water. WARNING 3 − Remove the clean out cap from the condensate trap ELECTRICAL SHOCK, FIRE, and empty water.

  • Page 44: Integrated Control Fault Codes

    Integrated Control Diagnostic Codes Repair Parts List DIAGNOSTIC CODES The following repair parts are available through your local dealer.. When ordering, include the complete furnace mod- LED Status DESCRIPTION el number listed on the CSA nameplate −− Example: No power to control or control harware 92AF1UH045P08B.

  • Page 45: Start Up Checklist

    Start−Up & Performance Checklist UNIT SET UP (Typical) Furnace: Model Number_______________ Serial Number_________________ SUPPLY Line Voltage GAS SUPPLY LP Propane Gas Natural Gas Piping Connections Tight Leak Tested Flter Supply Line Pressure W.C.________ RETURN AIR Gas Supply Pressure DUCT SYSTEM SUPPLY AIR DUCT Sealed Insulated (if necessary)
  • Page 46 UNIT OPERATION HEATING MODE (Typical) COOLING MODE GAS MANIFOLD PRESSURE W.C._____ INDOOR BLOWER AMPS______ COMBUSTION SAMPLE CO CO PPM_______ TEMPERATURE DROP ______ Return Duct Temperature _________ INDOOR BLOWER AMPS______ Supply Duct Temperature _______ Temperature Drop = _________ TEMPERATURE RISE TOTAL EXTERNAL STATIC (dry coil) Supply Duct Temperature ________ Supply External Static _______ Return Duct Temperature...
  • Page 47 Requirements for Commonwealth of Massachusetts Modifications to NFPA−54, Chapter 10 4 − INSPECTION. The state or local gas inspector of the side wall, horizontally vented, gas−fueled equipment Revise NFPA−54 section 10.8.3 to add the following re- shall not approve the installation unless, upon inspec- quirements: tion, the inspector observes carbon monoxide detec- For all side wall, horizontally vented, gas−fueled equipment...

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