Aire-Flo 92AF1DF Installation Instructions Manual

Manual is about: Counterflow Warm Air Gas Furnaces

Summary of 92AF1DF

  • Page 1

    Page 1 02/11 *2p0211* 506721−01 *p506721-01* p.O. Box 799900, dallas, tx 75379−9900 installation instructions 92af1df and 95af1df counterflow warm air gas furnaces 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 f...

  • Page 2

    Page 2 92af1df/95af1df unit dimension − inches (mm) air exhaust air outlet combustion air intake flow 2−1/16 (52) gas piping inlet (either side) electrical inlet (either side) return air opening front view side view top view a b c 3/4 (19) 27−3/4 (705) 19−1/4 (489) 9−1/8 (232) right 6−9/16 (167) lef...

  • Page 3

    Page 3 92af1df/95af1df parts arrangement figure 1 control box (includes integrated control, transformer and door switch) bag assembly blower motor (hidden) blower access panel burner access panel combustion air inducer burner box assembly (includes sensor, rollout switches and ignitor) gas valve blo...

  • Page 4

    Page 4 92af1df and 95af1df gas furnace the 92af1df and 95af1df category iv gas furnaces are shipped ready for installation in the counterflow posi- tion. Each furnaces is equipped for installation in natural gas applications. A conversion kit (ordered separately) is re- quired for use in propane/lp ...

  • Page 5

    Page 5 locations and clearances this furnace is csa international certified for installation clearances to combustible material as listed on the unit nameplate and in the table in figure 11. Accessibility and ser- vice clearances must take precedence over fire protection clearances. For installation...

  • Page 6

    Page 6 • the input rate and temperature rise must be set per the furnace rating plate. • one hundred percent (100%) outdoor air must be pro- vided for combustion air requirements during construc- tion. Temporary ducting may supply outdoor air to the furnace. Do not connect duct directly to the furna...

  • Page 7

    Page 7 general these instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation. In addition to the requirements outlined previously, the fol- lowing general recommendations must be considered when installing ...

  • Page 8

    Page 8 all gas-fired appliances require air for the combustion pro- cess. If sufficient combustion air is not available, the fur- nace or other appliance will operate inefficiently and un- safely. Enough air must be provided to meet the needs of all fuel−burning appliances and appliances such as exh...

  • Page 9

    Page 9 figure 5 equipment in confined space − all air from outside (inlet air from crawl space and outlet air to ventilated attic) note−the inlet and outlet air openings shall each have a free area of at least one square inch per 4,000 btu (645mm 2 per 1.17kw) per hour of the total input rating of a...

  • Page 10

    Page 10 figure 8 rigid leg remove shipping bolt and washer 92af1df090p16c installation − setting equipment warning do not install the furnace on its front, back or in the horizontal position. See figure 10. Do not connect the return air ducts to the back of the furnace. Doing so will adversely affec...

  • Page 11

    Page 11 warning improper installation of the furnace can result in per- sonal injury or death. Combustion and flue products must never be allowed to enter the return air system or air in the living space. Use sheet metal screws and joint tape to seal return air system to furnace. In platform install...

  • Page 12

    Page 12 table 2 combustible flooring base opening size cabinet width catalog number front to rear side to side in. Mm in. Mm b cabinet (17.5") 11m60 22 559 18 − 3/4 476 c cabinet (21") 11m61 22 559 22 − 3/4 578 figure 13 furnace supply air plenum combustible flooring base properly sized floor openin...

  • Page 13

    Page 13 filters this unit is not equipped with a filter or rack. A field−pro- vided filter is required for the unit to operate properly. Table 3 lists recommended filter size. A filter must be in place whenever the unit is operating. Table 3 furnace cabinet width filter size 16 x 25 x 1 (1) 17−1/2" ...

  • Page 14

    Page 14 important 92af1df/95af1df exhaust and intake connections are made of pvc. Use pvc primer and solvent ce- ment when using pvc vent pipe. When using abs vent pipe, use transitional solvent cement to make connections to the pvc fittings in the unit. Use pvc primer and solvent cement or abs solv...

  • Page 15

    Page 15 joint cementing procedure all cementing of joints should be done according to the specifications outlined in astm d 2855. Note − a sheet metal screw may be used to secure the intake pipe to the connector, if desired. Use a drill or self tapping screw to make a pilot hole. Danger danger of ex...

  • Page 16

    Page 16 1 − in areas where piping penetrates joists or interior walls, hole must be large enough to allow clearance on all sides of pipe through center of hole using a hanger. 2 − when furnace is installed in a residence where unit is shut down for an extended period of time, such as a vacation home...

  • Page 17

    Page 17 table 7 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 − 10,000 ft. Number of 90° elbow...

  • Page 18

    Page 18 figure 20 typical exhaust pipe connections transition 2” 2” 2” 3” pipe size determined in table 7. 2” 2” or do not transition from smaller to larger pipe size in horizontal runs of exhaust pipe. Top view exhaust intake * when transitioning up in pipe size, use the shortest length of 2” pvc p...

  • Page 19

    Page 19 intake piping the 92af1df/95af1df furnace may be installed in ei- ther direct vent or non−direct vent applications. In non− direct vent applications, when intake air will be drawn into the furnace from the surrounding space, the indoor air quality must be considered. Guidelines listed in com...

  • Page 20

    Page 20 figure 23 vent termination clearances for non−direct vent installations in the usa and canada k d e l b c f g a b j a m i h inside corner detail vent terminal air supply inlet area where terminal is not permitted fixed closed operable b fixed closed operable b b a = b = c = d = e = f = g = h...

  • Page 21

    Page 21 figure 24 vent termination clearances for direct vent installations in the usa and canada k d e l b c f g a b j a m i h inside corner detail vent terminal air supply inlet area where terminal is not permitted fixed closed operable b fixed closed operable b b a = b = c = d = e = f = g = h = i...

  • Page 22

    Page 22 details of intake and exhaust piping terminations for direct vent installations note − in direct vent installations, combustion air is tak- en from outdoors and flue gases are discharged to out- doors. Note − flue gas may be slightly acidic and may adversely affect some building materials. I...

  • Page 23

    Page 23 figure 27 c a e d b a b d d b c a c 12" 1 1 2 2 2" (51mm) vent pipe 3" (76mm) vent pipe a− clearance above grade or average snow accumulation b−horizontal separation between intake and exhaust c−minimum from end of exhaust to inlet of intake d−exhaust pipe length e−wall support distance from...

  • Page 24

    Page 24 figure 28 field−supplied wall termination or (15f74) wall ring termination kit see venting table 7 for maximum venting lengths with this arrangement. * use wall support every 24" (610 mm). Use two wall supports if extension is greater than 24" (610 mm) but less than 48" (1219 mm). Note − one...

  • Page 25

    Page 25 figure 30 direct vent concentric rooftop termination 71m80, 69m29 or 60l46 (us) 41w92 or 41w93 (canada) minimum above average snow accumulation sheet metal strap (clamp and sheet metal strap must be field installed to support the weight of the termination kit.) flashing (not furnished) clamp...

  • Page 26

    Page 26 figure 35 ÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉ 12” (305 mm) minimum above grade or average snow accumulation 1/2” (13 mm) foam insulation (field furnished) 5” (127 mm) 5−1/2” (140 mm) exhaust air intake air grade 12” (305 mm) intake air exhaust air grade 12” (305 mm) max. For 2”...

  • Page 27

    Page 27 92af1df/95af1df direct vent application using existing chimney note − do not discharge exhaust gases directly into any chimney or vent stack. If ver- tical discharge through an existing unused chimney or stack is required, insert piping inside chimney until the pipe open end is above top of ...

  • Page 28

    Page 28 figure 40 12" (305mm) above grade or average snow accumulation unconditioned space 1/2" (13mm) foam insulation 1/2" (13mm) foam insulation in unconditioned space *wall support outside wall size ter- mination pipe per table 8. Field−provided reducer may be required to adapt larger vent pipe s...

  • Page 29

    Page 29 5 − if unit will be started immediately upon completion of installation, prime trap per procedure outlined in unit start−up section. Condensate line must slope downward away from the trap to drain. If drain level is above condensate trap, condensate pump must be used. Condensate drain line s...

  • Page 30

    Page 30 figure 45 adapter 1/2 inch slip x 1/2 inch mpt (not furnished) drain trap assembly (furnished) vent drain trap clean out 5 feet maximum coupling 1/2 inch slip x slip (not furnished) 90° elbow 1/2 inch pvc (not furnished) 1/2 inch pvc pipe (not furnished) 1/2 inch pvc pipe (not furnished) 1 (...

  • Page 31

    Page 31 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 li...

  • Page 32

    Page 32 ground joint union automatic gas valve (with manual shut−off valve) field provided and installed ground joint union left−side piping (standard) right side piping (alternate) automatic gas valve (with manual shut−off valve) drip leg drip leg manual main shut−off valve (with 1/8 in. Npt plugge...

  • Page 33

    Page 33 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 ap- pliances, the venting system is likely to be too large to properly vent the remaining attached appliances. Conduct the following test while each a...

  • Page 34

    Page 34 figure 49 make−up box inside cabinet left side interior make−up box (factory− installed left side) figure 50 make−up box outside cabinet right side exterior make−up box (field provided right side) refer to figure 52 for field wiring and figure 53 for schematic wiring diagram and troubleshoot...

  • Page 35

    Page 35 thermostat furnace condensing unit 92af1df/95af1df and condensing unit thermostat designations (refer to specific thermostat and outdoor unit.) common power heat indoor blower y c r g w1 y c r g w cooling figure 51 condensing unit condensing unit common *condensing unit *note − r" required o...

  • Page 36

    Page 36 typical 92af1df/95af1df wiring diagram figure 53.

  • Page 37

    Page 37 terminal designations hum line xfmr eac cool heat park cont neutrals humidifier (120vac) input (120vac) transformer (120vac) indoor air qality accessory air cleaner (120vac) blower − cooling speed (120vac) blower − heating speed (120vac) dead terminals to park alternate spd taps continuous b...

  • Page 38

    Page 38 placing the furnace into operation: 92af1df/95af1df units are equipped with an automat- ic hot surface ignition system. Do not attempt to manually light burners on this furnace. Each time the thermostat calls for heat, the burners will automatically light. The ig- nitor does not get hot when...

  • Page 39

    Page 39 gas pressure adjustment gas flow (approximate) table 11 gas meter clocking chart unit seconds for one revolution natural lp 1 cu ft dial 2 cu ft dial 1 cu ft dial 2 cu ft dial −045 80 160 200 400 −070 55 110 136 272 −090 41 82 102 204 −110 33 66 82 164 natural−1000 btu/cu ft lp−2500 btu/cu f...

  • Page 40

    Page 40 table 14 conversion kit and pressure switch requirements at varying altitudes unit natural to lp/propane high altitude natural burner orifice kit high altitude lp/propane burner orifice kit high altitude pressure switch high altitude pressure switch 92af1df 95af1df 0 − 7500 ft (0 − 2286m) 75...

  • Page 41

    Page 41 other unit adjustments primary limit the primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no ad- justment. Flame rollout switches (two) these manually reset switches are located on the front of the burner box. Pressure switch the pre...

  • Page 42

    Page 42 service warning electrical shock, fire, or explosion hazard. Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage. Improper servicing could result in dangerous opera- tion, serious injury, death, or property damage. Before se...

  • Page 43

    Page 43 19 − reinstall heat exchanger into cabinet making sure that the clamshells of the heat exchanger assembly are resting on the support located at the rear of the cabi- net. Remove the indoor blower to view this area through the blower opening. 20 − re-secure the supporting screws along the ves...

  • Page 44

    Page 44 planned service a service technician should check the following items dur- ing an annual inspection. Power to the unit must be shut off for safety. Fresh air grilles and louvers (on the unit and in the room where the furnace is installed) − must be open and unob- structed to provide combusti...

  • Page 45

    Page 45 repair parts list the following repair parts are available. When ordering, include the complete furnace model number listed on the csa nameplate −− example: 92af1df090p16c. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier. Ca...

  • Page 46

    Page 46 start−up & performance checklist gas supply pressure supply air line voltage gas supply natural gas lp propane gas piping connections tight leak tested supply line pressure w.C.________ 1 intake / exhaust pipe all joints primed and glued terminations installed properly pipes supported conden...

  • Page 47

    Page 47 contractor’s: name_________________________telephone_____________checklist completed____________________ job address_____−________________________________technician’s name___________________________________ 1 heating mode gas manifold pressure w.C._____ combustion sample co 2 % ______ co ppm...

  • Page 48

    Page 48 requirements for commonwealth of massachusetts modifications to nfpa−54, chapter 10 revise nfpa−54 section 10.8.3 to add the following re- quirements: for all side wall, horizontally vented, gas−fueled equipment installed in every dwelling, building or structure used in whole or in part for ...