Page 2 - Fig. 2—Multipoise Orientation
Installation Codes (NSCNGPIC). Wear safety glasses and workgloves. Have a fire extinguisher available during start-up andadjustment procedures and service calls. Recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit and in instructions ormanuals, be ale...
Page 3 - Fig. 3—Bottom Filter Arrangement; WASHABLE
5. Check for blockages in combustion-air and vent pipes annu- ally. 6. Check burners for cleanliness annually. Personal injury could result from sharp metal edges, etc. Usecare when removing parts. Step 1—Cleaning and/or Replacing Air Filter The air filter arrangement may vary depending on the appli...
Page 4 - Step 3—Cleaning Burners; Fig. 5—Burner Box Assembly; MANIFOLD
7. Clean blower wheel and motor by using a vacuum with soft brush attachment. Be careful not to disturb balance weights(clips) on blower wheel vanes. Do not bend wheel or blades asbalance will be affected. 8. If greasy residue is present on blower wheel, remove wheel from the blower housing and wash...
Page 5 - Step 4—Cleaning Heat Exchangers; Fig. 6—Cleaning Inlet Openings of Primary Heat; PAM
Gas valve switch or knob MUST be facing forward or tiltedupward. Failure to follow this warning could result inproperty damage, personal injury, or death. 16. Replace burner box cover. 17. Turn on gas and electrical supplies to furnace. 18. Check for gas leaks. Never use matches, candles, flame, or ...
Page 6 - Fig. 8—Furnace Pressure and Drain Tubing Diagram; TUBE ROUTING
16. Check furnace operation through 2 complete heat operating cycles. Look through sight glass in burner enclosure to checkburners. Burner flames should be clear blue, almost transpar-ent. (See Fig. 9.) 17. Check for gas leaks. Never use matches, candles, flame, or other sources ofignition to check ...
Page 7 - Step 6—Servicing Hot Surface Ignitor; BURNER FLAME; Fig. 10—Gasket on Collector Box; RTV
assembly. See Flushing Collector Box and Drainage Systemsection for details on removing inducer assembly. Step 5—Flushing Collector Box and DrainageSystem 1. Turn off gas and electrical supplies to furnace. 2. Remove main furnace door. 3. Disconnect inducer motor and pressure switch wires or connect...
Page 8 - Step 7—Electrical Controls and Wiring
bracket and ignitor assembly to bottom of burner box. Thescrew in the bracket is always located toward outside ofburner box. The screw may be hidden by inlet box or inletpipe, but can be removed without removing either. Afterremoving screw, slide ignitor and bracket toward outside ofburner box and p...
Page 9 - Step 9—Winterizing; Fig. 12— Variable-Capacity Control Center; F MINIMUM INSTALLED
NOTE: Heat tape, when used, should be wrapped around the condensate drain trap and drain line. There is no need to use heattape within the furnace casing. Most heat tapes are temperatureactivated, and it is not practical to verify the actual heating of thetape. Check the following: 1. Check for sign...
Page 10 - Fig. 13—Inducer Housing Drain Tube
Do not use ethylene glycol (Prestone II antifreeze/coolant orequivalent automotive type). Failure of plastic componentswill occur. WIRING DIAGRAMS See figures 11, 12 and 16 for the Deluxe 4-Way MultipoiseFurnace wiring diagrams. TROUBLESHOOTING For an explanation of fault codes, refer to service lab...
Page 11 - Fig. 15—Service Label; COMPONENT TEST; STATUS CODE EXAMPLE; STATUS; SERVICE
Fig. 15—Service Label A99108 COMPONENT TEST STATUS CODE EXAMPLE 11 NO FAULT IN RECENT HISTORY DISPLAY - Indicates no faults have occurred within last five cycles. To read recent fault history put setup switch "SW-1" in the "ON" position. To clear recent faulthistory, put setup switch...
Page 12 - Fig. 16—Wiring Diagram; SCHEMATIC DIAGRAM
Fig. 16—Wiring Diagram A00350 FRS LS ALS FSE GV C M P HI NOTE #3 3 PL1 PL7 1 2 10 4 6 12 OR N BR N YEL GR N YEL 3 PL9 HSI 1 2 1.5 AMP EA C 1 EA C 2 2 1 PL4 1 2 3 7 8 4 5 6 YEL OR N BR N GR N BL U BR N RE D 10 11 B2 RE D 9 5 PL3 5BL U 4Y EL 3VI O 2O R N 1R E D RE D OR N VI O YEL WH T BL K RE D OR N V...
Page 15 - SERVICE TRAINING; • Unit Familiarization
Fig. 16—Wiring Diagram A94328 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theo...