ICP N9MP1 Service Manual

Also see for C9MPD: User's information manual User's information manual Installation instructions

ICP N9MP1 Service Manual Manual pdf 19 page image

Single Stage Multi Position Furnace Service Manual17 440 08 2001 02CombustionAirVentCombustionAirFigure 24 Concentric Vent SidewallAttachment3² x 2² Bushings or3² x 2 1 /2² BushingsIf 3² vent not used(Field supplied)Vent45° Elbow(Field Supplied)25--22--02Strap(Field Supplied)Flush to1² max.Note:Securing strap must be field installed to prevent movement of termination kitin side wall.19. EXHAUST BLOWERFigure 25 Exhaust Blower11²²²² Section PVC pipeRubber Coupling& Clamps90°°°° StreetElbow CombustionBlowerVent Fitting& Clamps25--23--35DRAIN SIDE VIEWRotate downward20°°°° to 30°°°°Vent Pipe(Side Panel EXit)Vent Pipe(Top Panel Exit)20. CONDENSATE DRAIN TRAPThe removal of additional heat from the flue products whichtakes place in the secondary heat exchanger (condenser)causes them to drop below their dew point resulting in con-densation. This condensation (water) then must be drainedfrom the furnace, and routed to a remote drain, or conden-sate pump.The combustion blower creates a negative pressure in ex-cess of 2² W.C. while operating. Without a condensate draintrap of sufficient depth, condensate would be held in the fur-nace, (because of this negative pressure), and not be ableto drain. Figure 26 shows the transition assembly, which ismounted between the combustion blower and the front parti-tion.The condensate drain trap supplied with the furnace MUSTbe used. The drain line between the condensate drain trapand the drain location must be constructed of 3/ 4² PVC orCPVC pipe.In standard Upflow, Counterflow and/or horizontalinstallations, the external drain trap provides sufficientdepth (4²) to insure proper drainage of condensate from thefurnace. Additional traps are NOT required, and should NOTbe used. The use of additional traps will PREVENT properdrainage of condensate from the furnace. Care should betaken with the routing of the condensate drain hose, to elimi-nate all dips or sagging tubing which can create another trap,and cause drainage problems.