Horizontal Left Installations (Single Pipe N9MP1 & Direct Vent
VentFitting
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
tPipe & Clamps
Models shown have
two pressure switch
_._lasticCap
Supply _
Air,_
_> Inlet
/2_
Combustion
AirPipe,
N9MP2ONLY
Single Pressure Switch Connections on all models except 125
Vent Fitting&Clamps
Transition
Return
Air
518" Hose & Clamps
"Hose & Clamps
) Connection
"Clamp ears" , Pointed OUT
Condensate
Trap & Gasket
Drain Line
and insert
_L,into furnace
V
Horizontal Left Installations - (Single Pipe & Direct Vent N9MP1 & N9MP2 Models) (See Figure 15)
NOTE: DO NOT make hose connections until the hose routing and lengths have been determined. Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps (position the clamps as shown in Figure 15). Install the condensate trap/hose assembly to the furnace casing. Hook one side of the "clamp ears" on the drain stub through the hole in the casing and push the con- densate trap into position. Secure with the two screws. Recon- nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps.
Relocate the plastic caps and clamps on the condensate drain trap from the vertical drain stubs to the horizontal drain stubs. Se-
cure the clamps tightly to prevent condensate leakage.
Mount the condensate drain trap in a vertical position to the left side of the furnace using the two screws and gasket that are pro-
vided. Note: The condensate trap will be located under the fur- nace in a vertical position when the furnace is placed horizontally on the left side. If needed, remove the hole plugs from the furnace side panel and relocated to the open set of holes in the opposite side panel.
NOTE: All gaskets and seals must be in place for sealed combus- tion applications.
Relocate the combustion blower on the plastic transition box. Re- move the four(4) screws that secure the blower to the transition
box. Rotate the blower 180 ° so the blower snout is pointing up and secure with the four(4) screws. Note that some combustion blow-
ers have plastic spacers on the mounting legs of the blower lo- cated at the 6 and 12 o'clock positions (blower snout to the left or right) that a re required for proper fit up of the blower to the transi- tion. Use caution to not over tighten the screws to prevent strip- ping out of the plastic mounting holes.
Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps.
NOTE: The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe.
Plug the left drain stub on the vent fitting with the yellow plastic cap.
Connect the 3/4" OD rubber hose with the 90 ° bend to the large drain stub on the condensate trap and secure with a 3/4' , clamp.
Route the hose to the drain stub on the bottom of the plastic transi- tion box. Cut off excess hose and discard. Connect the hose tothe
drain stub on the transition and secure with a 3/4" clamp.
Connect the 518" OD rubber hose with the 90 ° bend to the right drain stub on the vent fitting and secure with a 518" clamp.
Route the hose to the smaller drain stub on the condensate trap. Cut off excess hose and discard. Connect the hose to the drain
stub on the vent fitting and secure with a 5/8" clamp,
NOTE: Route hoses to the condensate trap with no kinking or binding for proper condensate drainage.
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