Sears N9MP2, N9MP1, 9MPD manual Cap, Return, Air Clamps, Modelsshownhave Twopressureswitches

Horizontal Right Installations (Single Pipe & Direct Vent N9MP1 & N9MP2-A4 Models)

		Vent	Fitting
NOTE: TRAP MUST BE PRIMED BEFOREPlasticOPERATIONveniipls_lv_		& Clamps
			Combustion
Cap			Air Pipe,
\	\ \		N9MP2 ONLY

%

518" Hose &\

Return

Air

Clamps _

Inlet

					Supply
					Air
Modelsshownhave__
twopressureswitches
					dwg 25-23-59a
Horizontal Trap Connection					Pressure	Switch
		Plastic	Pressure	3/4"
					Hose
"Clamp	ears"	Cap	Switch, Transition		Hose,	Transition
					ps
Pointed	OUT
		Condensate
		Trap &	Gasket	Switch,	Blower
	Preassemble
	and	insert	Drain	Line

into furnace

Connections on all

models except 125

Single Pressure Switch

Horizontal Right Installations - (Single Pipe & Direct Vent N9MP1 & N9MP2 Models) (SeeFigure16)

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 16). 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 stub 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 right 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 right side. If needed, remove the hole plugs from the fur- nace side panel and relocate to the open set of holes in the oppo- site side panel.

NOTE: All gaskets and seals must be in place for sealed combus- tion applications.

Ensure that the vent fitting is securely attached to the combustion blower using the 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.

Remove the pressure switch hose from the upper stub on the plastic transition box.

Relocate the plastic ca ps on the stubs of the plastic transition from the lower stubs to the upper stubs and secure tightly with the clamps.

Route the pressure switch hose to the lower stub on the plastic transition box. Cut off excess hose and discard. Connect the

pressure switch hose to the lower stub on the plastic transition box. Ensure that the hose is routed above the stub on the transi- tion box so that condensate does not collect in the hose. NOTE:

Failure to correctly install the pressure switch hose to the transi- tion can adversely affect the safety control operation.

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