Sears N8MPN075B12B1 Side Venting, Pressure Switch Relocation, Rotating the Venter Assembly

3.Newlabelsforrightside-upapplicationoutsideofblower compartmentdoormaybepurchasedinakitfromyourdistrib- utortocoverupside-downlabels.

DownflowVenting:ThecombustionventerMUSTberotatedto ventoutthesideforalldownflowinstallations,(seeFigure5).Bot- tomventingisnotpermittedSee"Sideventing"forinstructionsto. rotatetheventtothesideInadditiontorotatingtheventtotheside. aVentPipeShield(NAHAOO2VC)isrequiredtoshieldthehot ventpipe.

BURN HAZARD.

Vent pipe is HOT and could cause personal injury. Hot vent pipe is in reach of small children when installed in downflow position.

Install vent pipe shield NAHA002VC.

kinking of the pressure switch hose, trim the hose to remove ex- cess length.

Note: When drilling new holes make sure metal shavings do not fall

on or in components, as this can shorten the life of the furnace.

Typical Downflow Installation

RETURN

AIR

See side venting

Pressure Switch Relocation

If the furnace is installed in the u pflow position, the pressure switch will remain in the same position as installed by the factory unless the inducer is rotated. If the furnace is installed in an orientation

that places the pressure switch below the pressure tap on the in- ducer housing, then the switch MUST be relocated. In order to re- locate the switch, locate 2 mounting holes or drill above the inducer pressure tap. When drilling the 2 holes make sure to keep the switch and tubing far enough away from the burners or hot sur- faces as to not melt the hose, switch, or wires. To prevent possible

Combustible		floor
base	outlet	flange
adapter
Vent	Shield
Kit		MUST	BE OPPOSITE
		VENT	DISCHARGE
		SIDE
		SUPPLY
		AIR	25-23-19

3.Side Venting

This furnace is shipped from the factory with the venter assembly

in an upflow configurations (top vent). The venter assembly canFurnace with Screws

easily be rotated to a side vent configurations for use in upflow,

horizontal-flow, or downflow application.

When using a side vent configuration (side outlet instead of top outlet), it may be necessary to relocate the pressure switch to the alternate position on the opposite side of the top panel. Two screw holes are provided at the alternate position. Route the pressure switch tubing so the tubing is not kinked and not touching the hot collector box, venter housing, or motor. It may be necessary to

shorten the length of the tubing to properly route the tubing and eliminate kinks.

Rotating the Venter Assembly

1,	If gas and electrical power have already been connected to
	unit shut off gas and remove power from unit. Unscrew screws
	on burner compartment				door and remove burner			compartment
	door.	(see	Figure	6).							Venter Gasket
2, Disconnect			power	leads	to the	venter	motor and	hose	to pres-	Main Line	Entry
	sure	switch.	Remove three (3)			or four	(4) screws	which	secure

the venter to the collector box, (see Figure 7).

3, Cut webbing with a pair of snips holding the vent plate to the cabinet on either the left or right side of unit depending on right or left venting as desired. Discard vent plate, (see Figure 6).

Screws (2)

25-23-45

4, Replace venter gasket (part # 1013540, if needed) to venter assembly with adhesive in the same location as the old one.

5.Clip the wire tie for the venter wires, if needed.

6.		25-23-52c	25-23-52b
	Rotate venter assembly 90 ° right or left from original location
	depending	on venting configurations.

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