Routing Options; Exhauster Rotation Instructions & Pressure Switch Mounting - Napoleon NBM030S2A Installation And Operating Instructions Manual

11.0

ROUTING OPTIONS

This furnace can be installed in any of three positions. Figures 16-18 on the following pages show the three
positions. The installer must consider the following services: gas pipe, electrical power, drain trap,
intake and exhaust vents. Also consider the air conditioning connections and drain, access to fi lter(s)
and access to furnace and a/c for repair. Drains and traps of furnaces installed in spaces subjected
to freezing temperature must also be protected against freezing.
The combustion air inlet fi tting is a 2" PVC Socket to Pipe Thread adapter. Choose the intake
location and remove the appropriate plastic cap, if applicable. Install the adapter to the exterior panel
using the locknut on the inside of the panel, and the gasket on the outside of the panel to create an
air tight seal. Failure to apply the gasket on the cabinet exterior voids the warranty.
11.1 EXHAUSTER ROTATION INSTRUCTIONS & PRESSURE SWITCH
MOUNTING
1. Disconnect exhauster wire connection (L1 and Neutral).
2. Remove the 3 exhauster screws.
3. Remove pressure switch assembly.
4. Remove exhauster.
5. Reverse the bands on the rubber drain coupling so the screws are accessible if necessary. (Do not
reverse the drain coupling.) Confi rm that directional arrow on drain coupling points away from exhauster.
6. Remove the appropriate plastic cap on the side panel. Install cap on vent opening not in use.
7. Reinstall the exhauster and the pressure switch assembly in the correct orientation with the (3) exhauster
screws removed in step 2. Reinstall the pressure switch so that it is above the heat exchanger drain,
to eliminate the chance of condensate draining into the pressure switch sensing hose causing erratic
furnace operation. See Figures 16-18 for reference.
8. Rotate the drain coupling so the drain holes are angled downward 15° and tighten coupling band to
exhauster.
9. Complete the venting as installation requires.
Always secure or support the vent and intake to the fl oor joists or rafters to avoid sagging and possible fatigue
of venting materials. This ensures proper drainage and prevents spilling the products of combustion into the
building.
The blower compartment should be completely isolated from the burner compartment, and in tight rooms with
other combustion devices, be completely isolated from the room. Ensure that the combustion door gasket is in
good condition.
IMPORTANT:
KEEP PRESSURE SWITCH HOSES ABOVE HEAT EXCHANGER DRAIN, AND CUT TO
APPROPRIATE LENGTH TO PREVENT ANY SAGS OR TRAPS FORMING IN THE HOSES.
TABLE 5 - EXHAUSTER ORIENTATION
FLUE
FURNACE
OUTLET
Up Left
Up Right
Up Vertical
Horizontal Left Left
Horizontal Left Vertical
Horizontal Right Right
Horizontal Right Vertical
KIT
EXHAUSTER
REQUIRED
Yes No
Yes No
SEE FIGURES
16-18 FOR
No No
RECOMMENDED
MOUNTING
No Yes
Yes Yes
No Yes
Yes Yes
H12.5.1
29
H16.0.2
H16.1.1
W415-1117 / A / 03.11.14
IOM