Horizontal Right Installations (Single Pipe & Direct Vent N9MP1 & N9MP2 Models)
Transition Box Vent Pipe
Caps Vent Fitting Combustion
Air Pipe,
NgMP2 ONLY
Return
Air
5/8" Hose &
Clamps _
Mounting Screws (4)
PressureSwitch _ Supply
Hose, Blower Air
J
Plastic 3/4" Hose
Caps Pressure Hose, Transition & Clamps
Switch, Transition
Condensate
Trap & Gasket
Drain Line
Pressure
Switch, Blower
dwg 25-23-59
HorizontalRight Installations- (Single Pipe&
Figure14)
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. Drill two 7/64" diameter holes in the casing using
the condensate trap as the template.
Ensure that the vent fitting and the 90 ° elbow 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 rubber plug. Use
a blunt pointed screwdriver to push the plug into the stub.
Remove the pressure switch hose from the upper stub on the
plastic transition box.
Relocate the plastic caps on the stubs of the plastic transition from
the lower stubs to the upper stubs and secure tightly with the
clamps.
DirectVent NgMP1& NgMP2Models)(See
Route the hose to the large drain stub on the condensate trap. Cut
oft excess hose and discard. Connect the pressure switch hose
to the lower stub on the plastic transition box. NOTE: Failure to
correctly install the pressure switch hose to the transition can ad-
versely affect the safety control operation.
Connect the 3/4" OD rubber hose with the 90 ° bend to the drain
stub on the bottom of the plastic transition box and secure with a
3/4" clamp.
Route the hose to the large drain stub on the condensate trap. Cut
oft excess hose and discard. Connect the hose to the drain stub
on the trap and secure with a 3/4" clamp.
Connect the 5/8" OD rubber hose with the 90 ° bend to the right s-
tub on the vent fitting and secure with a 5/8" clamp.
Route the hose to the smaller drain stub on the condensate trap.
Cut oft excess hose and discard. Connect the hose to the drain
stub on the trap and secure with a 5/8" clamp.
NOTE: Ensure hoses maintain a downward slope to the conden-
sate trap with no kinking or binding for proper condensate drain-
age.
440 01 101004 [_
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