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VentFitting
&Clamps
PVCVent /
Extension
Pipe
Downflow Installations (Single Pipe & Direct Vent N9MP1 & N9MP2-A2 Models)
LEFT Side Ventinq,_
ReturnAir
CombustionBlower
Mountin! ;crews(4)
- 314"Hose&Clamps
SupplyAir
<Z>
Pressure Switch
Hose,Transition
j Transition Box
Pressure
Switch
Pressure Switch
Hose,Blower
Tral
/_-_PPointed
Preassemble&
insertintofurnace
RIGHT Side Venting
ReturnAir
CombustionBlower
(Rotate 180° for Left Side)
Pressure
Switch, SomeModels
Transition
pressureswitch
SupplyAir
<Z>
Representive drawing, some
valves will vary.
Airlntake
Combustion
Air Pipe,
PVCVent
Extension
Pipe
Yellow Vent Fitting
&Clamps
DRAIN SIDE Rotate
5° to 10°
_uilt-inchannelwill
dwg 25-24-04 be angled 5° to 10° als0.
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
Downflow Installations - (Single Pipe & DirectVent N9MP1
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 10). 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 condensate trap
into position. Secure with the two screws. Reconnect the drain
hoses to the stubs on the vent fitting and the plastic transition and
secure with the clamps.
Mount the condensate drain trap in a vertical position to either the
right or left side of the furnace using the two screws and gasket that
are provided. 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.
Ensure that the vent fitting is securely attached to the combustion
blower using the rubber coupling and clamps.
N9MP2 Models) (SeeFigure10)
Connect the PVC vent extension pipe to the vent fitting. This pipe
has a built-in channel to assist vent condensate disposal.
Align the arrow on the PVC pipe with the airflow marking arrow on
the vent fitting. See label on the PVC pipe for proper installation.
This pipe may only be shortened if an elbow is used to connect the
PVC vent extension tube to field-installed vent pipe. Securely at-
tach the PVC vent extension pipe to the vent fitting with the clamp.
This configuration allows left side venting from the furnace. If right
side venting is required, the combustion blower must be relocated
on the plastic transition box. Loosen the four(4) screws that secure
the blower to the transition approximately1/2 ". Rotate the blower
180 ° and secure with the four(4) screws. Note that some combus-
tion blowers have plastic spacers on the mounting legs of the blow-
er located atthe 6 and 12 o'clock positions (blower snout to the left
or right) that are required for proper fit up of the blower to the transi-
tion. Use caution to not over tighten the screws to prevent stripping
out of the plastic mounting holes.
NOTE: The vent fitting MUST be installed with the airflow marking
arrow pointed toward the vent pipe, with the drain stub at a 5 ° to 10 °
downward slope.
441 06 1039 00 - 12 -
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