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Horizontal Left Installations (Single Pipe & Direct Vent N9MP1 & N9MP2-A2 Models)
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
VentPipe
/ VentFitting
l Clamps
S)
.c
x
uJ
Vent P
Supply
Air
> Inlet
/
Combustion
AirPipe,
N9MP2ONLY
L_
CombustionBtowel
(Rotate 180° for Right Side)
Representive drawing, some valves will vary.
MountingScrews(4)
Vent Fitting& Clamps
PressureSwitch Hose, Transition
Transition
one pressureswitch
Blower
PressureSwitch Hose,Blower
TransitionBox
518"Hose& Clamps
' Hose & Clamps
Return
Air
Horizontal Left Installations- (SinglePipe & DirectVent
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 8). 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.
Relocate the plastic caps and clamps on the condensate drain trap
from the vertical drain stubs to the horizontal drain stubs. Secure
the clamps tightly to prevent condensate leakage.
Mount the condensate drain trap in a vertical position to the left side
of the furnace using the two screws and gasket that are provided.
Note: The condensate trap will be located under the furnace in a
vertical position when the furnace is placed horizontally on the left
side. 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.
Relocate the combustion blower on the plastic transition box. Re-
move the four(4) screws that secure the blower to the transition
box. Rotate the blower 180 ° so the blower snout is pointing up and
DrainLine
PlasticCap
Trap &Gasket
dw_ 25-23-58
Horizontal Trap Connection
"Clampears"
PointedOUT
semble
sert
intofurnace
NgMP1 & NgMP2 Models) (See Figure 8)
secure with the four(4) screws. Note that some combustion blow-
ers have plastic spacers on the mounting legs of the blower located
at the 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 transition. Use
caution to not over tighten the screws to prevent stripping out of the
plastic mounting holes.
Ensure that the vent fitting 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 yellow plastic cap.
Connect the 3/4" OD rubber hose with the 90 ° bend to the large
drain stub on the condensate trap and secure with a 3/4" clamp.
Route the hose to the drain stub on the bottom ofthe plastic transi-
tion box. Cut off excess hose and discard. Connect the hose to the
drain stub on the transition and secure with a 3/4" clamp.
Connect the 5/8" OD rubber hose with the 90 ° bend to the right drain
stub on the vent fitting and secure with a 5/8" clamp.
Route the hose to the smaller drain stub on the condensate trap.
Cut off excess hose and discard. Connect the hose to the drain
stub on the vent fitting and secure with a 5/8" clamp.
NOTE: Route hoses to the condensate trap with no kinking or bind-
ing for proper condensate drainage.
441 06 1039 00 - 10 -
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