Vent Fitting
& Clamps
5/8" Hose & Clamps --
Plastic
Caps
Condensate
Trap & Gasket
LEFT Side Venting
Supply Air
Upflow Installations (Single Pipe & Direct Vent NgMP1 & NgMP2 Models)
RIGHT Side Venting
Combustion
/ Air Pipe, /1
NgMP2 ONLY _ Supply Air _
Rubbe_
P,ug
Transition Box
Plastic
Caps
Combustion Blower
180° for
Left Side)
Pressure Hose,
Blower
Pressure Switch,
Blower
Pressure Switch
Hose, Transition
Pressure Switch,
Transition
DRAIN SIDE VIEW
_ ombustion
Air Pipe,
NgMP2 ONLY
Combustion
Blower
Mounting
3/4" Hose & Clamps
dwg 25-23-57
Upfl0wInstallations-
Mount the condensate drain trap in a vertical position to either the
left or right side of the furnace using the two screws and gasket
that are provided. 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.
(Single Pipe & DirectVent NgMP1& NgMP2 Models) (See Figure 12)
For left side mounted condensate trap, connect the 3/4" OD rub-
ber 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
off excess hose and discard. Connect the hose to the drain stub
on the trap and secure with a 8/4" clamp.
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, with the drain stub at a 20 ° to
30 ° downward slope.
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. Remove the four(4) screws that se-
cure the blower to the transition. Rotate the blower 180 ° and se-
cure with the four(4) screws. Use caution to not over tighten the
screws to prevent stripping out of the plastic mounting holes.
Plug the upper drain stub of the vent fitting with the rubber plug.
Use a blunt pointed screwdriver to push the plug into the stub.
For right side mounted condensate trap, the rigid plastic drain
tube MUST be used. Cut two 2" long sections from the 3/4" OD
rubber hose. Connect the plastic drain tube to the drain stub on
the bottom of the plastic transition box and to the stub on the con-
densate trap using the two hose sections and 8/4" clamps.
NOTE: The support leg on the plastic drain tube MUST be posi-
tioned on the blower partition.
Connect the 5/8" OD rubber hose with the 90 ° bend to the lower
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 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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