ICP N9MP1 Service Manual page 30

Service Manual
Figure 37 Upflow Installations (Single Pipe & Direct Vent N9MP1 & N9MP2(A1) Models)
Supply Air
Vent Pipe
Vent Pipe
Grommet
Vent Fitting
& Clamps
5
/ ² ² ² ² Hose & Clamps
8
Plastic
Caps
Condensate
Trap & Gasket
Drain Line
Upflow Installations -
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 furnace
side panel and relocate to the open set of holes in the opposite side
7
panel. Drill two / ² diameter holes in the casing using the conden-
64
sate 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, 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 secure
the blower to the transition. Rotate the blower 180° and secure with
the four(4) screws. Use caution to not over tighten the screws to pre-
vent 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.
440 08 2001 02
LEFT Side Venting
Rubber
Plug
Transition Box
3
/ ² ² ² ² Hose & Clamps
4
(Single Pipe & Direct Vent N9MP1 & N9MP2 Models) (See Figure 37)
Combustion
Air Pipe,
N9MP2 ONLY
Plastic
Caps
Combustion Blower
(Rotate 180° ° ° ° for
Left Side)
Pressure Hose,
Blower
Pressure Switch,
Blower
Pressure Switch
Hose, Transition
Pressure Switch,
Transition
DRAIN SIDE VIEW
Rotate
Return
downward
Air
20° to 30°
For left side mounted condensate trap, connect the
hose with the 90° bend to the drain stub on the bottom of the plastic
transition box and secure with a
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
For right side mounted condensate trap, the rigid plastic drain
tube MUST be used. Cut two 2² long sections from the
ber hose. Connect the plastic drain tube to the drain stub on the bot-
tom of the plastic transition box and to the stub on the condensate
trap using the two hose sections and
NOTE: The support leg on the plastic drain tube MUST be posi-
tioned on the blower partition.
Connect the
drain stub on the vent fitting and secure with a
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
NOTE: Ensure hoses maintain a downward slope to the conden-
sate trap with no kinking or binding for proper condensate drainage.
28
Single Stage Multi Position Furnace
RIGHT Side Venting
Supply Air
Rigid Plastic
Drain Tube
clamp
Rubber
Hose
clamp
Rigid
Plastic
Drain
Rubber
Tube
Hose
dwg 25--23--57
3
/ ² clamp.
4
3
/ ² clamp.
4
3
/ ² clamps.
4
5
/ ² OD rubber hose with the 90° bend to the lower
8
5
/ ² clamp.
8
Combustion
Air Pipe,
N9MP2 ONLY
Combustion
Blower
Mounting
Screws (4)
Return
Air
3
/ ² OD rubber
4
3
/ ² OD rub-
4
5
/ ² clamp.
8