ICP N9MP1 Service Manual page 28

Service Manual
Figure 35 Horizontal Right Installations (Dual Certified *9MPD(A1) Models)
5
/ ² ² ² ² Hose & Clamps
8
Combustion
Blower
Return
Air
Combustion Blower
Mounting
Screws (4)
Pressure Switch, Transition
Horizontal Right Installations - (Dual Certified *9MPD
Relocate the plastic caps and clamps on the condensate drain trap
from the vertical drain stub to the horizontal drain stubs. Secure 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 furnace
in a vertical position when the furnace is placed horizontally on the
right side. If needed, remove the hole plugs from the furnace side
panel and relocated 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.
Connect the vent fitting and the 90° elbow 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.
Plug the upper 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.
440 08 2001 02
Rubber Coupling & Clamps
90° ° ° ° Elbow
Plastic Caps
Pressure Switch
Hose, Transition
Plastic Caps
Condensate Trap
& Gasket
Drain Line
Vent Pipe
Vent Fitting
& Clamps
Rubber Plug
Transition Box
Pressure Switch
Hose, Blower
Pressure Switch,
Blower
3
/ ² ² ² ² Hose & Clamps
4
) (See Figure 35)
Relocate the plastic caps on the stubs of the plastic transition box
from the lower stubs to the upper stubs and secure tightly with the
clamps.
Route the pressure switch hose to the lower stub on the plastic tran-
sition box. Cut off 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 adversely affect the safety control operation.
3
Connect the / ² OD rubber hose with the 90° bend to the drain stub
4
on the bottom of the plastic transition box and secure with a
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
5
Connect the / ² OD rubber hose with the 90° bend to the lower
8
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.
26
Single Stage Multi Position Furnace
Gas Pipe
Grommet
Supply
Vent Pipe
Grommet
Air Intake
Coupling
DRAIN SIDE VIEW
Rotate downward
20° to 30°
dwg 25--23--55
3
/ ² clamp.
4
5
5
/ ² clamp.
8
Combustion
Air Pipe
(Optional)
Air
3
/ ²
4
/ ² clamp.
8