ICP N9MP1 Service Manual page 36

Service Manual
Figure 43 Horizontal Left Installations (Dual Certified *9MPD- -A2 Models)
Combustion Air
Pipe, (optional)
Air Intake
Vent Pipe
Coupling
Supply
Air
Yellow
Plastic
Cap
Vent Fitting
& Clamps
Vent Pipe
Grommet
Condensate
Trap & Gasket
Horizontal Left Installations - (Dual Certified *9MPD)
Note: For easier installation of the drain hoses and clamps to the
condensate trap, follow the directions outlined below except do not
make any clamp connections to any of the drain stubs and hoses
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 43). 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 cap and clamp on the condensate drain trap
from the vertical transition drain stub to the horizontal transition
drain stub. Secure the clamps tightly to prevent condensate leak-
age. Do not change the cap and clamp on the vent drain stub.
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 ver-
tical position when the furnace is placed horizontally on the left side.
If needed, remove the hole plugs from the furnace side panel and
relocate 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.
Remove the 90° street elbow and vent fitting from the combustion
blower by loosening the clamps on the vent fitting. Connect the 90°
street elbow to the combustion blower using the rubber coupling
and clamps. Glue the 11² section of PVC pipe to the 90° street elbow
af ter checking the fit up. (Follow the procedures outlined in the Join-
440 08 2001 02
Some Models
have one
pressure switch
Pressure Switch
Hose, Blower
Plastic Cap
11² ² ² ² Section
PVC Pipe
Plastic
5
/ ² ² ² ² Hose
8
Cap
& Clamps
Drain
Line
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
Pressure Switch,
Transition Box
Blower
Rubber Coupling & Clamps
90° ° ° ° Street
Elbow
Gas Pipe
Grommet
(See Figure 43)
ing Pipe and Fittings section of this manual, page 30.) The PVC pipe
will extend through the top panel about 1
ting to the end of the 11² section of PVC pipe using the clamp.
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 yellow plastic
cap.
5
Connect the /
drain stub on the vent fitting and secure with a
Route the hose to the horizontal drain stub on the condensate trap.
Cut off excess hoses and discard. Connect the hose to the drain
stub on the condensate trap and secure with a
3
Connect the /
4
stub on the condensate trap and secure with a
Route the hose to the drain stub on the bottom of the plastic transi-
tion box. Cut off excess hose and discard. Connect the hose to the
drain stub on the transition and secure with a
The pressure tap on the condensate trap MUST be connected to
the unused pressure tap located on the top of the plastic transition
box. Remove the plastic caps from the pressure taps on the con-
densate trap and the plastic transition and connect with the
rubber hose.
NOTE: This will require drilling a
next to the condensate trap.
NOTE: Ensure hoses maintain a downward slope to the conden-
sate trap with no kinking or binding for proper condensate drainage.
34
Single Stage Multi Position Furnace
Pressure Switch,
Transition
Combustion
Blower
Combustion Blower
Mounting Screws
(4)
Pressure Switch Hose,
Transition
3
/ ² ² ² ²
4
Hose & Clamps
Horizontal Trap Connection
1
/2
² OD rubber hose with the 90° bend to the lower
8
² OD rubber hose with the 90° bend to the large drain
5
² OD hole in the furnace casing
/16
Return
Air
dwg 25--24--00b
"Clamp ears"
Pointed OUT
Preassemble and
insert into furnace
². Connect the vent fit-
5
/ ² clamp.
8
5
/ ² clamp.
8
3
/ ² clamp.
4
3
/ ² clamp.
4
5
² OD
/16