ICP N9MP1 Service Manual page 34

Service Manual
Figure 41
Upflow Installations (Dual Certified *9MPD- - A2 Models)
Yellow Plastic Cap
Vent Fitting
& Clamps
Combustion Blower
Mounting Screws (4)
Combustion Blow-
er
Trap Connection
Condensate Trap & Gasket
(Left or Right Side)
Upflow Installations -
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 41). 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.
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
panel.
NOTE: All gaskets and seals must be in place for sealed combus-
tion applications.
440 08 2001 02
Vent Pipe
Supply
Air
Rubber Coupling &
Clamps
Vent Pipe Grommet
11² ² ² ² Section PVC Pipe
Gas Pipe
Grommet
90° ° ° ° Street
Elbow
5
/ ² ² ² ² Hose &
8
Clamps
Plastic Cap
"Clamp ears"
Pointed OUT
Preassemble &
insert into furnace
(Dual Certified *9MPD)(See Figure 41)
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
TOP Venting
3
/ ² ² ² ² Hose
4
& Clamps
Transition
Box
Pressure Switch,
Transition
Drain Line
Ensure that the vent fitting and the 90° street elbow are securely at-
tached to the combustion blower using the clamps.
Plug the upper drain stub on the vent fitting with the yellow plastic
cap.
Glue the 11² section of PVC pipe to the 90° street elbow after check-
ing the fit up. (Follow the procedures outlined in the Joining Pipe and
Fittings section of this manual, page 30.) The PVC pipe will extend
through the top panel about 1
the end of the 11² section of PVC pipe using the clamp.
Note: There will be some misaligment of the PVC pipe inside the fur-
nace. The rubber coupling will straighten out the misalignment at
the vent pipe connection at the top of the furnace.
For left side venting, remove 90° street elbow from the vent fitting by
loosening the clamp on the vent fitting. Securely attach vent fitting to
combustion blower.
NOTE: For left side venting, 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.
32
Single Stage Multi Position Furnace
Combustion Air
Pipe (optional)
Air Intake
Coupling
Plastic Cap
Some Models have
one pressure switch
Pressure Switch
Hose, Blower
Pressure Switch, Blower
Pressure Switch
Hose, Transition
Return Air
1
². Connect the rubber coupling to
/2
25--24--00a