Single Stage Multi Position Furnace
Service Manual
36
440 08 2001 02
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
²
clamp.
NOTE: Ensure hoses maintain a downward slope to the conden-
sate trap with no kinking or binding for proper condensate drainage.
Figure 45
Downflow Installations (Dual Certified *9MPD--A2 Models)
dwg 25--23--56
RIGHT Side Venting
Return Air
LEFT Side Venting
Return Air
Some Models
have one
pressure switch
Ex
ha
us
t
Inle
t
Ex
ha
us
t
Inle
t
Vent Pipe
Combustion
Air Pipe, (Optional)
Air Intake
Coupling
Vent Pipe
Grommet
Vent Fitting
& Clamps
Plastic Caps
Condensate
Trap & Gasket
Supply Air
Drain Line
Gas Pipe Grommet
Supply Air
Plastic
Cap
Combustion Blower
(Rotate 180
°°°°
for Left Side)
Pressure Switch,
Transition
Transition
Box
Yellow
Plastic Cap
Pressure Switch
Hose, Transition
Pressure
Switch,
Blower
Pressure
Switch
Hose,
Blower
5
/
8
²²²²
Hose &
Clamps
3
/
4
²²²²
Hose
& Clamps
DRAIN SIDE VIEW
Rotate downward
20
°°°°
to 30
°°°°
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
Preassemble
and insert
into furnace
Trap Connection
“Clamp ears”
Pointed OUT
AI
R
F
LO
W
Combustion Blower
Mounting Screws (4)
Downflow Installations - (Dual Certified *9MPD Models
)
(See Figure 45)
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 45).
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
right or left side of the furnace using the two screws and gasket that
are provided. If needed, remove the hole plugs from the furnace