Single Stage Multi Position Furnace
Service Manual
17
440 08 2001 02
Combustion
Air
Vent
Combustion
Air
Figure 24
Concentric Vent Sidewall
Attachment
3
²
x 2
²
Bushings or
3
²
x 2
1
/
2
²
Bushings
If 3
²
vent not used
(Field supplied)
Vent
45
°
Elbow
(Field Supplied)
25--22--02
Strap
(Field Supplied)
Flush to
1
²
max.
Note:
Securing strap must be field installed to prevent movement of termination kit
in side wall.
19. EXHAUST BLOWER
Figure 25
Exhaust Blower
11
²²²²
Section PVC pipe
Rubber Coupling
& Clamps
90
°°°°
Street
Elbow
Combustion
Blower
Vent Fitting
& Clamps
25--23--35
DRAIN SIDE VIEW
Rotate downward
20
°°°°
to 30
°°°°
Vent Pipe
(Side Panel EXit)
Vent Pipe
(Top Panel Exit)
20. CONDENSATE DRAIN TRAP
The removal of additional heat from the flue products which
takes place in the secondary heat exchanger (condenser)
causes them to drop below their dew point resulting in con-
densation. This condensation (water) then must be drained
from the furnace, and routed to a remote drain, or conden-
sate pump.
The combustion blower creates a negative pressure in ex-
cess of 2
²
W.C. while operating. Without a condensate drain
trap of sufficient depth, condensate would be held in the fur-
nace, (because of this negative pressure), and not be able
to drain.
Figure 26
shows the transition assembly, which is
mounted between the combustion blower and the front parti-
tion.
The condensate drain trap supplied with the furnace MUST
be used. The drain line between the condensate drain trap
and the drain location must be constructed of
3
/
4
²
PVC or
CPVC pipe.
In standard
Upflow, Counterflow and/or horizontal
installations
, the external drain trap provides sufficient
depth (4
²
) to insure proper drainage of condensate from the
furnace. Additional traps are NOT required, and should NOT
be used. The use of additional traps will PREVENT proper
drainage of condensate from the furnace. Care should be
taken with the routing of the condensate drain hose, to elimi-
nate all dips or sagging tubing which can create another trap,
and cause drainage problems.