22
440 01 2020 01
Figure 17
Connecting Tee Trap to Condensate Trap and Main Drain Line
Exhaust
Inle
t
Open Tee
Tee Trap
Condensate
Trap
Evaporator Coil
Drain Line (Op-
tional)
Main Drain Line
25--24--41N
The Tee Trap must be connected to the main condensate drain
line as conceptually shown above. Different installations may
require slightly different orientations. The following steps apply
to all installations.
1. The Tee Trap should be installed as close to the side or top of
the furnace as practical. Minimize the distance between the
inducer and the Tee Trap as much as possible.
2. An open tee is to be used at the Tee Trap discharge. The top
end of the tee should be open to the atmosphere to eliminate
potential air lock problems.
3. The drain line from the Tee Trap is to be connected to the fur-
nace condensate trap drain line as shown above.
4. Condensate drain lines from a cooling coil may be con-
nected downstream of the connection point of the Tee Trap
and Furnace Condensate Trap.
Important: Prime both traps with water before operation.
Failure to prime the traps may result in discharge of flue gases
from the condensate drain line and open tee for a period of time,
and may result in temporary lockout of the furnace upon start
up. Main drain line construction is left to the discretion of the
installer. It may be made of either ridged pipe or flexible tube.
Tube ID should NOT be less than
1
/
2
²
.
Connecting Vent and Combustion Air Piping
CARBON MONOXIDE POISONING HAZARD
Failure to properly seal vent piping can result in death,
personal injury and/or property damage.
Cement or mechanically seal all joints, fittings, etc. to
prevent leakage of flue gases.
!
Refer to
Figure 8
through
Figure 16
that corresponds to the instal-
lation position of the furnace for the application.
Preassemble the vent and combustion air piping from the furnace
to the vent termination. Do not cement the pipe joints until the pipe
preassembly process is complete.
Combustion Air Pipe Connection (
Dual Certified or
Direct Vent)
Install the air intake coupling and gasket to the furnace with the
four(4) screws.
Note: The air intake coupling and gasket can be installed to the top
panel to the alternate air intake locations on either the left or right
side panels of the furnace.
For downflow installation, the air intake coupling and gasket must
be installed to the alternate air intake location on either the left or
Summary of Contents for 9MPT050F12A
Page 46: ...46 440 01 2020 01...
