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Section 12. Condensate Drain Piping
12.1 Condensate Drain Piping Considerations
•
Condensate drain plumbing must comply with na-
tional, state, and local codes.
•
Route condensate drain lines away from air handler
so they do not interfere with access panels.
•
Slope the drain lines downward a minimum of 1/4"
per foot, support per local codes.
•
Do not use reducing fittings in the condensate drain
lines.
12.2 Connect Condensate Drain Piping
STEP 1 - Select the drain connections that are ori-
ented for your application.
STEP 2 - Prepare the condensate drain connections.
•
From the factory, the unit comes with plugs in both
upflow condensate drains and an additional plug in
the documentation packet.
•
For upflow applications, remove upflow condensate
plug(s) and connect condensate piping.
•
For all other applications, do not remove upflow
condensate plugs. Remove the cover from the
needed condensate drain connections and connect
condensate piping.
•
If the secondary drain connection is not used, close
secondary drain with plug from documentation
packet (all applications except for upflow).
Note: Upflow and horizontal orientations require the
Coil panel to be removed in order to make the drain
connections. Note: Make certain that the unit has
been installed in a level position to allow for proper
draining.
STEP 3 - Connect 3/4" PVC pipe to the primary drain
connection (and the secondary drain connection if
used) using threaded drain nipples.
•
Use Teflon tape on the air handler drain line con-
nections. Do not use pipe joint compound or PVC/
CPVC cement on drain nipple.
•
Hand tighten the drain pipe.
26
•
Do not connect the drain line to a closed drain
system.
•
Do not use a torch or flame near the plastic drain
pan coupling.
•
A P-trap is not required for proper drainage due to
the positive pressure of the air handler; however,
it is recommended to prevent efficiency loss of
conditioned air.
Downflow
Condensate
Drains
Upflow
Condensate
Drains
S
P
Teflon Tape
Drain Nipple
3/4" PVC pipe
PVC
CEMENT
PVC/CPVC Cement
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