Install Instructions
4
NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED
HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE
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any, L.P.
If you install your uncased coil on top of a gas furnace the
following is required:
Allow enough space between the top to the furnace and the
bottom of the plastic coil drain pan to have a free flow of air.
NOTE: The cased coil MUST be installed with the line set and
drain opening to the FRONT of the furnace.
There should be a minimum of 2.0" distance from the top of the
furnace and the bottom of the coil pan. See figure 3.
GAS FURNACE
FIELD FABRICATED SUPPORT
FOR UNCASED COIL
or
Bottom flange detail
can be typical of the
details below
X
X = Coil Pan Width + Insulation Thickness x 2
Coil Support
2"
FIGURE 3
The drain pan has a primary and an optional secondary drain
with 3/4" NPT female connections. The connectors required
can be 3/4" NPT male PVC pipe or metal and should be hand
tightened to a torque of approximately 37 in-lbs to prevent
damage to the drain pan connection. An insertion depth
between .355 to .485 inches (3-5 turns) should be expected at
this torque. If secondary drain line is required it must be run
separately from the primary drain and should end where it is
easily seen. Water coming from this line means the coil primary
drain is plugged and needs clearing.
A trap must be installed in the drain line below the bottom of the
drain pan. If a copper drain line is used, solder a short piece of
pipe to connector before installing a drain fitting. Again, do not
over torque the 3/4” copper connector to the plastic drain
connection. Use a wet rag or heat sink material on the short
piece to protect plastic drain pan, when completing drain line.
Refer to Figure 4.
Typical drain pipe routings can be seen in Figure 5 to avoid
interference with vent piping.
Air Handler
3" MIN.
POSITIVE LIQUID SEAL
REQUIRED AT TRAP
Drain
Connection
2" MIN.
FIGURE 4
Secondary
Primary
Secondary
Primary
Primary
Secondary
80.0% Furnace 92.6% Furnace
92.6% Furnace
FIGURE 5