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Cased/Uncased Coils INSTALLATION INSTRUCTIONS Heat Controller, Inc.
9
Drain pan has two drain connections on each side to provide exibility of connection and drainage. Make
sure pan has proper pitch and plugged if second connection is not used.
It is highly recommended to use the secondary drain line to prevent overow when the primary drain is
plugged.
NOTE: Water coming from this line means the coil primary drain is plugged and needs clearing.
Install a trap in the drain line below the bottom of the drain pan (required). If using a copper drain line,
solder a short piece of pipe to the connector before installing a drain tting. DO NOT over torque the 3/4”
copper connector to the plastic drain connection. Use a wet rag or heatsink material on the short piece to
protect plastic drain pan, complete the drain line installation (Fig.5). Use (Fig.6) as a template for typical
drain pipe routing. This gure shows how to avoid interference with vent piping.
CONDENSATE DRAIN TRAP
Unit
DO NOT OVERTIGHTEN DRAIN FITTING
TOWARD DRAIN CONNECTION
UNIT MUST BE SLIGHTLY INCLINED
3"
3"
TO
APPROVED DRAIN
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP.
secondary
primary
secondary
primary
Fig. 5: Drain Line Installation
Fig. 6: Drain Pipe Routing