Heat Controller CDG SERIES Manuel D’Utilisation

Cased/Uncased Coils 

INSTALLATION INSTRUCTIONS

 

Heat Controller, Inc.

9

Drain pan has two drain connections on each side to provide flexibility 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 overflow 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 fitting. 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 figure 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