Heat Controller HDG30, HDG48, HDG60, HDG24, HDG42, HDG36 Applications, Vertical Upflow

Heat Controller, Inc. INSTALLATION INSTRUCTIONS HDG Series Air Handler

4.0Applications

4.1Vertical Upflow

•Vertical Upflow configuration is the factory set on all models (see Fig 1).

•If a side return air opening is required, field fabricate a return air plenum with an opening large enough to supply unit and strong enough to support unit weight.

•If return air is to be ducted, install duct flush with floor. Use fireproof resilient gasket 1/8 to 1/4 in. thick between the ducts, unit and floor. Set unit on floor over opening.

IMPORTANT NOTE

Torque applied to drain connections should not exceed 15.ft.lbs.(see Fig.1&2)

Refrigerant Line

Connections

Drain

Connections

1-9/16

2-15/16

Fig.22CoilCoilConnectionDimensionsDimensions

5/16

2-13/16

1-1/4

5/16 1-3/8

2-15/16

4.2 Vertical Downflow

Conversion to Vertical Downflow: A vertical upflow unit may be converted to vertical downflow. Remove the door and indoor coil and reinstall 180° from original position. See Fig. 2~3.

IMPORTANT: To comply with certification agencies and the National Electric Code for horizontal right application, the circuit breaker(s) on field-installed electric heater kits must be re-installed per procedure below so that the breaker switch “on” position and marking is up and, “off” position and marking is down.

•To rotate breaker(s): Rotate one breaker set (circuit) at a time starting with the one on the right. Loosen both lugs on the load side of the breaker. (Make sure that wires are identified and are reinstalled into proper breaker).Wires are bundles with wire ties, one bundle going to the right lug and one bundle going to the left lug.

8