Greenheck Fan 470658 MSX Start-Up- Electric Heater optional, Airflow Interlock, Pre Start-UpCheck

Start-Up - Electric Heater (optional)

Refer to the Start-Up Checklist in the Reference section before proceeding further!

Pre Start-Up Check

Check all electrical connections. Tighten any loose connection to all components including contactors, heating elements and main power lugs.

warning

Disconnect and lock-out all power before performing any maintenance or service to the unit. Failure to due so could result in serious injury or death and damage to equipment.

1. Check the Voltage

Before starting the heater, compare the supplied voltage, hertz, and phase with the heater’s nameplate information.

2. Airflow Interlock

With the supply fan on, verify the electric heater’s airflow interlock (DDS) is made.

3. Set the Unit’s Operating Temperature

Set the operating temperature by adjusting the discharge temperature selector. Typical settings are 65-70°F (18-21°C).

note

If the heater is equipped with an optional inlet air sensor the heater will not energize unless the outdoor air temperature is less than the inlet air sensor’s set point.

18 Model MSX Make-Up Air ®