Greenheck MSX (470658) - Manual (Page 18)

18 Modular Supply Make-Up Air Unit
®
Start-Up - Electric Heater (optional)
Pre Start-Up Check
Check all electrical connections. Tighten any loose
connection to all components including contactors,
heating elements and main power lugs.
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).
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.
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.