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UHAA-IOM-1E
Operation and Maintenance
Figure 7.
UHAA Unit With Day/Night Relay Disconnect Switch
Notes:
•
Relay control voltage, are terminals A & B.
•
Control voltage is the same as heater supply voltage on 120V, 208V and 240V heaters.
•
120V control voltage on 277V heaters
Operation and Maintenance
This section explains startup, operating, and maintenance procedures.
Pre-Start Procedures
Complete the following steps before startup:
1.
Clean all construction dirt and debris from inside heater.
2. Attach front grille "F" with four screws "L". See Figures 2 and 3.
3. Position frame "P" over spring clips "Y" and snap in place. Secure with screw "Q".
Operating Instructions
1. Turn power on at circuit breaker.
2. Insert small-bladed screwdriver through grille opening into slot in thermostat adjusting stem.
3. Turn stem fully clockwise.
Heating element will energize and after short delay, the fan should start, causing warm-air
discharge from bottom of grille.
4. When desired temperature is reached, turn thermostat stem counterclockwise until it de-
energizes with an audible "click".
This heater employs a visual alarm (light) to warn that parts of the heater are getting excessively
hot. If the alarm illuminates, immediately disconnect power from heater and inspect for any objects
on or adjacent to the heater that may cause high temperatures. Do not operate the heater with the
alarm (light) illuminated.
Summary of Contents for UHAA-02
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