38
MUA-SVX004B-EN
Start-Up
Before starting the rooftop gas heating unit, use the “Installation Check Sheet” (found at the end
of this manual) in conjunction with the procedures outlined below to ensure that the unit is
completely and properly installed and ready for start-up.
1. Inspect all wiring connections; connections should be clean and tight.
2. Trace circuits to ensure that actual wiring agrees with the “as wired” diagrams provided with
the unit. Information in the title block of the wiring diagram(s) should match the data
appearing on the unit nameplate.
3. Verify that the system switch is in the OFF position.
4. Check unit supply voltage to ensure that it is within the utilization range.
5. Inspect the interior of the unit; remove any debris or tools which may be present.
Starting Unit In Heating Mode
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1. Close the unit disconnect switch(s) that provide current to the unit control panel.
2. Set the room thermostat/switching subbase as indicated below:
a. Position the heating system switch at either HEAT or AUTO;
b. Set the fan switch at AUTO; and,
c. Adjust the temperature control setting to some point above room temperature.
3. Place the system switch in the ON position.
N
No
otte
e:: With the thermostat calling for heating, unit operation is automatic.
Final Checkout
Run the unit sequentially through its stages of heating. Once proper unit operation is verified,
perform these final steps:
1. Inspect the unit for debris and/or misplaced tools and hardware.
2. Be sure all gas valves and controls are in the operating position if the unit will be operating
immediately
3. Secure all exterior panels in place.
