Sterling RT User Manual
Page 19
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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
1. Close the unit disconnect switch(s) that provide
current to the unit control panel.
High voltage is present in some
areas of the control panel(s) with the unit
disconnect switch closed. Failure to exercise
c a u t i o n w h e n wo r k i n g a ro u n d e n e rg i z e d
electrical components may result in injury or
death from electrical shock.
START-UP
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.
With the thermostat calling for heating, unit operation is
automatic.
FINAL CHECKOUT
Run the unit sequentially through its stages of heating.
One proper unit operation is verifi ed, perform these fi nal
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.