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2. After the compressor and condenser fan have
started and operated for approximately 30 minutes,
observe the operating pressures. Compare the
operating pressures to the operating pressure
curve.
3. Check system subcooling.
4. Repeat Step 1 through Step 3 for each refrigerant
circuit.
5. To stop the SERVICE TEST, turn the main power
disconnect switch to the “Off” position or proceed
to the next component start-up procedure. Remove
electromechanical test mode connections (if
applicable).
Heating Start-Up
When starting the unit for the first time or servicing the
heaters, it is a good practice to start the heater with the
main gas supply turned “Off”. Once the ignition
system and components have been checked, open the
main power disconnect switch to reset the unit.
Final System Set Up
After completing all of the pre-start and startup
procedures outlined in the previous sections (i.e.,
operating the unit in each of its modes through all
available stages of cooling and heating), perform these
final checks before leaving the unit:
☐
Inspect the unit for misplaced tools, hardware, and
debris.
☐
Verify that all exterior panels including the control
panel doors and condenser grilles are secured in
place.
☐
Close the main disconnect switch or circuit
protector switch that provides the supply power to
the unit’s terminal block or the unit mounted
disconnect switch.
