Start-Up; Preparation For Initial Start-Up; Initial Start-Up - Trane Thermafit AXM Installation, Operation And Maintenance Manual

Start-Up

Preparation for Initial Start-Up

After the system is completely installed with all wires
connected and all piping securely coupled, the heat pump
can be prepared for initial start-up.
Confirm there is a sufficient cooling or heating load
available for proper testing of the heat pump system.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.

Initial Start-Up

1. Close all drain valves and header purge valves.
2. Fill the heat pump with clean fluid mixture.
3. Inspect all connections for leaks during the filling
process.
4. De-energize heat pump using industry-standard
lockout/tagout procedures. Verify main power is turned
Table 12. Initial start-up readiness checklist
Start-Up Readiness Dimension
☐ ☐
Describe voltage service:
☐ Fused disconnect
☐ Non-fused disconnect
☐
☐ 50 Hz
☐ 60 Hz
Record rated power supply: __________volts_______ phase
☐
• Circuit breaker rating: _______
Record supply voltage on Heat Pump nameplate: _________________
☐
Record power supply voltage to ground: L-1= _______, L-2 = _______, L-3 = _______
☐
Record voltage between each phase: L-1 to L-2 = ______, L-2 to L-3 = ______, L-1 to L-3 = ______
☐ Agrees with nameplate values?
☐
☐ Voltages must be within 2%.
Check the box if all electrical connections inside the power distribution panel are tight.
☐
Check the box if all electrical connections inside each module electrical and control panel are tight. Confirm all components inside each module are
securely mounted and have not shifted during shipment.
☐
Record the control voltage between TB-1-1 and TB-2-1: ________
☐
52
off at the power distribution panel. Validate de-
energization using voltage meter.
5. Inspect all electrical connections to confirm terminals
are secure.
6. Inspect all fuses and overload settings to confirm they
meet specifications.
7. Inspect all refrigerant pressures for each module to
confirm no refrigerant has been lost.
8. Confirm the oil level is correct in each compressor.
NOTICE
Compressor Failure!
Failure to follow instructions below could result in
catastrophic compressor failure.
Do not operate with insufficient oil.
9. Connect phase monitor wiring, if required.
10. Confirm refrigerant valves, if equipped, are open at the
compressors.
11. Confirm that pressure and temperature switches are in
the closed position.
12. Apply power to all modules in the heat pump system.
13. Turn on the load fluid pumps and confirm there is
proper flow and the pressure drop across the system is
as expected.
ARTC-SVX009A-EN