Trane A5HP4 - Section 13. Start up; Section 14. System Charge Adjustment

88-A5HP4001-1A-EN 13
12.2 High Voltage Disconnect Switch
Install a separate disconnect switch at the outdoor unit.
For high voltage connections, flexible electrical conduit is recommended whenever vibration transmission may
create a noise problem within the structure.
12.3 High Voltage Ground
Ground the outdoor unit per national, state, and local code requirements.
CABLING SAFETY!
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any
other adverse environmental effects.
WARNING
!
See Section 14.2
for Outdoor
Temperatures
Above 55º F
See Section 14.4
for Outdoor
Temperatures
Below 55º F
Section 13. Start Up
13.1 System Start Up
STEP 1 - Ensure Sections 7 through 12 have been completed.
STEP 2 - Set System Thermostat to OFF.
STEP 3 - Turn on disconnect(s) to apply power to the indoor and outdoor units.
STEP 4 - Wait one (1) hour before starting the unit if compressor crankcase heater accessory is used and the
Outdoor Ambient is below 70ºF.
STEP 5 - Set system thermostat to ON.
STEP 1 - Check the outdoor temperatures.
Subcooling (in cooling mode) is the only recommended
method of charging above 55º F ambient outdoor
temperature. See Section 14.2.
For outdoor temperatures below 55º F, see Section 14.3.
Note: It is important to return in the spring or summer to
accurately charge the system in the cooling mode when
outdoor ambient temperature is above 55º F.
For best results the indoor temperature should be kept
between 70º F to 80º F.
14.1 Temperature Measurements
Section 14. System Charge Adjustment
Indoor Temp
80º F
70º F
Outdoor Temp 1
Outdoor Temp 2
55º F
120º F
55º F