14 88-A5HP5001-1B-EN
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 70º F.
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.
Note: Subcooling specifications other than OD nameplate.
OD Model
ID Model (including
coil-furnace combinations)
Subcooling
A5HP5024
5TXCA002, 5TXCB003,
5TXCB004
9º F
A5HP5030
5TXCA002, 5TXCB003,
5TXCB004
9º 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
STEP 1 - Use the refrigerant line total length
and lift measurements from Section 5.3.
Total Line Length = __________ Ft.
Vertical Change (Lift) = __________ Ft.
14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)
LIFT
55º F
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