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ActronAir
is constantly seeking ways to improve the design of it’s products, therefore specifications are subject to change without notice.
Copyright © 2017 Actron Engineering Pty. Ltd.
CHARGING METHOD 1: SUBCOOLING AND SUPERHEAT
Parameters:
LLT =
Liquid Line Temperature
SLT =
Suction Line Temperature
SCT =
Saturated Condensing Temperature
SST =
Saturated Suction Temperature
Cooling Operation:
Heating Operation:
Subcooling should be between 4K and 8K.
Subcooling should be between 8K and 14K.
Superheat should be between 2K and 8K.
Superheat should be between 2K and 8K.
Cooling and Heating Operation:
Adjust the refrigerant charge to obtain the correct super heat and subcool for optimal performance as follows:
1. Ensure that air filters are fitted into indoor section and total systems airflows are balanced.
(Air filters are not supplied with the unit, it is the responsibility of the installing contractor to provide and
fit adequate return air and fresh air filters).
2. Connect service gauges to the schrader valves. Two sets of service gauges are required, each one connected
to circuit 1 and 2, in order to conduct simultaneous refrigerant charge adjustments.
3. Mount the temperature sensing devices (one for each circuit) on the liquid line as close as possible to the liquid and
suction line service valve.
4. Start the unit in cool mode ensuring that both circuit 1 and 2 system compressors are in 100% operation before taking
service gauges reading. Allow the system to stabilize for next 20 minutes before recording.
See Diagram Below:
Service
Gauges 1
Service
Gauges 2
Large Compressor
(Circuit 2)
Suction
Schrader Valve
(Circuit 2)
Discharge
Schrader Valve
(Circuit 1)
Discharge
Schrader Valve
(Circuit 2)
Small Compressor
(Circuit 1)
R410A
Refrigerant
Container
Suction
Schrader Valve
(Circuit 1)
REFRIGERANT CHARGING
