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TSA*S4 SERIES
TO LIQUID
LINE SERVICE
VALVE
TEMPERATURE
SENSOR
DIGITAL SCALE
REFRIGERANT TANK
TEMPERATURE SENSOR
(LIQUID LINE)
MANIFOLD GAUGE SET
A
Close manifold gauge set valves and
connect the center hose to a cylinder of
HFC−410A. Set for liquid phase
charging.
B
Connect the manifold gauge set’s low
pressure side to the suction line service
port.
C
Connect the manifold gauge set’s high
pressure side to the liquid line service
port.
D
Position temperature sensor on liquid line
near liquid line service port.
OUTDOOR UNIT
CHARGE IN
LIQUID PHASE
CONNECTIONS FOR TESTING AND CHARGING
GAUGE SET
A
C
D
LOW
HIGH
B
SUCTION LINE
SERVICE PORT
CONNECTION
Figure 17. Gauge Set Setup and Connections
WHEN TO CHARGE?
Warm weather best
Can charge in colder weather
CHARGE METHOD? Determine by:
Metering device type
Outdoor ambient temperature
REQUIREMENTS:
Sufficient heat load in structure
Indoor temperature between 70-80ºF (21−26ºC)
Manifold gauge set connected to unit
Thermometers:
−
to measure outdoor ambient temperature
−
to measure liquid line temperature
−
to measure suction line temperature
SUBCOOLING
WEIGH-IN
64ºF (17.7ºC)
AND BELOW
65ºF (18.3ºC)
AND ABOVE
START: Determine how refrigerant is metered
TXV
Figure 18. Determining Charge Method
OUTDOOR AMBIENT
TEMPERATURE
