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GAUGE SET
CONNECTIONS FOR TESTING AND CHARGING
A
Close manifold gauge set valves and
connect the center hose to a cylinder of
HFC-410A. Set
for
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.
START: Determine how refrigerant is metered
WHEN TO CHARGE?
S
Warm weather best
S
Can charge in colder weather
CHARGE METHOD? Determine by:
S
Metering device type
S
Outdoor ambient temperature
REQUIREMENTS:
S
Sufficient heat load in structure
S
Indoor temperature between 70‐80ºF (21-26ºC)
S
Manifold gauge set connected to unit
S
Thermometers:
- to measure outdoor ambient temperature
- to measure liquid line temperature
- to measure suction line temperature
SUCTION LINE
B
SERVICE PORT
CONNECTION
liquid phase
REFRIGERANT TANK
CHARGE IN
LIQUID PHASE
TEMPERATURE
D
SENSOR
Figure 16. Manifold Gauge Set Setup and Connections
Figure 17. Determining Charge Method
MANIFOLD GAUGE SET
LOW
A
DIGITAL SCALE
C
TO LIQUID
LINE SERVICE
VALVE
65ºF (18.3ºC)
AND ABOVE
APPROACH OR
SUBCOOLING
Page 19
HIGH
OUTDOOR UNIT
TEMPERATURE SENSOR
(LIQUID LINE)
TXV
OUTDOOR AMBIENT
TEMPERATURE
64ºF (17.7ºC)
AND BELOW
WEIGH‐IN
TSA*H4 SERIES
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