Checking Refrigerant Charge; Charging By Liquid Pressure; Charging By Weight; Final Leak Testing - Heat Controller RSGxxS-1D Series Installation, Operation & Maintenance Manual

8.CHECKING REFRIGERANT CHARGE

8.CHECKING REFRIGERANT CHARGE 8.CHECKING REFRIGERANT CHARGE
Charge for all systems should be checked against the Charging Chart inside the
access panel cover.
Charge for all systems should be checked against the Charging Chart inside the Charge for all systems should be checked against the Charging Chart inside the
IMPORTANT:Do not operate the compressor without charge in system. Addition of
access panel cover. access panel cover.
R-410A will raise pressures (vapor, liquid and discharge).
IMPORTANT:Do not operate the compressor without charge in system. Addition of IMPORTANT:Do not operate the compressor without charge in system. Addition of
If adding R-410A raises both vapor pressure and temperature, the unit is over-
R-410A will raise pressures (vapor, liquid and discharge). R-410A will raise pressures (vapor, liquid and discharge).
charged.
If adding R-410A raises both vapor pressure and temperature, the unit is over- If adding R-410A raises both vapor pressure and temperature, the unit is over-
IMPORTANT: Use industry-approved charging methods to ensure proper system
charged. charged.
charge.
IMPORTANT: Use industry-approved charging methods to ensure proper system IMPORTANT: Use industry-approved charging methods to ensure proper system

8.1 CHARGING BY LIQUID PRESSURE

charge. charge.
The liquid pressure method is used for charging systems in the cooling and heating
8.1 CHARGING BY LIQUID PRESSURE 8.1 CHARGING BY LIQUID PRESSURE
mode. The service port on the liquid (small valve) and suction (large valve) is used
The liquid pressure method is used for charging systems in the cooling and heating The liquid pressure method is used for charging systems in the cooling and heating
for this purpose.
mode. The service port on the liquid (small valve) and suction (large valve) is used mode. The service port on the liquid (small valve) and suction (large valve) is used
Verify that the outdoor unit is running and the indoor air handler is delivering the
for this purpose. for this purpose.
maximum airflow for this system size. Read and record the outdoor ambient tem -
Verify that the outdoor unit is running and the indoor air handler is delivering the Verify that the outdoor unit is running and the indoor air handler is delivering the
perature. Read and record the liquid and suction pressures at the ports on the liquid
maximum airflow for this system size. Read and record the outdoor ambient tem - maximum airflow for this system size. Read and record the outdoor ambient tem -
and suction valves.
perature. Read and record the liquid and suction pressures at the ports on the liquid perature. Read and record the liquid and suction pressures at the ports on the liquid
If refrigerant lines are sized using the nameplate charge, the correct liquid pressure is
and suction valves. and suction valves.
found at the intersection of the suction pressure and the outdoor ambient.
If refrigerant lines are sized using the nameplate charge, the correct liquid pressure is If refrigerant lines are sized using the nameplate charge, the correct liquid pressure is
1. Remove refrigerant charge if the liquid pressure is above the chart value. The Clean Air
found at the intersection of the suction pressure and the outdoor ambient. found at the intersection of the suction pressure and the outdoor ambient.
Act prohibits releasing (venting) refrigerant into the atmosphere.
1. Remove refrigerant charge if the liquid pressure is above the chart value. The Clean Air 1. Remove refrigerant charge if the liquid pressure is above the chart value. The Clean Air
2. Add refrigerant charge if the liquid pressure is below the chart value.
Act prohibits releasing (venting) refrigerant into the atmosphere. Act prohibits releasing (venting) refrigerant into the atmosphere.
2. Add refrigerant charge if the liquid pressure is below the chart value. 2. Add refrigerant charge if the liquid pressure is below the chart value.

8.2 CHARGING BY WEIGHT

For a new installation, evacuation of interconnecting tubing and indoor coil is
8.2 CHARGING BY WEIGHT 8.2 CHARGING BY WEIGHT
adequate; otherwise, evacuate the entire system. Note that charge value includes
charge required for 15 ft. of standard size interconnecting liquid line. Calculate actual
For a new installation, evacuation of interconnecting tubing and indoor coil is For a new installation, evacuation of interconnecting tubing and indoor coil is
charge required with installed liquid line size and length, please see 6.1 of table of
adequate; otherwise, evacuate the entire system. Note that charge value includes adequate; otherwise, evacuate the entire system. Note that charge value includes
charge required for 15 ft. of standard size interconnecting liquid line. Calculate actual charge required for 15 ft. of standard size interconnecting liquid line. Calculate actual
contents.
charge required with installed liquid line size and length, please see 6.1 of table of charge required with installed liquid line size and length, please see 6.1 of table of
With an accurate scale (+/-1 oz.)
contents. contents.
difference between that shown on the unit data plate and that calculated for the new
With an accurate scale (+/-1 oz.) system Installation. if the entire system has been evacuated, add the total calculated With an accurate scale (+/-1 oz.)
difference between that shown on the unit data plate and that calculated for the new difference between that shown on the unit data plate and that calculated for the new
charge.
system Installation. if the entire system has been evacuated, add the total calculated system Installation. if the entire system has been evacuated, add the total calculated
charge. charge.

8.3 FINAL LEAK TESTING

After the unit has been properly evacuated and charged, a halogen leak detector
8.3 FINAL LEAK TESTING 8.3 FINAL LEAK TESTING
should be used to detect leaks in the system. All piping within the condensing unit,
After the unit has been properly evacuated and charged, a halogen leak detector After the unit has been properly evacuated and charged, a halogen leak detector evaporator, and interconnecting tubing should be checked for leaks. If a leak is
should be used to detect leaks in the system. All piping within the condensing unit, should be used to detect leaks in the system. All piping within the condensing unit,
detected, the refrigerant should be recovered before repairing the leak. The Clean Air
evaporator, and interconnecting tubing should be checked for leaks. If a leak is evaporator, and interconnecting tubing should be checked for leaks. If a leak is
Act prohibits releasing venting refrigerant into the atmosphere.
detected, the refrigerant should be recovered before repairing the leak. The Clean Air detected, the refrigerant should be recovered before repairing the leak. The Clean Air
Act prohibits releasing venting refrigerant into the atmosphere. Act prohibits releasing venting refrigerant into the atmosphere.
or volumetric charging device, adjust charge
or volumetric charging device, adjust charge or volumetric charging device, adjust charge
.
. .
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