Charging
Charging
Charging Procedure
Step 1
Should the lineset length of an installation exceed the
charge supplied with the outdoor unit, additional
charge will be required. To calculate the additional
charge, refer to the installation instructions supplied
with the unit and calculate the additional charge
weight as specified for line length. Write down any
additional charge amount calculated for weigh-in.
Note: The lines must be completely evacuated before
adding charge or opening the service valves.
Charging
Charging Procedure
Step 2
To add additional charge to the system, remove the
charging port cap and attach the charging hose
adapter. (Adapter part # AD-87)
Charging
Charging Procedure
Step 3
Attach the low side hose of the manifold gauge to the adapter.
Note: A special 1/2”-20F - 1/4”M adapter is required to fit the
refrigerant hose to the charging port of the outdoor unit.
Charging
Charging Procedure
Step 4
Verify that the low side valve of the manifold gauge is
closed and check the manifold hose connections.
Connect the charging hose to the refrigerant tank.
Charging
Charging Procedure
Step 5
Open the tank valve, turn the scale ON, and
zero the meter scale.
Charging
Charging Procedure
Step 6
Open the low side valve of the manifold gauge to
begin adding refrigerant.
Charging
Charging Procedure
Step 7
When the proper amount of refrigerant has been
added (by weight), close the low side valve of the
manifold gauge.
Charging
Charging Procedure
Step 8
Close the tank valve, remove the hose and adapter,
and replace the charging port cap. Note: If this is a
new installation, Be sure to open the liquid and vapor
service valves before starting the unit (see installation
section).