Introduce enough refrigerant into
circuit in order to obtain a pressure
of 85 to 100 kPa. Search for possible
leaks using detector. This operation
should be carried out with great care
throughout the system.
If leaks are detected, pump down
the refrigerant, and repair defective
component. Repeat test process, to
check that the repair can withstand
rated pressure.
Refrigerant charge
(all split system types)
Units ship with a nitrogen holding
charge and isolating valves.
After system pressure and vacuum
testing, fill up unit with refrigerant.
The refrigerant complement will be
charged according to the diameter
and the length of the refrigerant
piping work up to obtain the
correct superheat and subcooling
temperatures.
Oil charge
The oil quantity necessary for the
split system has also to be adjusted
according to the diameter and the
length of the refrigerant piping work.
Important note: These operations
have to be performed by a specialist
according to the rules of the art. The
results have to be written on a start
up record by the Trane engineer
or the client’s specialist who has
performed this start up. The quantity
of refrigerant and oil added are at the
client’s charges.
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