23
Refrigerant Piping Work
Charge refrigerant R410A in the refrigerant
cycle. Do not charge oxygen, acetylene or
other ammable and poisonous gases into
the refrigerant cycle when performing a
leakage test or an air-tight test. These types
of gases are extremely dangerous and can
cause an explosion. It is recommended that
compressed air, nitrogen or refrigerant be
used for these types of tests.
Left Side Piping
16. Refrigerant Piping Work
Rear Side Piping
Fig. Liquid pipe
unit: mm
Model (HP) a c d
370 10R
373 10R
16.1 Piping Materials
(1) Prepare locally-supplied copper pipes.
unit: mm
Model (HP) Gas pipe Liquid pipe
9.53
(3)
dust or foreign matters.
16.2 Piping Connection
(1)
d
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