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Piping installation
Installer reference guide
38
CTXA-C(W)(B)(S) + FTXA-C(W)(B)(S)
Daikin room air conditioner
4P518023-15P – 2023.05
3
Insulate
the refrigerant piping, interconnection cable and drain hose on the
indoor unit: See
"9.1 To insulate the drain piping, refrigerant piping and
44].
NOTICE
Make sure to insulate all refrigerant piping. Any exposed piping might cause
condensation.
7.2.7 To check refrigerant piping joints for leaks after charging refrigerant
1
Perform the leak tests according to instructions in the outdoor unit installation
manual.
2
Charge refrigerant.
3
Check for refrigerant leaks after charging (see below).
Tightness test of field-made refrigerant joints indoors
1
Use a leakage test method with a minimum sensitivity of 5 g of refrigerant/
year. Test leaks using a pressure of at least 0.25 times the maximum working
pressure (see "PS High" on the unit nameplate).
If a leak is detected
1
Recover the refrigerant, repair the joint, and repeat the test.
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