Daikin FTXA20C2V1BW - To Check Refrigerant Piping Joints for Leaks after Charging Refrigerant

7 | 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
interconnection cable"[4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.