Daikin FBQ20EAVAK Installation Manual page 82

01_EN_3P369976-2C.fm Page 21 Thursday ,October 20, 2016 9:36 AM
When re-charging refrigerant, follow the procedure below.
1. Recover refrigerant until the gauge pressure from the refrigerant recovery port drops below 0.09 MPa
(gauge pressure : – 0.011 MPa).
2. Perform vacuum drying from the same refrigerant recovery port using a vacuum pump.
3. Charge the refrigerant from the service port of the liquid-side stop valve when re-charging refrigerant.
RZQ 20 · 24 type
8-4 PRECAUTIONS WHEN ADDING R410A
• Before filling, check whether the cylinder has a siphon attached or not. (It should have something like "liquid
filling siphon attached" displayed on it.)
Filling a cylinder with an attached siphon
Stand the cylinder upright
when filling.
(There is a siphon pipe inside,
so the cylinder need not be
upside-down to fill with liquid.)
• To prevent entry of any impurities and insure sufficient pressure resistance, always use the special tools
dedicated for R410A.
• The refrigerant should be charged from the service port of the liquid-side stop valve.
〈 CAUTION 〉
To plumbing persons
• After completing installation, be sure to open the valves.
(Operating the unit with the valve shut will break the compressor.)
• Do not allow refrigerant to escape into the atmosphere recklessly for earth environment protection.
21
Refrigerant
recovery port
RZQ36 · 45 · RZ(Q/R)48 type
Refrigerant
recovery port
Filling other cylinders
Stand the tank upside-
down and charge.
(Turn the cylinder upside-
down when filling.)
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