Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 91

Maintenance Inspections
1.3.3 Piping Connection
80
Since stricter prevention of impurity incorporation is required for new refrigerant, be sure to
blow nitrogen during brazing work.
In addition to brazing, pipe curing and vacuum drying must be surely performed in order to
prevent impurity incorporation into the piping system and at the same time more complete
construction management must be carried out.
According to model, the diameter of liquid and gas pipes is one size smaller.
Capacity Liquid pipe
φ6.4×t0.8
40
φ6.4×t0.8
45
φ6.4×t0.8
50
φ6.4×t0.8
56
φ6.4×t0.8
63
φ9.5×t0.8
80
φ9.5×t0.8
112
φ9.5×t0.8
140
φ9.5×t0.8
160
φ9.5×t0.8
224
φ12.7×t0.8
280
R-410A
Gas pipe
φ12.7×t0.8
φ12.7×t0.8
φ12.7×t0.8
φ12.7×t0.8
φ12.7×t0.8
φ15.9×t1.0
φ15.9×t1.0
φ15.9×t1.0
φ15.9×t1.0
φ25.4×t1.0
φ25.4×t1.0
SiBE26-701
R-407C
Liquid pipe Gas pipe
φ6.4×t0.8 φ12.7×t0.8
φ6.4×t0.8 φ12.7×t0.8
φ6.4×t0.8 φ12.7×t0.8
φ9.5×t0.8 φ15.9×t1.0
φ9.5×t0.8 φ15.9×t1.0
φ9.5×t0.8 φ15.9×t1.0
φ9.5×t0.8 φ19.1×t1.0
φ9.5×t0.8 φ19.1×t1.0
φ9.5×t0.8 φ19.1×t1.0
φ12.7×t0.8 φ25.4×t1.0
φ15.9×t1.0 φ28.6×t1.2
Troubleshooting