Daikin VRV II Series Design, Installation & Testing Instructions page 33

Si39-303
Flange
a) The flange sheet surface should be clean and undamaged. (Clean any dirt away with a cloth and check
Connection
b) Coat the flange sheet surface with refrigeration oil (Ester or ether oil) and then insert the packing. (Do
c) Tighten the bolts in opposite corners first to ensure that the connection is true.
Important points
1. Only clean refrigeration/oil should be used to coat the flange. (i.e. free from dirt or water)
2. The correct amount of torque should be applied when tightening the flange bolts.
Standard torques for tightening screws and bolts
ISO hexagonal bolt
Size
General Information
that there has been no damage.)
not use SUNISO oil.)
Class
kgf-cm ±15%
M8 125
M10 257
M12 436
M16 1,030
M20 2,050
[Example]
Order:A → C → B → D
5.8(5T)
N-m ±15%
1230
2520
4280
10,100
20,100
Installation
The bolts should be tightened little by
little in the above order such that the
same degree of torque is applied
evenly to each corner.
10.9(10T)
kgf-cm ±15% N-m ±15%
302 2960
620 6080
1,050 10,300
2,480 24,300
4,950 48,500
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