Daikin VRV III Manual page 446

ED34-862
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may follow the
installation method mentioned below.
After the work is finished, make sure to check that there is no gas leak.
When you keep on tightening the flare nut with a spanner,
there is a point where the tightening torque suddenly increases. From that position, further tighten the flare nut the
angle shown below:
After checking the pipe-connection for gas leakage, be sure to insulate the liquid and gas pipe, referring to Fig.9,
10 and the following points.
FXMQ125MFV1
1. Insulate the liquid and gas pipes using the insulation for fitting (Accessory 2), 3))
(Tighten both edges with clamping material.)
2. Make sure the insulation for fitting (Accessory 3)) on the gas pipe has its seams facing up.
3. For the gas pipe, wrap the sealing pad (Accessory 4)) around the insulation for fitting (Accessory 3)) (flare nut
part).
FXMQ200 · 250MFV1
1. Insulate the liquid pipe using the insulation for fitting (Accessory 2)).
(Tighten both edges with clamping material.)
2. Use the attached pipe (Accessory 1)) for connecting the gas pipes and make sure to insulate the gas pipes (using
field supplied insulation) all the way to the base where they connect to the unit.
3. The turning torque of the hexagon head bolts (Accessory 7)) to connect the attached pipe (Accessory 1)) to the
unit is 21.5 – 28.9 N/m.
Gas
pipe
Liquid
pipe
FXMQ-MF
Table 3
Further tightening
Pipe size
angle
9.5 (3/8") 60 to 90 degrees
15.9 (5/8") 30 to 60 degrees
Insulation
for fitting
Insulation
(Accessory 3))
(Attached with main body)
Flare nut
Eliminate a gap
Main body
Clamps (Accessory 10))
Gas pipe
Eliminate a gap
Liquid
Main body
pipe
Insulation
(Attached with
main body)
Clamps
(Accessory 10))
Fig. 9
Eliminate
a gap
Main body
Insulation
(Attached with
main body)
Eliminate
a gap
Main body
Insulation
(Attached with
main body)
Clamps
(Accessory10))
Fig. 10
Recommended arm length of
tool
Approx. 200mm
Approx. 300mm
Sealing pad
(Accessory 4))
Insulation (Field supplied)
Insulation for fitting
(Accessory 2))
Insulation
(Field supplied)
Flare nut
Insulation
(Field supplied)
Attached pipe
(Accessory 1))
Spring washer (Accessory 6))
Hexagon head bolt (Accessory 7))
Insulation for fitting
(Accessory 2))
Insulation
(Field
supplied)
Flare nut
: http://splitoff.ru/tehn-doc.html
Installation
13
441