Step 4: Connect pipes
When connecting refrigerant pipes, be careful not to use excessive torque or to deform the piping in any
way. You should first connect the low-pressure pipe, then the high-pressure pipe.
G
IMPORTANT
There are three valve groups on the outdoor unit. Note the letter of the group were the indoor
part pipe is connected to the outdoor part. This is of importance when connecting the electrical
wires.
A valve group consits of a fluid valve and a gas valve. see picture.
G
MINIMUM BEND RADIUS
When bending connective refrigerant piping,
the minimum bending radius is 10cm.
Instructions for Connecting Piping to Indoor Unit
1.
Align the center of the two pipes that you will connect.
Indoor unit tubing
2.
Tighten the flare nut as tightly as possible by hand.
3.
Using a spanner, grip the nut on the unit tubing.
4.
While firmly gripping the nut on the unit tubing, use a torque
wrench to tighten the flare nut according to the torque values
in the Torque Requirements table below. Loosen the flaring
nut slightly, then tighten again.
MIND
The pipes from the indoor parts can me connected randomly to one of
the valve groups. The air conditioner is programmed to detect which
indoor part is connected to which group.
Take care: If the pipes of a indoor part are connected to to valve group C
then the electrical wires of that group must also be connected to terminal
C on the oudoor part which is marked with L(C), N(C) and S(C). The (C)
marks that it concers terminal C.
Pipe
Flare nut
Radius
10cm (4in)
4
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