15
Outdoor unit
Indoor unit
GAS line
LIQUID line
Condensate discharge
Siphon
10.4. FITTING THE CONNECTION PIPE
WARNING:
H1 ≤ 10m
H2 ≤ 10m
OUTDOOR UNIT ABOVE AND INDOOR UNIT BELOW
In this case, provision must be made on the suc-
tion piping (C) for siphons (F) every 3 metres of
height difference. These siphons allow the oil to
return to the compressor. The connection pipes
must be insulated. The maximum height differ-
ence between the indoor unit and the outdoor
unit must not exceed the values indicated in the
table.
OUTDOOR UNIT BELOW AND INDOOR UNIT ABOVE
In this case it is necessary to install a siphon (F)
on the suction piping (C) in order to block the
outflow of refrigerant and thereby to avoid liq-
uid returning to the compressor. The connection
pipes must be insulated. The maximum height
difference between the indoor unit and the out-
door unit must not exceed the values indicated
in the table.
WARNING:
Wrap pipe insulating material around the
joint on the indoor unit and secure it with
plastic straps to avoid condensate forming
at the joints.
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