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3. Pipe installation between the outdoor units
f You will need branch joints, which is an optional accessory, for connecting in between outdoor units in order to combine
outdoor units in module.
❋ For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do
not use T-joint)
f When you install the outdoor units in module, there is no restriction of installation order among outdoor units.
f Height of the connection pipe should be same or lower than the ones connected to the outdoor units.
f Check the changes in comparison with the DVM II and III.
Caution Correct installation Incorrect installation
Refrigerant pipes should
be connected at the same
or lower level than the
ones connected to the
outdoor unit.
Refrigerant pipes must be
connected by the side of
the product.
Straight section
should be 300mm
(12inch) or more
Branch joint between
outdoor units must be
installed horizontally.
Install a vertical trap in
following cases as shown
in the figure :
Case1. Pipe length
between outdoor unit
branches exceeds
2m(6.56ft).
Case2. Pipe length
between outdoor unit
and its branch exceeds
2m(6.56ft).
1m (3.28ft) less
1m (3.28ft) less
200 (8)~
300mm
(12inch)
200 (8)~
300mm
(12inch)
Over 2m (6.56ft)
Over 2m (6.56ft)
Over 2m (6.56ft)
Over 2m (6.56ft)
Refrigerant pipe installation
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