26-EN
25-EN
<Upright connection of suction gas joint>
A
To indoor unit
Suction gas joint
Unit
Suction gas joint
Header unit A
Follower unit B
A view
Vertical line
q
Figure 5
Incorrect
Main pipe
<When drawing pipes downward>
L-shaped
pipe
To the indoor unit
Suction gas
joint
Suction gas joint
Header unit
A
Follower unit
B
Follower unit
C
Suction gas
joint
q
Figure 6
q
Figure 7
[Vertical connection of branch units]
Correct
Incorrect
Main pipe
5. Be careful of the connecting arrangement of the header unit and follower units. Set the outdoor units in order of
capacity from the one with the largest capacity. (A (Header unit)
≥
B
≥
C)
• Be sure to use a header unit for the leading outdoor unit to be connected to the main pipe. (Figure 1, 3 and 6)
• Be sure to use a T-shaped branch joint (RBM-BT14FE/RBM-BT24FE: separately purchased) to connect each
outdoor unit.
• Be careful of the direction of the Outdoor unit connection piping kit for the liquid side. (As shown in Figure 2, a
Outdoor unit connection piping kit cannot be attached so that the refrigerant of the main pipe
fl
ows directly into
the header unit.)
• When attaching a Y-shaped branch unit for the outdoor unit connection piping kit, attach it level with the
ground (Be sure not to exceed ±15 degrees.). Regarding a T-shape branch joints for the liquid side, there is no
restriction for its angle.
At a level position
A
B
(Horizontal line)
(Horizontal line)
(A arrow view)
(B arrow view)
Within ±15
degrees
Within ±15 degrees
Do not connect
a branch unit
vertically.
• In case of using the Y-shaped branching joint for connecting between
outdoor units (Discharge gas joint and Suction gas joint), please keep
the straight part of at least 500mm at the inlet.
500 mm
or more
Discharge side gas piping / Liquid piping
Header unit A
Header unit A
Follower unit B
Follower unit B
Follower unit C
Follower unit C
Main pipe
Main pipe
To indoor unit
To indoor unit
q
Figure 1
q
Figure 2
Correct
Incorrect
Discharge gas joint
Discharge gas joint
Liquid joint
Liquid joint
Suction side gas piping
Header unit
A
Header unit
A
Follower unit
B
Follower unit
B
Follower unit
C
Follower unit
C
Main pipe
Main pipe
To the indoor unit
To the indoor unit
Suction gas joint
Suction gas joint
q
Figure 3
q
Figure 4
[Inverse connection of suction gas joint]
Correct
Incorrect
– 13 –
AMP Air Conditioning
www.ampair.co.uk | [email protected]
