Sanyo SGP-M2 Manuel D'installation page 25

The maximum number of indoor units that can be connected is 24. The capacities that can be connected to the
indoor units are 50 - 200%.
Outdoor unit
3-tube line (discharge gas tube, suction gas tube, liquid tube)
2-tube line (gas tube, liquid tube)
Indoor unit
External electric
valve kit
Solenoid
valve kit
D1
First branch
(Branch line)
H1 D2
Solenoid
valve kit
Indoor unit
Height difference between indoor units after the fi nal branch must be less than 4 m.
Main tube (level)
Indoor
Outdoor
Indoor
Indoor
Fig. 4 Level Use
d21
d22
Dn
Header
Maximum allowable tubing length L1 ≤ 120 m
L2 (Maximum length after fi rst branch)
L4
D3
d2
d1
d3
If height difference between indoor units after the fi nal branch cannot be less than 4 m,
divide the height difference between upper and lower units (2 to 1).
4 m or less
Fig. 3 Length of Refrigerant Tubing
Closed weld
GB - 25
CAUTION : 1) Each indoor unit requires a solenoid valve kit.
2) Never branch the tube between a solenoid valve kit and indoor unit.
3) Never branch the tube again after the header branching.
4) If using an external electric valve kit, install it between the solenoid
valve kit and the indoor unit.
d23
Solenoid valve kit (purchased separately)
20 cm or more if indoor unit
Branch tube (purchased separately)
is installed in lower position
than header.
Ball valve (provided by installer)
T-tee (provided by installer)
Closed (pinch) weld
d24
Maximum length of each Header (purchased separately)
branch tube
d ≤ 30 m
H2 (Height difference between indoor units)
≤ 15 m
L5
d5
d4
2X m or
more
X m
Closed weld
Main tube (vertical)
L3 < 2 m
Outdoor
Fig. 5 Vertical Use
More than 4 m
Indoor
Indoor