Panasonic 2WAY MULTI U-16GE3E5 Test Run Manual page 8

<3WAY Multi/Models>
(1) System tubing
Limitations on refrigerant tubing length

Outdoor unit
LB
ＬＡ
First branch
(Branch line)
ℓ １
L3
Externally mounted solenoid valve kit (sold separately)
Solenoid valve kit (purchased separately)
Branch tube (purchased separately)
Ball valve (purchased separately)
T-tee (provided by installer)
Closed (pinch) weld
Header (purchased separately)
Difference in height of Indoor units after last branch

Height difference between indoor units after the final branch must be less than 4 m.
3-tube line (discharge gas tube, suction gas tube, liquid tube)
2-tube line (gas tube, liquid tube)
L1
L2
LC LD
When T-tee branch tubing is used
(header branch method)
ℓ ２ ℓ ３ ℓ ４
Indoor unit
CAUTION : 1) Each indoor unit requires a solenoid valve kit.
4 m or less
Fig. 1 Length of Refrigerant Tubing
L4
ℓ ｎ
ℓ n-1
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.
If height difference between indoor units after the final branch cannot be less than 4 m,
divide the height difference between upper and lower units (2 to 1).
I - 5
2X m or
more
More than 4 m
X m