Fujitsu AJ**A72LBTF - Page 16

En-16
CAUTION
To prevent the oil from settling in the stopped unit, install the pipes between the outdoor units so that they are
level or are tilted upward to the outdoor units.
(1) Examples of multiple unit installation are shown below.
Fig. 4.7-11
a) Installable patterns
b) Non-installable patterns
(2) If the length of the pipe from the pipe joint to the outdoor unit exceeds 2 m, provide a trap of 200 mm more on the gas pipe.
However, it is not necessary to provide a rise on the pipe that is connected to the master unit even if it exceeds 2 m.
Fig. 4.7-12
a) In case of less than 2 m
b) In case of 2 m or mre
MASTER SLAVE 1 SLAVE 2
MASTER SLAVE 1 SLAVE 2
MASTER
SLAVE 1
SLAVE 2
To indoor unit
To indoor unit
To indoor unit
MASTER SLAVE 1 SLAVE 2
MASTER SLAVE 1 SLAVE 2
MASTER SLAVE 1 SLAVE 2
OK
OK
OK
No Good
No Good
No Good
To indoor unit
To indoor unit
To indoor unit
MASTER SLAVE 1 SLAVE 2
MASTER SLAVE 1 SLAVE 2
To indoor unit
To indoor unit
Gas pipe
Outdoor unit branch kit
Less than 2 m
Separation tube
Gas pipe
2 m or less
2 m or more
Rise
200 mm or more
Fig. 4.7-10 Examples of multiple unit installation
(Example 1)
Master Slave 1
<Rear>
<Front>
Slave 2
(Example 2)
Master Slave 1 Slave 2
(Example 3)
Slave 2 Slave 1
<Rear>
<Front>
Master
(Example 4)
Master Slave 1
<Rear>
<Front>
Slave 2
(Example 5)
<Rear>
<Front>
Master
Slave 1
Slave 2
<Rear>
<Front>
<Rear>
<Front>
<Rear>
<Front>
9374241033_IM_en_p01-17.p65 26/8/2008, 18:2316