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SMMS-i
Installation Manual
SMMS-i
Installation Manual
When drawing pipes downward
• Adding only one follower unit is possible. Install the additional unit so that its position is opposite to the header
unit. Use an extension valve for installation (See the figure above.).
Specify the pipe diameter in advance to allow for adding another unit.
[Vertical connection of branch units]
▼ Figure 5 ▼ Figure 6
GOOD
Header unit
A
Follower unit
B
Follower unit
C
L-shaped
pipe
To gas-side branch
unit
To gas-side branch
unit
NO GOOD
To gas-side
branch unit
To gas-side
branch unit
7 REFRIGERANT PIPING
WARNING
• If the refrigerant gas leaks during installation, ventilate the room.
If the leaked refrigerant gas comes into contact with fire, noxious gas may be generated.
• After installation, check that the refrigerant gas does not leak.
If the refrigerant gas leaks into the room and comes into contact with fire such as a fan heater, stove, or kitchen range,
noxious gas may be generated.
Connection of refrigerant pipe
• The refrigerant pipe connecting section is set in the
outdoor unit. Remove the front panel and the piping/
wiring panel. (M5: 9 pcs.)
• As shown in the illustration on the right, the hooks are
at the right and left sides of the front panel. Lift up and
remove the front panel.
• Pipes can be drawn out forward or downward from the
outdoor unit.
• When drawing out the pipe forward, draw it out to the
outside via the piping/wiring panel, and leave a space
of 500mm or more from the main pipe connecting the
outdoor unit with the indoor unit, considering service
work or other work on the unit. (For replacing the
compressor, 500mm or more space is required.)
• When drawing out the pipe downward, remove the
knockouts on the base plate of the outdoor unit, draw
the pipes out of the outdoor unit, and perform piping on
the right/left or rear side. Downward length of the balance pipe should be 5m or less.
(MAP080, MAP100, MAP120) (MAP140, MAP160)
Front panel
Piping/wiring panel
(Rear piping)
Drawing out
downward
(Left piping)
(Right piping)
D
r
a
w
i
n
g
o
u
t
f
o
r
w
a
r
d
5
0
0
m
m
o
r
m
o
r
e
Hook
(Left
piping)
(Right
piping)
Ball valve of gas
side
Packed valve of liquid
side
Packed valve of
balance pipe
Ball valve of gas
side
Ball valve of liquid
side
Packed valve of
balance pipe
17-EN 18-EN
+00EH99871699_01EN.book Page 9 Thursday, August 26, 2010 4:41 PM