Specifications

OPTIONAL PARTS
E-159
Distribution Pipe MSDD-50BR-E
How to Use / How to Install
The kit contains followings
During installation, be careful about the followings
Outline of system and pipe size
See the following for the specifications of liquid pipe, and gas pipe
Installation direction of joint
Installing Heat Insulation Cover and Heat Insulators
2-BRANCH PIPE
(
JOINT
) (
MSDD-50BR-E
)
※In case of 2 branch box connection for welding
Applicable model
Note:Besides these, please procure
the following locally:
(1)Tape for sealing the heat
insulation covers.
(2)Extension pipes for the
refrigerant system.
MXZ-8A140VA(R410A type)
1. Note the limit Iength of the refrigerant pipe refer to the installation manual of outdoor unit and branch box.
2. Note the limits for installing the indoor units refer to the installation manual of outdoor unit and branch box.
3. Us solder in connecting any branch joint with any piping system or with the pipe. Insoldering, use oxygen-free solder.
4. Each branch joint has a stopper.
In connecting any pipe to any branch joint, thrust the pipe home till it ocks.
5. In connecting pipes, take care not to let any dirt or other oreign matter enter any pipe.
6. Put a heat insulator into every refrigerant pipe.
Outdoor unit:R410A type (MXZ-8A140VA)
Liquid(mm)
Refer to installation manual of
outdoor unit and branch box
Gas(mm)
A B
Ǿ9.52
Ǿ15.88
・
The liquid pipe (small) Make it fit the heat-insulation cover (small) .
Seal the mating of the heat-insulation cover with the tape for sealing
heat insulators(to be locally procured).
・
Do the same with the gas pipe(large), using the heat-insulation
cover (large), as with the liquid pipe (small).
Note 1 : Install a heat insulator on every part of the refrigerant pipes
(to be locally procured).
If you want to use commercially-available heat insulators, use
heat-resistant heat insulators(at least 12mm thick).
Note 2 : The pipe covers shrink a little under high heat.
Therefore, allow for some wrapping margin in the heat insulators.
Horizontal direction Vertical direction
When outdoor unit is R22 type (MXZ-7A140VC), please connect three pipe⑥ to Gas pipe③ according to
Fig.1 .
① Manual
This one-sheet manual
② Liquid pipe
(small:Ǿ9.52)
X1 X1 X1 X1 X3
③ Gas pipe
(Iarge:Ǿ15.88)
④ Heat-insulation
cover(small)
⑤ Heat-insulation
cover(Iarge)
⑥ Pipe
(Gas pipe use:Ǿ15.88→Ǿ19.05)
Outdoor unit
2branches pipe(joint):optional part
explained by this manual
Branch box #1
Branch box #2
A A
A
B B B B B
ID Ǿ9.52
②Liquid pipe
(To outdoor unit)(To outdoor unit)
ID Ǿ9.52
(To Branch box)
③Gas pipe(When outdoor unit is R410A type)
ID Ǿ15.88 ID Ǿ15.88
(To Branch box)
To Branch box
Please do not make the following connection.
To Branch box
〈Prohibition〉
(Liquid pipe)
Tape
(to be locally procured)
Heat insulator
(to be locally procured)
(Note1)
Wrapping margin(Note2)Wrapping margin(Note2)
Heat-insulation
cover④
Within ±30゜
Within ±15゜
(To outdoor unit)(To outdoor unit)
(To outdoor unit)
(To outdoor unit)