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54
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'11 • KX-T-166
* Tighten the service valve
to the following torques.
30 N·m
11~13 N·m
Service valve cap
Check joint cap
Initial branch
Less than
3 m
Service valve kit
Service valve A
Service valve C
Service valve B
To indoor unit
To outdoor unit
Level
Level
150
430
150
300
20
63
Panel
Open the cover when
operating the service
valves A, B and C at
the inside.
B
PCB012D021A
3. REFRIGERANT PIPING
2. INSTALLATION OF SERVICE VALVE KIT
Indoor unit
Outdoor unit
Indoor unit
Selection of installation place
Request
٤
Where the service spaces shown in the figure at right are available.
٤
Use new pipes to connect between the service valve kit and the outdoor unit. It is prohibited to
use existing pipes.
Restrict the actual pipe length no longer than 3 m.
Pipe connection
٤
When the size of connecting pipe is not same as the pipe diameter (ø25.4) of the service valve
kit, use a joint of which size is different at both ends. (Work at site)
٤
Install the service valve kit at the same level as or lower than the outdoor unit.
٤
Connect the service valve kit and the outdoor unit with actual pipe length no longer than 3 m.
٤
Install it on the main pipe between the outdoor unit and the initial branch. (See following figure.)
٤
Close the panel after connecting pipes. (During the washing operation, open the cover to control
the service valves.)
٤
On the gas pipes of the service valve kit, the marking “To outdoor unit” is indicated on the gas
pipe at outdoor unit side and the marking “To indoor unit” gas pipe is indicated on the gas pipe
at indoor unit side. Be sure not to misconnect the gas pipes.
٤
It is not necessary to connect to the liquid pipe.
٤
Before connecting the pipes, make sure to open the panel and close the service valves A and C
while open the service valve B.
٤
Make sure to substitute with nitrogen gas when doing brazing.
٤
When a pipe has been connected by means of brazing, make sure to heat insulate the pipe.
(1) Fix the kit securely using the fixing holes (for M10 bolt) at four places shown in the figure at right.
(2) The service valve kit cannot be installed upside-down.
Install the main unit at level such that the labels attached to the pipes are positioned upward.
