2. Setting when joining branch ports
Setting
Setting when joining branch ports
(Example 2)
(Example 2)
When joining the A and B
branches
ON
OFF 1 2
DS2 (A1P)
3 4
DIP switch setting
ON (Joined)
OFF (Factory default)
DIP switch No.
DS2
(A1P)
DS2
(A2P)
DS2
(A3P)
1
2
1
2
1
2
BS4Q54TVJ
Target branch port
A and B units joined
C and D units joined
BS6Q54TVJ
E and F units joined
BS8Q54TVJ
G and H units joined
BS10Q54TVJ
I and J units joined
BS12Q54TVJ
K and L units joined
When joining branches, only the branch port combinations shown in the above table can be used.
(For example, units B and C cannot be joined.)
8. ADDING AN ADDITIONAL CHARGE OF REFRIGERANT
Follow the instructions in the installation manual that came with the outdoor unit to add an additional
charge of refrigerant.
9. CHECK OPERATION AND TEST OPERATION
1.
Verify that the control box cover is closed.
2. Refer to the installation manual included with the outdoor unit and conduct a check and a test run
after all the work on the Branch Selector unit and outdoor and indoor units is completed and the oper-
ational safety of the units is confirmed.
•
You will hear the motor operated valve operating for about 90 seconds as it is automatically initial-
ized (closed) after power is turned on, but this is not a problem.
• System malfunctions can be verified by means of the following methods:
Indication on the indoor operation remote controller
Overall system malfunctions, including of the Branch Selector unit, can be identified using the LCD
malfunction display on the operation remote controller. For more information about the malfunction
display and its significance, refer to the service precaution name plate affixed to the indoor unit and
the user manual included with the outdoor unit.
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