CAUTION
•
When fastening the wire, use the included clamp (Accessory (1)) so as not to apply tensile force to the
wire connection and then securely fasten the wire.
Also, after the wiring is completed, organize the wiring so that the control box cover does not pop up
and then properly replace the control box cover.
Make sure no wires are pinched when replacing the control box cover.
Always use the wire through hole to protect wires.
•
Do not pass the transmission wiring and power supply wiring
through the same locations, and outside of the unit keep them sep-
arated by at least 2 in. (50 mm).
Not doing so could cause the transmission wiring to pick up electric
noise (external noise) and result in a malfunction or breakdown.
• As shown in the figure on the right, wrap the transmission wiring
between each Branch Selector unit and indoor unit with finishing
tape (to be supplied in the field).
7 . INITIAL SETTING
7-1
Settings in the field
Follow the instructions below to set the DIP switches as necessary.
WARNING
Electric shock hazard! Before performing work, be sure to disconnect any power supply con-
nected to the unit .
Procedure
1. Disconnect the power supply.
2. Set the DIP switches (DS1, DS2) for the corresponding branch ports based on the following table.
3.
Once work is complete, be sure to close the control box cover.
BSF4Q
A
B
C
D
A1P
ON
OFF
ON
OFF
1 2 3 4
1 2
DS1
DS2
3 4
A B C D
Branch port number
Terminal No. to which to
connect transmission
wiring
DIP switch
Gas pipe
Transmission
wiring
Liquid
pipe
Finishing tape
Insulation material
24
English
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