Daikin BSVQ36PVJU Installation Manual page 14

Outside unit
TO IN/D UNIT TO OUT/D UNIT
F1 F2 F1F2
(1)
A
B
F1 F2 F1 F2
TO IN/D UNIT TO OUT/D UNIT
C
BS unit A
(1)
(1)
F1 F2 F1 F2
NOTE
1. Connect cooling-dedicated air conditioners to terminals F1 and F2 (TO OUT/D UNIT) of the final BS unit.
2. Use 2-core wire for the transmission wiring. Using a multi-core wire with 3 or more cores when two or more
indoor units are used at once could cause abnormal stoppage. (Only use 3-core wire in the COOL/HEAT
SELECTOR.)
3. Absolutely do not connect the power supply wiring to the transmission wiring terminal block. Doing so
could damage the entire system.
4. For the transmission wiring, use wire that is within the following ranges. Exceeding these limits could
cause a transmission error.
(1) Between an outside unit and BS unit,
Between a BS unit and indoor unit, and
Between a BS unit and BS unit
Maximum wiring length: 3280 ft or less
Total wiring length: 6560 ft or less
Branch point max: 16 branch points
(2) Between a BS unit and COOL/HEAT SELECTOR
Maximum wiring length: 1640 ft or less
7-5 WIRING CONNECTIONS
Remove the EL. COMPO. BOX lid on the side and follow the directions to connect the wires.
〈Transmission wiring〉
Remove the EL. COMPO. BOX lid and connect the wires to F1 and F2 (TO IN/D UNIT) and F1 and F2 (TO
OUT/D UNIT) transmission wiring terminals (control PCB (A1P)).
At this time, pass the wiring into the unit through the wiring through hole (left) and use the included clamps 2)
to securely hold the wires (in 2 places).
〈Power supply wiring and ground wire〉
Remove the EL. COMPO. BOX lid and connect the power supply wiring to
the power terminal block (X1M).
Also connect the ground wire to the ground wire terminal. Pass both the
power supply wire and the ground wire together through the wire through
hole (right) and into the EL. COMPO. BOX and use the included clamps 2) to
securely hold the wires (in 2 places).
Be sure to wire the ground wire so that comes out of the slit in the cup washer.
(Not doing so could cause insufficient ground wire contact and causing the wire not to function as a ground.)
13
Transmission wiring
Absolutely do not
connect the power
Use 2-core wires.
supply wiring.
(There is no polarity.)
(1)
F1 F2 F1 F2
(2)
TO IN/D UNIT TO OUT/D UNIT
BS unit B
(1)
A B C
F1 F2
COOL/HEAT
SELECTOR
Cooling/Heating selectable indoor unit
COOL/HEAT SELECTOR wiring
Use 3-core wires. (There is polarity.
Match the terminal numbers.)
(1)
A
B
F1 F2 F1 F2
(2)
TO IN/D UNIT TO OUT/D UNIT
C
Final BS unit
(1)
A B C
F1 F2
COOL/HEAT
SELECTOR
(1)
A
B
(2)
C
F1 F2
A B C
F1 F2
COOL/HEAT
SELECTOR
Cooling-dedicated
indoor unit
branch
Sub-branching
F1 F2 F1 F2
F1 F2
Cup washer
Ring-type crimp
style terminal
Cut out section
English
(1)
F1 F2
F1 F2