Daikin BRR9B1V1, Руководство по установке

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7 | Electrical installation
Installation manual
20
BRR9B1V1
Communication box
4P617761-1 – 2020.04
7.6 To connect the transmission wiring
7.6.1 Between communication box and outdoor unit
INFORMATION
▪
Mind the maximum length of the transmission wiring. Otherwise transmission
errors might occur.
▪
Use sheathed vinyl cords or cables (2 cores).
▪
Use ONLY 2-core cables. Do NOT use cables with 3 or more cores, otherwise
transmission errors might occur.
Prerequisite: Use DIII weak current wire.
Prerequisite: Cut the end portion of the transmission wiring that has to be
connected. Strip insulation from the wire before connecting it to the terminal block
(X3M).
Prerequisite: Twist the wires together before connecting the wires.
1 Connect F1 and F2 of the X3M terminal block of the communication box to F1
and F2 (TO OUT/D UNIT) of the X1M (A1P) terminal block of the outdoor unit.
2 Connect F1 and F2 (TO OUT/D UNIT) of the X1M (A1P) terminal block of the
outdoor unit to F1 and F2, respectively, of the terminal block of the capacity
up unit.
7±2 mm
a
X3M
c
b
7‒1 Cut, twist, and connect the wire to the terminal block
a Sheath
b Twist together before connecting.
c Connect to X3M.
7.6.2 Between communication box and monitoring system
NOTICE
Mind the polarity of the transmission wiring.
See also "7.1 General overview of the field wiring" [
4
16].
Prerequisite: Use RS‑485 weak current wire.
Prerequisite: Cut the end portion of the transmission wiring that has to be
connected. Strip insulation from the wire before connecting it to the terminal block
(X3M).
Prerequisite: Use wires with the same diameter and twist the core wires together
before connecting the wires.
1 Connect wires from A+ and B– of the terminal block of the communication box
to the monitoring system.
2 Connect the wires to the X3M terminal block in the same way as
"7.6.1 Between communication box and outdoor unit" [
4
20].