Carrier XCT7 40VU0051-7E-QEE - Page 27

The wiring for the power line of the indoor unit, the wiring between indoor and outdoor units, and the wiring between
indoor units:
• The electrical power line and signal lines must be fastened tightly.
• Every indoor unit must have a ground connection.
• The power line should be enlarged if it exceeds the permissible length.
• Shielded lays of all the indoor and outdoor units should be connected together, with the shielded lay at the side of the
signal lines of the outdoor units grounded at one point.
• The whole length of the signal line should not exceed 1000m.
Electrical Wiring
Indoor Units PCB
In the following table, 1 represents ON and 0 represents OFF.
Denition principles of code switches:
SW01 is used to set capabilities of master and slave indoor units as well as indoor unit; SW03 is used to set indoor unit
address (combine original communication address and address of centralized controller).
SW01_1
SW01_2
SW01_3
SW01_4
Address of wire
controlled indoor unit
[1] [2] [3] [4] Address of wire controlled indoor unit (group address)
0 0 0 0 0# (wire controlled master unit) (default)
0 0 0 1 1# (wire controlled slave unit)
0 0 1 0 2# (wire controlled slave unit)
0 0 1 1 3# (wire controlled slave unit)
0 1 0 0 4# (wire controlled slave unit)
0 1 0 1 5# (wire controlled slave unit)
∙∙∙ ∙∙∙ ∙∙∙ ∙∙∙ ∙∙∙
1 1 1 1 15# (wire controlled slave unit)
SW01_5
SW01_6
SW01_7
SW01_8
Capability of indoor unit
[5] [6] [7] [8] Capability of indoor unit
0 0 0 0 0.6HP (AB05)
0 0 0 1 0.8HP (AB07)
0 0 1 0 1.0HP (AB09)
0 0 1 1 1.2HP (AB12)
Dipswitch Setting
(A) Denition and description of SW01
Items
Total Current of
Indoor Units(A)
Cross
Section
(mm2
Length (m) Rated Current
of Overow
Breaker(A
Rated Current of Residual Circuit
Breaker(A) Ground Fault Interrupt-
er(mA) Response time(S)
Cross Sectional
Area of Signal Line
Outdoor -indoor
(mm2)
Indoor -indoor
(mm2)
<10 2 20 20 20 A,30 mA,0.1S or below
2 cores×0.75-2.0mm2
shielded line
≥10 and <15 3.5 25 30 30 A,30 mA,0.1S or below
≥15 and <22 5.5 30 40 40 A,30 mA,0.1S or below
≥22 and <27 10 40 50 50 A,30 mA,0.1S or below
Signal Wiring of Wired controller
• The shielding lay of the signal line must be grounded at one end.
• The total length of the signal line should not be more than 250m.
Length of Signal Line (m) Wiring Dimensions
≤ 250 0.75mm2 × core shielding line
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