Carrier XCT7 40VU0051-7E-QEE, Installation And Owner'S Manual, Page: 25 / 156

Electrical Wiring
4.Electronic control box connection operation method
First, remove the screw of the fixed electric control box, pull out the electric control box, and then remove the electric control box
cover fixing screw, take off the electric control box cover (both hands press and hold the button at the same time). Signal line
through the machine through the hole, and then through the electronic control box hole into the box body, pay attention to the
separation of strength. Connect the electric control box cover and push the electric control box back to the machine. Use screws to
fix.
Cover
screw
The electric
control box cover
fastening
Two screws for fixing box
Power cord (as shown in
the line through the clamp
and press)
Communication line
(as shown in the line
through the clamp and
press)
Weak current
Strong electricity
• Indoor and outdoor units should be connected to the power source separately. Indoor units must share one single
electrical source, but their capacity and specifications should be calculated. Indoor and outdoor units should be
equipped with power leakage and overflow breakers.
Supply Wiring Drawing
Outdoor 1 Outdoor 2 Outdoor 3
Indoor 1 Indoor 2 Indoor 3
Supply: 3N~,380-400V,50/60Hz
Supply: 1PH,220-230V~,50/60Hz Supply: 1PH,220-230V~,50/60Hz Supply: 1PH,220-230V~,50/60Hz
Supply: 3N~,380-400V,50/60Hz Supply: 3N~,380-400V,50/60Hz
Circuit Breaker Circuit Breaker Circuit Breaker
Circuit Breaker
Circuit Breaker Circuit Breaker
Ground Fault Interruptor Ground Fault Interruptor Ground Fault Interruptor
Ground Fault Interruptor
Ground Fault Interruptor Ground Fault Interruptor
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