Mitsubishi Heavy Industries SRK20ZIX-S Service Manual page 25

Power supply terminal block
Cable clamp
It holds cables in place and protect the terminal
•›
connection from external force.
This clamp is for the cable in the outside
•›
diameter 9~15mm.
Please adjust it when not suitable.
Cable name plate
•› It has stuck on the lid of a control box.
Grounding terminal
•› Please be sure to carry out D-type (type III)
grounding work.
Indoor - Outdoor Power cable
connecting wire
power cable, indoor - outdoor connecting wire circuit diagram
INSTALLATION TEST CHECK POINTS
Check the following points again after completion of the installation, and before turnig on the power. Conduct a test run again and ensure that the unit operates properly.
Explain to the customer how to use the unit and how to take care of the unit following the instruction manual.
After installation
Power cables and crossover wires are securely fixed to thet erminal block.
The power supply voltage is correct as the rating.
The drain hose is fixed securely.
Operational valve is fully open.
No gas leaks from the joints of the operation alvalve.
Power cable, indoor-outdoor connecting wires
Earth leakage breaker
(Harmonic resistant type)
Switchgear or Circuit breaker
N L
1 2/N 3
1 2/N 3
X Y
CAUTION
Please connect the earthed line of indoor and outdoor
connecting wire to a bracket part of the illustration.
The pipe joints for indoor and outdoor pipes have been insulated.
The reverse flow check cap is attached.
The cover of the pipe cover (A) faces downward to prevent rain from entering.
Gaps are properly sealed between the pipe covers (A) (B) and the wall surface / pipes.
•œ Always perform grounding system installation work with the power cord unplugged.
Always use an earth leakage circuit breaker designed for inverter circuits to
CAUTION
prevent a faulty operation.
Earth leakage breaker
Phase Model
Switch breaker Over current protector
Outdoor unit
20
15A,30mA,
Single-phase 25
0.1sec or less
Indoor unit
35
•œ The specifications show in the above table are for units without heaters. For units with heaters,refer to
the installation instructions or the construction instructions of the indoor unit.
Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
•œ
regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
•œ
three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these
conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
Switchgear or Circuit Breaker
Interconnecting and
Power souce
grounding wires
(minimum )
(minimum )
rated capacity
2.0 1.5 2 ×4
30A 16A 2 mm
mm