Mitsubishi SRK63ZM-S Technical Manual page 42

• When cables are connected, make sure that all electrical components within the electrical component box are free of loose connector coupling or
terminal connection and then attach the cover securely. (Improper cover attachment can result in malfunctioning or a failure of the unit, if water
penetrates into the box.)
• Never use a shield cable.
• SRC-ZMA-S and SRC-YMA-S complies with the DRED (Demand Response Enabling Devices) standard AS/NZS4755.3.1 and supports demand response
modes 1, 2, and 3 (DRM1, 2, and 3). Since the air conditioner limits the electric power or energy by receiving the DRED input signal, the sense of
cooling operation or heating operation may deteriorate over time. The outdoor unit of this air conditioner is equipped with a terminal block for DRED
input and supports ELV (Extra-Low Voltage) complying with AS/NZS60335.1.
SRC-ZM-S models
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.
• In case of SRC-ZM-S models, this clamp holds the
power cable and the indoor-outdoor connecting wire.
• In case of SRC-ZMA-S and SRC-YMA-S models, this
clamp holds the indoor-outdoor connecting wire and
the DRED cable.
Cable clamp
• Only SRC-ZMA-S and SRC-YMA-S models.
• This clamp holds the power cable.
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.
• Earth wire shall be
Yellow/Green (Y/G) in
color and longer than
other AC wires for
safety reason.
Power cable Indoor - Outdoor
connecting wire
INSTALLATION TEST CHECK POINTS
Check the following points again after completion of the installation, and before turning 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 installation manual.
After installation
Power cables and connecting wires are securely fixed to the terminal block.
The power supply voltage is correct as the rating.
The drain hose is fixed securely.
Operation valve is fully open.
No gas leaks from the joints of the operation valve.
SRC-ZMA-S models
Power cable, indoor-outdoor connecting wires
SRC-YMA-S models
SRC-ZM-S models
Safety
breaker
20A
Earth
Earth
leakage
circuit
breaker
Power
supply
• Always perform grounding system installation work with the power cord unplugged.
• Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
• In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
• Grounding terminals are provided in the control box.
CAUTION
Phase
Single-phase
• The specifications shown 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
regulations in each country.
Power cable
• The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
Indoor - Outdoor DRED cable
three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these
connecting wire (Demand response
conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
enabling devices)
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.
The screw of the side cover is tightened securely.
(yellow/green)
1.5 Section of copper wire (mm
SRC-ZMA-S models
SRC-YMA-S models
Outdoor unit Outdoor unit
N L 1 2/N 3 N L 1 2/N 3
Safety
breaker
20A
Earth
Earth
leakage
circuit
1 2/N 3 1 2/N 3
breaker
Indoor unit Indoor unit
Power
supply
When wire length When wire length
exceeds 30m, use exceeds 30m, use
2.5mm 2 wires. 2.5mm 2 wires.
Always use an earth leakage circuit breaker designed for inverter circuits to
prevent a faulty operation.
Switchgear or Circuit Breaker
Earth leakage breaker Over current protector
Switch breaker
rated capacity
20A, 30mA,
30A 20A
0.1sec or less
)
2
D1 D2 D3 C
*Demand
D1 D2 D3 C
response
enabling
DRED*
devices
Connecting cable between outdoor unit
and DRED shall be double insulation
layer, polychloroprene sheathed (>50V)
with size 4 x (0.5mm 2 to 2.0mm 2 )
cable or flexible cord, where the
maximum allowable length is 30m.
Interconnecting and
Power source
grounding wires
(minimum)
(minimum)
2.5mm 2 1.5mm 2 X 4