Mitsubishi Heavy Industries HMK60, Installation Manual

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Electrical installation
Electrical installation
General
Indoor unit must be installed via an isolator switch in accordance
with the local codes and regulations.
For HMK60, electrical equipments, except outdoor air sensor,
room sensor, current transformers and outdoor unit has been
connected at the factory.
■ Disconnect the indoor unit, outdoor unit and control unit
before insulation testing of the house wiring.
■ If the building is equipped with an earth-fault breaker,
Hydrolution should be equipped with a separate one.
■ For the electrical wiring diagram, see page 85.
■ Do not lay communication, sensor or signal cables for
external connection close to high voltage lines.
■ Minimum cross section of communication, sensor or signal
cables for external connection must be 0.5mm
2
up to 50 m,
for example EKKX, LiYY or equivalent.
■ Use screened three core cable for communication between
controller (RC-HY20/40) and indoor unit (HSB60/
HMK60).
■ When laying cables into indoor units and controllers, be
sure to route the cable grommet (UB1 AND UB2).
■ Be careful to route cables not to be damaged by metal edge
or trapped by panels.
■ Outdoor unit is equipped with a single phase compressor.
This means that phase L3 is loaded with up to 15 A during
compressor operation.
NOTE
Electrical installation and service must be carried out
under the supervision of a qualifi ed electrician.
Turn off the circuit breaker before carrying out any
servicing.
Electrical installation and wiring must be carried out in
accordance with the stipulations in force.
Make sure to turn off the power supply during
installation.
NOTE
Do not turn on the power on control until the boiler is
fi lled with water.
The circulation pump and immersion heater
may become damaged.
NOTE
If the power supply cable is damaged, only authorised
person may replace it to avoid danger or damage.
Principle diagram, electrical installation
HSB60
Electrical
distribution unit
Isolator switch
Power and sensor cable
Communication cable
PEN
FDCW60
(Outdoor unit) (Indoor unit) (Controller)
HSB60 RC-HY20/40 Electric
heater
Circulation
pump
3way
valve
L
1
L
2
L
3
Cable size
Power – Indoor unit 3core, 1.5mm
2
(power cable)
Power – Outdoor unit 3core, 2.5mm
2
(power cable)
Indoor unit – Outdoor unit
2core, 1.5mm
2
(communication cable)
Indoor unit – Controller
3core, 0.5mm
2
, LiYY, EKKX or
equivalent (communication cable)
The cable size shown on the above table is reference value.
Choose appropriate size according to local laws and regulations.
HMK60
Isolator switch
Power and sensor cable
Communication cable
FDCW60 HMK60 RC-HY20/40
Electrical
distribution unit
PEN L
1
L
2
L
3
(Outdoor unit) (Indoor unit) (Controller)
Cable size
Power – Indoor unit 5core, 2.5mm
2
(power/communication cable)
Indoor unit – Outdoor unit 5core, 2.5mm
2
(power/communication cable)
Indoor unit – Controller 3core, 1.5mm
2
(power cable)
3core, 0.5mm
2
, LiYY, EKKX or
equivalent (communication cable)
The cable size shown on the above table is reference value.
Choose appropriate size according to local laws and regulations.