Mitsubishi Heavy Industries HMK60, Installation Manual

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53
Electrical installation
RC-HY40
Load monitor
In case many power electrical appliances are connected in the
property and the electric heater is energised at the same time,
there is a risk of tripping the main fuse of the property.
The control module has an integrated load monitor that controls
the power steps of the electric heater by disconnecting step by
step in the event of overload in a phase. It will be reconnected
if other current consumption is reduced.
Connecting current sensors
A current sensor (BE1 - BE3) should be installed on each
incoming phase conductor in to the electrical distribution unit
to measure the current. This is best done in the electrical
distribution unit.
Connect the current sensors to a multi-core cable in an
enclosure next to the electrical distribution unit. Use a multi-
core cable of at least 0.5 mm² from the enclosure to the heat
pump.
Connect the cable to terminal block X4:1 to 4.
X4:1 is the common terminal block for the three current
sensors.
Set the size of the property's main fuse in menu 5.1.12.
Inkommande el
N E P L
1
L
2
L
3
Värmepump
Control module
Incoming electricity
6 5 4 3 2 1
SMO
Externt
External
RC-HY 40
BE3
BE2
BE1
AA3-X4
RC-HY40
AA3-X4
Electrical distribution unit Electrical distribution unit
For details of connecting the pump, refer to External pump
control (GP10).
NOTE
Mark up any junction boxes with warnings for external
voltage.
myUpway
™
Connect the network connected cable (straight, Cat.5e UTP)
with RJ45-contact (male) to contact AA4-X9 on the display
unit (as illustrated). Use the cable grommet (UB2) in the
control module for cable routing.
AA4-X9 -