25
2.9
Electrical connections
2.9.1 Connection to the mains
The
Open Hybrid Mem ErP
appliance and the
Heat Pump
must be
connected to the mains network
independently
in compliance
with the applicable technical Regulations and national and lo-
cal legislation in force.
m
WARNING
Each connection to the mains network must:
– Use an omnipolar cut-off switch
– Disconnect switch, in compliance with EN Stand-
ards
– Respect the connections L (Live) - N (Neutral)
– Connect the earth wire to an effective earthing sys-
tem. The manufacturer is not responsible for any
damage caused by failure to earth the appliance or
failure to observe the information provided in the
wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
2.9.2 Component connections
The
Open Hybrid Mem ErP
appliance is equipped with an elec-
trical panel to which the following cables have been wired in
the factory:
– Low Temperature System Pump Cable (PI)
– Domestic Hot Water Pump Cable (PS)
– Heat Pump Diverter Valve Cable (VD)
– Automatic Filing Valve Cable (CA)
– Connection Cable to Mem Remote Control (RJ12)
– Low Temperature System Safety Thermostat Cable (TS)
– OpenTherm Cable (OT) to be connected to the boiler terminal
board (terminals 5 and 6)
Inputs for the electrical
connection cables
Side
Rear
Fig. 30
m
WARNING
To facilitate the electrical connections, hook the panel
to a clip on the domestic hot water storage tank.
To make the connection cables enter the inside of
the built-in frame, use the designated openings pre-
arranged in the lower part of the frame (see
“Fig. 30”
on page 25
)
To make the connection cables enter the inside of
the panel, use the prearranged openings (1) (see
“Fig. 31” on page 25)
.
The main power cable and the boiler power cable must pass
through the PG type restricting cable glands.
The other cables must pass through the prearranged openings
which are to be appropriately drilled and must be secured using
the free cable-lock at the bottom of the electrical panel.
1
Fig. 31
2.9.3 Boiler connections
The connections to be made are:
– the electrical power connection, already connected t the
boiler, to the Open Hybrid Mem ErP electrical panel.
– the external sensor (optional) and the communication cable
(OT) to the boiler terminal board.
SE
OT
SAUX
6
5
4
3
2
1
Fig. 32
All connectors pre-cabled to the electrical panel are marked with
the symbol to identify the device which is to be connected (see
water circuit diagram).
Summary of Contents for Open Hybrid MEM 25-006
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