Connecting the supply
Incoming electricity supply must be connected to terminal
block (X1) in HM 8-12 SPLIT via cable gland (UB1). The
cable must be dimensioned according to the applicable
norms.
HM 8-12 SPLIT can be connected with either 400 V 3NAC
or 230 V 1AC.
400 V 3NAC: Connect incoming supply according to the
markings on terminal block (X1).
NOTE
Depending on the house's main fuse and to avoid
the load monitor slowing down the compressor,
other loads in the house should be moved from L3
to L1 and L2.
230 V 1AC: Install the enclosed straps between terminal
blocks L1 and L2 as well as between L2 and L3 on incoming
terminal block (X1). Connect supply according to the ter-
minal block markings.
Miniature circuit-breaker
The automatic heating control system, circulation pumps
and their wiring in HM 8-12 SPLIT, are internally fuse pro-
tected with a miniature circuit breaker (FA1).
Outdoor module L8 SPLIT/L12 SPLIT and equipment are
internally fuse protected in HM 8-12 SPLIT, by a miniature
circuit breaker (FA2).
Temperature limiter
The temperature limiter (FD1) cuts the current supply to
the electrical addition if the temperature rises between
90 and 100 °C and can be manually reset.
Resetting
The temperature limiter/emergency mode thermostat
(FD1-BT30) is located in the tanks' electrical connections.
The temperature limiter is reset by firmly pressing in its
button.
NOTE
Reset the temperature limiter, it may have tripped
during transport.
Connection between HM 8-12 SPLIT and L8
SPLIT/L12 SPLIT
NOTE
L8 SPLIT/L12 SPLIT must be earthed before the wiring
between the units is connected.
The wiring must be attached so that the terminal
block is not put under stress.
Stripped length of conductor is 8 mm.
L8 SPLIT
Connect phase (brown), neutral (blue), communication
(black and grey) as well as earth (yellow/green) as illus-
trated:
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