42
■
Consult your power supply utility, which may offer dif-
ferent supply tariffs for the main power circuits.
Observe the technical connection requirements of
the power supply utility.
■
If the compressor and/or instantaneous heating
water heater (if installed) are operated at an econ-
omy tariff (power-OFF), provide an additional cable
(e.g. 3 x 1.5 mm
2
) for the power-OFF signal from the
distribution board (meter box) to the heat pump con-
trol unit.
or
Combine the cable for the power-OFF signal and for
the heat pump control unit power supply
(3 x 1.5 mm
2
) in a single 5-core cable.
■
The assignment of the power-OFF (for compressor
and/or instantaneous heating water heater) occurs
via the type of connection and via parameter settings
in the heat pump control unit.
In Germany, the power supply can be cut for a maxi-
mum of 3 x 2 hours per day (24 h).
■
The
heat pump control unit/PCB
must be supplied
without
power-OFF. Tariffs subject to possible shut-
down must not be used here.
■
When using power generated on site (use of power
generated by the PV system to meet own require-
ments):
During the power-OFF period, it is
not
possible to
operate the compressor with power generated on
site.
■
Protect the power cable for the heat pump control
unit with an MCB/fuse of max. 16 A.
■
For accessories and external components that will
not be connected to the heat pump control unit, pro-
vide the power supply via the same MCB/fuse, or at
least on the same phase, as the heat pump control
unit.
Connection to the same MCB/fuse provides addi-
tional safety when the power is switched off.
Observe the power consumption of the connected
consumers.
■
If the power supply to the appliance is connected
with a flexible cable, ensure that the live conductors
are pulled taut before the earth conductor in the
event of strain relief failure. The length of the earth
conductor wire will depend on the design.
Information regarding the compressor power sup-
ply
■
!
Please note
Incorrect phase sequence can cause damage
to the appliance.
Make the compressor power supply
only
in
the phase sequence specified (see terminals)
with a
clockwise
rotating field.
■
Characteristics of the compressor power MCBs: See
"Specification".
Heat pump control unit power supply 230 V~
L1
X3.18
N
X2.1
?
X1.1
A
1/N/PE
230 V/50 Hz
max.16 A
Fig. 31
A
Mains terminals inside the heat pump control unit
Note
This supply must
never
be blocked.
■
Max. fuse rating 16 A
■
Standard tariff: No economy tariff with power-OFF
possible for the heat pump control unit
■
Recommended power cable:
3 x 1.5 mm
2
■
Recommended power cable with power-OFF for
compressor/instantaneous heating water heater:
5 x 1.5 mm
2
Compressor power supply 400 V~
■
Economy tariff and power-OFF can be used
■
No parameters need to be set when using economy
tariff with power-OFF. The compressor is shut down
during the power-OFF time.
L1
400 V/50 Hz
?
L2
L3
N
PE
3/N/PE
L1
L2
L3
N
Fig. 32
Installation sequence
Power supply
(cont.)
5516461
Installation
Summary of Contents for BW 301.B06
Page 69: ...69 Fig 49 Maintenance Opening the casing door 5516461 Maintenance...
Page 76: ...76 Maintenance Condensation and moisture in the heat pump cont 5516461 Maintenance...
Page 79: ...79 Parts lists type BWC 301 B Parts not shown type BWC 301 B cont 5516461 Components...
Page 88: ...88 Parts lists type BWC 301 B Hydraulics type BWC 301 B cont 5516461 Components...
Page 91: ...91 Parts lists type BW 301 B Parts not shown type BW 301 B cont 5516461 Components...
Page 100: ...100 Parts lists type BW 301 B Hydraulics type BW 301 B cont 5516461 Components...
Page 103: ...103 Parts lists type BWS 301 B Parts not shown type BWS 301 B cont 5516461 Components...
