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Electrical installation
GENERAL
Electrical installation and wiring must be carried out in
accordance with national provisions.
NOTE
Electrical installation and any servicing must
be carried out under the supervision of a quali-
fied electrician. Disconnect the current using
the circuit breaker before carrying out any ser-
vicing.
20
Chapter 3 | For the Installer
SENSORS
VPB S300 can be supplemented with up to two hot
water sensors, one for display and one for control. The
displaying sensor (BT7) is fitted at the factory and placed
in a submerged tube (UA1), the controlling hot water
sensor is placed in the submerged tube for control
sensor (UA2). In cases where it is only possible to con-
nect one sensor, use the submerged tube for the con-
trolling sensor (UA2).
VPBS S300 can also be supplemented with a sensor for
an external heat source (BT54). This is placed in the
submerged tube for the external heat source (UA3).
Use the sensors provided with the heat pump/control
module. When no heat sensors have been provided
these must be ordered from the manufacturer of the
heat pump/control module.
The figure shows VPBS S300.
UA1
BT7
UA4
UA5
UA2
UA3
NIBE VPB S/ VPBS S
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