14
A
B
C
2.
Before commencing with assembly, repair or maintenance works and when
performing all connections, it is necessary to disconnect power supply from
the device and verify that power lines are disconnected from mains.
3.
Boiler house shall be equipped with 230V/50Hz electric installation,
compatible with relevant regulations applicable in this scope.
4.
The electric installation (regardless of its type) shall be terminated with a
power receptacle equipped with a protective earth terminal.
Use of power
receptacles without properly wired protective earth terminal will
constitute electric shock hazard!!!
5.
The boiler shall be connected to a separately installed power supply line,
protected with suitably chosen fast-blow fuse and differential-current circuit
breaker (shock protection). The value and the type of the fuse is defined in
the controller’s operational documentation.
No other equipment must be
connected to this line.
6.
The box, in which electric accessories are contained, may only be opened by a
competent electric engineer, knowledgeable with the equipment operation.
7.
Location of the power receptacle used for the boiler connection shall be
selected in such a way so that the plug is easily accessible to allow quick
boiler disconnection in case of an emergency.
8.
Wires shall be routed away from the parts of the boiler that may get hot, and
in particular away from hot elements of the flue breeching.
9.
The controller must not be exposed to flooding or to conditions causing
vapour condensation, e.g. rapid ambient temperature changes.
10.
The controller must not be operated if its enclosure is damaged.
11.
Protect the controller against access of children.
12.
During thunderstorms, the controller shall be disconnected from mains.
2.6.1 Boilers rated 10 to 30 kW
Unica SENSOR
boilers rated 10 to 30 kW have preinstalled air supply
system, which consists of the following elements:.
(ref. fig. 3).
Other parts used to connect power supply and pumps driven by the controller are
located in the box attached to the boiler.
