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Before mounting of the boiler it is necessary to be
installed supply electric cable with main switcher and
with over current circuit breaker including starting
inspection revise and to have confirmed application for
electric power take-off.
Electric boilers are ranged in appliances continuously
connected to electric circuit of network voltage. In the fix
supply cable of the boiler there has to be in-built main
switcher with distances of all disconnected cables min. 3
mm. The boiler is connected by corresponding cables to
switch board X1 according to the diagram 1.7. Inlet of
cables through the cover of boiler is carried out with
bushing. The bushing PG21 is for main supply inlet of the
boiler. Other bushings PG9 are for other signals room
thermostat, 3ways valve.
Recommended size of circuit breaker and diameters of
conductors:
Size of circuit
Type of connection
breaker
3x230/400 V
3x16 A
1x230 V
1x40 A
Maximal diameter for switch board connection is
2
EK 10 mm .
3.4.2 Installation of the room thermostat
†Connection of the room thermostat is necessary to do
with twin core cable with recommended diameter from
0, 5 to 1, 5 mm2 with length to 25 m.
†The cable for the room thermostat is not allowed to be
placed in the same way with supply cord or another
electric or industrial installation. Minimal separation is
10 mm.
†The switch board for the room thermostat connection
(24 V) is placed in the left part of the control unit from
front face and the second switchboard from the top
with marking TER, the room thermostat has clamps
with bridge from the production.
3.4.3 Installation of 3-ways valve for heating of
service utility water in the storage water
†Connection of 3-ways is carried out according to the
diagram 1,7 to the switch board X2. The conductor of
service utility water signal 230 has to be minimally Cu
1mm2 thick. The cable of valve is an accessory = the
part of delivery.
3.5 Heating system
The pipe system of heating system has to be made to
avoid forming of air bubbles and to make easy the
process of deaeration. Dearation valves have to be
placed on each highest heating system place and on all
the radiators. We recommend making the heating pipe
from copper, but also it is possible to use steel or plastic
pipes determined for heating system. Plastic pipes have
to fulfil requests of heating resistance and have not to
Diameter of
Diameter of copper
aluminium cable in
cable in mm
mm
3x2,5
3x4
1x6
1x10
loose parts in the heating water to avoid paralysation of
regulation and safety function components,including the
pump.The boiler has to be installed in opened or closed
heating system according to the normative conditions
(overpressure of heating system,maximal volume of h.
The boiler could be used for underfloor heating, minimal
temperature of heating water is 30 °C. The boiler has not
equipped by the sensor of maximal temperature of
heating water for underfloor heating.
Using of defrost mixture
We don´t recommend to use defrost mixtures due to
their characteristics, some of them are not convenient
for the boiler operation, concretely reducing of heat
transmission, big volume elasticity, ageing, breakdowns
of rubber parts. It is necessary to think about to use them
inevitable. Regarding inevitable situation it is allowed to
use the defrost mixture Alicol Termo according to
experience of the producer that the boiler operation is
not reducing.
If you are not able to use this defrost mixture and you will
protect your heating system with another defrost mixture
then guarantee claim will not be accepted.
3.6 Expansion vessel
Installation
Expansion vessel is not assembled in the boiler, it is
necessary to use and mount it separately in the heating
system by professional company. Installation has to be
carried out on the suction inlet of the pump.
Dimension
Expansion vessel eliminates dilatability of heating
medium in the heating system; therefore it is necessary
to choose its sufficient volume. Size of expansion vessel
is specified by the project specialist of heating system
drawing. You can use for information about minimal
volume of expansion vessel below mentioned curve.
Curve is depended on temperature gradient 80/60°C a
there are 3 curves for pressures of cold heating system
0,5, 1 and 2 bars. It is recommended to use the first
bigger volume of standard expansion vessel for
specification of minimal volume of expansion vessel.
Curves are valid on condition that you use safety valve
set on 3 bars.
15
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