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Curves
Dependency of expansion vessel volume and volume of heating system for temperature gradient 80/60°C
25
20
15
15
10
5
0
40
Filling overpressure of expansion vessel
It is necessary to observe overpressure of nitrium filling
for right function of expansion vessel in cold status of
heating system according to formula:
Pex = 1,2*Pov (pressure of expansion vessel =
1,2*pressure of heating water
Overpressure changes of nitrium filling of
expansion vessel could be carried out only by
responsible persons or professional companies.
†User has obligation to assure minimally 1 x per year to
operation control and 1x per 9 years pressure control
built-in expansion vessel or additional independent
expansion vessel.
Minimal overpressure of heating water
Value of minimal pressure is stated in the table 1.5.
Minimal overpressure has to be signed on the thermo
manometer scale by person putting the boiler into
operation. The overpressure has not to degrease under
position marked on the scale. It is necessary sometimes
to control
and if it is necessary to fulfil filling
overpressure of heating water.
Filling overpressure of heating water
Normally it is observed in case of first filling of heating
system or in case of filling of minimal overpressure fall of
heating water. Filling overpressure is + 0,2 bar higher
than minimal overpressure specified for reason that
temperature off filling water could be to 20°C (water
dilatability).
3.7 Marking of working scale
On the pressure meter placed under the boiler there is
necessary to mark working scale that the pointer of
pressure meter is moving in. Minimal pressure is marked
by responsible person put the boiler into operation by
pressure meter marking.
Maximal margin = maximal overpressure of heating
Heating system pressure 2 bars
60
80
100
Volume of heating system
Heating system pressure 1 bar
120
140
160
water in time of reaching of maximal temperature of
heating water.
3.8 Circle pump
†
The boiler has circle pump with 3 output grades.
†
The pump operation is controlled by control unit
depended on boiler regulation and safety requests.
†
The pump operation is controlled by control unit
depended on boiler regulation and safety requests.
†
Time running out of the pump make possible to take
away heat accumulated in the boiler body in time of
switching off the boiler. The effect is decreasing of
losses, removing of temperature tops, reducing of
stone and elongation of boiler life time.
†
Time running out of the pump is preset from the
production facility according to the point 2.4
†
The pump is protected against blocking in operation
mode Stand-by. (see the chapter Protection
functions). If the boiler is for longer time out of its
operation switched off, we recommend you to switch
on the boiler sometimes, minimally 1x per month (see
the chapter protection of function).
Electric data of the pump
Output
P (W)
1
grade
1
50
2
60
3
70
P1 -pump input
I - electric current
Heating system pressure 0, 5 bar
.
180
200
I (A)
0,22
0,27
0,31
16
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