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disturbed in the heating system, in order not to exceed the max boiler water
temperature.
For boiler protection from overheating, it is possible to install in its case
the safety cooling coil. When boiler heats over 95
°
C, temperature valve opens
and cold water flowing from water supply through the coil cools the boiler.
The cooling water is then directed to sewage through pipes no thinner than
those installed on exit from the coil (water has to flow freely to sewage).
Recommended cooling system connection is shown in the principal
diagrams of the boilerhouse
fig.
4a, 4d
.
Cover tightening scheme. Screw nuts gradually, in specified sequence
Fig.6.
a) cooling water discharge branch (G ¾)*
b) temperature sensor screwing socket (G ½)
c) cooling water supply branch (G ¾)*
* a and c connections can be inter-changed
During cooling coil installation:
•
After unscrewing the screws, take cover from
trimming shield (or brake perforation away);
•
After unscrewing nuts, take the blind away;
•
Replace sealing ring;
•
Insert and screw in cooling coil (
according to
directions in the figure
).
Temperature valve is connected to the cooling coil (
see recommended
boiler house connection layouts
). Temperature valve has to be connected with
no less than ¾ inch pipes, temperature sensor of the valve is inserted into
socket „
b
“ (
see fig.6
). Temperature valve used shall have the following
parameters
:
Min water temperature
10 ºC;
Opening temperature
97 ± 2º;
Max water temperature
110 ºC;
Max water debit
6,5 m³/h;
Max water pressure
10 bar.
If electric power supply is interrupted in the house with local water supply
system (water is supplied by hydrophore) boiler overheat can occur (stopped
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KALVIS - 2-30U, -2-40U 2012.02.06
Example
