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Kalvis 4 - Page 17

Kalvis 4
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- 17 -
KALVIS-4 (N) EN 2019.01.14
After the boiler reaches the desired operation
temperature (70 ÷ 90 °C, compared to thermo-
meter readings), set desired temperature with the
help of air adjustment handle.
Fig. 7. Air draft regulator
handle.
Desired boiler temperature is in line with the air
supply valve positions shown in fig. 7.
There is possible mismatch between regulator
handle position and thermomanometer readings.
Air draft regulator sensor is installed in the rear
part of the boiler, near the outflowing water branch
pipe, covered with easily removable lid. Before
connecting the boiler, check the lid for correct
positioning (see fig. 8).
Before operating the boiler, make sure that the air draft regulator operates
correctly. With the means of the regulator set the desired temperature;
during combustion process in the boiler (if heating system is setup correctly)
temperature can‘t rise by no more than 10 °C of set temperature
(temperature should be checked on thermometer, which should be installed
on outgoing water pipe (2, see 6a, 6b pics)). Air draft regulator could be
checked and adjusted as below:
Take off air supply grate (24) (see 1 and 9 pics)
Heat the boiler up to 80 °C
Set the air draft regulator (8) position to „80°“ (see pic 7)
Air supply valve should close. If valve did not close completely, then must
turn it until there is no gap between valve and boiler‘s frame (see pic 9).
Fix air supply valve (11) with a nut (see pic 9).
While rotating handle (see pic 7) to the position 90° (outer water
temperature from the boiler should be 80 °C), air supply valve must be
opened.
When boiler‘s temperature reach 90 °C (outer water temperature is
90 °C), air supply valve must close.
Fig. 8. Air draft regulator sensor.
Fig. 9. Correction of air draft regulator valve.