Kalvis 4 - Boiler Ignition; Air Draft Regulator Control

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6.2. Boiler ignition
Before firing the boiler, check the following:
• After installation of the boiler and after each cleaning, make sure that the
cleaning lid is tightly set.
• Check chimney for clogging after longer periods of non-use;
• Check rings covering the heat-plate holes for correct fitting.
• Check hinges for easy opening-closing.
• Check the doors for closing tightness, if not, correct or replace sealing
ropes.
Combustion and draft efficiency depends on all this.
Before firing the boiler, fully open smoke draft and firing valves. Add
chopped fuel on firegrate in the combustion chamber through the combustion
chamber door and internal cast iron door.
When combustion is good, refill the combustion chamber with more
coarse fuel (how to refill see below: “Combustion chamber refuelling”).
Close the door, adjust the combustion intensity with the air draft controller.
The chimney draft can be lowered by smoke draft valve.
In the case of poor draft, in bad weather conditions, it is recommended to
open the smoke draft valve completely when the boiler is started, and after
the chimney warms up and draft improves, to close the valve.
Finer split firewood burns more efficiently and boosts boiler power.
If coal is fired, take 5 - 10 kg of firewood and add 10 cm of coal. Add coal
by layers several times, depending on the quality of the fuel and the amount
of heat you want.
After starting the boiler for the first time, when its body heats up and paint
finally cures, volatile substances with unpleasant smell are released, so
adequate ventilation of the premises is necessary
In the beginning of boiler operation, when firewood burns, condensate
sets on the inner walls, when they are still free of soot layer, giving an
impression that the boiler is leaking. Condensate disappears (when return
water reaches 60  C) after 1 – 2 hours of stoking, depending on stoking
intensity and moisture of the fuel used. In order to make sure that boiler is
sealed, fire it for 1 – 2 hours intensively with dry firewood, then stop firing
and look for condensate volume. If it stops growing, the boiler is sealed.
6.3. Air draft regulator control
Automatic air supply adjustment valve is installed in the boiler. After the
boiler reaches the desired temperature (according to regulator handle
positions, see fig. 7), air supply hole closes automatically and combustion
intensity decreases.