16
7.1
Firing
1.
Check the water volume in the heating system on the thermomanometer.
2.
Open the shut-off valves between the boiler and the heating system.
3.
Clean-up the space in the bottom part of the combustion chamber (the space in front of the nozzle),the fire grate, the ash-pan, flue-gas
channels and the boiler walls.
4.
Put cleft firewood on the bottom fire grate up to the high of the sloping fire grate to avoid closing the hole in the bottom part of the
combustion chamber (fig. No.. 22).
5.
Put a pale from kindling to these prepared firewood (as close as possible to the shortening tilting shutter).
6.
Insert fire-ignitor onto the kindling and kindle it (fig. No. 21). You may also put some kindling onto the flame to ensure more intensive
inflammation.
Fig.
№
. 21
Kindling from basis
7.
With help of the control lever, open the shortening tilting shutter above the throttle valve of the stocking door (it will ensure withdrawal of
flue gases through the shortening hole into the chimney; and – as a result of it – the chimney will be heated-up).
8.
Adjust the upper throttle valve of primary air supply in the front part of the boiler into the maximum opening position.
9.
Keep closed the bottom throttle valve of air supply under the fire grate, or adjust it into the position of the opening at the most of 1-2 mm.
10.
Close the stocking door of the boiler and keep fire burning.
11.
When flame starts disappear and only glow basis remains, open slowly the stocking door and add fuel as needed.
12.
Leave the newly added fuel burn-up, close the shortening tilting shutter, and adjust the upper throttle valve of primary air supply with help
of the regulator as needed.
13.
In case of heating-up with pit-coal, adjust the set-screw of the bottom throttle valve of secondary air supply under the fuel by 2 to 3 mm. In
case of heating-up with firewood and brown coal, keep closed the bottom throttle valve.
From the reason of thermal features of cast-iron, the operation characteristics of the Hercules U32 boiler is different from boilers with a
steel boiler body. Heating to the operation temperature lasts longer, but after the boilers are heated-up, they have higher thermal inertia.
Fig.
№
. 22
Firing in Hercules U32 boiler
