Description; How To Choose The Right Size Of A Boiler - ATTACK FD20 Instructions For Use Manual

5 DESCRIPTION

Boiler construction
The main part of the boiler is a cast-iron - element boiler body produced of grey cast iron ac-
cording to STN EN 1561
- middle elements – quality 150
- front and rear elements – quality 200
Pressure parts of the boiler suit to the requirements for tightness by standards:
STN EN 303-5:2000 Boilers for Central Heating, Part 5: Boiler for central heating for solid fuel with
manual or automatic delivery with nominal output up to 300 kW terminology, requirements,
testing and marking.
The boiler body is composed of elements with the help of pressed nipples of 56 mm diameter,
ensured by anchor bolts. The elements create combustion and ash collection space, water space
and convection part. Inlet and outlet of heating water is situated in the rear part of the boiler.
The whole boiler body is insulated by a mineral insulation not harmful for health that eliminates
losses caused by heat emission into surroundings. Steel casing is painted by a paint of a good
quality.

5.1 HOW TO CHOOSE THE RIGHT SIZE OF A BOILER

The right size of a boiler, i.e. of heat output, is a very important condition for economic opera-
tion and right work of the boiler. A boiler has to be chosen in order for its nominal output to
respond to losses of a heated object.When you choose a boiler with a too high nominal out-
put, it can cause higher tarring and dew of the boiler
7