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METAL-FACH Heating Technology
14
Requirements for the boiler room and boiler installation
(User | Installer)
In Poland, boiler houses built for solid fuel should meet the requirements of PN-87 / B-02411 "Solid fuel boiler
houses" and Journal of Laws of 2015.0.1422. They have been divided into two types:
1. For small boiler rooms up to 25 kW of power, the following requirements should be met:

boiler should be placed as centrally as possible in relation to the heated rooms and in a separate room;

the material from which the floor in the boiler room will be made should be non-flammable, in the case
of flammable material, the floor should be covered with a steel sheet with a thickness of 0.7 mm at a
distance of at least 50 cm from the edge of the boiler; the boiler should be placed on a foundation made
of non-flammable materials, protruding 0.05 m above the floor level and with edge steel angles;

in the room, natural lighting is also advisable;

placing the wheel in the room should allow free access to the boiler during cleaning and maintenance;
the distance between the rear of the boiler and the wall should not be less than 70 cm, the distance
between the boiler side and the wall should not be less than 100 cm, and the distance between the front
of the boiler and the opposite wall should not be less than 200 cm;

the height in new buildings should be at least 220 cm, in the case of existing buildings, the height of the
boiler room is at least 190 cm, with proper ventilation ( supply and exhaust) provided;

ventilation should take place through a non-closed opening with a minimum cross-section of 200 cm2
and located up to a maximum of 100 cm above the floor level;

exhaust ventilation should be provided through an exhaust duct made of non-combustible material with
a minimum cross-section of 14 x 14 cm with an inlet opening under the ceiling of the boiler room; the
exhaust air duct should lead above the roof and placed near the chimney; there must be no closing
devices on the exhaust duct;

cross-section should not be less than 20 x 20 cm;

in the floor of the boiler room;

optimal place for fuel storage is a separate room located near the boiler room;

ash and slag should be collected in appropriate containers allowing for daily emptying.
2. Boiler rooms with a thermal power from 25 kW should additionally meet the following requirements:

the distance of the boiler furthest from the chimney, with gravity draft, cannot exceed 50 cm of the
chimney height;

the fuel and slag storage should be located next to the boiler hall at a storage height of up to 220 cm
with a free space above the fuel of at least 50 cm;

facilities and equipment allowing the vertical and horizontal transport of fuel and slag should be
included;

rooms should be ventilated in a natural, unforced manner, allowing one full air change per hour in the
fuel storage and three full air changes in the slag storage;

door to the boiler room should be non-flammable (fire resistance class 0.5), minimum width 80 cm,
opening outwards; they should have a locking system without a handle, enabling them to be opened
outwards under pressure, inwards with the use of a handle;