NBE V10 User Manual - page 6
Boiler Room Design
The boiler room for biomass boilers must be performed in accordance with the Danish Institute of Fire
"Fire Standard No. 32" BTV32. In addition, you must comply with the rules set forth by your local
building codes, environmental authorities, and labor inspectorate. If you are in doubt on how to set up
your boiler room, we recommend that you contact your local chimney sweeper for guidance.
1. Wall and Ceiling
2. Distance to the Wall
3. Floor
4. Area and Lighting
5. Chimney
6. Air
7. Water Faucet
8. Fuel
9. Prohibited Liquids and Materials in Boiler Room.
10. Permit, Notification and Inspection.
1. Wall and Ceiling
Ceiling surfaces must be constructed with at least Class 1 surface material.
If the ceiling surface happens to be the underside of the roof, the material must be made of non-
combustible materials. Wall surfaces must be constructed of at least a Class 2 surface material.
2. Distance to the Wall
Distance from the boiler or flue pipe to any combustible material should be large enough of a distance
to prevent temperatures from reaching an excess of 80 ° C. This requirement applies even if the
combustible material is covered with non-flammable material. If the distance is greater than 500 mm,
the distance requirement is typically satisfied.
3. Floor
Floors should consist of (or be covered with) non-combustible material under and around the boiler of
a distance of at least 300 mm from the boiler sides, and 500 mm from the boiler’s front (i.e. the side
where the ash is removed).
4. Area and Lighting
The boiler room and area around the heating system must be large enough to allow for easy operation,
cleaning, and maintenance of the heating system and boiler room.
There must be adequate lighting so that supervision and maintenance can be performed safely.
5. Chimney
The chimney must be of a design, aperture area, and height that
provides adequate draft conditions and sufficient exiting of flue gasses.
The chimney draft is created by negative pressure resulting from
the buoyancy of the hot smoke rising up through the chimney. If
there is not enough draft in the chimney, the smoke will not properly
rise and will instead seep out through small cracks. This can result
in toxic smoke seeping into the house.