Metal-Fach SD DUO BIO Series, Operation And Maintenance Documentation

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16
8. R
(USER/INSTALLER)
In Poland, all the soild fuels boilers should be made in accordance with
PN- 87/B-02411 Norm „Soild fuels boilers”. the have been divided into two
categories.
1) For small boilers under 25 kW, the following requirements should be
met:
• the boiler should be placed in the central position to the heated
rooms and in a seperate room.
• the floor surface should be inflammable. if the floor is flammable,
it should be covered with steel metal sheet of 0,7 mm thickness and
exceed the boiler contour by at least 50 cm. the boiler should be placed on
inflammable base of 0,5 cm above the floor and secured by steel angles.
• the boiler room can be lit naturally as well as artificially.
• the location of the boiler in the room should enable free access to
the boiler during cleaning and maintenance works. The distance between
the back of the boiler and a wall should be at least 70 cm, the side of the
boiler and a wall should be at least 100 cm and the front of the boiler
and a wall opposite should be at least 200 cm;
• the height in a new building should be at least 220 cm. in old
buildings the the boiler room should be at least 190 cm high as long as the
ventilation inside is sufficient (supply- exhaust ventilation)
• supply ventilation should be provided by an open slot of 200 cm2 in
diameter and placed up to 100 cm over the floor surface.
• the exhaust ventilation should be provided by an exhaust duct of
14 x 14 diameter and made from noncombustible material. its outlet
should be installed under the ceiling of the boiler room. the exhaust duct
should lead out over the roof and placed in the close vicinity of the
chimney. no shut down equipment can be installed on the duct.
2) Boiler rooms of heating power greater than 25kW should meet extra
requirements, such as:
• the distance to the far-most chimney, at gravitional draught, cannot
exceed 50 cm of the chimney height.
• the fuel and slag store should be located by the boiler room. T he
storing height up to 220 cm with a 50 cm free space above it.
• the equipment for vertical and horizontal delivery of the fuel
and slag should be considered.
• the fuel store should be equipped with natural ventilation that
allows for full airing once an hour in the fuel store and three airing circles
an hour in the slag store.
• the entrance door to the boiler room should be fire- resistant
(0,5 class of fire resistance), the minimum width 80cm and should open
outside. the door should have a handle- free system when opened from
the inside and have a door handle when coming inside
• the requirements for the ventilation are the same as those for the
boiler rooms of lower power; additionaly, in the boiler rooms of power
greater than 400 kW, the supply exhaust ventilation should be
accompanied by mechanical ventilation that can be periodically activated
when feeding the fuel and removing slag. it must also be able to provide
10 airing circles an hour
• natural lightning which can light the front of the boiler should be
considered in the room. the total surface of the windows should equal at
least 1/15 of the floor surface; half of the windows in the room should
open; the electrical lightining and electrical socket of max. 24 V should
also be located in the room
• inspection chamber that will allow cooling water should be located
in the floor; its capacity should equal the water capacity of the biggest
boiler but not exceed 2m3
• in the boiler room all the heating pipes should be insulated
The placing of the boiler together with the minimum distance
requirements is presented in the boiler room schematics (8.1)
ATTENTION !
The mechanical exhaust ventilation should not be
used in the boiler room
! !
ATTENTION!
Correct fresh air infeed to the boiler room will
ensure efficient fuel burn.
! !
ATTENTION!
Ensure that the carbon dioxide level in the room
is not too high.
! !