5
16
d) Boiler room should be equipped with both natural and artificial light
2
e) Boiler room must be equipped with unclosed supply ventilation 400 cm
2
channel (min. permissible section 300 cm )
f) The exhaust ventilation channel should have 50% surface of the supply
2
ventilation surface (200 m ). The exhaust ventilation and supply ventilation
outlet should be of the same dimensions and be placed close ceiling. Both
ventilation outlets should be performed of non-flammable materials and cannot
be closed
g) Mechanical exhaust ventilation is inadmissible
h) Flue channel should be of 20 x 20 cm section and should be high enough to
assure proper chimney draught. The system should be prepared accordingly
to the environmental protection rules.
I) The boiler room should be large enough to assure the boiler cleaning and
should be minimum 2,2 m high
j) There should be enough space around the boiler surface to get to the boiler
parts :
· 1,5 m from the boiler front
· 0,8 m from the boiler sides
· 1,0 m from the boiler back to be able to easily clean the boiler
k) There shouldn't be any cables or wiring system inside boiler room, not destined
for the boiler operating
l) The central heating system shouldn't be directly connected in any way to the
water supply system
Before combustion duct connection to the main collecting pipe in the living quarters
a special chimney sweep permission is required
Boiler service rules and other important indications concerning central heating
system should be placed in a noticeable place.
In case of exploitation of two boilers or more the following should be concerned:
a) The boiler room should be equipped with a sink and a bib-valve
b) Catch basin should be of one boiler volume
c) Boiler room entry door should be performed of non-flammable material and
shall be opened externally
d) The boiler room ceiling should be performed of gas-tight material with heat
and sound insulation and meet the requirements of the refractoriness rules
e) Boiler room outside thermometer is recommended
(gasification process totally fade). In result a wood tar seats on the boiler walls.
To avoid a/m situation we recommend to install the four-way mixing valve on boiler
outlet. This valve mixes hot water with return water from installation. If hot and return
water jets, flowing through the valve have proper water temperature on boiler return,
then any drastic temperature decrease has no place in gasification chamber and
whole gasification process is on expected level. In spite of it, water temperature
difference 15 - 20ºC does not affect in boiler materials, then boiler exploitation is
longer.
Feeding shortage
Sometimes a power deficiency can take place during boiler exploitation. Then
boiler fuel filling should be stopped. If boiler works - an opened chimney flap is
forbidden. The wood may burn very fast and boiler will get overheated.
In forced (pump) system, in case of power deficiency, fan and circulating pump will
be switched off automatically. Insufficient heat reception from the boiler by radiators
may cause water boiling into the boiler. To avoid this situation, we recommend
connecting an additional heat receiver, for example operational water heater.
Warning! To protect the boiler regulator or other boiler electrical wiring of voltage
excess in network, use some constant-voltage regulator (e.g. computer
strip).
Fan
Fan is very important boiler part. Its blades shall always stay clean. Fan should be
cleaned periodically using of small brush with soft horse hair.
16. BOILER PRESERVATION
Boiler should be exactly preserved for unserviceable season. Boiler inside
chamber, exchanger, and chimney flap should be carefully cleaned. After cleaning,
boiler should stay opened for its better ventilation.