18
Fig.no.15 Assembly of combustion chamber at VIADRUS
HERCULES ECO boilers
6.5 Filling the heating system with water
Water for boiler and heating system filling must be clear and colourless, with no suspended materials, oil
and aggressive chemicals. Its hardness must correspond to
Č
SN 07 7401 and it is necessary that in case
that the water hardness doesn’t comply water must be treated. Even heating the water with a higher
hardness several times does not prevent the soils from getting precipitated on the boiler drum walls.
Precipitation
of
1 mm calcite reduces at given point the passage of heat from the metal to water by 10%.
The heating systems with an open expansion reservoir allow a direct contact between heating water and
atmosphere. During the heating season the expanding water in the reservoir absorbs the oxygen which
increases the corrosion effect and at same time lot of water gets evaporated. It can only be replenished by
water treated according to
Č
SN 07 7401.
The heating system must be properly rinsed in order to wash out all impurities.
During the heating season the water volume in heating system must be kept constant. When refilling the
heating system it has to be prevented from air intake. Water from boiler and heating system must never be
discharged or taken for usage except for the emergency cases like repairs etc. Water discharge and filling
with new water increases the danger of corrosion and scale development.
In case we have to refill the heating system with water we only do this when the boiler is cold in
order to prevent the cast iron boiler drum from getting damaged.
After the fill-up check all joints at the boiler and heating system for their tightness!
The assembly completion and stoking test accomplishment must be recorded in “Guarantee
certificate”.
7. Commissioning- instructions for contracting service organization
Boilers commissioning can only be done by contracting service organization authorized to do this
activity.
7.1 Verification before commissioning.
Before boilers commissioning there must be checked:
a) Heating system filling with water (thermomanometer check)
b) Heating system tightness
c) Connection to the chimney– must be approved by a chimney firm
d) Connection to the electricity network – must be approved by an authorized firm
Combustion
chamber
Combustion
chamber screw
Fuel reservoir
Fuel reservoir
screw conveyor
Support
Ventilator
Flex hose
Fuel reservoir cover
