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Exhaust pipe
Exhaust pipe must have the outlet into the flue. If the boiler cannot be attached to the flue
directly, the adapter to the exhaust pipe must be as short as possible and not longer than 1m
without excess heating surface and it must rise upwards to the chimney. Exhaust pipes must be
tight and resistant against flue gas leakage and cleanable from inside. Inside section of the flue
must not narrow to the chimney. Exhaust pipes must not come through dwelling and utility
spaces. Using of bents is not suitable.
Chimney
Attachment of the appliance to the chimney must be always done with approval of authorized
chimney-sweeping company. There must always be sufficient draft in the flue and flue gas must
be draught to the atmosphere in all possible operation conditions. For the right operation of the
boiler the independent flue must be dimensioned in the right way. The draught is influenced by
the section of the flue, height and roughness of the internal wall. The flue must be insulated
sufficiently so as there is no condensate. The temperature 1 meter under the mouth of the flue
must not be lower than 60°C. Into the flue where the boiler is attached, no other appliance can be
attached. The flue diameter must not be smaller than the outlet on the boiler. Flue draught must
have the specified values. But it must not be too high so as not to decrease the efficiency of boiler
or interrupt burning. If the draught is too strong, install a throttle valve between the flue and
boiler.
Informative values of flue section:
20 x 20cm
Ř
20cm
15 x 15cm
Ř
16cm
Exact dimensions of the chimney are specified by the norm. Flue draught is specified in
technical parameters.
The protection of boiler against corrosion:
Suitable solution to this problem is using the appropriate mixing appliance (Regumat Attack-
Oventrop). This solution enables separated boiler and heating circuit, which disable
undercooling of the boiler under 65°C and reduce the possibility of steam condensation and
creation of acids and tar in the boiler exchanger and combustion chamber.
Installation of this appliance is the condition to warranty preservation.
1. Regumat is used to keep the constant temperature
of heating water returning to the boiler over 65°C in
setting the thermostatic head on
return water temperature below 60°C can lead to
creation of condensate and tar and thus to loss of
boiler operation life.
Technical parameters: Inside diameter DN25
5-6 degree.
Max.pressure 10 bar
Max.temperature 20°C
Kvs value 3,9
min.height 7m
min. height 8m
min. height 11m
min. height 12m
The
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