K4
Changes in models reserved.
Dimensions not binding!
Flue Gas Ducting
Version C
3
The ducting is connected to the protection inlet installed vertically. Terminal outlets of these ducts
are either concentric or they are located so close one to the other that they are subject to the same
climatic conditions.
Outlet openings of the terminated separate ducts for fresh air and flue gas exhaust must be located
inside a square with a side of 50 cm and the distance between the planes of two openings must be
lower than 50 cm.
Version C4
The ducting or adapter is connected to the joint shaft. Terminal outlets of these ducts are either
concentric or they are located so close one to the other that they are subject to the same climatic
conditions.
The boiler must be installed with the shortest possible duct length for fresh air and flue gas. The
suction effect used for flue gas ducting boiler must not exceed a negative pressure of 50 Pa. This
connection can be implemented using the systems made by ALMEVA.
Version C5
The wind protection equipment on the ducts must not be placed on the opposite walls of the buil-
ding.
Version C8
A boiler in version C whose ducting or adapter is connected on the air supply side to the protection
inlet and on the flue gas removal side to a separate or joint chimney.
The flue must be equipped with a special lining designed for condensing boilers and a condensate
outlet from the chimney. For the
K4
boiler it is possible to use a plastic lining with temperature
resistance 120 °C made e.g. by ALMEVA.
The boiler must be installed together with wind protective equipment which meets the requirements
of EN 1856-1 (See Annex N).
In case of using of the fuming system consisted of a small vertical chimney going through the cold
roof, it is necessary to buy additionally LIK condensate diverter (60/100 - LPKOK5, code for ordering
27 045 or 80/125 - LPKOK8, code for ordering 27 046), which collects condensed water incurred on
the surface of a small vertical chimney.
The design of both ducts, including their lengths, must be made by the designer in the technical
documentation on the basis of design documentation provided by STREBEL.
Note: The quantity of the components for the individual version types depends on the
placement of the boiler.
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