„Installation and operation manual for fireplace insert”
KFDECOENG1.1562012
6
damper, as this may cause problems in using the chimney damper or a damage. It is
recommended that fragment of the reducing element placed inside the fireplace insert stub
pipe should have the maximum height of 50 mm. Connection of the reducing element with
the insert and with the connecting pipe must be sealed. The process ends with connection of
the connecting pipe with the chimney. In case of flexible connecting ducts, a transition
element appropriate to dimensions and kind of the chimney must be purchased. Please
remember during connection that the connecting pipe must be mounted on the external side
of the transition element.
Materials which can be used for installation are specified in chapter 4.
After removing all labels from the surface of the glass pane and thorough cleaning of glue
residues, perform test lighting up of the initially connected insert. Fire ought to be increased
gradually to avoid occurrence of excessive internal tensions in the insert body.
During test lighting up of the insert, check tightness of connections with the chimney,
tightness of door gaskets and operation of adjusting elements (combustion rate adjustment
levers). During the first lighting up and annealing of the insert, heat resistant paint covering
the insert surface smells while hardening, which is a normal phenomenon you should not be
concerned with.
Please observer appropriate EN norms and local regulation which concern the chimney.
Figure 4 presents regulatory requirements related to height of the chimney with respect to the
roof ridge.
Basic requirements for chimneys to be used for connection of fireplace inserts stipulate that
the chimney:
-
should have a circular section or another appropriate section as required by applicable
regulations,
-
should be thermally insulated and waterproof, made from materials resistant to very
high temperatures, products of combustion and possible condensate,
-
should not have any narrowings or vertical deflections over 30º,
-
in case of a rectangular section, the maximum proportion of the sides may not exceed
½,
-
minimum chimney height is recommended as 4m measured from the connection of the
connecting pipe to the chimney,
-
must have a cleaning hole for collecting and emptying of combustion process
residues,
-
an excessive section of the chimney may cause problems in using the fireplace; to
avoid that, “cladding” of the chimney may be made throughout its length,
-
an insufficient section of the chimney may cause significant draught reduction and, in
consequence, smoking of the fireplace insert.
Negative pressure in the chimney ought to be 12 Pa (1.2 mm column of water). Negative
pressure measurement ought to be performed during operation of the fireplace (at nominal
combustion rate). If the negative pressure exceeds 17 Pa (1.7 mm column of water), a
draught terminator may need to be installed. Similarly, in case of insufficient negative
pressure, a draught enhancing attachment ought to be fitted.
