10 | Connection to ceramic flues
EN
Operating manual Folding corner fireplace inserts
42
10
Connection to ceramic flues
The specifications given in advance in respect of mounting instructions and installation regulations re-
main valid (see distances, thermal insulation, exhaust pipe connection).
The appliances are particularly suitable for installation with ceramic flues. However the faultless work-
ing of the heating system is only guaranteed if the following points are observed:
• Calculation of the ceramic flue
• Use of suitable Materials
• Compliance with maximum lengths of flue
• Installation of a direct- or heating flue
• Compliance with the necessary free area of the air grilles
The calculation of the ceramic flue must be made in compliance with the specified maximum flue
lengths nd according to the technical rules of the Stove- and Air Heating Constructors Association and
valid designs.
Key data for calculating the flue dimensions
Appliance type
Exhaust gas mass flow [mg/s] Flue gas temperature at appli-
ance collar [°C]
Req’d Feed pressure at collar
[Pa]
38x38x57 K
5
273
12
55x55x K 3.0
11.5 / 12.1 / 13.7
295 / 298 / 306
12
63x40x42 K
7.65
230
12
Maximum length of chamotte ceramic flues
The flue gas temperatures at the appliance collar are average temperatures over the duration of the
combustion.
Appliance type
Flue length [m]
Feed pressure at collar [Pa]
Flue gas temperature down-
stream of the flues [ºC]
38x38x57
3
12
190
55x55x
4
12
190
63x40x42
3.5
12
190
The flue is constructed of refractory mineral materials. When setting up, attention must be paid to pro-
cessing that is impervious to heating gases. The ceramic flue support must be load-bearing and heat-
resistant. The installation base on which the heat exchanger is to be set up must be heat insulated in
analogy to the manner described in the section on Protection of the set up area.
The flue pipe connection must be connected gas-tight to the ceramic flue by means of plug-in steel
tubes. The connection of the pipes to the ceramic flue is preferably to be made with a premanufac-
tured connection block made of chamotte.
TIP
The steel tube/chamotte transition must be separate (expansion) and tight. The connecting pipes do
not need to be thermally insulated.
TIP
Make the operator of the stove aware that the system with a downstream heat recovery surface must
only be operated with the door closed!
