10 | Connection to ceramic flues
EN
Operating manual Fireplac inserts slied flat + II
56
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.
Characteristics 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]
65x S
7.3 / 7.7 / 6.8
283 / 298 / 317
12
75x S
8.1/7.7
313/300
12
75x39 SII
7.3
286
12
75x51 SII
13.07
252
13
80x64 S
80x64 SII
8.28/8.43
312/291
12
97x S
9.9
274/288
12
120x45 S
14.88
254
13
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]
65x S
4
12
190
75x S
4
12
190
75x39 SII
4
12
190
75x51 SII
4
12
190
80x64 S
80x64 SII
4
12
190
97x S
4
12
190
120x45 S
4
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.