Data For Designing The Chimney / Fireplace; Minimum Cross Sections Of Chimney / Combustion Air Duct - Austroflamm 65x Montagehandbuch

FIREPLACE INSERTS / SLIDING DOOR
•
The hypocausts must be designed to ensure heat transport and even heat distribution within the cladding so that no
overheating of the heating chamber occurs at any point.
(If necessary, use the Austroflamm method for calculating hypocausts).
•
The size of the heat-emitting surfaces of the cladding must be matched to the heat generator.
•
The insulation thicknesses specified in Technical Data for protecting the building spaces adjacent to the fireplace
were determined during continuous operation with open air grids and may have to be supplemented by suitable
measures (e.g. rear ventilation).
•
When installing a closed system using Austroflamm fireplace inserts with a sliding door, the temperature resistance
of the rope guide roller is a maximum of 250 °C. Attention must be paid to this maximum permissible ambient tem-
perature! If the hypocaust is constructed according to TR OL specifications, this material temperature should never
be reached. It may be necessary to plan a rear ventilation system for these components.
•
The closed system has to be calculated and executed according to the technical regulations of the furnace and air
heating construction trade.

4. Data for Designing the Chimney / Fireplace

Hinged door and sliding door appliances with self-closing firebox doors.
CAUTION: Operation is only permitted when the firebox is closed.
Designation: Fireplace insert EN 13229 - A1 / A. Values: see section 3. Technical Data.
If the delivery pressure is too high, a delivery pressure limiter must be installed. It is the responsibility of the fire-
place/tiled stove manufacturer to ensure the correct delivery pressure. If the chimney delivery pressure is above 18 Pa,
it is strongly recommended that a throttle valve (available as an accessory) be fitted in the connecting piece!

4.1 Minimum cross sections of chimney / combustion air duct

Appliance
55x55x
65x / 75x
80x64 S/SII / 97x45/74 S / 120x45 S
69x49x57 / 89x49x
63x40x42 S / 63x40x51 S
48x51x51 S3 / 48x72x51 S3
75x35x45 S3
64x33x51 S3
VUUR DRIE 60 / VUUR DRIE 80
The following points must be observed for outside air cross sections:
- Do not create a bend as this reduces the cross section.
- Maintain a constant cross section.
- The free air passage at the air grid must not fall below the actual cross section of the recommended outdoor air
duct.
- Negative pressure (suction) must not occur at the air duct inlet even in unfavourable wind conditions.
14 www.austroflamm.com
Minimum chimney cross
sections
 180 mm
□ 180 / 180 mm
 180 mm
□ 180 / 180 mm
 180 mm
□ 180 / 180 mm
 180 mm
□ 180 / 180 mm
 150 mm
□ 150 / 150 mm
 180 mm
□ 180 / 180 mm
 150 mm
□ 150 / 150 mm
 150 mm
□ 150 / 150 mm
 180 mm
□ 180 / 180 mm
14
Minimum outside air cross
sections
(during closed operation)
Up to 3 m length - Up to 6 m length -
max. 1 elbow max. 2 elbows
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
120 cm² 175 cm²
pipe  125 mm pipe  150 mm
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
120 cm² 175 cm²
pipe  125 mm pipe  150 mm
120 cm² 175 cm²
pipe  125 mm pipe  150 mm
175 cm² 255 cm²
pipe  150 mm pipe  180 mm
EN
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