Mounting / Installation
Mounting / Installation
4.2.7 General Instructions for Connecting the Gas Flue
Discuss regional guidelines for gas flue lines, cleaning openings and similar
with the appropriate chimney sweep.
4.2.8 Chimney Compatibility
Heavily used and dirty chimneys are unsuitable for conducting combustion air (air
supply through the chimney) and must be cleaned by a chimney sweep before use.
If there are structural damages, such as brittle chimneys, soot build-up or the like, the
chimney should be checked by a chimney sweep foreman to determine its stability. If
cleaning the chimney isn’t possible, the unit can also be run through a concentric
emissions pipe without being dependent upon compartment air. A compartment air-
dependent operating method is a possible alternative.
Hooking up more than one or different types of boilers to one chimney should be ap-
proved by a chimney sweep foreman.
4.2.9 Heating Duct Requirements
Emission lines within buildings must be housed within their own ventilated ducts.
The ducts must be made of non-flammable, form-holding materials. The duct’s fire
resistance duration must be 90 minutes, in lower buildings, 30 minutes.
4.2.10 Maximum Length of Flue Ducts and Number of Directional Changes
Compartment air-dependent /Compartment air-independent
Duct Layout
Central Roof Heating
Maximum length of
Flue Duct
21 m
4 m
Maximum Number of
Directional Changes
2
4
4.2.11 Reducing the Maximum Delivery Height
When lengthening the connection lines by 1 m, the headroom of the emission lines is
lowered by 1.5 m. Since the central roof heating system is limited to a total of 4.0 m,
up to 4 directional changes can be installed. At an angle of 45°, the headroom is
lowered by 0.5 m, at a 90° angle, by 1 m.
4.2.12 Lighting Protection
The chimney head cover must be into an existing lightning protection system and into
a potential equalisation on the house. This should only be done by a licensed profes-
sional.
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Gebr. Bruns GmbH is not responsible for typographical errors or technical inaccuracies and reserves the right to make adjustments.
Gebr. Bruns GmbH
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Hauptstraße 200
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26683 Saterland
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Tel.: + 49 (0) 44 92 / 92 46-0
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Fax: + 49 (0) 44 92 / 71 41
www.bruns-heiztechnik.de
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