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6 Installation
44
Lightning protection
Danger of electric shock
Danger to life due to lightning strike.
The chimney head cover must be integrated in any existing
lightning protection system and house-side potential equalisation.
This work should be carried out by an approved company
specializing in lightning protection and electrical work.
Shaft requirements
Inside buildings, exhaust gas system should be laid in suitable ventilated
shafts. The shafts must be made of non-combustible, dimensionally stable
materials.
Fire resistance duration of the shaft: 90 min.
Fire resistance duration of the shaft in case of buildings of lower building
height: 30 min.
6.5.4
Chimneys already in use
If a chimney used before for oil or solid fuel-fired boilers is used as a duct
for installation of a concentric exhaust gas pipeline, the chimney must be
thoroughly cleaned first by a specialist.
Important
Concentric flue gas routing, also in the duct, also in the shaft, is
absolutely necessary The concentric flue gas pipe must run
straight in the duct.
Multiple usage of air/flue gas chimneys of different
manufacturers
The selected air/flue gas chimney must have approval by the
building supervisory authority DIBt for multiple usage
operation suitability.
Diameter, heights and maximum number of devices can be
taken from the design tables of the approval certificate.
Height above the roof
With regard to the minimum height above the roof, country-
specific regulations regarding chimneys and flue gas systems
are applicable.
6.5.5
Assembly of the flue gas system
Warning
Danger of injury by not wearing working gloves.
Working gloves must be worn during assembly of the flue gas
system.
Mounting with gradient
The flue pipe must be routed at a gradient to the EC five so that the
condensation from the flue pipe can drain from the flue pipe to the central
condensation collector of the EC five.
The min. downward slopes are:
horizontal flue pipe: min. 3° (min. 5.5 cm per metre)
external wall duct: min. 1° (min. 2.0 cm per metre)
Shortening of the pipes
Flue gas pipe may be shortened. After cutting, the ends of the pipes have
to be thoroughly de-burred.
7703301 - 01 - 16072018
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