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Installation
86
Extraction of the combustion products
The combustion products may be extracted
by means of hoods connected to a natural
draught chimney whose efficiency is certain
or via forced extraction. An efficient
extraction system requires precision
planning by a specialist qualified in this
area and must comply with the positions
and clearances indicated by the applicable
standards.
When the job is complete, the installer must
issue a certificate of conformity.
1 Extraction using a hood
2 Extraction without a hood
A Single natural draught chimney
B Single chimney with extractor fan
C Directly outdoors with wall- or window-
mounted extractor fan
D Directly outdoors through wall
Air
Combustion products
Extractor fan
5.2 Adaptation to different types of
gas
In case of operation with other types of gas,
the burner nozzles must be changed and
the minimum flame adjusted on the gas
taps.
Replacing nozzles
1. Remove the grids, burner caps and
flame-spreader crowns to access the
burner casings.
2. Replace the nozzles using a 7 mm
spanner according to the gas to be used
(see Burner and nozzle characteristics
tables).
Only for burner UR2:
1. Remove the burner caps and the flame-
spreader crown.
This appliance is not connected to
an exhaust system for combustion
products. It must be installed and
connected in compliance with the
current installation regulations.
Special attention should be paid to
the relevant requirements as for
ventilation.
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