Sigma IB1100 Benutzerhandbuch

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G8860 _4 Installation Manual NZ 
 
5
C
A
B
 
2.0
 
Creating the Cavity:
 
The dimensioned drawing below shows the size of the opening that must be created to keep 
combustible materials at the required distance from the heater.  
Note: It is not necessary to line the side, top or back of the cavity. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2.1 
Where possible, it is recommended that cavity is made slightly larger than the above 
dimensions to give the installer the maximum amount of space to work in. 
2.2 
The IB1100 and IB850 have their electronics compartment protruding from the left hand side 
of the fire and the resulting offset needs to be taken into account when installing into a tight 
masonry cavity. 
2.3 
If fitting the heater into a non-masonry wall, the first thing installers MUST do after 
unpacking the fire is to bend and re-fix the triangle shaped spacers on each side and rear of 
the heater. The picture below shows how this is done. Note: This is not necessary for 
masonry installation.  
2.4 
If the fire does not fit into the timber cavity that has been created, (after these spacers have 
been put in place), then THE CAVITY MUST BE ENLARGED. 
 
 
 
 
 
 
 
 
 
 
 
 
3.0  
Ventilating the Cavity 
When a cavity is being created for the fire in a timber framed  
wall, ensure that it is not a fully sealed space. Ventilation MUST 
be provided at the base of the cavity and, if possible, leave the 
top of the cavity open into the ceiling space otherwise another 
vent at the top of the cavity will be required.  
NOTE: If an in-ceiling ventilation system is installed (such as 
a DVS or HRV system), particular care must be taken to isolate 
the cavity air space from the ceiling air space. Failure to do so  
will result in the negative air pressure that is created in the ceiling 
space, by the ventilation system, potentially having a detrimental  
Ideal Cavity Dimensions:  
(Timber framed walls) 
 
All dimensions in millimetres
 
 
 
 
A B C  
IB600         700      585     565 
IB850         965      560     565  
IB1100       
1265    560     565 
 
(Masonry Cavity)
 
 
 
 
 
A B C  
IB600         600      570     520 
IB850         950      545     520 
IB1100       1265    565     565
 
(Check offset. Refer 2.2)