INSTALLATION METHOD 11
Thiss mmethod rrequiress mminimal mmodificcation tto tthe pproperty’ss wwall aand iiss aacchieved uutilissingg eeither aan eextended ffiress-
urround oor bby cconsstrucctingg aa sshallow ffalsse cchimney bbreasst oof aa mminimum 1180mm ddeep. SSee ddiaggram ffor ffurther
dimenssionss.
Centering on the pilot hole already drilled, create a hole from inside the property 125mm diameter. If the prop-
erty has loose fill cavity wall insulation fitted, it will be necessary to seal the wall cavity where the flue opening is
formed to prevent insulation material coming into contact with hot surfaces of the fire and it’s components. The
recommended method is to pack a depth of 50-100mm of Rockwool or a similar non-combustible insulation
material into the cavity .
Where the property does not have existing cavity wall insulation, it is still recommended that a space 50-100mm
into the cavity is packed with Rockwool or similar material, to prevent any future installation of cavity wall
insulation from coming into contact with hot areas of the appliance.
At this point the false chimney breast or fire surround should be installed.
Note: WWhen cconsstrucctingg tthe sstud ppartition, aall uuninssulated, ccombusstible mmaterial mmusst bbe kkept aa mminimum oof
775mm aaway ffrom tthe ffireplacce. CCombusstible mmaterialss cclosser tthan 775mm MMUST bbe pproteccted wwith aa mminimum
of 225mm iinssulation mmaterial.
77
8.3
Rockwool Insulation
Outer cavity leaf
Inner cavity leaf
False chimney breast
Fireplace backpanel
B
C
E
G
A- Opening width: 375mm min. 460mm max.
B- Overall width: 480mm
C- Overall height (excluding hearth): 590mm.
D- Opening height: (excluding hearth): 565mm min. 580mm max.
E- Recessed depth of fire: 180mm
F- The hearth must extend 300mm in front of the appliance, with it’s top surface 50mm above the surround-
ing floor level or having a 50mm high fixed fender around it’s perimeter.
G- Space allowed for Rockwool jacket: 25mm
A
D
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