INSTALLATION METHOD 2 ((continued)
It is essential the Rockwool pad be fitted to the rear of the appliance to prevent condensation and to insulate
the appliance firebox from the cold air of the cavity.
Note: NNeither tthe aappliancce nnor tthe RRocckwool iinssulatingg ppad sshould bbridgge tthe ccavity. CConssult yyour lloccal
Buildingg CControl DDepartment ffor aany aadditional cconsstrucction rrequirementss oor ffurther aadvicce.
INSTALLATION METHOD 3
IInnssttaallllaattiioonn iinnttoo ttiimmbbeerr ffrraammeedd ddwweelllliinnggss
Where removal of any part of the inner timber leaf of the wall is involved, the structural integrity of the wall must
be maintained and the advice of your local Building Control Department should be sought. If the property is
under any N.H.B.C. cover, it is advised that their advice on this modification should also be sought.
Either of the two preceding methods of installation may be adapted for use in timber framed buildings, providing
extra care is taken to prevent combustible materials from contact with hot surfaces.
The appliance must be installed in accordance with British Gas documents DM2 and DM3 or the Institute of
Gas Engineers published procedure IGE/UP/7.
Special attention must be paid to the location of the studwork frames of the inner leaf and the appliance
positioned accordingly. Wires and pipes that run within the inner timber leaf must also be located and taken into
account when positioning the appliance.
9
Outer cavity leaf
Inner cavity leaf
Lintel
Superlux board
Fireplace backpanel
B
A
C
D
F
E
A- Opening width: 375mm min. 460mm max.
B- Overall width: 480mm
C- Overall height (exc hearth): 590mm.
D- Opening height: (exc 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 surrounding
floor level or having a 50mm high fixed fender around it’s perimeter.
8.4
8.5
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