Supplied By www.heating spares.co Tel. 0161 620 6677
6
1.6 FIRE PLACE OPENING AND CHIMNEY CATCHMENT SPACE
The front opening of the fireplace must be between 380 and 425 mm wide, and between 550 and
565mm high. If the opening exceeds these dimensions then a surround must be constructed from
suitable non-combustible material to produce a correct size opening. Any surround must be
suitably sealed to the fireplace to prevent leakage. See fig.1
Fig.1
A minimum sized builders opening with a flat rear face and no chair brick fitted must be a minimum
depth of 190mm to accommodate any debris which may fall from the chimney.
See fig. 2 below.
Fig.2
1.7 FITTING TO FIREPLACES WITH EXISTING CHAIRBRICKS AND CONVENTIONAL
BRICKBUILT CHIMNEYS
This appliance is suitable for use in fireplaces fitted with an existing chairbrick without the need for
removal of the chairbrick, providing the minimum depth of the fireplace exceeds 190mm. If the
depth is less than 190mm then the spacer (optional) must be used to give a minimum clearance
from the rear of the fire to the rear of the chairbrick of at least 90mm to allow sufficient space for
the collection of debris which may fall down the chimney. The fireplace must be checked to
ensure that no part of the chairbrick is within 50mm of the flue outlet of the fire when installed.
Builders opening with flat rear face
190mm
(min)
550min
565max
380min
425max
520min
Minimum flat
sealing area
610min
Fire opening
