LT4934 (1:01/08)
12
ALL DIMENSIONS IN mm
PRE-CAST FLUE BLOCK
ADDITIONAL DEPTH INCLUDING PLASTER AND FIREPLACE
"A"
"X"
"X" MINIMUM (INCLUDING PLASTER)
"A"
300
320
NONE
SPA
CER
20mm
30mm
30
15
10
0
0
0
340 -440
ALL DIMENSIONS IN mm
"A"
740 Min.
When "A"=150
-
170 OR 140 MIN. IF FLUE HAS NEVER BEEN USED
FOR SOLID FUEL
120 Min.
340Min.-440Max.
64
0 M
in.
550 MIN.- 570 MAX.
OR 500 MIN.-520 MAX.
FOR LOW OPENING
VERSION
300 Min.
50 Min.
ENIGMA II SLIMLINE
Installation Instructions
SECTION EIGHT
Siting the Appliance
Spacers are available in the following sizes 42mm, 30mm and 20mm these may be used to
reduce the minimum depth required.
The fire can be installed in the following flues and locations: -
CLASS ONE
A conventional brick or stone chimney, with
the builder's opening constructed of non-
combustible material as used for a solid fuel
appliance, with a minimum effective cross-
sectional dimension of 225 x 225 mm (9 x 9
ins) or a lined flue (e.g. clay, metal etc.) with a
minimum diameter of 125 mm (5 ins), with a
minimum effective overall height of 3 metres
(10 ft). A builder's opening a minimum of 550
mm high (or 500mm with Low lintel version)
and 350 mm wide with a minimum depth of
170mm (or 140mm if flue has never been
used for solid fuel) to allow sufficient volume
for debris collection.
Any permanent flue restriction or variable dampers shall be removed or locked fully open. The
chimney should be swept prior to installation if not new or previously used with a gas appliance.
IMPORTANT: - The restrictor plate is pre-fitted for installing the appliance into 150mm
(6”) diameter flue or larger. Bend down the restrictor plate if the appliance is installed
into a 125mm (5”) diameter flue or pre-cast flues.
CLASS TWO
Pre-cast
A pre-cast flue correctly constructed conforming to the requirements of BS 1289: 1975, 1986 or
1989 with a minimum effective overall height of 3 metres (10 ft) which is correctly terminated
(see BS 5440). It will normally require an
additional thickness of 25mm in the form of a
fireplace back panel or if it is intended to be
fitted back to the plaster line then a spacer
may be required to meet with the minimum
depth requirement.
IMPORTANT: - Do not fit the restrictor
plate if the appliance is installed into this
type of flue.
Note: An inspection should be made to
ensure that the internal walls of the flue are
clear of mortar fangs. It is recommended that
the plasterwork should not be directly bonded to the surface of the flue blocks, ensuring that
there is a small air gap between the flue blocks and the wall surface. The fire can be installed
with the plasterwork being directly bonded to the flue blocks but there is a risk of surface
cracking occurring to the plaster above the appliance.