Class 1, Fig. 9, Fig. 10 – Royal Cozyfires Slimline Standard MK2 - LPG User Manual
Page 9: Class 2, Fig. 11, Pre-cast
MM79 010710
2.4.1
INSTALLING
THE
APPLIANCE
(Flue)
Any permanent flue restriction must be removed and any variable dampers locked fully open or removed. If the flue has been used
previously for solid fuel, it must be swept PRIOR to installation. This appliance is suitable for installation into CLASS 1, Class 2 and
PRE-CAST flues.
Page 8
505mm
410/460mm
555/590mm
Hatched area must be non-combustible and
flat to ensure a seal around the appliance.
Class 1
A conventional brick or stone chimney with a minimum effective cross
sectional dimension of 225mm x 225mm.
A lined flue with a minimum diameter of 175mm having a chair brick and
throat lintel conforming to the current issue of BS 1251 (Fig. 9).
If a chair brick is fitted, the minimum distance from the knee to the front face
of the surround is 150mm.
If no chair brick is fitted, the minimum distance required between the rear of
the opening and the front face of the surround is 210mm
NOTE: A restrictor plate is supplied with the IFU kit. This restrictor plate
MUST ONLY BE USED ON THIS FLUE TYPE!
Fig. 9
600mm
600mm
500mm
410mm
555mm
Hatched area must be non-
combustible and flat to ensure a
seal around the appliance.
Fig. 10
The area beneath the metal flue box
must be a non-combustible material
25mm thick.
Class 2
A twin walled metal flue box manufactured to the current
issue of BS 715 with a twin walled 125mm diameter flue
and a minimum effective height of 3 metres (Fig 10).
NOTE: The restrictor plate supplied in the IFU kit MUST
NOT BE USED ON THIS FLUE TYPE!
500mm
410mm
555/590
mm
Hatched area must be non-combustible
and flat to ensure a seal around the
appliance.
Fig. 11
600mm
Pre-Cast
A pre-cast flue conforming to the current issue of BS
1289 and BS 1289 Part 1 including properly constructed
pre-cast flues with a cross sectional area of 13000mm
2
(Fig. 11).
NOTE: The restrictor plate supplied in the IFU kit MUST
NOT BE USED ON THIS FLUE TYPE!
Surround thickness
when flue outlet
depth is maintained
Care must be taken to
ensure that the flue
spigot from the
appliance does not
impede the flue outlet
from the metal box
Care must be
taken to ensure
that the flue
spigot from the
appliance does
not impede the
flue outlet from
the metal box