Propane Fires - Valor 940 Installer And Owner Manual

175mm diameter flue pipe. See
BS6461 Part 1 for suitable
materials.
Single wall, twin wall or flexible
flue liner with a minimum diameter
of 125mm. The materials to be
used are stainless steel or
aluminium as specified in
BS EN 1856 Part 1. The liner must
be sealed to the surrounding area
above the fireplace opening and to
the top of the chimney. An
approved terminal must be fitted.
A properly constructed precast
concrete or clay flue system
conforming to BS1289 or BS EN
1858. This system is only suitable
if the conditions stated in section
3.10.3 are met.
2. The flue must conform to BS
5440: Part 1 in design and
installation.
The flue, measured from the
bottom of the fireplace opening to
the bottom of the terminal, shall be
not less than 3m in actual vertical
height. When calculated in
accordance with BS 5440: Part 1
Annex A, the minimum equivalent
height of the flue shall be 2.0m of
125mm dia. flue pipe.
3. The flue must not be used for any other appliance or application.
4. Proprietary terminals must comply with BS 715 or BS 1289. Any terminal or
termination must be positioned in accordance with BS 5440 Part 1 to ensure that the
products of combustion can be safely dispersed into the outside atmosphere. Where
the appliance is connected to an unlined brick chimney it is generally unnecessary for
the chimney pot to be replaced or for a terminal to be fitted unless the flue has a
diameter smaller than 170mm.

3.12 Propane fires.

Propane gas appliances must not be installed in a room that is built entirely below
ground level (See BS 5871 Part 2).
©
GDC Group Ltd. 2011
INSTALLER GUIDE
Figure 8. Precast or clay flue block system
Page 17