Flues - Valor Inspire 1000FS Installer And Owner Manual

5.10.3. Gather hood installation in Stud work Chimney
The Inspire gas fire products are intended to be used only in a fireplace of non-
combustible material.However if a stud work chimney breast is used the builder/installer
MUST ensure to leave a minimum 75mm clear to the sides of the appliance and a
minimum of 100mm clear to the rear of the gather hood connector.
Directly above the appliance the area should be left clear to prevent a build-up of heat.
If the fireplace wall ends at ceiling height two air vents of at least 50cm 2 should be
installed one at the bottom and one at the top of the wall to reduce heat build-up.
Note: There are three suitable Convectional Flue Options;
1. Rear exit - Builders opening Unlined 178mm (7") minimum.
2. Top Exit - Builders opening Lined 127mm (5")
3. Stud work is Top Exit only - Twin Wall Rigid 127mm (5")

5.11 Flues.

1. Suitable flues and minimum flue sizes are as follows: -
It should be noted that, as with many appliances, sharp bends or horizontal runs in
metal flues at the top of the system can be a cause of problems in these types of
installation.
225mm x 225mm conventional brick flue.
-
125mm and 175mm diameter lined brick or stone flue.
-
200mm diameter factory made insulated flue manufactured to BS4543 Part 2.
-
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.
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.
©
GDC Group Ltd. NOV 2017
INSTALLER GUIDE
Page 17