Valor BR622 Installer's Manual page 5

2.2 As supplied the appliance can be installed
in the following situations:-
2.2.1 To a fireplace complete with surround and
hearth as shown in figure 1 and
complying with BS1251 after removal of
the fireback and sufficient material behind
the fireback for a debris catchment space.
The required fireplace, hearth, debris
catchment area and clearance dimensions
are shown in figure 1.
figure 1
Hearth & Fireplace opening
2.2.2 To a fireplace incorporating a metal flue
box complying with the constructional
requirements of the current edition of
BS715. The dimensions of the flue box
must conform to those shown in figure 2.
2.3 With the addition of optional accessory
figure 2
Metal flue box
spacing kit 617K together with a
sufficiently deep surround and hearth, this
appliance can be fitted in the following
situations. Full installation requirements
and instructions are provided with the kit.
INSTALLER GUIDE
2.3.1 To a fireplace that has a precast concrete
Page 5
figure 3
Precast or clay block system
requirements for use with kit 617K
figure 4
Fireplace with fireback to
BS1251. Requirements for
use with kit 617K
or clay flue block system conforming to
BS1289. The appliance is suitable for
installations conforming to older versions
of BS1289 as well as the current edition.
The flue blocks must have a minimum
width not less than 63mm and a cross-
sectional area not less than 13,000mm
Older editions of BS1289 required a
cross-sectional area of 13,000mm
current revision of the standard requires
16,500mm 2 . This appliance is suitable in
both cases.
The distance from the back face of the flue
starter blocks to the extreme front face of
the fireplace including all surfacings must
2 .
2 . The