Glow-worm 56/3 Back Boiler - Manual (Page 6)

6 221724B
2 Types of Installation
Diagram 2.1
Diagram 2.3
5423
6838
PREPARED
BOILER
BASE
HEARTH
'Z' mm
'Y' mm
'X' mm MIN
FIRE FIXING
WALL FACE
165mm
MAX
PREPARED BASE
TOPS OF HEARTH
MUST NOT BE
ABOVE PREPARED
BASE
13mm MIN
NON-COMBUSTIBLE
MATERIAL
50mm
MIN
350mm MIN
FIRE FIXING
WALL FACE
*NOTE
This dimension can
be increased up to
190mm if builder’s
opening depth is at
least 375mm deep
*165mm
MAX
FLUE
PIPE
350mm
MIN
Diagram 2.2
COMBUSTIBLE HEARTH / WALL
MOUNTED INSTALLATIONS
1590
350mm
MIN.
FIRE FIXING
WALL FACE
N.B. *Minimum dimension.
This dimension refers to
minimum clearance after
carpet or any floor
covering has been fitted.
PREPARED BASE
TOP OF CARPET,
FLOOR COVERING
OR
COMBUSTIBLE
HEARTH
*75mm
2.1 With Non-combustible Hearth
The back boiler must be installed level with the hearth or
above it, see diagram 2.1.
For minimum dimensions of a hearth see diagram 2.1.
2.2 Combustible Hearth
If the hearth is existing and made of a combustible material
the back boiler must be installed to the dimensions in
diagram 2.2.
2.3 With Surround
The combined thickness of the surround and lintel must be
checked, to make sure that the back boiler can be positioned
within the opening to allow easy connection of the flue into
the back boiler flue socket, see diagram 2.3.
The surround requires a minimum opening for access as
shown in diagram 1.2.
2.4 Wall Mounted - that is - Without Surround
or Hearth
If there is to be any combustible material beneath the fire
front, for example, carpet then the base of the builder’s
opening must not be less than 75mm above the floor
covering as shown in diagram 2.2.
The builder’s opening, with lintel must have minimum
dimensions as shown in diagram 1.2 and 2.3.
Dimensions X, Y, and Z refer to
Fire Installation Instructions