Glow-worm hxi and Gas Valve - Manual (Page 20)

20 0020008153-05
(44mm/metre)
Diagram 5.2
12046
WALL
TEMPLATE
EXTENDED SIDE FLUE
Ø 125
90 0
176
Diagram 5.1
9171
SECURING
SCREW (2 OFF)
FRONT CASING
PANEL
RETAINING
LUG
(2 OFF)
5 Installation Preparation
5.1 Appliance Pack
IMPORTANT: With regards to the Health and Safety Manual
Handling requirements, two persons shall be required to lift the
appliance, refer to manual handling on page 5.
NOTE: The fittings pack is located in the base polystyrene
packing under the boiler base.
Remove the polystyrene end packing pieces then carefully lay
the boiler on its back, remove the two front casing panel
securing screws and lift off the panel from two retaining lugs,
see diagram 5.1.
Remove the transit packaging behind the front panel and
discard.
Carefully place front panel and screws to one side.
5.2 Wall Template
Remove the wall template from the documentation pack and
place in the desired position on a flat wall, giving due consideration
to boiler clearances, see Section 2.2, and the flue you are fitting.
5.3 Flue Hole Cutting
The standard horizontal flues are designed with an internal
fall of 44mm/metre towards the boiler for disposal of condensate.
If the standard flue length alone is being used then the flue hole
of diameter 105mm can be cut in the position marked on the wall
template.
For standard side flues the horizontal flue centre line on the
wall template should be extended to the side wall, and the
vertical centre of the flue hole marked at 176mm from the back
wall.
For installations with external access, a 105mm diameter core
drill can be used.
For installations with internal access only a 125mm diameter
core drill should be used.
When using extension pipes with the horizontal rear flue, a core
drill size of 125mm should be used to allow the extension pieces
to slope at 44mm/metre (2.5
0 ) towards the boiler.
For extended side flues the flue hole centre should be
determined by extending the dashed inclined line on the template
to the side wall. This dashed line is drawn at 44mm/metre (2.5
0 )
rise from the boiler. Where this line reaches the side wall, a
horizontal line should be marked. The vertical centre line of the
flue should then be marked at 176mm from the back wall, see
diagram 5.2.
To allow for the flue passing through the wall at this angle a
125mm hole should be drilled irrespective of internal or external
installation.
If necessary remove the wall template whilst drilling the flue
hole.