Wall Mounting Template & Flue Opening - Worcester 41-311-67 Installation, Commissioning And Servicing Instructions

4.2 WALL MOUNTING TEMPLATE & FLUE OPENING
WARNING: BEFORE DRILLING:
ENSURE THAT THERE ARE NO PIPES,
ELECTRICAL CABLES, DAMP PROOF
COURSES OR OTHER HAZARDS .
SAFETY:
All relevant safety precautions must be undertaken.
Protective clothing, footwear, gloves and safety goggles
must be worn as appropriate.
FIXING THE WALL MOUNTING FRAME:
B The boiler template shows the relative positions of
the flue and the top and bottom fixing of the mounting
frame.
1. Fix the template to the wall in the desired position.
2. Drill 4 holes for the wall mounting frame through the
template.
The wall mounting template has been sized
to allow for minimum clearances of 5mm
sides, 200mm base and 30mm above a
100mm diameter flue elbow.
REAR FLUE OUTLET
B The drawing opposite shows the boiler template with
the flue centre lines of both the 100 mm and 125 mm
flue systems.
3. Mark centre line of flue to be used (3); the external
diameter of the hole can also be marked if required.
B If a 100 mm diameter flue is to be used, a 125 mm
diameter hole is required. However, if using the
weather sealing collar by pushing it through from
inside the property, then a 150 mm diameter hole is
required to accommodate this.
B The flue turret of the 100 mm flue has an in-built 3°
angle.
B If extensions are to be added then the complete flue
must rise at an angle of 3°.
B The 125 mm diameter flue system will require the flue
to rise at an angle of 3°.
B Drill hole using a core drill or similar.
SIDE OUTLET:
4. Mark from the centre line of the wall template to the
wall which the flue will pass through (4).
B Allow for a rise of 52mm per metre length of flue, to
give a 3° angle.
B Clear any debris from the site.
6 720 644 743a (2010/10)
4.
Fig. 25 Marking the flue position
INSTALLATION
3.
1.
2.
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