Important:

FLUE INSTALLATION

For installations with internal and external access For installations with internal access only Important: Before cutting the hole for flues to therear of boiler, always cover fixing jig to make sure it is not damaged. - Use a125 mm diameter core drill. -Use a 105 mm diameter core drill. •Mark correct position of hole from template. Cutting the flue hole All flue cutting lengths must be meas-ured from the terminal end of the flue pipes, diagram 9. The boiler is only suitable for top outlet flue con-nection. A - Flue to rear of boiler Important: •Making allowance for the slope of the flue, cut hole in external wall, preferably using a core drill. Calculation of flue cutting lengths table 1 When cutting the flue hole and whenextending the flue centre line to a side wall, remem- ber that the flue system must have a fall of about 35 mm per metre of flue DOWNWARD AWAY FROM the boiler. There must NEVER be a downward in- cline towards the boiler. for cutting lengths of both innerand outer flue pipes for each of the various flue options available. seediagram 10 a
Diagram 9 (mm). •Refer to B - Flue to side of boiler Under normal circumstances, it will be possible togain access to the outside of the building to fit the flue terminal assembly. Where outside access is not possible e.g. high rise buildings, the flue terminal can be fitted from inside the building only if re- quired. •Measure wall thickness .When the dimension e (mm), see diagram 9. •For side flues, measure distance from inside face of side wall to centre line of flue and subtract 260 mm for right and left hand flue to get dimension •Mark the horizontal centre line for the hole on the rear wall. Extend the horizontal centre line to the side wall and mark the vertical centre line of flue hole as shown in X measured on site is greaterthan that given in table 1, a flue extension kit willbe required, refer to table 2 for details.

∆ L2 ∆ L2 ∆ L1 ∆ L1 aX eea X

Diagram 10 Cutting lengthOuter pipeInner pipe Terminal end Cutting length Ven 089 Table 1 Flue optionCutting length (mm)Comments outer pipeinner pipe Rear fluee + 145e + 228maximum wallthickness "e" without extension 522 mmSide flue lefte + a + 188e + a + 271maximumdistance "X" without extension 739 mmSide flue righte + a + 188e + a + 271maximumdistance "X" without extension 739 mm Table 2 Flue optionDimension "X"N ° of extension kits Side flue522 to 1478 mm1 left or right1479 to 2479 mm2 10