5 Preparation
5.3 Flue Hole Cutting
Having marked out the flue centre cut a hole for the flue see diagram 5.5 for minimum core drill size for various wall thicknesses.
This will allow for the 35mm per metre (2o) fall towards the boiler.
Note: If required, an optional Wall Liner Kit, part No.900862, is available, complete with fixing instructions.
5.4 Wall Mounting Bracket
Reposition the template, making sure of dimensional alignment with the flue centre lines
Mark the boiler securing screws and mounting plate position, see diagram 5.6.
Drill holes and plug, fit the securing screws allowing sufficient clearance to accept the keyhole fixing brackets and secure the boiler mounting bracket to the wall.
115 Minimum hole | 0248M | |
| ||
125 up to 300mm wall |
| |
135 up to 680mm wall |
| |
| 56.5mm MIN | 124mm |
|
| 'H'= |
|
| 0.035x |
| 2˚ |
|
REAR FLUE | "x" |
|
| SIDE FLUE | |
|
| |
|
| Diagram 5.4 |
|
|
| 0249M | |
| 115 | 125 | 135 | |
2˚ | DIAMETER | DIAMETER | ||
DIAMETER | ||||
| See template for centre line positions |
| ||
75 |
|
|
| |
300 |
|
|
| |
680 |
|
|
| |
WALL THICKNESS |
|
| Diagram 5.5 | |
|
|
| ||
15 | 221834B |
