Vaillant ecoMAX 646 Service Manual download pdf (Page 15)

15

4.3.2 Using the boiler template

(fig. 12)

4.3.2.1 Once a suitable location has

been chosen, fix the paper installation

template on the wall ensuring that the

centerline of the template is vertical

using a spirit level or plumb line.

The template shows the positions of

the fixing holes for the boiler hanging

bracket (2) and the optional

pre-installation connection group (3).

The template also shows the position

of the flue exit hole, for use where the

air flue duct is to be installed directly

to the rear of the boiler, e.g. where

the boiler is installed on an outside

wall and the flue terminates directly

behind.

4.3.2.2 A Pre - installation connection

group (Art. No. 8015) is available as

an optional accessory. It is used to

allow the installation of the central

heating and domestic hot water

pipework without the need to have the

boiler in position. Where an old

existing Vaillant boiler is to be

replaced, the boiler replacement

accessory (Art. No. 300 813) can be

used to allow easy connection on the

new boiler to the existing connecting

group. Refer to the instructions

supplied separately with these

accessories.

4.3.2.3 Mark on the wall the positions

of the hanging bracket fixing holes (2).

Drill two holes Ø10 mm for the

hanging bracket. (Note: Use the

alternative fixing holes where

necessary).

4.3.2.4 Rear exit flue.

Mark the position of the centre of the

flue duct and its circumference, e.g.

by drilling through the template

(1, fig. 12).

4.3.2.5 Other flue options.

Refer to the installation instructions

supplied with the flue accessory for

detailed instructions on other flue

options such as vertical RSF flues, flue

runs to the side of the boiler and the

use of additional flue elbows and

bends etc.

4.3.2.6 Remove the template from the

wall and plug the drilled holes using

the wallplugs supplied.

fig. 12

GW 426/0

4.3.3 Fitting the boiler hanging

bracket.

Secure the hanging bracket to the

wall using the screws supplied. (If the

condition of the wall is poor it may

be necessary to use additional or

alternative fixings to ensure adequate

support).

NOTE: If the boiler is to be fitted in a

timber framed building ensure that the

brackets are secured to a substantial

part of the timber frame capable of

taking the weight of the boiler.

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