Vaillant ecoMAX pro SERIES Manuel de service télécharger pdf (Page 18)

Instructions for Use, Installation and Servicing ecoMAX pro18

11 Flue Preparation and installation

11.1 Flue Length

All dimensions are in mm.

To determine flue length, temporarily fit flue elbow to top

of boiler.

For rear or side flue, measure the distance from the

outside wall to the butt joint of the flue elbow fitted on top

of the boiler. A standard flue system will be suitable if the

length measured ‘Y’ is less than 633 mm, see

Figs. 11.1 and 11.2.

If the measurement ‘Y’ exceeds 633 mm then one or

more extension pipes are required.

When cutting, the flue duct should protrude 13 mm from

the end of the air duct.

11.2 Extension pipes

Refer to Figs. 11.3 and 11.4.

Note maximum permitted flue lengths.

When extension pipes are required please note the

length of the extensions, which should be taken into

account when calculating the length that requires cutting.

For example:

Distance from outside wall to butt joint on the flue elbow

‘Y’ = 1500 mm.

Standard flue length = 633 mm.

Extension pipe length = 970 mm.

Length of extension pipe air duct

= 1500 - 633 = 867mm.

In this example the extension pipe would be cut to

867-mm, this would be measured from the end of the air

duct where the flue duct contains the ‘o-ring’ seal.

When cutting, the flue duct should be cut to protrude

13-mm from the end of the air duct at the opposite end to

where the flue duct contains the ‘o-ring’ seal.

The maximum permitted straight flue length is

10 metres. For each 90° elbow or pair of 45° bends

fitted, the maximum length must be reduced by 1 metre.

NOTE:

When using elbows/bends any horizontal

extension pipe should be inclined by 3° ± 1°

fall towards the boiler to facilitate condense

removal.

Fig 11.1

12693

Fig 11.2

12694

Fig 11.3

12695

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 35 36

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Vaillant ecoMAX pro SERIES Manuel de service Page 18

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