Technical data

8.0 Flue Options

Horizontal

Flues

8.1 Horizontal Flue Systems

1. The standard flue is suitable only for horizontal

termination applications.

2. All fittings should be fully engaged. The approximate

engagement is 40 mm. Use the lubrication provided in the

kit to aid assembly.

3. For long flue runs allow 5 mm per metre for expansion.

4. Maximum permissible equivalent flue lengths are:-

Horizontal Concentric (60/100) 5 metres

5. Any additional “in line” bends in the flue system must be

taken into consideration.

Their equivalent lengths are:-

Concentric Pipes:

(60/100) 135° bend 0.5 metres

93° bend 1.0 metres

The elbow supplied with the standard horizontal telescopic

flue kit is not included in any equivalent length calculations

NOTE: Flue length is measured from point X to Y as

shown.

IMPORTANT: All flue systems must be securely

supported at least once every metre. Suitable pipe

supports are available as accessories.

NOTE: Horizontal flue pipes should always be installed with at least 1.5° fall from

the terminal to allow condensate to run back to the boiler.

This bend is equivalent to

1 metre

Total equivalent length =

A+B+C+2x90°Bends

This bend is equivalent to

1 metre