Viessmann 60/100 500mm Flue Extension | 7373223

Description

The Viessmann 60/100mm 500mm Flue Extension is a short concentric straight section used to fine-tune the length of a Vitodens flue run where a full 1 metre extension would overshoot the required distance.

Combining 500mm and 1 metre extensions gives installers precise control over final flue length, helping keep the run within the boiler's maximum permitted flue distance while still reaching the intended termination point.

60/100mm

Flue diameter

500mm

Extension length

Straight

Section type

Cuttable

On-site trimming

DVGW-VP 113

System certification

Vitodens

Compatible range

🛈

Please Note: This flue system has been tested and CE-designated as one structural unit with the Vitodens boiler range in accordance with DVGW-VP 113. Only this flue system may be used together with compatible Vitodens boilers.

Precise length adjustment

A 500mm section lets installers fine-tune the total flue run where 1 metre lengths alone would leave the terminal in the wrong position.

60/100mm concentric diameter

Matches the standard Vitodens balanced flue system for seamless integration with bends, terminals and other extensions.

Works on horizontal or vertical runs

Suitable for use in both horizontal wall-terminated and vertical roof-terminated flue configurations.

Simple push-fit jointing

Connects using the same push-fit method as the rest of the Vitodens flue range.

Combines with other extensions

Can be used alongside 1m, 1.95m and 2.95m extensions to build up longer flue runs as required.

Durable, weather-resistant material

Manufactured to the same specification as the wider flue range for long-term reliability.

Specification

Flue Component

Diameter

60/100mm concentric

Length

500mm

Type

Straight extension section

Compatibility

Boiler range

Viessmann Vitodens gas condensing boilers

System certification

CE-designated with Vitodens as one structural unit to DVGW-VP 113

Related accessories

1 metre, 1.95m and 2.95m flue extensions, bends, slide coupling

Can this 500mm extension be cut to a shorter length on site?

The standard 500mm and 1 metre extensions in this range can generally be trimmed to length; the longer 1.95m and 2.95m extensions are supplied as uncuttable fixed lengths. Always confirm cutting suitability against the current installation instructions before trimming.

How many extensions can I use in one flue run?

The maximum number of extensions and bends depends on the total permissible flue length for the specific Vitodens boiler model — refer to the boiler's installation and service instructions for the exact figure.

Can I mix 500mm and 1 metre extensions in the same run?

Yes, 500mm and 1 metre sections are designed to be combined freely to reach the exact flue length required for the installation.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

Calculate

Required Heating

0

Watts

0

BTUs