The Vaillant 1.7m Horizontal Flue Kit is a genuine 60/100mm concentric air/flue duct designed for suitable Vaillant condensing boilers. It provides a practical solution for rear or side wall installations where the boiler flue outlet needs to reach an external wall, while maintaining the required air intake and flue gas discharge arrangement.
Manufactured by Vaillant, this 1.7 metre horizontal wall duct supports a clean, professional installation and is intended for use as part of a correctly specified flue system. It is particularly useful where a standard shorter flue does not provide sufficient reach, helping installers achieve a compliant and tidy boiler installation.
0020219519
Manufacturer MPN
Important: This flue must be installed by a competent person in accordance with the boiler manufacturer’s installation instructions, current Gas Safe requirements and BS 7671 where electrical work is involved. Flue routing, terminal position and maximum permissible flue length must be checked for the specific boiler model before purchase.
Compatibility note: This 1.7m horizontal wall duct is intended for compatible Vaillant boilers using a 60/100mm DN concentric flue system. Always confirm the exact boiler model, flue type and required total flue length before ordering.
Installer tip: Horizontal flue sections should be installed with the correct fall back towards the boiler to allow condensate to drain correctly, as specified in the appliance installation instructions.
Key Features
Genuine Vaillant Component
Designed for use with compatible Vaillant condensing boilers, helping ensure correct fit and system compatibility.
1.7 Metre Reach
The extended
1.7m length is suitable where the boiler position is further from the external wall than a standard shorter flue can accommodate.
60/100mm Concentric Design
The
60/100mm concentric arrangement carries combustion air and flue gases through a single wall penetration.
Horizontal Wall Installation
Intended for
horizontal rear or side wall flue installations where site layout and boiler position allow.
Supports Compliant Installation
When correctly selected and installed, it helps support a compliant flue route in line with the appliance manufacturer’s requirements.
Professional Finish
Provides a neat, purpose-designed flue solution for domestic heating installations.
Technical Specifications
Product Identification
Product
Horizontal flue / horizontal wall duct
Flue Specification
Flue type
Horizontal concentric air/flue duct
Installation orientation
Horizontal, through an external wall
Compatibility & Installation
Compatible systems
Suitable Vaillant boilers using a 60/100mm concentric flue system
Flue classification
C13 horizontal flue application, where permitted by the boiler installation instructions
Installation
Must be installed by a competent installer in accordance with manufacturer instructions and applicable regulations
Frequently Asked Questions
What is the length of this Vaillant horizontal flue?
This is a 1.7 metre horizontal flue kit, providing an extended flue run for suitable installations where a shorter standard flue is not long enough.
Which flue size does it use?
It uses a 60/100mm concentric air/flue duct arrangement, commonly used with compatible Vaillant condensing boilers.
Is this flue suitable for my boiler?
It is intended for compatible Vaillant boilers that use a 60/100mm horizontal concentric flue system. The boiler model, flue route and maximum permitted flue length should always be checked before installation.
Can this flue be cut or extended?
Any cutting, extension or alteration must follow the boiler and flue manufacturer’s installation instructions. The total flue length, bends and terminal position must remain within the limits specified for the appliance.