Concentric Flue Pipe 60/100 L-500 blue for closed-combustion boilers Immergas (PWE)

Concentric Flue Pipe 60/100 L-500 blue for closed-combustion boilers Immergas (PWE) is a coaxial flue liner designed for sealed combustion systems. The pipe combines an inner exhaust channel and an outer air intake channel in one compact assembly with a 60 mm inner diameter and 100 mm outer diameter and a 500 mm length. It is intended for use with closed-combustion wall-hung and floor-standing boilers, providing a controlled path for combustion gases to exit and fresh air to enter the appliance.

Advantages

The concentric design reduces installation footprint by integrating intake and exhaust in a single component, simplifying routing through walls or ducting. Constructed to match sealing and flow requirements of closed-combustion boilers, the pipe ensures separation of exhaust and combustion air streams while maintaining compact dimensions. The blue finish aids visual identification during installation and maintenance.

Suitable for

• Sealed (closed-combustion) wall-hung boilers
• Sealed floor-standing boilers
• Short flue runs through external walls
• Replacement or extension of existing concentric flue systems

Key specifications

• Concentric coaxial construction with combined intake and exhaust channels
• Inner diameter (exhaust): 60 mm
• Outer diameter (air intake): 100 mm
• Length: 500 mm
• Colour/finish: blue
• Designed for sealed/closed-combustion boiler systems

How to use

Install the concentric flue pipe in accordance with the boiler manufacturer’s instructions and local building and safety codes. Align the inner and outer sections correctly with the boiler terminal and the adjoining flue components, ensuring secure mechanical connection and appropriate sealing between joints. Check that the pipe length and routing provide the required clearances and do not obstruct ventilation openings. After installation, perform the required system checks and combustion safety tests to verify correct operation and absence of leaks.

Usage recommendations

Use only with compatible closed-combustion boilers and matching terminal accessories. Confirm dimensions and connection types before purchase and installation. Periodically inspect the assembly for secure joints and signs of wear or corrosion and follow the boiler manufacturer’s maintenance schedule.