Caradon Horizontal Wall Flue Kit 100/150, Boiler Flue Extension, Horizontal Flue Terminal Kit, Commercial Boiler Flue System, Replacement Flue Kit Part Number: 220921

Caradon Horizontal Wall Flue Kit 100/150, Boiler Flue Extension, Horizontal Flue Terminal Kit, Commercial Boiler Flue System, Replacement Flue Kit

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£344.54
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Caradon Horizontal Wall Flue Kit 100/150, Boiler Flue Extension, Horizontal Flue Terminal Kit, Commercial Boiler Flue System, Replacement Flue Kit Part Number: 220921
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Caradon Horizontal Wall Flue Kit 100/150, Boiler Flue Extension, Horizontal Flue Terminal Kit, Commercial Boiler Flue System, Replacement Flue Kit

SKU W-114955
Manufacturer part number
220921
EAN
5022142209214
£344.54
inc VAT£287.12 ex VAT
Lead time: 1-5 working days

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Product: Caradon Horizontal Wall Flue Kit 100/150, Boiler Flue Extension, Horizontal Flue Terminal Kit, Commercial Boiler Flue System, Replacement Flue Kit (Part no. W-114955)

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Description

Short Intro

The Caradon Horizontal Wall Flue Kit 100/150 is a horizontal flue kit designed to route boiler combustion gases safely through an external wall. Ideal for commercial boiler installations and maintenance, it helps create a secure, compliant flue connection with dependable performance. A practical choice when you need a like-for-like replacement or a correct-fit flue solution.

Key Features

  • Horizontal wall flue configuration – enables straightforward routing through an outside wall where a vertical flue route is not practical.
  • 100/150 size format – helps ensure correct fit and airflow performance when matching existing flue system dimensions.
  • Designed for commercial boiler setups – supports reliable operation in plant rooms and larger heating installations.
  • Replacement-ready kit – ideal for servicing, repairs, or upgrades when an existing flue kit is worn, damaged or needs renewing.

Use Case / Application

Suitable for commercial heating environments where a boiler flue needs to exit horizontally through an external wall. Common applications include plant rooms, utility areas, commercial premises, and multi-occupancy buildings where the flue route must be practical and space-efficient. Often specified for replacement during boiler maintenance, refurbishment projects, or when updating flue components to maintain safe operation.

Problem → Solution

Ideal for replacing or installing a horizontal wall flue route where a vertical flue run is difficult, helping you maintain a safe, reliable boiler flue connection.

Product Specifications

• Manufacturer – Caradon
• Manufacturer Part Number (MPN) – 220921
• EAN / Barcode – 5022142209214
• Dimensions / Size – 100/150
• Product Type – Horizontal Wall Flue Kit
• Typical Applications / Use Cases – Commercial boiler flue installations through an external wall; replacement flue kit for servicing and maintenance

Buy from BHL

Caradon is known for dependable heating components designed to support safe, efficient boiler installations. This Horizontal Wall Flue Kit 100/150 (Part Number 220921) is a practical choice for commercial boiler flue routing and like-for-like replacement. Buy online from BHL for competitive pricing, genuine parts where relevant, and free* fast UK delivery. BHL is a specialist online merchant trusted by thousands of satisfied customers online since 1998 with thousands of 5 star reviews. Delivered with care from UK warehouses. *see our terms

Reviews

Buying guide: Commercial Boilers

Commercial boilers heat larger buildings such as offices, schools, shops and blocks of flats. This category covers wall-hung and floor-standing condensing gas boilers from around 30kW to over 400kW, plus cascade frames and headers, plate heat exchanger kits, low loss headers, connection kits, zone controls and casing parts.

Single boilers and cascades

Large heat loads are often met by several boilers working together in a cascade, mounted on a shared frame with common flow and return headers. Sequence control brings boilers on and off as demand changes. In England, Approved Document L Volume 2 expects boiler systems over 100kW to have optimum start and stop control and either high and low firing or multiple boilers with sequence control, and gas boilers over 500kW to have fully modulating burners. Check that the boilers, frame, header and controls are made to work together.

Hydraulic separation

When new condensing boilers are connected to an existing heating system, hydraulic separation is important. A plate heat exchanger keeps the boiler circuit completely separate from the building's pipework and protects the new boilers from dirt carried in older systems. A low loss header is the other common way to separate the boiler and system circuits. Choose kits matched to the boiler model and total output.

Regulations and safety

Work on gas pipework, appliances and their gas parts must only be carried out by a Gas Safe registered engineer. The back of each engineer's ID card lists the categories of work they are qualified for, so check it includes the non-domestic work you need. New and replacement boilers in non-domestic buildings in England should meet the efficiency and controls guidance in Approved Document L Volume 2.

For replacement parts, see boiler spares, or browse circulation pumps.

Shop all Commercial Boilers

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