Specialist Flues - Design and Install

Leeds City Council’s internal service provider (ISP) for construction and repair works, Leeds Building Services (LBS) are responsible for installing Specialist Flue Systems in line with Gas Safety Regulations. This will involve the design, supply, installation and commission of bespoke flue systems including pressure testing.

The contractors will be expected to survey, design, supply components, install and commission bespoke chimney/flue systems for combustion appliances (mainly natural gas but may on occasion include heating oil and wood pellet fuelled appliances). Each installation will be unique to the individual site. The overall contract may include some maintenance and repair work to existing flue systems.

A typical installation project will include:

1. Site survey of proposed location with details of proposed appliances.
2. Provide a design compliant with BS EN 13384.
3. Supply and install components.
4. Commission system to BS EN 15287. To include a positive pressure test where the flue is P1 pressure or above. (This will be the case in the majority of projects). Leakage rates to be less than the maximum permissible listed in IGE UP/10. Provide pressure test result certificate.
5. Supply and fit flue notice plate, including the designation of flue as described by BS EN 1443.
6. All design, install and commissioning with due regard to Gas Safe technical bulletin 163.

Expected exclusions. Some services may not be provided by the specialist contractor including:

1. Removal of redundant flues at the site.
2. Installation of condensate drainage pipework.

Leeds City Council are looking to establish a multi-supplier framework (up to three suitably qualified contractors) with mini competition call-off arrangements. The Framework cannot guarantee a minimum volume or value of works and requirements will arise on an ad hoc basis.

The procurement will be conducted as a below threshold tender in line with Leeds City Councils Contract Procedure Rules (CPRs) and the Procurement Act 2023.