When you choose an Evolution boiler stove it will help heat radiators and water throughout the house, saving money and the environment. This boiler stove can be easily integrated with either the unvented (combi boiler) system or the traditional vented system with water tanks.
Our Safety Cold Water System (SCWS) has been developed to enable select woodburning boiler stoves to be safely connected to a sealed heating system. We have developed a sealed heating system boiler due to the increasing trend in Europe and the UK for sealed heating systems. A sealed heating system boiler facilitates the integration of solid fuel boilers into the house existing heating system without the need for any means of incorporating a vented boiler into an unvented system and the associated pipe work and controls
Traditionally solid fuel burners would be installed onto “open vented” heating systems (this means in the event of overheating, water can overflow into your header tank/feed and expansion tank). With a sealed system you have no open end for the water to overflow so you need an alternative system for coping with overheating. SCWS enabled appliances contain a coil of pipe within the boiler. One end of the coil gets connected to the mains cold feed and the other to a suitable drain. In the event of overheating, mains cold water is allowed to pass through the coil thereby wicking away heat from the boiler and protecting it. The SCWS system requires no electricity and will therefore operate in power cut situations.

The SCWS requires that you have mains cold supply to the property. Properties using water butts or wells are not suitable.

In order for the SCWS product to carry full warranty and support from Broseley Fires, the installation MUST be designed, installed and commissioned by a competent person with one of the following minimum technical competence sets

Set OneInstaller has HETAS Wet H004 and G3 Unvented certificates.
Set TwoInstaller has HETAS Biomass H005 certificate.
Set ThreeInstaller has MCS Biomass certificate.


For installations onto open vented heating systems the G3 certificate is not required. If your installation involves other heat sources (solar, gas, electric and heat pumps) then additional competences will be required.

Roles & Responsibilities

It is the responsibility of the retailer to ensure that prospective customer is made fully aware of the installation requirements as well as the responsibilities mentioned below:

  • It is the responsibility of the end customer to make sure that their chosen installer meets the minimum competence requirements.
  •  It is the installer’s responsibility to ensure that the installation is carried out in accordance with the Broseley Fires installation instructions as well as current building regulations. Installations not complying with Broseley Fires installation instructions will not be supported in any way.


Please note Broseley Fires do not design heating systems, however we do offer guidance in the product installation instructions on the minimum requirements of the system. The installer is responsible for any and all aspects of the installation. A site survey will be necessary to assess the heat requirement of the property and the suitability of the desired appliance for the clients needs. The heating system will need to be designed by the installer and detailed plans produced.

It may be necessary for other tradesman and sub-contractors to become involved in the installation (such as electricians) these individuals should be working to the installers plans and specifications. The installer is ultimately responsible for the final installation (hence they will need to approve all sub-contracted work). Finally the installer MUST provide a commissioning certificate to the client for the final completed installation.

Broseley offer spare parts for the boiler stoves.
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