Boiler controllers gives weather compensation for three circuits

Published:  18 May, 2009

This stand-alone boiler controller can provide independent weather compensation to three separate heating circuits.

Kanmor’s 374e stand-alone universal heating controller can control two boilers and provide independent weather compensation to three separate circuits. It is available in the UK from Radiant Control.

For example, at an ambient of -3°C it can deliver water to radiators at 75°C, at 60°C for a timber joisted underfloor heating circuit and at 50°C for screeded underfloor heating. At higher outdoor temperatures, the supply temperature to each circuit is reduced in line with its characteristic curve.

Temperature control of such circuits is achieved by modulating two mixing valves with three or four ports, depending on the system design.

If one of two controlled boilers fails to bring the water temperature to target within a preset time, the second boiler is started. Each boiler is automatically rotated, typically every 48 h of burner running time, to extend boiler life and service intervals.

The 374e also controls domestic hot water, which is managed at 80°C.

For more information on this story, click here: May 09, 111

comments powered by Disqus



Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.
February 2018: DIGITAL EDITION


Modern Building services has a group
on Linkedin - join us!


  • Intermediate / Senior Mechanical Engineer

    The Mechanical team undertake the design and specification of a range of Mechanical building services in a lead or supporting role, depending on project complexity and scale. You should demonstrate a flexible approach to design and team working and wil......

  • Senior Urban Designer

     Applicants will be Master’s Degree qualified Architects / Urban Designers, with a strong portfolio of work highlighting a variety of projects at a range of scales and types, with strong focus on regeneration, infrastructure-led projects and major develo......

  • Principal Structural Engineer

    We are currently recruiting on behalf of a global client, with a diverse range of award winning projects to their name. Their experience spans a host of market sectors, including transport, infrastructure, defence, scientific, education, high-tech and ......

more jobs »


"Is the Building Services industry lagging behind in the implementation of BIM?"