Honeywell Control Systems Ltd honeywell controls heating thermostats valve system wireless programmable thermostat news 010206

Subscribe to newsletter

Editor's Note: Honeywell Control Systems Ltd
provide:-

honeywell controls
heating thermostats
valve system
wireless programmable thermostat

Request Information

Home
Include Article
Advertise

Links
Request Information
Terms of use
Contact

Request Facilities / Interiors product information

Request Architectural product information External

Request Architectural product information Internal

Request Mechanical HVAC product information

Request Electrical product information

Youth Centre cuts gas bills by over 80 percent, saving almost £3,000 per year, thanks to heating system upgrade using Honeywell controls

“We have the same under floor pipe system, but now the heat is delivered where and when we need it”, says Centre Development Manager.

Kingsteignton Youth Centre in Devon is saving almost £3,000 per year on gas bills – a reduction of over 80 percent – and has also cut its electric bill, thanks to a heating system upgrade by Cornwall-based bespoke heating specialists, The Stove Shop, using Honeywell controls. The Centre is also much more popular with the local youngsters and organisations who meet there, as previously cold rooms are now warm and comfortable in winter.

“Our gas bill was £875 per quarter, yet people constantly complained that it was too cold – we even had to use additional electric heating,” explained Sarah Diaz, Centre Development Manager. “The quarterly gas bill is now £150 and we also save money by not using electric fires. We have the same under floor pipe system, but now the heat is delivered where and when we need it. For example, we need a much lower temperature in an area where teenagers are playing energetic games than in a room being used by a toddler group.”

The Stove Shop recognises that Honeywell controls are the best on the market and uses them wherever possible, from electronic controls to motorised valves to mechanical mixing valves. It installed seven Honeywell CM67 programmable controllers at Kingsteignton, one for each of seven heating zones. Three CM67s are in the boiler room to serve rooms at that end of the building, the other four within a heating cupboard on the other side.

“It’s very simple to set individual times and temperatures for each zone on the Honeywell controllers,” stressed Sarah. “I program the set temperature in each zone to change automatically at various times during the day, and from day to day, so rooms are heated to the appropriate temperature for the activity. It’s also easy to override a set temperature, if necessary.”

Each CM67 is hard-wired to a temperature sensor in the zone it controls. There is no adjustment in the sensor, to prevent tampering.

The controllers have a built-in energy-saving “optimum start” feature which saves energy by allowing the user to set the time at which the desired temperature is to be reached, rather than the heating “on” time, so reducing fuel consumption on all but the coldest days of the year.

“We introduced several features to make the system highly responsive, efficient and cost-effective to run,” explained electrician Alan Gregory, who designed the system for Stove Shop in conjunction with consultant Arthur Richards of Advanced Hot Water & Heating Design, of Pontypool. “I was fortunate to be working with two excellent plumbers, Matthew Jago of M&V Jago and Stuart Bennett of Stove Shop.

“The most important plumbing improvement was to add a new feed and return from the boiler room to manifolds in the heating cupboard on the other side of the building. All seven Honeywell CM67 controllers can switch the boilers. Naturally, all the motorised valves are Honeywell’s.
“For system efficiency, we replaced a single large boiler with two smaller Quantum 80 ‘Heatsaver’ units, nominally 80,000 Btu each, whose combined output equals the maximum system demand. If the demand is low one boiler runs to meet it and they are automatically rotated to even out run times.”

The under floor heating circuits are supplied via a Honeywell 28mm thermostatic mixing valve. This saves energy by blending hot water from the boilers with warm water from the heating system return manifold to deliver a constant temperature to the heating circuits.

Another detail that enhances efficiency is the automatic bypass circuit. This avoids the boiler cycling on and off, which is inefficient and causes unnecessary wear. Alan Gregory explained, “When the heating circuit temperature is reached, the automatic bypass valve diverts boiler water from the mixing valve into a bypass loop, allowing the boiler to keep going. This provides a large body of water to provide continuous running while avoiding short boiler running periods.

“The Centre’s sports hall is heated by an air handling unit in the roof, but it was on a timer that sent hot water unnecessarily around a big loop, wasting energy, when there was no call for heat. We installed Honeywell valves which interlock with the boiler to switch it off when heat is not needed.”
The greater comfort provided by the new heating controls has made a huge difference to the Centre. Concluded Sarah Diaz, “The Centre has established for itself a vital place at the heart of the local community. We have The Stove Shop and the Honeywell controls to thank for that.”

Honeywell International is a $23 billion diversified technology and manufacturing leader, serving customers worldwide with aerospace products and services; control technologies for buildings, homes and industry; automotive products; turbochargers; specialty chemicals; fibres; and electronic and advanced materials. Based in Morris Township, N.J., Honeywell’s shares are traded on the New York, London, Chicago and Pacific Stock Exchanges. It is one of the 30 stocks that make up the Dow Jones Industrial Average and is also a component of the Standard & Poor’s 500 Index. F. The Home Controls business is part of Honeywell’s Automation and Control Solutions group, a global leader in providing product and service solutions that improve efficiency and profitability, support regulatory compliance, and maintain safe, comfortable environments in homes, buildings and industry.

Email: literature@honeywell.com