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
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