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Hot Water Temperature Maintenance
When is hot water temperature maintenance trace heating required?
Hot water temperature maintenance trace heating ensures hot
water at the point of use, whilst reducing power consumption and
water wastage, as well as offering the option to disinfect
periodically against Legionella.
The temperature of hot water cools rapidly when subjected to
lower ambient temperatures and under no-flow conditions. By
installing hot water temperature maintenance trace heating, under
thermal insulation, the hot water in the pipework can be
maintained above its minimum required temperature (usually
+55°C or +65°C) in a predetermined minimum ambient
temperature (usually +18°C).
Why install hot water temperature maintenance trace heating cable?
Today’s market is calling out for more cost
efficient and environmentally friendly solutions.
This has never been more true than in hot
water supply and distribution where this
energy consumption is a significant proportion
of a building energy usage.
The correct combination of hot water trace heating & thermal insulation will…
Reduce the amount of pipework required to supply
the hot water by removing the need for the ‘return’
part of a flow and return system.
Remove the need to ‘heat’ and then ‘re-heat’ the
water as required by a flow and return system.
Reducing the power needed to heat raise the
water.
Reduce the amount of water wasted whilst waiting
for the hot water to reach the outlet.
Allow for periodic purging of the hot water pipework
system to protect against Legionella
What is legionella?
Legionellosis is a collective term for diseases caused by Legionella bacteria including the most serious
Legionnaires disease, as well as the similar but less serious conditions of Pontiac fever and
Lochgoilhead fever.
Legionella bacteria are widespread in natural water
systems, but usually in low numbers. Outbreaks of the
illness occur from exposure to Legionella growing in
purpose built systems where water is maintained at a
temperature high enough to encourage growth (+20°C to
+45°C), such as cooling towers, evaporative condensers,
hot and cold water systems and spa pools used in all sorts
of premises (work and domestic).
If conditions are favourable, the bacteria may grow
increasing the risks of Legionnaires disease and it is
therefore important to control the risks by introducing
appropriate measures.
ESH hot water maintenance cable
Our hot water temperature maintenance heating tapes are a parallel resistance, cut to length on site,
self regulating heating cable designed to compensate for heat losses from hot water distribution
systems, as well as offering the option to disinfect periodically against Legionella.
Where applicable the water temperature can be reduced by thermostatic mixing valve (TMV) to meet
the current building regulations.