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 Maintenance Trace Heating?

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 energy consumption is a significant proportion of a building energy usage.

The combination of hot water maintenance trace heating and the correct 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.

ESH Hot Water Heating Tapes

Our hot water temperature maintenance heating tape is 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 again Legionella.

Where applicable the water temperature can be reduced by a thermostatic mixing valve (TMV) to meet the current building regulations.

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.

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