Mains Pressure Hot Water
Thermal Store
The principal of operation of an Elson thermal store is that a volume of water is stored at high temperature in a very well insulated, open-vented, copper tank. This tank also incorporates an integral feeder tank and vent pipe. When there is a demand for domestic hot water, cold water direct from the mains is allowed through coils that sit in the upper part of the tank. As the mains cold water passes through the coils, it picks up heat instantaneously from the hot water within the store. When it emerges from the coils, the water, which is at high temperature, is mixed with mains cold water in a thermostatic blending valve that is located on the top of the unit, thus providing temperature-controlled domestic hot water to all outlets.
An open-vented Thermal Store provides all of the benefits of mains-pressure hot water, without any of the problems associated with the installation of an unvented cylinder, e.g. Building Regulations approval, use of Registered Installers and, of course, discharges from safety valves.
The Elson Coral range of thermal stores are available in 3 basic formats:
- Direct electric
- Indirect for use with a boiler
- Indirect for use with a central boiler plant or district heating scheme
Manual Fill Option
All Coral thermal stores can be supplied with a manual fill option. By utilising the manual fill option, there is no requirement to install an overflow pipe. This means that the unit is entirely stand alone and therefore can be easily accommodated centrally within a building without having to provide discharge pipework which terminates outside of the property.
Product range
The Coral E is an electrically heated, floor standing, mains pressure, open vented, thermal store. Available as standard with capacities of 100, 150 and 210 litres, but is also available in other capacities on request.
The Coral Si is a floor standing, mains pressure, open vented, thermal store incorporating an indirect heating coil for use with a gas, oil or other boiler system. Available as standard with capacities of 150 and 210 litres, but is also available in other capacities on request.
Similar to the Coral Si, the Coral CBSi is an indirectly heated Thermal Store for mains pressure hot water, for use with central boiler plant or a district heating system. Available as standard with capacities of 150 and 210 litres, but is also available in other capacities on request.
All the above units provide mains pressure thermostatically controlled domestic hot water to multiple outlets.
High levels of HCFC-free foam insulation, which has a global warming potential of less than 5 and zero ODP, surround the copper tank, which is then finished in an attractive durable white steel outer case.