The Chelmer Dual Thermostore has been specially developed for condensing boilers and underfloor heating. The main concept of the Chelmer Dual Thermostore is to ensure that a connected condensing boiler always runs in condensing mode. 

This is achieved by maintaining the lowest return temperatures to the boiler.  Unlike most other Thermostores our cylinder is only kept at 55C at the bottom and 70C at the top.  Direct input from a boiler or ground source heat pump, without a coil, allows the direct transfer of heat in the shortest time.  Additional coils in base can accept input from solar collectors, kitchen ranges or wood burners. There are three sizes of cylinder available: 160, 200 and 280 litres.

	Ensures Condensing boilers always operate in condensing mode
	Integrate Boiler, Solar, Heat Pump, Kitchen Range, Wood Burner inputs
	Lower energy bills. Less boiler cycling and low store temperatures for underfloor heating eliminates mixing valves and provides a buffer for boiler
	Very fast domestic hot water recovery rate
	Elegant, highly insulated design. Can be sited anywhere in your house
	Simple, quick installation. Factory fitted integral energy saving controls, expansion vessels and pipework. Does not require professional installers Energy Saving Design Features Provides a buffer so that low demand from underfloor heating zones will not activate the boiler  Large storage capacity with thermal gradient to the top for continuous domestic hot water Mains pressure for showers without pumps. No stored domestic hot water Sealed system containing boiler and heating circuits. Built-in expansion vessel and statutory safety valves Fail-safe thermostatic blend valve reduces higher temperature store water to a safe and stable temperature for domestic hot water Operation Direct connection without coils allows maximum output from boiler to maintain store temperature. The boiler is only activated by one of two thermostats. The upper one set to 70oC responds to hot water demand. The lower one set between 35-55oC regulates and responds to underfloor heating. Specification Copper cylinder encased in white leatherette finish plastic coated steel. Incorporating patented TristageTM monopath coil heat exchanger with integral expansion control.