The Universal Thermal Store is the best choice for many as it takes the worry out of installation. It offers a fully integrated store with all relevant control and safety features. It has three pumps fitted - a boiler pump and a heating pump and a re-circulator for the solid fuel device to aid heat up and stratification.
Use oil, gas or LPG boilers with a solid fuel or biomass appliance to maximise effiencies. A solar coil is fitted in all stores to make them future-proof.
A 3amp supply from a fused spur is recommended, and you will need to wire a programmer/room thermostat to the fitted junction box. In addition a pipe thermostat is supplied loose (but electrically connected) to mount about a metre away from the solid fuel appliance on the flow pipe.
Wiring instructions come with the unit, although all the wiring except above is complete and tested prior to shipping.
Just connect the boiler flow and return, the solid fuel flow and return and the heating flow and return. Pumps are fitted and pre wired. The solid fuel circuit contains an injector tee and re-circulating pump to ensure a minimum return temperature to the solid fuel appliance to prevent condensation and de-stratifying the store. The circuit is pumped to improve efficiency. It can go on the same level as the solid fuel appliance or above it.
The unit meets the requirements of G3, and has three levels of thermal protection.