Heat Hero Direct Gravity Circuit



Heat Hero Direct is an open vented, gravity solid fuel heating system that has a cooling loop in the event of electrical failure. There is no heat exchanger on the solid fuel boiler so the water from the solid fuel boiler is circulated directly throughout the heating system.

Solid fuel boilers can now be connected to single coil pressure cylinders and have a storage of over 300 litres of domestic hot water. They can also be linked up with solar panels, oil boilers and high pressure gas boilers efficiently and safely.

In the event of power failure, the thermal safety valve opens when the solid fuel boiler over heats above 90 °C. The thermal safety valve is connected to the hot water outlet of the solid fuel boiler. If the response temperature of 99 °C is exceeded, the heat expansion of the silicone oil in the probe system causes a stroke via the bellows which opens the valve to supply cooling water from the mains through a 44Kw heat exchanger. This keeps the maximum permissible temperature in the boiler from being exceeded. If one of the temperature probes fails, the second temperature probe provides redundancy. Correct operation of the thermal safety valve TAS 03 can be verified quickly and easily by simply pressing the valve head. TAS 03 can be mounted horizontally or vertically.