VERSION Nr. 2:
Figure: Cooling Pipes, Valves and Fittings Connection Scheme
1) Safety relief valve
2) Res temperature sensor
3) Cooling heat exchanger in the boiler
4) Cooling water output
5) Boiler
6) Cooling water input
A - Cooling water inlet, 2 - 6 bar, temperature of 10-15 °C
B - Drain
CAUTION!
The cooling heat exchanger protecting the system from overheating must not be used for any other purposes except the
protection of the boiler from overheating.
Be sure to complete the installation of both the valve and the temperature sensor before you fill up the boiler with
heating water!!!
The Danfoss BVTS, Honeywell TS 130 or the WATTS STS 20 valve, the sensor of which is located in the lateral part of the
boiler, is intended to protect the boiler from overheating by filling the cooler with cold tap water at any time when the
temperature of the water inside the boiler increases above 95 °C. The cooling water will subsequently be discharged into the
drain. In the event that a reverse flap valve is placed in the cooler’s inlet to prevent possible water backflow under reduced
pressure conditions in water supply pipes, the connection to the cooling heat exchanger must be secured with a 6-10 bar safety
valve or with an expansion vessel of at least 4 liters in volume.
