6
1.
Bottom left shaped piece
2.
Bottom right shaped piece
3.
Tertiary air supply nozzle
4.
Middle front shaped piece
5.
Middle rear shaped piece
6.
Upper front shaped piece
7.
Upper rear shaped piece
8.
Inclined grate
9.
Secondary air throttle valve
10. Primary air throttle valve
11. Tertiary air throttle valve
Fig. №. 4
HERCULES E68 boiler assembly
3.3
Excessive heat exhausting device
The final-cooling loop or the DBV 1 - 02 two-way safety valve is designed for the exhaust of excessive heat in the case that water
temperature is exceeded over 95 °C. The final-cooling loop is connected to the boiler flanges according to Fig. No. 5; the two-way
safety valve - according to Fig. No. 7).
In the case of boiler overheating (input water temperature is higher than 95 °C), a thermostatic valve will be initiated, and surplus heat is
exhausted through the final-cooling loop.
Fig. №. 5
Hydraulic scheme of final-cooling loop connection
In case that the system is equipped with the DBV 1 - 02 two-way safety valve and the boiler is overheated (output water temperature is higher
than 95 °C), then the two-way safety valve creates a cool water circuit until the temperature decreases under the limit temperature. In this
moment, there will simultaneously closed the discharge cooling device and the input of cool water which is refilled into the system.
1.
Heating water output into the system 2“
2.
Return water input from the final-
cooling loop 1 1/2 “
3.
Return water input into the boiler from the system 2“
4.
Cooling water output
5.
Thermostatic valve TS 130 (STS 20)
6.
Heating water output from the boiler 2“
7.
Cooling water input
