INSTALLATION, OPERATION AND MAINTENANCE MANUAL
12
fig. 15
fig. 16
1. Boiler
2. Safety Group (automatic air vent, pressure
reducing valve and pressure gauge)
3. DHW Cylinder
4. CH Pump
5. Heating System
6. Four Way Mixing Valve
7. NRV
8. Expansion Vessel
9. Accumulator Tank
10. Three Way Valve
11. Valve