INSTALLATION, OPERATION AND MAINTENANCE MANUAL
11
fig. 13
fig. 14
1. Boiler
2. Laddomat 21-60 operated by Flue
Thermostat – 50-300°C
3. NAD or NADO Accumulator Tank
4. Immersion Heater
5. Three Way Mixing Valve
6. Circulating pump
7. Room Thermostat
8. Heating System Outlet
9. Open Expansion Tank
10. DHW Mixing Valve
11. Solar Coil
12. Solar
13. Solar Circulation Pump
Systems for Pressurised Tank
In a pressurized system consideration should be given for an appropriately sized expansion vessel on the central heating circuit
before the return to the boiler and a safety group on the primary flow. It is essential to ensure that the expansion vessel is sized
accordingly to your system. It is recommended to use an expansion vessel that is 15% of the volume of water in your system including
the primary water in the accumulator tank if applicable. An appropriately rated pressure relief valve should also be used in the
safety group. It is also recommended to use a safety heat exchanger with a thermal safety valve that we offer to ensure the boiler
has overheat protection installed.
