Description
The ISPESL circular dated 18/09/2016 referred to thermical system with two heating generators (one with solid fuel and and the other one with a different kind of fuel), states that: “In case the primary thermal fluid of two generators goes directly into the thermal tank, the sum of powers has to be considered; hence in case power is above 35 kW, the plant must be included in the M.D. 1/12/1975 and following norm updates. If instead there is a heat exchanger between the two generators, it can be considered as an hydraulic interruption between the two thermal fluids and therefore there is no need to sum the powers”.
The hydraulic separation unit NOVABOX mod. 520, through the hydraulic layout, covers both the heating circuit management and the instantaneous production of sanitary water and is confirmed to the above mentioned ISPESL norm with high performances. The GRUNDFOS UPM3 Hybrid pumps are the top of this range. They give the possibility have up to 7 meter head pumps and the curves can be set with:
- Proportional pressure (default)
- Constant pressure
- Constant curves
A simple and complete installation is enabled thanks to hydraulic accessories which are supplied as standard:
- Valves
- Check valves
- Air vents
- Safety valves
- Temperature sensor
The hydraulic units can be supplied in metal boxes, to be wall-hung or to be built-in, painted The heat exchanger SWEP gives the possibility to produce instantaneously up to 20 l/min of hot sanitary water.
