15
GB
GB
5. INSTALLATION
ATTENTION
Can be observe the regulations in force at the place of installation of the
unit in respect of:
- The design, installation, testing and maintenance of the system (eg. UNI
EN 806 and UNI 9182: 2014),
- The treatment of the water used to feed the plant (eg. UNI 8065: 1989),
- The quality of water intended for human consumption (eg. Legislative
Decree February 2, 2011, n. 31).
Do not use corrosive water, containing deposits, debris chlorine or demi-
neralized water.
To avoid corrosion of the heat exchanger of the heat pump, the water pre-
loading must respect the limits of the table alongside described.
5.6 Water Connections
Example schema for systems with heating system
floor. With cooling fan.
pH
7.5 ÷ 9.0
SO4--
< 70 ppm
HCO3-/SO4--
> 1.0 ppm
total hardness
4.0 ÷ 8.5 dH
CI-
< 50 ppm
PO43-
< 2.0 ppm
NH3
< 0.5 ppm
Fe+++
< 0.2 ppm
Mn++
< 0.05 ppm
CO
2
< 5 ppm
H
2
S
< 50 ppb
Temperaturae
< 65 °C
Oxygen content
< 0.1 ppm
Alkalinity (HCO
3
)
70 ÷ 300 ppm
Electrical conductivity
10 ÷ 500 μS/cm
Nitrato (NO
3
)
< 100 ppm
1
Circulation Pump MIRAI-SMI
2
Fan Coil SILENCE
4
Radiant system
5
Three-way diverter valve Check Valve
6
“Euro” DHW Accumulator
7
Electrothermal head CONTROL T
8
Overpressure valve
9
Air vent valve
System Drainage/Filler Valve
ETW 50 buffer tank
Kit expansion vessel
Filter
Shutoff Valve
Non-return valve
Flexible anti-vibration
Flowmeter system
Do not use the heat pump to treat water used for industrial purposes, water from swimming pools or domestic water.
In all of the above cases use an intermediate inter cooler.
• The minimum water level is 50 litres.
• You must install an adequately sized expansion tank, (the unit is not equipped with one), to ensure a maximum level of pressure, lower than 3 bar in accord-
ance with the maximum temperature in heating mode.
In case you have not reasonably certain water quality within the table at
left or you have doubts about the presence of different materials that could
cause over time a gradual corrosion of the heat exchanger, it is always good
practice to insert an intermediate heat exchanger for inspection and in suita-
ble material to withstand these components.
