7
INSTALLATION
ACV water kit
ACV can supply an optional pre-assembled water kit.
This kit comprises:
• A pump;
• A 3-way manual valve.
This valve can be motorised
if required;
• Connection pipes that can be used
to connect a second heating circuit;
• Two isolating valves;
• Connectors for the right or left hand
mounting of the expansion vessel,
the safety valve with pressure
gauge and the filling valve.
The expansion vessel is not
included.
Typical single circuit configuration
Drain
The drain cock and safety valve must be connected to the building
drain.
Fig. 9: Heating system layout
HEATING CONNECTION
1. Motorised 3-way mixer valve
2. Safety valve calibrated to 3 bar, with pressure gauge
3. Pump
4. Isolating valve with non-return valve
5. System filling valve
6. Expansion vessel
7. Room thermostat
8. Isolating valve, heating system
9. Drain cock
Fig. 8: ACV water kit
HOT WATER CONNECTION
Pressure reducing valve
If the mains water pressure exceeds 6 bar, a pressure reducing
valve calibrated to 4.5 bar must be installed.
Safety group
The safety group of the water tank must be approved by ACV and
calibrated to 7 bar; the discharge from the group's valve must be
connected to the drain.
Hot water expansion vessel
Installing a hot water expansion vessel will prevent any risk of
excess pressure due to water hammer or pressure fluctuations.
Hot water circulation
If the water tank is a long way from the point of use, installing a
closed recirculation circuit can ensure a faster hot water drawoff at
any time.
Typical hot water configuration
Fig. 10: Hot water system layout
7
3
10
11
8
4
5
6
9
5
2
1
IMPORTANT
As a safety measure, we strongly advise the
installation of a thermostatic mixer to prevent
any risk of burning to persons.
Optional accessories
Safety group
Ø 3/4”
Pressure reducing valve
Ø 3/4”
Thermostatic mixer
Ø 3/4”
Expansion vessel
5 litres
1. Safety
group
2. Pressure reducing valve
3. Thermostatic
mixer
4. Hot water pump
5. Non-return
valve
6. Hot water expansion vessel
7. Cold water supply tap
8. Drawoff
tap
9. Drain
cock
10. Air
vent
11. Isolating
valve
1
4
8
3
2
5
6
7
9
