User guide

7
INSTALLATION
6
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 power-operated if
required;
• Connection pipes that can be
used to connect a second
heating circuit;
• Two isolating valves;
• Connectors for the right- or
efthand mounting of the
expansion vessel, the safety
valve with pressure gauge and
the fill valve.
The expansion vessel is not
included.
Typical single-circuit connection
Drain
The drain cock and safety valve must be connected to the building
drain.
fig. 10 : Heating system connection
9
5
6
2
1
3
8
8
4
7
CONNECTING THE HEATING SYSTEM
1. 3-way power-operated mixer valve
2. Safety valve calibrated to 3 bar, with pressure gauge
3. Pump
4. Non-return valve
5. System filling valve
6. Expansion vessel
7. ACV 13.00 controller (see Controller Kit on page 9)
8. Heating system isolating valve
9. Drain cock
fig. 9 : 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 group’s valve discharge 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 N + NHR domestic hot water connection (110 L)
with thermostat valve
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
fig. 11 : Hot water system connection
7
3
10
11
8
4
5
6
9
5
2
1
D A N G E R
HOT
IMPORTANT
As a safety measure, we strongly advise the
installation of a thermostatic mixer to prevent
any risk of burning to persons.