Specifications

EN • 11
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
HEATING CONNECTIONS
Recommendations
- The central heating system must be completely flushed out
with tap water before connecting the boiler.
- The device must be levelled, using the provided bracket.
- The operating noises can be increased if the appliance
is installed on a wall made of wood or other lightweight
construction. Using rubber absorbers can reduce this
effect.
- The connections to the central heating system are 1"1/4
male.
- The central heating circuit must be equipped with a safety
valve routed to the drain with an open connection (to
allow inspection) and with a pump sized in function of the
pressure drops of both the circuit and the boiler and in
function of the required flow.
- Fill the system with fresh water.
Contact your ACV representative about the use of inhibitors.
- The system must be designed to ensure a continuous flow
in the boiler. If this flow is not guaranteed, for example if
using thermostatic valves, you should install a pressure-
dependent bypass in the system.
- Fit the siphon, fill it with tap water and connect the hose
to the drain using a connection with an inspection section.
Make sure you prevent the freezing of the condensates.
Example of central heating connection
1. By-pass with differential pressure valve
2. Isolating valve, heating system
3. Safety valve calibrated to 3 bar, with pressure gauge
4. System filling valve
5. Expansion vessel
6. Drain cock
7. Heating pump
1
22
4
5
6
3
prestige
7
INSTALLATION
CONNECTION TO THE GAS
- The Prestige is fitted with a 3/4” male fitting connector,
on which you can connect the gas tap.
- The gas connection must comply with the applicable
regulations (e.g. NBN D51-003 in Belgium) in the country
of installation.
- Where there is a risk of dirt stemming from the network,
place a gas filter upstream of the connection.
- Drain the gas pipe and check in minute detail that all the
boiler pipes, both inside and outside, are sealed.
- Check the gas pressure in the system. Consult the technical
characteristics.
- Check the gas pressure and consumption when commissioning
the appliance.