EN • 21
664Y4200 • F
E
N
FR
R
U
P
L
DE
IT
ES
N
L
7
3
4
5
6
2
1
1
It is compulsory to install a safety thermostat
on the low temperature heating circuit outlet.
InstallatIon
heatIng connectIon:
oVerVIew
1. Isolating valve in the heating circuit
2. Safety valve calibrated to 3 bar, with pressure gauge
3. Non-return valve
4. System filling unit
5. External expansion tank (if necessary)
6. Drain down valve
7. Condensate trap connection
central heatIng connectIons
RECOmmENDATIONS
- The whole central heating system must be thoroughly flushed with clean
water before being connected to the appliance.
- Mount the boiler using the supplied bracket ensuring that it is level or
alternatively use the assembly panel available as an option for the Prestige
Solo model.
- If the boiler is mounted on a wall of lightweight construction it is advisable
to use rubber dampers to reduce the transmission and amplification
of noise.
- The optional mounting plate for the Prestige Solo is equipped with fittings
to provide rapid assembly and connection to the central heating and DHW
systems. If you do not use the assembly panel, the connections can be
carried out using standard straight adaptors.
- The central heating safety valve is integrated and located under the appliance.
It must be connected to the drain with an air gap (allowing an inspection).
- The central heating pump is incorporated into the appliance and, via
the three position switch; its speed can be adapted according to the
system requirements.
- The Prestige Solo is equipped with a 12 litre integrated expansion tank.
Depending on country and associated standards, the Prestige Excellence is
equipped with a 12 litre expansion tank.
This is sufficient for systems containing approximately 120 litres of water for
central heating. For systems of a larger capacity, an adapted expansion tank
can be added to the Prestige Solo and to the Prestige Excellence.
- Fill the system with fresh tap water. Contact your ACV representative
or installer about the use of inhibitors.
- It is possible that the connections are capped due to the presence of
residual water from tests carried out on the appliance. Please ensure
that all the caps are removed before filling the appliance.
- The sluice gate connections for filling and/or draining of the appliance are
found on the bottom.
- Fill the appliance to a minimum pressure of 1.0 Bar.
- Vent the complete system and refill the system to 1.5 Bar.
- The heating circuit must be designed so as to ensure a continuous
flow around the boiler; if this flow can be interrupted when all the
thermostatic valves are closed then a bypass is required to assure
a minimum flow of 200 l/h.
- Ensure that the condensate trap is fitted and connect the hose to the
drain using a connection that can be inspected. If necessary fill the trap
with clean water. Take the necessary precautions to prevent any risk of the
condensate freezing.
gas connectIon
- Our Prestige® boilers are equipped with a Ø 3/4”M connection
to connect a gas isolator.
- The gas connections must comply with all applicable standards
(in Belgium: NBN D51-003).
- If there is a risk of dirt from the gas network, place a gas filter upstream
of the connection.
- Vent the gas pipe and carefully check that there are no leaks on the
boiler’s internal and external pipes.
- Check the system’s gas pressure. Please refer to the technical
data chart.
- Check the gas pressure and consumption when commissioning
the appliance.
