Fig. 2-2
16
IN
ST
ALLER
U
SER
MAINTE
NA
NCE TECHN
IC
IAN
Comando remoto remote control not
compatible.
is occurs in the case of an
incompatible connection to a remote control or
if there is a loss of communication between the
boiler and Comando Amico Remoto
V2
(CAR
V2
)
remote control. Try the connection procedure
selector switch (12) to position (
). If
the CAR
V2
is still not detected on re-starting
the boiler will switch to local operating mode,
i.e. using the controls on the boiler itself. If
t
qualified Hunt Heating servcie technician.
his phenomenon occurs frequently, contact a
Signalling and diagnostics - Display of the
Comando Amico Remoto Remote Control
V2
(CAR
V2
) (Optional).
During normal boiler
functioning the Comando Amico Remoto
V2
(CAR
V2
) remote control display shows the room
temperature value; in the case of malfunctioning
or anomaly, the display of the temperature is
replaced by the relative error code present in
the previous table.
Attention:
if the boiler is in stand-by “
”, code
error “CON” will be displayed on the CAR
V2
constantly so as not to loose the memorised
programs.
2.6 BOILER SHUTDOWN.
Disconnect the main selector switch (12) taking
it to position “
” (green indicator 1 o ),
disconnect the omni-polar switch external to the
boiler and close the gas cock upstream from the
appliance. Never leave the boiler switched on if
2.7 RESTORE HEATING SYSTEM
PRESSURE.
Periodically check the system water pressure.
between 1 and 1.2 bar.
If the pressure falls below 1 bar (with cool circuit)
restore normal pressure using the valve provided
by the maintenance technician.
N.B.:
If pressure values reach around 3 bar the safety
valve may be activated.
In this case contact a professional technician
for assistance.
In the event of frequent pressure drops, contact
quali ed sta for assistance to eliminate the
possible system leakage.
2.8 DRAINING THE SYSTEM.
To drain the boiler, use the special draining
valve
(Fig. 2-2)
.
closed.
2.9
has an anti-freeze function that switches the
burner on automatically when the temperature
falls below 4°C (standard protection to minimum
temperature of -5°C). All information relative to
the anti-freeze protection is stated in Par. 1.3. In
order to guarantee the integrity of the appliance
and the domestic hot water heating system in
zones where the temperature falls below zero,
we recommend the central heating system is
protected using anti-freeze liquid. In the case
of prolonged inactivity (second case), we also
recommend that:
- the electric power supply is disconnected;
- the heating circuit and boiler domestic water
circuit must be drained. In systems that are
drained frequently, ling must be carried
out with suitably treated water to eliminate
hardness that can cause lime-scale.
2.10 DECOMMISSIONING.
In the event of permanent shutdown of the boiler,
ensure that the electrical, water and gas supply
Lower view.
Key:
1 - System draining valve
/ EXT
