Evolution EV AC
18
NOTE:
For mixed underfloor heating circuits, we recommend selecting a maximum flow
temperature of NO HIGHER THAN 45 ºC, in order to protect the underfloor heating
installation from overheating.
10.3
Functioning with a domestic hot water storage heater (Optional)
When the boiler is installed with a connected hot water supply storage heater, the E20 remote
control can be used to select up to 2 hot water temperatures and the hot water times desired. The
E20 remote control will adjust the hot water temperature of the storage heater at each particular
time and switch the hot water on and off in accordance with the times programmed.
The E20 remote control also has an option for activating an anti-legionnaire’s disease bacteria
function (see instructions enclosed with the E20 remote control).
10.4
Telephone relay function
The E20 remote control is designed to be connected to an external telephone relay. If a telephone
relay is connected to it, the heating and hot water can be switched on and off from any location
anywhere in the world, by making a telephone call (see instructions enclosed with the E20 remote
control).
11
SAFETY CUT-OUT SYSTEMS
The boiler electronic control system may activate the boiler safety cut-out system, as shown below.
When any of the cut-outs are activated, the boiler will switch off, an alarm code will flash on the
display and the red alarm warning pilot light will start to flash.
A L A T
If any of the cut-outs below should occur repeatedly, switch off the boiler and call your nearest
official technical assistance service.
11.1
Temperature safety cut-out
When this cut-out occurs, the code
"At"
(temperature alarm) will
begin to flash on the digital display
(13)
and the alarm warning
pilot light will flash on the control panel. The burner will switch
off and stop heating the installation.
This occurs when the boiler exceeds a temperature of 110 ºC. To unblock it, wait until the boiler
drops to below 100 ºC and press the button on the safety thermostat, located inside the boiler on
the underside of the electric box, after first having removed the button cover.
11.2
Burner cut-out
When this cut-out occurs, the code
"AQ"
(burner alarm) will
begin to flash on the digital display
(13)
and the alarm warning
pilot light will flash. The burner will switch off and stop heating
the installation.
This occurs as a result of an anomaly in the burner
(2)
or in the
fuel installation. To unblock it, press the illuminated button that lights up on the burner.
AL AT
bar
ºC
AL AQ
bar
ºC
