Installation manual

10
.
N.B.: in systems with zones with different temperatures, the factor available with the low
temperature room thermostat closed goes from 0.5 to 6 but the supply temperature is
limited to 45°C whereas with a high temperature room thermostat request, it goes
from 2.5 to 6 with a maximum temperature of 85°C.
1.3 Signals and diagnostics
The boiler display is a complete system
with simple, intuitive information. An
explanation follows:
Key:
44) Burner start-up
45) Activation of anti-freeze function
46) Activation of service function (for
support service only)
47) Request for intervention/ resetting
48) Sanitary hot water request (if tank
present)
49) Selector switch on “Winter”
50) Heating request
51) Selector on “Summer”
52) “Reset” request
53) Used only for “Service”
54) Temperature reading/Fault code
During normal operating, the digits in 54) indicate the flow temperature value.
During normal operating and in STAND-BY, the flow temperature is also displayed in
large digits. The small digits are used by the installer or the maintenance technician for the
menus.
If there is a fault, the fault code is displayed in flashing mode in large digits with the
spanner symbol.
External temperature
Bolier Temperatur
Fig. 3
Cutting at 45°C at low temperature
Fig.
464544 4847 49 50
51
53
54
52