9
Technical Features
ENGLISH
P
O
S
ANTIFREEZE FUNCTION
Power supplies
11 - SR
(*)
Status
function
antifreeze
Actions
Electric
Gas
1
ON
ON
< 6 °C
ON
- Burner and Pump ON until T > 14°C
ON
ON
< 2 °C
ON
Only when both the power supplies are ON:
- Burner and Pump OFF until T > 5°C
- When T > 5°C then Burner and Pump
ON until T > 14°C.
2
ON
OFF
< 7 °C
OFF
- Pump ON till T > 10°C
OFF
ON
OFF
- Burner and Pump OFF
OFF
OFF
OFF
- Burner and Pump OFF
(*) Sensor 11 par. 2.2
To activate the antifreeze function only, po-
sition the two knobs as shown in the figure.
The Antifreeze protection is always active.
Even by disabling the heating and domestic hot
water services.
MAX
M
IN
MAX
MIN
1.8 - BOILER ANTIFREEZE
PROTECTION
This protection can intervene only if
the electricity and gas supplies are
connected.
If one of the two is not available and
upon reset
11 (SR)
a temperature of < 2
°C is detected, the appliance will behave
as described in tab.
pos 2.
The heating system can be protected
effectively from frost by using antifreeze
products with inhibitor for heating
systems (specific for multidmetal)
Do not use car engine antifreeze
products as they could damage the
water gaskets.
For outdoor installations, in partially protected places, it is necessary to use the additional
resistance kit (optional) for the anti-freeze protection of the DHW and siphon fittings.
Declared room temperature, with use of the resistance kit = -15 ° C.
