8
1.8 - BOILER ANTIFREEZE PROTECTION
ANTIFROST PROTECTION
Press ‘‘BLUE’’ button, up to led M OFF.
1.7 - WATER TREATMENT
The treatment of the supply water allows to
prevent inconveniences and maintain the
over time.
The ideal water pH in heating systems must
To minimise corrosion, it is crucial to use
properly, the metal surfaces must be clean.
(see system protection ACCESSORIES sect.
in domestic price list)
ATTENTION (*) see general warnings 1.1
The heating only models are NOT suitable for
the production of water for human consumption according
ATTENTION!
ANY DAMAGE TO THE BOILER CAUSED BY
THE FORMATION OF FOULING OR BY COR-
ROSIVE WATER WILL NOT BE COVERED BY
THE WARRANTY.
VALUE MIN MAX
PH 6,5 8
Hardness [°fr] 9 15
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 between 2 ÷ 5°C is
detected, the appliance will behave as described
in tab. pos 2.
The heating system can be protected eectively
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.
NOTE!
For more information
See Technical Info
from site indicated at pag. 2
Outdoor installations, must be done in partially protected places and must be use additio-
nal heater kit (optional) antifrost for siphon (condensate drain)
Declared ambient temperature, with use of the heater kit = -15 ° C.
P
O
S
ANTIFREEZE FUNCTION
Power supplies 11 - SR (*)
Status
antifreeze function
Actions
Electric Gas
1 ON ON < 7 °C ON - Burner and Pump ON until T > 15°C
2
ON OFF
< 5 ÷ 5 °C ON
FAULT SIGNAL CODE Fr (E16)
(with Electrical power supply ON)
(see par. 4.6 - ERROR CODES).
Ignition inhibited.
OFF ON OFF Ignition inhibited.
OFF OFF OFF Ignition inhibited.
(*) Flow sensor
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