Unical ALKON 100, Installation And Servicing Manual

Page: 44 / 76

8
1.7 - wATER TREATMENT
The treatment of the supply water allows to
prevent inconveniences and maintain the
functionality and efficiency of the generator
over time.
The ideal water pH in heating systems must
be within:
To minimise corrosion, it is crucial to use
a corrosion inhibitor; in order for it to work
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 con-
sumption according to Ministerial Decree
D.M. 174/2004.
ATTENTION!
ANY DAMAGE TO THE BOILER CAUsED BY
THE FORMATION OF FOULING OR BY COR-
ROsIvE wATER wILL NOT BE COvERED BY
THE wARRANTY.
1.8 - BOILER ANTIFREEZE
PROTECTION
Enabled by default
VALUE MIN MAX
PH 6,5 8
Hardness [°fr] 9 15
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
page of the www.unicalag.it website
This protection can intervene only if the
electricity and gas supplies are connected.
If one of the two is not available and upon reset
30 (sMG) a temperature between 2 ÷ 5°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.
P
O
s
ANTIFREEZE FUNCTION
Power supplies
30 - sMG
(*) Status function
antifreeze
Actions
Electric Gas
1 ON ON < 7 °C ON - Burner and Pump ON until T > 15°C
2
ON OFF
< 2 ÷ 5 °C ON
FAULT CODE 16
(see par. 4.6 ERROR CODES).
Ignition disabled.
OFF ON
OFF OFF
(*) Sensor 30 par. 2.2