18
R2K 34 RAIN - RAD - ING - Manuale - 1612.1_firm.L181E
1 Pro
tezione antigelo
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fir
m
.L
1
8
1
E
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EN
1. INSTALLATION
INST
ALLER
1.1.12. ANTI-FREEZE PROTECTION
The boiler is protected against freezing thanks to
the electronic board preparation with functions
that start the burner and heat the concerned parts
when their temperature goes below the minimum
pre-set values, protecting the boiler up to an
external temperature of -10 °C.
The device starts when the hot water temperature
goes below 12°C, automatically starting the burner
until the heating flow water temperature reaches
the 30°C and, in presence of a return sensor, until
the heating return water temperature reaches the
20°C.
The system starts even if on the display appears
“OFF”, as long as the boiler is connected to the
power (230 V) and gas supply.
For long periods of standby, please empty the
boiler and the plant.
If the temperature goes below -10° centigrades,
please fill the plant with anti-freeze liquid
(CLEANPASS FLUIDO AG cod. 98716LA) and insert
and electrical resistances kit (cod. 82259LP).
DILUTION PERCENTAGE OF CLEANPASS
FLUIDO AG
ANTIFREEZE -
ETHYLENE GLYCOL
TEMPERATURE
FREEZING POINT
(%) VOLUME
(°C)
20
-7.5
30
-13
35
-18
40
- 22.5
45
-28
50
-33.5
55
-42
60
-50
RECOMMENDED MINIMUM PERCENTAGE OF
GLYCOL : 20 %
