Immergas VICTRIX HYBRID PLUS Manual page 13

- The outdoor unit is always protected against frost, even with a power failure, only by using an antifreeze liquid. In this case it will be
necessary to disable the antifreeze functions, which are enabled as standard.
In the presence of antifreeze liquid:
- Set the parameter "O.U. antifreeze protect." = "Level 2" (Parag. 3.6);
- The outdoor unit is protected down to a minimum temperature of -25°C with appropriately dosed antifreeze fluid (glycol) (below an
outdoor temperature of -5°C, the installation of the optional outdoor unit condensate anti-freeze resistance kit may be required).
If glycol is present, the antifreeze protection valve supplied as an accessory must not be fitted.
Internal Unit Protection
When installing the appliance in locations where the temperature falls below -5°C, installation of the antifreeze kit is required,
respecting all the conditions listed above.
As per standard, the indoor unit is protected by antifreeze protection functions, which activate the circulator and burner in the
event of low temperatures.
These functions protect the indoor unit down to a minimum temperature of --5°C.
If the indoor unit must be installed in a place where the minimum temperature may drop below -15°C, down to -25°C, follow the in-
structions below to prevent freezing:
- Protect the central heating circuit from freezing by introducing an anti-freeze liquid into this circuit, as indicated in the related para-
graph. This will also protect the outdoor unit and the whole central heating system.
- Protect the domestic hot water circuit (when paired with a storage tank unit), of the indoor unit, against freezing by using an accessory
that is supplied on request (antifreeze kit) comprising an electric resistance, the relevant wiring and a control thermostat (carefully
read and follow the installation instructions contained in the accessory kit pack).
If the outdoor unit is to be installed in a place where the minimum temperature can fall below -15°C (down to -25°C) to avoid the
risk of freezing, an antifreeze liquid must be introduced.
Freeze protection of the outdoor and indoor units by means of the antifreeze function (including -15°C protection of the DHW cir-
cuit with resistance kit) is ensured only if:
- The units and the control panel are correctly connected to the power supply circuit, the gas supply circuit and constantly supplied and
connected to each other;
- The indoor unit is not in "off" mode;
- The indoor and outdoor units are not malfunctioning (Par.2.12);
- The antifreeze unit and/or kit essential components are not faulty.
If the previous conditions are not followed (for example in case of an interruption of the electrical power supply), these anti-
freeze functions are not able to guarantee the protection of the outdoor unit against freezing.
For the effectiveness of the guarantee, damage resulting from the interruption in the electricity supply and failure to comply
with the following paragraph "External Unit Protection" are excluded.
Outdoor Unit Protection.
- Frost protection of the outdoor unit is only guaranteed by using an antifreeze liquid.
If the outdoor unit is installed in an area with temperature <-5°C and high relative humidity for at least three consecutive days,
it is necessary to install the optional outdoor unit condensation antifreeze resistance kit to prevent freezing of the floor with
condensation drainage.
- Protect the central heating circuit from freezing by inserting a good-quality antifreeze liquid into this circuit, which is specially suited
for central heating systems and which is manufacturer guaranteed not to cause damage to the heat exchanger or other components of
the units.
The antifreeze liquid must not be harmful to one's health.
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