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In the case of kit installation or maintenance of the Victrix Hybrid, always empty the system and DHW circuits first, in order to
avoid compromising its electrical safety (see Parag. 2.15 and 2.16).
Only for Audax.DK4.
The appliance operates with R32 refrigerant gas.
This gas is ODOURLESS.
Pay the utmost attention
Strictly follow the instruction handbook of the outdoor unit before installation and any type
of operation on the chiller line.
R32 refrigerant gas belongs to the low flammability refrigerant category: class A2L according
to standard ISO 817. It guarantees high performance with low environmental impact. The new
gas reduces the potential environmental impact by one third compared to R410A, having less
effect on global warning (GWP 675).
1.4
ANTIFREEZE PROTECTION
Freezing may damage the system.
Freezing of components must therefore be prevented by performing the following actions:
- The indoor unit is equipped with special antifreeze protection functions, which activate the unit's circulator and burner in the event of
low temperatures. As per standard, these functions protect the indoor unit down to a minimum temperature of -5°C. With the anti-
freeze kit, the protection of the indoor unit is guaranteed down to a minimum temperature of -15°C.
- 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 function' = '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, insulation of the connection pipes, both
DHW and CH, of the condensate drain pipe and the 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 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 instruc-
tions contained in the accessory kit pack).
12
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