Anti-Legionella Function (If Paired With A Storage Tank Unit); Automatic Venting Function; Preheating Function - Immergas MAGIS PRO 12 V2 Instructions And Recommendations

3.17 ANTI-LEGIONELLA FUNCTION (IF PAIRED WITH A STORAGE TANK UNIT)

The indoor unit is equipped with a function to perform a thermal shock on the storage tank.
This function brings the generator temperature to the maximum allowed with DHW integrative resistance enabled.
The function is enabled with parameter "P 15".
The function activates at the time set on parameter P 16, on the weekday set on Parameter "P 17"; the function can be activated every day
by setting "P 17"="ALL".
The maximum allowed duration of the function is "P 13" hours; if the function is not completed within the maximum allowed time, an
alarm will be triggered.
The function can only be activated in presence of integrative DHW resistance and eventually a thermostatic valve must be in-
stalled at the DHW outlet to prevent burns.

3.18 AUTOMATIC VENTING FUNCTION

In the case of new central heating systems and in particular mode for floor systems, it is very important that deaeration is performed cor-
rectly.
The function consists of the cyclic activation of the pump and the 3-way valve.
The function is activated in two different ways:
- Each time the heat generator is re-powered;
- Using parameter "U 50".
In the first case, the function has a duration of 8 minutes and it can be interrupted by pressing the "Reset" button (3). In the second case, it
has a duration of 18 hours and it can be interrupted simply by switching the heat generator on.
Activation of the function is signalled by the countdown shown on the indicator (14).

3.19 PREHEATING FUNCTION

In case of DHW (Domestic hot water) or central heating request, if the water temperature is lower than the value set on parameters I15,
the operation of the heat generator is forced until +5°C are reached with respect to the value set on parameter I15.
The function remains active for a maximum of 2 hours.
If needed, the function can be bypassed by disabling the system's electric resistance.
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