Screed Heater Function - Immergas MAGIS PRO 12 V2 Instructions And Recommendations

3.20 SCREED HEATER FUNCTION

The indoor unit is equipped with a function to perform the thermal shock on new radiant panel systems, as required by the applicable
standard.
Contact the manufacturer of the radiant panels for the thermal shock characteristics and its correct execution.
To be able to activate the function there must be no remote control connected, while in case of system divided into zones it must
be properly connected, both hydraulically and electrically.
The active zone pumps are those with ongoing requests, made via the room thermostat input.
The function is activated from indoor unit in stand-by by pressing and holding the buttons "Reset" and "Mode" for more than 5 seconds
(Fig. 39).
The standard function lasts in total 7 days - 3 days at the lowest temperature set and 4 days at the highest temperature set (Fig. 40).
Duration can be changed by changing the value of parameters "T022", "T024".
After activating the function, the lower set (range 20 ÷ 45 °C default = 25 °C) and the higher set (range 25 ÷ 55 °C default = 45 °C) appear in
sequence.
The temperature is selected by means of the buttons "+" and "-" of the system side (
"Mode".
The display now shows the countdown of days alternated with the current flow temperature, as well as the normal operating symbols of
the indoor unit.
In case of failure, the function is suspended and will resume when normal operating conditions are reset from the point where it was in-
terrupted.
In case of power failure, the function is suspended.
When the time expires, the indoor unit automatically goes back to "Stand-by" mode, the function can also be stopped by pressing the
button "Mode".
Key (Fig. 40):
(A) - Top set
(B) - Lower set
(C) - Days
(A)
(B)
39
) and confirmed by pressing the button
(C)
40
77