Immergas MAGIS COMBO PLUS V2 Series - Chimney Sweep Function; Pump Anti-Block Function; Three-Way Anti-Block System; Radiators Antifreeze Function

84
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
M 12
Central heating electrical
resistance
Enables the room central heating integrated
electrical resistance
OFF - ON OFF
M 13 Dehumidier zone 1 Enables the dehumidier in zone 1 OFF - ON OFF
M 14 Dehumidier zone 2 Enables the dehumidier in zone 2 OFF - ON OFF
M 15 Relay 1 Enables relay 1 on the 3-relay board OFF - ON OFF
M 16 Relay 2 Enables relay 2 on the 3-relay board OFF - ON OFF
M 17 Relay 3 Enables relay 3 on the 3-relay board OFF - ON OFF
M 18 Zone 3 outdoor circulator pump Enables the zone 3 outdoor circulator OFF - ON OFF
M 19 Dehumidier zone 3 Enables the dehumidier in zone 3 OFF - ON OFF
M 20 Zone 3 mixing valve Establishes zone 3 mixing valve positioning
OFF - OPEN
-CLOSE
OFF
3.14 "CHIMNEY SWEEP” FUNCTION
I f a c t i v a t e d , t h i s f u n c t i o n m a k e s t h e i n d o o r u n i t w o r k a t a n a d j u s t -
able power. In this state all adjustments are excluded and only the
safety thermostat and the limit thermostat remain active.
is function can only be activated without any requests.
To activate the chimney sweep function, select the “Winter”
mode, in the absence of DHW and central heating requests, and
press the “Reset” button for 8 seconds. Its activation is signalled by
t h e r e l a t i v e s y m b o l (17-1 8  a s h i n g , F i g . 4 8)
Once activated, the chimney sweep function in central heating
mode must be enabled from a zone room thermostat.
For the chimney sweep function in DHW mode, aer activation,
open a tap and draw some domestic water.
During operation it is possible to edit system and DHW setpoints.
is function allows the technician to check the combustion pa-
rameters.
On completion of the checks, deactivate the f unction by pressing
the “Reset” button for 1 second.
3.15 PUMP ANTIBLOCK FUNCTION
e indoor unit has a function that starts the pump at least once
every 24 hours for the duration of 30 seconds in order to reduce the
risk of the pump becoming blocked due to prolonged inactivity.
3.16 THREEWAY ANTIBLOCK SYSTEM
e indoor unit has a function that activates the motorised three-
way unit 24 hours aer the last time it operated by running a com-
plete cycle in order to reduce the risk of the three-way blocking
due to prolonged inactivity.
3.17 RADIATORS ANTIFREEZE FUNCTION
If the system water is close to freezing, the appliance starts up until
it reaches a safety temperature.
3.18 PHOTOVOLTAIC FUNCTION
Should the photovoltaic contact (contact “S 39” Fig. 10) be closed,
Te1 (minimum outdoor temperature) is temporarily set at -15°C
and any accumulated DHW is heated to a temperature of 50 °C via
heat pump operation.
3.19 OUTDOOR UNIT DISABLE FUNCTION
With input active (contact “S 41” Fig. 10) operation of the outdoor
unit is inhibited.
e demands can only be satised by the heat generator.