MA FRICO SIRE ADVANCED FUNCTIONS AC GB 160927

SIRe Advanced Air Curtains
17
37°C 40°C 50°C 54°C
47°C 52°C 57°C 61°C
GB
Unit with electrical heating except
PA2500E
Unit with water heating and PA2500E
Decrease heat Heat off
Start ramp-up
Full speed
Overheat protection - temperature limits
Air curtains
Frost protection function
Unit with water heating
Only applies to units with internal sensor.
The frost protection function is intended to
prevent the water coil from freezing.
When the fan is in operation the valve ac-
tuator opens the valve at an internal tempera-
ture below +15 °C regardless of whether there
is a heating requirement. If the internal unit
temperature continues to drop, e.g. at low
ambient temperatures, insufficient flow line
temperatures, low flow or fault valve function,
the frost protection alarm A3 will be triggered
when the internal unit temperature drops +5
°C. The fan then also stops and when the mix-
ing cabinet is used the dampers is also closed.
With return temp. sensor SIReWTA con-
nected an advanced alarm function occurs.
At return temperatures less than +15 °C the
actuator will open regardless of the heat de-
mand. Alarm is triggered at return tempera-
ture +7 °C and the fan also stops.
When the fan is not running there is a heat
retention function that opens the valve when
the water’s return temperature falls below
+25 °C regardless of heat demand.
Note! In event of repeated alarms, overheating
alarms and frost protection alarms, carry out
a thorough check and if the fault cause cannot
be found contact authorised installer or Frico.
Alarm