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USER MANUAL – Release 1.2 of 01/01/2010
Page 127 of 191
Version: 02/03/2010
47.5 SUPPORT/ANTI-FREEZE/BOILER HEATERS WORKING GRAPHICS
47.6 TEMPERATURE CONTROL OF THE EVAPORATOR ANTI-FREEZE HEATERS
It depends on the configuration of the relay outputs configured as circuit heater and by the choice of the NTC
probe/s prepared for their control.
With the Par. Ar06 select the probe/s where to perform temperature control in cooling mode. With the Par.
Ar07 select the probe/s where to perform temperature control in heating mode. Working is the same for both
parameters. If the value set is
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1 the heaters are ON when one of the probes configured reaches the set
and they deactivate when all of the probes measure a temperature higher than the set + the regulation band.
WORKING OF THE ANTI-FREEZE HEATERS DURING THE DEFROST CYCLE
The parameter Ar05 establishes working of the anti-freeze heaters during the defrost cycle. If the value is 0
during the defrost cycle the heaters are only activated by their temperature control. If the value is 1, the
heaters are always on during the defrost cycle:
they switch on when the reversing valve converts working from heating to cooling and they switch off when
the dripping time has ended and the compressor re-starts.
47.7 TEMPERATURE CONTROL OF THE CONDENSER ANTI-FREEZE HEATERS
It depends on the configuration of the relay outputs configured as circuit heater and by the choice/s of the
NTC probes prepared for their control.
With the Par. Ar08 choose the probe where temperature control of the anti-freeze alarm and the heaters is to
be performed in cooling and heating working mode.
Par.
Ar08 = 0
The temperature control and management of the anti-freeze alarm are disabled.
Par.
Ar08 = 1
The temperature control and management of the anti-freeze alarm and parallel management of the circuit n°
heaters relay outputs is performed via the NTC probe configured as condenser water inlet.
Par.
Ar08 = 2
The temperature control and management of the circuit n° heaters relay outputs can take place via the NTC
probes configured as circuit n° 1 or n° 2 condenser water inlet and common inlet (in this case the
management of the circuit n° heaters relay outputs takes place in parallel).
Par.
Ar08 = 3
The temperature control and management of the circuit n° heaters relay outputs can take place via the NTC
probes configured as circuit n° 3 or n° 4 condenser water inlet or common inlet (in this case the management
of the circuit n° heaters relay outputs takes place in parallel).
Par.
Ar08 = 4
The temperature control and management of the circuit n° heaters relay outputs can be performed via NTC
probes configured as circuit n° 1 or n° 2 condenser water outlet
Par.
Ar08 = 5
The temperature control and management of the circuit n° heaters relay outputs can be performed via NTC
probes configured as circuit n° 3 or n° 4 condenser water outlet
Par.
Ar08 = 6
The temperature control and management of the circuit n° heaters relay outputs can be performed via NTC
probes configured as circuit n° 1 / 2 / 3 / 4 condenser water outlet
Par.
Ar08 = 7
The temperature control and management of the circuit n° heaters relay outputs can take place via the NTC
probes configured as circuit n° 1 / 2 / 3 / 4 condenser water outlet and common inlet (in this case the
management of the circuit n° heaters relay outputs takes place in parallel).
