User manual
1592022700 User manual iCHILL 200CX Rel. 1.0 22/04/2009
32 THERMOREGULATION OF THE ANTI FREEZE, INTEGRATION HEATING OR
BOILER
32.1 THERMOREGULATION OF THE HEATERS IN CHILLER
The Par. Ar06 selects the probe/s control for the anti-freeze relay outputs configured as anti-freeze / support / boiler heaters for the
circuits 1 and 2 in chiller mode.
Par. Ar06 = 0: the function is disabled
Par. Ar06 = 1: the thermoregulation, the relay outputs for heaters circuit 1 and 2 (or both together) is controlled only throughout the NTC
probe configured as evaporator water inlet.
Par. Ar06 = 2: the thermoregulation, the anti-freeze alarm and the relay outputs for heaters circuit 1 is controlled with NTC probe
configured as evaporator probe outlet of the circuit 1.
The thermoregulation, the relay outputs for heaters circuit 2 is controlled with NTC probe configured as evaporator probe outlet of the
circuit #2.
ATTENTION: It is not possible to control the heaters of the crcuit 1 with the probe of the circuit 2 and viceversa.
Par. Ar06 = 3: the thermoregulation, the relay outputs for heaters circuit 1 and 2 (or both together) is controlled throughout the NTC
probe configured as evaporator water outlet circuit 1 or circuit 2 or evaporator water common outlet, or if they are all configured, by the
first probe that goes below the setpoint.
32.2 THERMOREGULATION OF THE HEATERS IN HEAT PUMP
The Par. Ar07 selects the probe/s control for the anti-freeze relay outputs configured as anti-freeze / support / boiler heaters for the
circuits 1 and 2 in heat pump mode.
Par. Ar07 = 0: the function is disabled
Par. Ar07 = 1: the thermoregulation, the relay outputs for heaters circuit 1 and 2 (or both together) is controlled only throughout the
NTC probe configured as evaporator water inlet.
Par. Ar07 = 2: the thermoregulation, the relay outputs for heaters circuit 1 is controlled with NTC probe configured as evaporator probe
outlet of the circuit 1.
The thermoregulation, the relay outputs for heaters circuit 2 is controlled with NTC probe configured as evaporator probe outlet of the
circuit 2.
ATTENTION: It is not possible to control the heaters of the crcuit #1 with the probe of the circuit 2 and viceversa.
Par. Ar07 = 3: the thermoregulation, the relay outputs for heaters circuit 1 and 2 is controlled throughout the NTC probes configured as
evaporator water outlet circuit 1, circuit 2 and evaporator water common outlet , or if they are all configured, by the first probe that goes
below the setpoint.
ATTENTION
The two outputs are controlled in parallel if configured with only by one NTC probe control for common evaporator outlet.
FUNCTIONNING OF THE ANTI-FREEZE, INTEGRATION HEATING, BOILER HEATERS DURING THE DEFROST CYCLE
The Ar05 defines the support heaters:
Par. Ar05 = 0: The heaters are activated only by the thermoregulation algorithm.
Par. Ar05 = 1: The heaters are activated only by the thermoregulation algorithm and are always on during the defrost. They turn on
when the 4-way valve change from heat-pump to chiller and turn off only after the dripping time and the compressors restart.
32.3 THERMOREGULATION OF THE SUPPORT HEATERS FOR AIR/AIR UNIT
The NTC control in chiller mode depends on the Ar06 parameter value while from the Ar07 value in heat pump mode. With one relay
configured as heaters for circuit #1
With one output configured as heater of the circuit #1 the output is enabled both for chiller and heat pump request.
With two outputs configured as heater of the circuit #1 and two the outputs are enabled both for chiller and heat pump request.
FUNCTIONNING OF THE SUPPORT HEATERS DURING THE DEFROST CYCLE
The Ar05 parameter defines the support heaters operating mode during the defrost.
Par. Ar05 = 0: the heaters are controlled only through the thermoregulation algorithm.
Par. Ar05 = 1: heaters are controlled only through the thermoregulation algorithm and are always on during the defrost cycle. They turn
on when the 4-way valve change from heat-pump to chiller and turn off only after the dripping time and the compressors restart
ATTENTION
The support heaters are always off when:
• The supply fan is not configured
• The supply fan is off
• The unit is in stand-by or remote off
• The probe is faulty
32.4 CONDENSER ANTI-FREEZE HEATERS REGULATION
The regulation dependes on the configuration of the heater circuit 1 relay and heater circuit 2 relay and the corresponding NTC probes
used to this control.
The parameter Ar08 is used to select the heaters probe control both for chiller and heat pump.
Par. Ar08 = 0:the heater regulation are disabled.
Par. Ar08 = 1: the regulation of both the heaters together of the circuit 1 and 2 is excecuted only through the condesner water inlet NTC
probe.