1592015820 User manual IC260_261L_D DUO FW1.9 rel. 1.0
Pag. 75 of 149
in chiller and heat pump mode when first compressor is swtiched on if FA06>0 and/or FA30>0 the fan runs at
maximum speed for FA06 and/or FA30.
Post-ventilation:
in heat pump mode if FA31>0 and outside temperature > FA32, when last compressor is switched off the
condenser fan (if on at that moment) is forced at FA33 speed for FA31 seconds (outside temperature probe
is required).
37. ANTI FREEZE HEATERS, INTEGRATION HEATING OR BOILER
Regulation 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
: function enabled; the regulation probe is evaporator water inlet.
Par.
Ar06 = 2
: function enabled; the regulation probe are evaporator water outlet circuit 1 and evaporator
water outlet circuit 2.
ATTENTION:
It is not possible to control the heaters of the circuit #1 with the probe of the circuit #2 and
viceversa.
Par.
Ar06 = 3
: function enabled; the regulation probe are evaporator water outlet circuit 1, evaporator water
outlet circuit 2 or evaporator common probe.
Par.
Ar06 = 4
: function enabled; the regulation probe is outside temperature.
Regulation of the heaters in heat pump
The
Par. Ar07
selects the probe/s control for the anti-freeze alarm and the 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:
function enabled; the regulation probe is evaporator water inlet.
Par.
Ar07 = 2
: function enabled; the regulation probe are evaporator water outlet circuit 1 and evaporator
water outlet circuit 2.
ATTENTION:
It is not possible to control the heaters of the circuit #1 with the probe of the circuit #2 and
viceversa.
Par.
Ar07 = 3:
function enabled; the regulation probe are evaporator water outlet circuit 1, evaporator water
outlet circuit 2 or evaporator common probe.
Par.
Ar07 = 4
: function enabled; the regulation probe is outside temperature.
ANTI-FREEZE HEATERS, INTEGRATION HEATING, BOILER HEATERS DURING THE DEFROST
CYCLE
The
Ar05
parameter allows to choose the operation mode of the heaters during the defrost:
Par.
Ar05 = 0:
The heaters are activated according the regulation request.
Par.
Ar05 = 1:
The heaters are activated only by the regulation request and are always on during the defrost.
The heaters are switched on when the 4-way valve change from heat-pump to chiller and switched off only
after the dripping time and the compressors restart.
Condenser Anti-freeze heaters regulation
The parameter Ar08 allows to select the heaters probe control in chiller and heat pump mode.
Par.
Ar08 = 0:
the function is disabled.
Par.
Ar08 = 1:
function enabled; the regulation probe is condenser water inlet.
Par.
Ar08 = 2:
function enabled; the regulation probe are condenser water inlet circuit 1, condenser water
inlet circuit 2 and condenser water common inlet.
ATTENTION:
It is not possible to control the heaters of the circuit #1 with the probe of the circuit #2 and
viceversa.
Par.
Ar08 = 3
: function enabled; the regulation probe are evaporator water outlet circuit 1, evaporator water
outlet circuit 2
Par.
Ar08 = 4
: function enabled; the regulation probe are evaporator water outlet circuit 1, evaporator water
outlet circuit 2 and condenser common outlet.
