1592015820 User manual IC260_261L_D DUO FW1.9 rel. 1.0
Pag. 99 of 149
With the recovery function enabled, the unit running in chiller and with the temperature/pressure proper
condition, the unit can start the recovery of the first circuit if the corresponding digital input is active. When
the digital input is active the relay of the valve for the recovery of the first circuit is activated.
CIRCUIT # 2
With the recovery function enabled, the unit running in chiller and with the temperature/pressure proper
condition, the unit can start the recovery of the second circuit if the corresponding digital input is active.
When the digital input is active the relay of the valve for the recovery of the second circuit is activated.
After starting the function, if the digital input becomes not active the recovery function runs for the time set in
rC04 before stopping.
Between the end and the next recovery function the instrument waits the time set in the parameter rC05
even if the digital input is activated again.
RECOVERY START AND STOP OF THE TWO CIRCUITS CONFIGURED WITH CAPACITY STEPS
During the start and the stop of the function the time delay rC02 and rC03 are not counted and the valve is
immediately turned on or off.
RECOVERY START OF THE TWO CIRCUITS CONFIGURED WITH MORE THAN ONE CAPACITY STEP
Circuits 1 and 2 configured with more than one step of power (eg each circuit with three compressors), if the
thermoregulation requires to turn on one or more resources and the recovery is activated from the digital
input the unit turns on only one step and then waits the rC02 delay (this delay keep off all the other steps
after the recovery is started). After the delay the recovery valve is turned on and, after the rC03 time (this
delay keeps off all the other steps after the recovery is started), the other resources if necessary are turned
on.
RECOVERY STOP OF THE TWO CIRCUITS CONFIGURED WITH MORE THAN ONE CAPACITY STEP
Circuits 1 and 2 configured with more than one step of power (Eg. each circuit with three compressors). After
the rC04 time delay (minimum on time of the recovery function when activated) if the digital input of the
recovery is not active the units stops the new resources for the time set in rC02. After this delay the recovery
valve is turned off and the regulation restarts with its normal running condition.
RECOVERY START OF THE TWO CIRCUITS WITH ALL THE CAPACITY STEPS ACTIVATED
When the system is running with 100% (eg all the three compressor of a circuit are on) of power and the
digital input start the recovery function: before turning on the recovery valve one of the step (depending on
the time running hours), is turned off for the time set in rC02. After rC02 the recovery valve is turned on.
Then, after the rC03 time (this delay keeps off all the other steps after the recovery is started) the resource
forced off if necessary is turned on again.
RECOVERY STOP OF THE TWO CIRCUITS WITH ALL THE CAPACITY STEPS ACTIVATED
When the system is running with 100% (eg all the three compressor of a circuit are on) of power and the
digital input stop the recovery function: after the rC04 time delay (minimum on time of the recovery function
when activated) and before turning off the recovery valve, one of the step is turned off for the time set in
rC02. When the delay is expired the unit turns off the recovery valve and and the regulation restarts with its
normal running condition.
ATTENTION:
For both the circuits: when the compressor are off because of the thermoregulation and the digital input of
the recovery function is active, the recovery valve is disabled.
45.2 UNIT WITH TWO IDRAULIC CIRCUIT WORKING IN PARALLEL
FUNCTIONING
Par.
rC01
= 2 unit with two circuits working in parallel:
The recovery function from the digital inputs is divided in two steps:
UNIT WITH ONE CIRCUIT RUNNING
If the recovery function is enabled and if the condenser temperature/pressure condition are within the limits
that circuit starts the recovery when one of the digital inputs is activated. With active digital input the recovery
valve of the circuit is on.
