System information
C0240111-06-07-GB
31
Mask Description Para n°
Circuit start
bypass 120 s
Start variation
delay 600 s
(only for auto tuning)
Bypass delay between the start of the circuits and the moment the defrost procedure is force
changed if the maximum speed of change in the difference be
tween the external temperature
and the evaporation temperature is exceeded.
If the difference between the external temperature and the evaporation temperature is greater
than the calculated threshold, when the "Variation start delay" elapses, the defrost s
tart delay
specified in the "Change factor" parameter commences.
21.16
21.17
Minimum derived
evaporation
pressure
-00.1 bar/m
(only for auto tuning)
Maximum permitted change in evaporation pressure before changing the defrost start delay.
21.18
Forced defrosting
with low pressure
Enabled Y
Threshold 1.7 bar
Minimum permitted evaporation pressure in heatpump. If the pressure falls below this value,
defrosting is forced.
21.19
21.20
Step override
in heatpump
separate 1.7 bar
restore 2.1 bar
Evaporation pressure values at which the circuit with more than one hermetic compressor per
circuit is "separated" to return the operating point within limits.
Evaporation pressure value at which compressor "separation" terminates.
21.21
21.22
Enable
Free Defrost Y
Minimum external
temperature 04.0°C
Enables the Free-Defrost algorithm and sets the minimum external temperature for operation.
21.23
21.24
Drip phase with
compressors on
N
Enables the drip phase with the compressors on after defrosting. 21.25
Recovery
← ↓
Access mask to recovery submenu.
Press "Up" or "Down" to scroll the other masks and
"Esc" to return to the submenu.
Chiller override fm
recovery pressure
Setpoint 23.5 bar
Diff. 5.0 bar
Defines the pressure setpoint and differential at which the recovery mode is forced to chiller.
15.03
15.04
Cyclical override
to chiller from ch+rec
Enable N
Cycle time 060min
Enables override to the chiller mode from the chiller plus recovery mode (only for units with
recovery). Sets the cycle time of this function, that is, the maximum time in the chiller plus
recovery mode. The time is reset every time a mode change occurs.
(NB.: pumpdown is also considered a mode change and therefore the cyclical pumpdown
function in the Ch+rec mode is inconsistent with cyclical override, the function will be
performed with the lowest cycle time.)
15.05
15.06
Override time
in chiller before
passing to ch+rec
120 s
Changing mode to Chiller+Rec. On, requires the Chiller On mode. This mask sets the Chiller
On mode timeout before passing to the Chiller+Rec On mode.
15.07
Condens.
← ↓
Access mask to condensation submenu.
Press "Up" or "Down" to scroll the other masks and
"Esc" to return to the submenu.
Condensation control
Enable : Y
Type : Step Cont.
N° steps : 3
Enables condensation control, the type and number of steps. 17.01
17.02
17.03
Condensation control
Type: Separate
Mod.: PWM
Selects between individual and contemporary condensation. Also sets linear fan operation
(0:Standard - 1:0-10V - 2:PWM - 3:FAE - 4:0-10V C5110973)
17.04
17.05
Condensation control
Logic:
direct
Selects the type of valve for condensation in water-cooled chillers. 17.06
Enable max. override
Chiller cond. NO
Setpoint 23.0 bar
Diff. 3.0 bar
Enables 100% forced condensation in the chiller mode and establishes the setpoint. 17.10
17.11
17.12
Enable max. override
Heat pump evap.
NO
Setpoint 01.0 bar
Diff. 0.5 bar
Used to enable 100% forced evaporation in the heat pump mode and establish the setpoint. 17.13
17.14
17.15
Cont. cond. control
Chiller
Setpoint 14.0 bar
Diff. 05.0 bar
Sets the setpoint and differential for continuous condensation adjustment in the chiller mode.
17.32
17.33
Cont. cond. control
HeatPump
Setpoint 06.0 bar
Diff. 01.0 bar
Sets the setpoint and differential for continuous condensation adjustment in the heat pump
mode.
17.34
17.35