Carel UltraCella - 6.14 Second compressor with rotation

49
ENG
UltraCella +0300083EN - rel. 1.5 - 07.02.2015
Key
Sc Condenser probe
FAN Condenser fans
FC4 Turn off temperature
t Time
A0 Diff erential
Note: if an alarm triggers at condenser probe, the output
condenser fan is always on.
6.11 Duty setting
In the event the alarm “rE” (virtual control probe fault), the parameter c4 is
used to ensure the operation of the compressor until the fault is resolved.
The compressor cannot be activated according to the temperature (due
to the faulty probe), it is activated cyclically with a time of operation (ON)
equal to the value assigned to c4 and a switch-off time (OFF) fi xed at 15
minutes .
CMP
OFF
ON
t
c4 15
Fig. 6.q
Par. Description Def Min Max U.M.
c4 Compressor running time in duty
setting
0 0 100 min
6.12 Bowl resistance
The resistor is used to heat the collection tank after the defrosting phase,
to prevent the ice from blocking the passage of water.
The resistance is activated for 3 minutes before the programmed defrost
or simultaneously with a manual defrost. The resistance is always off after
the defrost phase.
Par. Description Def Min Max U.M.
H1 Confi guration of output AUX1
…
3 = bowl resistance activation
1 0 15 -
H5 Confi guration of output AUX2
…
3 =bowl resistance activation
1 0 15 -
6.13 Defrosting with 2 evaporators
You can confi gure up to 2 defrost probes and up to 2 evaporator outputs.
The control recognizes the confi guration based on the following table
(probe 1 is the control probe and cannot be confi gured)
DEFROST PROBES AND EVAPORATORS OUTPUT CONFIGURATION
Case Defrost
probes
Evaporator
outputs
Notes
1 B2 Evap. 1 B2 acts on the evap. 1
2 B2 Evap. 1 and 2 B2 acts on the evap. 1
3 B2 and B3 Evap. 1 B2 and B3 act on evap. 1 (start
and end of defrost based on the
minimum value probe)
4 B2 and B3 Evap. 1 and 2 B2 acts on the evap. 1 and B3 act
on evap. 2
Tab. 6.b
CASE 4: 2 PROBES AND 2 EVAPORATORS
T
B2
E1
S
F
L
C
CMP
V1
T
B3
E2
V2
Fig. 6.r
Key
E1/2 Evaporator 1/2
C Condenser
V1/2 Thermostatic expansion valve 1/2
L Liquid Receiver
B2/B3 defrost probe 2, 3
CMP Compressor
F Filter drier
S Liquid indicator
6.14 Second compressor with rotation
Second compressor output with double step control with rotation: the
compressors will be turned on as follows:
• alternately for single step requests (as in example 3)
• the fi rst to be turned on will be the fi rst to be turned off for the 2 steps
requests (as in examples 1, 2 and 4)
Par. Description Def Min Max U.M.
H1/H5 Confi guration of output AUX1/AUX2
0 = alarm normally energised
…
13 = second compressor step with
rotation
1 0 15 -
CP2
CP1
OFF
ON
OFF
ON
St+rd
St+rd/2
St
t
t
t
Sv
Fig. 6.s