Carrier CCU - Filter Monitoring and Air Flow Control; Compressor Validation and Time Delays; Temperature and Humidity Threshold Alarms; Test Mode, Fault Relays, and Temperature Source

6 - CONFIGURING THE UNIT
Access level No. Description Setting By default Display condition
CHECK THE FILTERS
The values correspond to the unit's maximum air ow.
If there is a variation in the fan speed, these values are reduced proportionally
1 161
Setpoint for di󰀨erential pressure indicating
air ow present
10 to 80 Pa 30 Pa P02 ≠ 17
1 162
Setpoint for di󰀨erential pressure indicating
lter fouling
60 to 500 Pa 150 Pa
1 163
Setpoint for di󰀨erential pressure indicating
lter blocked
100 to 550 Pa 190 Pa
AIR FLOW CONTROL
2 164 Air ow rate low limit 0 to MIN (P146,10,000) 4000 m³/h P02 = 17
COMPRESSOR VALIDATION
3 181 Validation of compressor circuit 1
0: compressor stopped
1: compressor authorised
1 P17 = 1 to 16
3 182 Validation of compressor circuit 2
0: compressor stopped
1: compressor authorised
1 P17 = 3,4 or 6
TIME DELAY
2 185
Warm-up at fan start-up (validation of
detection of T° and RH exceeded)
5 to 180 min 30 min
2 186 Application of control at fan start-up 10 to 180 s 30 s
2 188
Fault taken into account when
temperature or relative humidity exceeded
1 to 5 min 2 min
2 190 Post ventilation of electric heater 1 to 300 min 10 min P08 = 2 or 3
2 191
Delayed fan control after operation
request
0 to 480 s 0 s
2 192 Duration of fan soft start incline 0 to 500 s 30 s P02 > 9
2 193
Rotation time delay for refrigeration
circuits
0 to 240 h 240 h P17 = 3, 4 or 6
CHECKING WHETHER TEMPERATURE THRESHOLDS ARE EXCEEDED
1 200 Temperature upper limit threshold
30 to 75°C if P07 = 0
(P103 + P104) to 75°C if P07 > 0
40°C P07 or P08 > 0
1 201 Temperature low limit threshold
30 to 75°C if P08 = 0
5°C to (P106 - P107) if P08 > 0
10°C P07 or P08 > 0
CHECKING WHETHER HUMIDITY THRESHOLDS ARE EXCEEDED
1 202 Humidity upper limit threshold
40 to 100% RH if P09 = 0
(P109 + P110) to 100% RH if P09 > 0
80% RH P09 or P10 > 0
1 203 Humidity low limit threshold
10 to 40% RH if P10 = 0
10% RH to (P115 - 116) of P10 > 0
20% RH P09 or P10 > 0
TEST MODE
3 204 Test mode
0: no
1: yes
0 P17 > 0
FAULT RELAY
1 205 Minor fault relay direction of action
0: standard standby/active contacts
1: reversed standby/active contacts
1
1 206 Major fault relay direction of action
0: standard standby/active contacts
1: reversed standby/active contacts
CONTROLLED TEMPERATURE ORIGIN SELECTION
2 207 Controlled temperature origin
0: sensor connected to the controller
1: value received by ModBus
2: 2-10 V sensor connected to the
controller
3: cooling percentage by 2-10 V signal
0 P07 > 0 or P08 > 0
2 208
Time before switch to controller sensor
when value not received by ModBus
5 to 180 s 30 s
(P07 > 0 or P08 > 0) and
P207 = 1
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