Carrier AquaEdge 23XRV - Page 49

49
Table 5 — Protective Safety Limits and Control Settings
MONITORED
PARAMETER
ALARM
OR
ALERT
STATE
LIMIT COMMENTS
Temperature
Sensors Out of
Range
260-273
140,141
-40 deg F>Temperature>245 deg F for 3 seconds Preset Alarm. See Temperature vs. Resistance/Voltage
Drop in Tables 10 and 11
Pressure
Transducers Out
of Range
262-273 0.06>Voltage Ratio>0.98 for 3 seconds Preset Alarm Voltage Ratio=Input Voltage/Voltage
Reference(5 Volts)
High Compressor
Discharge
Temperature
231 COMP DISCHARGE TEMP > 180 deg F(82 deg C) Preset Alarm, Configure DISCH TEMP ALERT in SETUP1
screen
162 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT
Configure COMP DISCH ALERT in SETUP1 screen
103 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT – 10 deg F(5.6 deg C)
Prestart Alert, Configure COMP DISCHARGE ALERT in
SETUP1 screen
High Motor
Temperature
233 COMP MOTOR WINDING TEMP > 244 deg F(118 deg C)
or < –5 deg F(–21 deg C) — Open Circuit
Preset Alarm
102 COMP MOTOR WINDING TEMP > COMP MOTOR TEMP
OVERRIDE – 10 deg F(5.6 deg C)
Prestart Alert, Configure COMP MOTOR TEMP
OVERRIDE in SETUP1 screen
Low Evaporator
Temperature
(Freeze
Protection)
243 Chiller in RECYCLE SHUTDOWN and CALC EVAP SAT
TEMP or EVAP REFRIG LIQUID TEMP < EVAP REFRIG
TRIPPOINT + 1 deg F
Preset Alarm, Configure EVAP REFRIG TRIPPOINT in
SETUP1 screen
232 For water: EVAP REFRIG LIQUID TEMP or CALC EVAP
SAT TEMP TEMP < 33 deg F and EVAPORATOR
APPROACH < EVAP APPROACH ALERT
Preset Alarm, Configure EVAP APPROACH ALERT in
SETUP1 screen
For brine: EVAP REFRIG LIQUID TEMP or CALC EVAP
SAT TEMP is between 0 deg F(-17.8C) and 40 deg F
(4.4 C) (brine) and EVAPORATOR APPROACH < EVAP
APPROACH ALERT
Configure EVAP APPROACH ALERT and CHILLED
MEDIUM in SETUP1 screen
104 CALC EVAP SAT TEMP < 33 deg F + REFRIG OVER-
RIDE DELTA T (non-brine)
Prestart Alert, Configure REFRIG OVERRIDE DELTA T in
SETUP1 screen
CALC EVAP SAT TEMP < EVAP REFRIG TRIPPOINT
(brine) + REFRIG OVERRIDE DELTA T
Prestart Alert, Configure EVAP REFRIG TRIP POINT and
CHILLED MEDIUM in SETUP1 screen
Transducer
Voltage Fault
239 TRANSDUCER VOLTAGE REF<4.5 VDC Preset Alarm
High Condenser
Pressure
- Control
235 CONDENSER PRESSURE > 166 PSI Preset Alarm
- Switch
207 High Pressure Switch Open(165 ± 5 PSIG) & VFD START
= YES
Preset Alarm, Switch closes at 110 ± 7 PSIG
- Prestart
106 CONDENSER PRESSURE > COND PRESS OVERRIDE
– 25 PSI
Prestart Alert, Configure COND PRESS OVERRIDE in
SETUP1 screen
Low Condenser
Pressure (Freeze
Protection)
244 Chiller in PUMPDOWN mode and CONDENSER REFRIG
TEMP < CONDENSER FREEZE POINT
Preset Alarm, Configure CONDENSER FREEZE POINT in
SETUP1 screen.
154 Energizes condenser pump relay if CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT. De-
energizes condenser pump relay when CONDENSER
REFRIG TEMP > CONDENSER FREEZE POINT + 5
deg F (2.8 deg C) and ENTERING COND LIQUID > CON-
DENSER FREEZE POINT
Configure CONDENSER FREEZE POINT in SETUP1
screen
Oil
- Low Pressure
234 OIL PRESSURE DELTA P < 18 PSID after OIL PUMP =
ON, OIL PRESS VERIFY TIME exceeded, and STARTUP
in progress
Preset Alarm, Configure OIL PRESS VERIFY TIME in
SETUP1 screen
- Low Pressure
228 OIL PRESSURE DELTA P < 15 PSID and VFD START =
TRUE
Preset Alarm, condition must persist for 55 consecutive
seconds
- Low Pressure
142 OIL PRESSURE DELTA P < 15 PSID and VFDSTART =
TRUE
Preset Alert, condition must persist for 10 consecutive
seconds
- High Oil
Pressure
164 Oil Pump ON and OIL PRESSURE DELTA P > 45 PSI Preset Alert, condition must persist for 55 consecutive
seconds
- Pressure
Sensor Fault
227 OIL PRESSURE DELTA P > 4 PSI immediately before oil
pump turned on
Preset Alarm
- Low
Temperature
105 OIL SUMP TEMP < 140 deg F and OIL SUMP TEMP <
CALC EVAP SAT TEMP + 15 deg F (8.3 deg C)
Preset Prestart Alert
Line Voltage
- High
211/145 Line voltage > limits are calculated by VFD (alert is
declared if AUTORESTART is ENABLED)
Preset Alarm/Autorestart Alert
- High
108 PERCENT LINE VOLTAGE > 115% Preset Prestart Alert
- Low
212/146 Line voltage < limits calculated by VFD (alert is declared if
AUTORESTART is ENABLED)
Preset Alarm/Autorestart Alert
- Low
107 PERCENT LINE VOLTAGE < 85% Preset Prestart Alert
- Imbalance
216 LINE VOLTAGE IMBALANCE > LINE VOLTAGE %
IMBALANCE
Configure LINE VOLTAGE % IMBALANCE and LINE
VOLT IMBALANCE TIME in VFD_CONF screen
Line Current
- Dropout
210/144 Line Voltage on 2 Phases < 50% for 1 Cycle Preset Alarm/Autorestart Alert
- Imbalance
209/143 LINE CURRENT IMBALANCE>LINE CURRENT %
IMBALANCE
Configure LINE CURRENT % IMBALANCE and LINE
CURRENT IMBALANCE TIME in VFD_CONF screen