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7.18 -  Variable speed fans (option 17)

Air-cooled.units.fitted.with.the.variable.speed.fans.option.

allow for reducing the total unit consumption by adjusting 
the fan speed to the current operating conditions.

The control determines the optimum fan speed based on the 
current compressor capacity, outdoor air temperature, and 
leaving water temperature.

7.19 -   Evaporator heater option (30XA)

The evaporator heater protects the evaporator against frost 
when the unit is stopped at low ambient air temperature. The 
heater is activated in the case of low outdoor air temperature 
conditions.

7.20 -  Free cooling option (30XA)

In air-cooled units only, this option allows for the direct use 
of low outdoor air temperature to cool the water circuit 
without activating the compressors.
 
The direct-expansion free cooling system uses the principle of 
the natural migration of the refrigerant from the evaporator to 
the condenser. The fans and a refrigerant pump ensure the transfer 
of the liquid refrigerant from the condenser to the evaporator, 
which accounts for low power consumption.
 
The free cooling option enables automatic operation as well 
as combined operation of mechanical cooling (compressor 
operation) and free cooling (FREECOOL – Free cooling). 
The control determines which circuit is allowed to run free 
cooling. Each refrigerant circuit can operate independently.

Cooling operation may be performed in the following 
combinations: 
• 

two circuits in mechanical cooling

• 

two circuits in free cooling

• 

one circuit in mechanical cooling and one circuit in 
free cooling

The free cooling option is available for dual-circuit units. It 
requires the installation of SIOB board that controls the 
operation of the motorised mechanical changeover valves 
and the operation of the refrigerant pump. 

Free cooling option is enabled based on the following criteria:
• 

The temperature difference between the outdoor air 
temperature and the controlled water temperature. 

The.threshold.can.be.configured.by.the.user.(GEN_
CONF.–.General.Configuration)

• 

The maximum operating time in free cooling (Full 
Load Timeout) when the water temperature setpoint 
is not reached (

Full Load Timeout,

 GEN_CONF – 

General.Configuration)

7.21 -  Dry cooler option (30XW)

30XW units may come with the dry cooler option that enables 
the control of a Carrier dry cooler. 

The chiller and the dry cooler have to be connected through 
a LEN RS-485.

7.22 -  Hydronic kit option (30XA)

The hydronic kit option allows for continuous monitoring of 

the.water.flow.rate.

 
Hydronic kit option provides the following parameters:
• 

Inlet and outlet water pressure (PUMPSTAT in the 
Main menu)

•.

Evaporator.flow.rate

• 

Evaporator capacity

The. water. flow. rate. is. based. on. the. pressure. difference.

between the evaporator inlet and outlet pressures and the 
evaporator pressure drop curves.

The.evaporator.capacity.is.calculated.according.to.the.flow.

rate, the water constant, and the difference between the 
entering and leaving evaporator water temperature.

7.23 -  30XA-ZE and 30XW-ZE units (HFO)

The Touch Pilot system may also control air-cooled and water-
cooled units with R-1234ze refrigerant (HFO).

Please note that this option comes with advanced electrical box 
fan protection. In the case of the electrical box fan failure, the 
unit is shut down and alarm 10100 is triggered.

7.24 -  High condensing temperature option (30XW)

7.24.1 -  

R134a configuration 

For water-cooled units only, the economizer enables the 
increase of the maximum condensing threshold. This means 
that the saturated condensing temperature can reach a 
maximum of 63°C (145°F) compared with a maximum of 50°C 

(122°F).for.units.that.are.not.fitted.with.this.option.

7.24.2 -  

HFO configuration 

For HFO units (30XW units with R-1234ze refrigerant), the 
high condensing option authorizes the saturated condensing 
temperature to reach a maximum of 70°C (158°F) compared 

with.a.maximum.of.55°C.(131°F).for.units.that.are.not.fitted.

with this option.

7.25 -  Maximum condenser leaving water 

temperature option (30XW)

For water-cooled units only, this option allows the user to 
limit the condenser leaving water temperature to 45°C 
(113°F) and enables to limit the current absorbed by the 
compressor. When the condensing temperature reaches 44°C 
(111°F), the increase in the compressor loading is stopped. 
When the temperature exceeds 45°C (113°F), the compressor 
is unloaded.

Summary of Contents for 30XA-ZE

Page 1: ...CONTROLS MANUAL Operation instructions Original document Touch Pilot Control AquaForce PUREtec with R 1234ze E 30XA XAS XW 30XA ZE XW ZE...

Page 2: ...ace access 13 5 2 Web browser configuration 13 5 3 Technical documentation access 13 6 TOUCH PILOT INTERFACE DETAILS 14 6 1 Menu structure 14 6 2 Detailed menu description 15 6 3 Alarms menu 20 6 4 Co...

Page 3: ...7 21 Dry cooler option 30XW 31 7 22 Hydronic kit option 30XA 31 7 23 30XA ZE and 30XW ZE units HFO 31 7 24 High condensing temperature option 30XW 31 7 25 Maximum condenser leaving water temperature...

Page 4: ...recommended to ensure optimal operation of the equipment as well as the optimization of all available functionalities Note that this document may refer to optional components and certain functions op...

Page 5: ...ames with great care IMPORTANT Some specific safety precautions should be taken in case of HFO units For more information about handling the equipment safely please refer to the IOM Unit documentation...

Page 6: ...the boards otherwise the boards may be damaged In the event of a power supply interrupt the unit restarts automatically without the need for an external command However any faults active when the sup...

Page 7: ...eat reclaim option Suction gas temperature sensor This sensor is used to control the suction gas temperature It is located at the suction line of each compressor Discharge gas temperature sensor Thiss...

Page 8: ...unit Heat reclaim condenser flow status 30XA only SIOB Heat reclaim DI 01 J1 Used to verify the water flow on the condenser side Heat reclaim enable switch 30XA only SIOB Heat reclaim DI 02 J1 Used to...

Page 9: ...Setpoint NOTE The synoptic screen display may vary depending on pumps configuration 4 TOUCH PILOT CONTROL INTERFACE 4 1 General description Touch Pilot includes the 5 in touch screen allowing for easy...

Page 10: ...hutdown by pressing Confirm Stop or return to the previous screen by pressing the Back button Once the unit has been stopped the Synoptic screen will be displayed see also section 4 2 2 Shows the last...

Page 11: ...he necessary changes Press the Up Down buttons to navigate between the screens Once all the necessary modifications have been made press to confirm or to cancel changes 4 4 1 General parameters screen...

Page 12: ...e selected period will be presented in the form of the green band on the timeline Press to confirm or to cancel changes 1 Selection of the applicable days for the time schedule 2 Modification of the p...

Page 13: ...and use a direct connection NOTE Two users can be connected simultaneously with no priority between them The last modification is taken into account 5 3 Technical documentation access When theTouch P...

Page 14: ...14 6 TOUCH PILOT INTERFACE DETAILS 6 1 Menu structure...

Page 15: ...y Running Ready Override Tripout Test Runtest 3 0 to 1 Net Cmd Start Stop Unit start stop via Network 4 0 to 1 Net Cmd Occupied Unit time schedule via Network 5 min Minutes Left for Start Minutes befo...

Page 16: ...conomizer Gas Temp B Economizer gas temperature circuit B 28 C Economizer Gas Temp C Economizer gas temperature circuit C 29 C Dry Cool Leav Water Tmp Dry Cooler Leaving Water Temperature units fitted...

Page 17: ...own Indicator State Shutdown indicator status 21 0 to 100 Cond 3 Way Valve Pos Condenser 3 way valve position 22 off on Cooler Heater Command Evaporator heater command status 23 off on Ready or Runnin...

Page 18: ...s condenser pump 1 12 hour Condenser Pump 2 Hours Operating hours condenser pump 2 not available 13 hour Free Cool A Pump Hours Pump operating hours in Free Cooling circuit A 14 hour Free Cool B Pump...

Page 19: ...lve status circuit B Depends on the selected language English by default FREECOOL Free cooling No Status Unit Displayed text Description 1 GENERAL PARAMETERS GENERAL PARAMETERS 2 0 to 1 Free Cooling D...

Page 20: ...26 6 7 C Cooling Ice Setpoint Ice storage setpoint 4 0 1 to 11 1 0 6 C Cooling Ramp Loading Cooling ramp loading setpoint 5 26 7 to 63 37 8 C Heating Setpoint 1 Heating setpoint 1 6 26 7 to 63 37 8 C...

Page 21: ...6 1 to 15 1 min Unit Off to On Delay Unit Off to On delay 7 00 00 0 Night Mode Start Hour Night mode start time 8 00 00 0 Night Mode End Hour Night mode end time 9 0 to 100 100 Night Capacity Limit N...

Page 22: ...no reset value 8 10 to 51 7 10 C OAT Full Reset Value OAT max reset value 9 0 to 13 9 0 C Delta T No Reset Value Delta T no reset value 10 0 to 13 9 0 C Delta T Full Reset Value Delta T max reset valu...

Page 23: ...ek of the month Depends on the selected language English by default DATETIME Date Time configuration No Status Default Displayed text Description Date DD MM YY 1 1 to 31 Day of month Day of the month...

Page 24: ...en remote off active unoccupied remote off active disabled network off active unoccupied network off active local unoccupied local off active open remote remote off active remote unoccupied remote off...

Page 25: ...vailable the unit is stopped and started again with the second pump If there is no pump available the unit shuts down Units are fitted with the flow switch allowing for the water flow control For more...

Page 26: ...eating setpoint 2 heating auto occupied heating setpoint 1 heating auto unoccupied heating setpoint 2 Any configuration default configuration REMOTE OPERATING TYPE Parameter status Active setpoint Hea...

Page 27: ...dtoprotectthecompressors 7 8 Current limitation Current limitation is used via the demand limit function If the current limitation is active Current Limit Select in the GEN_CONF menu the control calcu...

Page 28: ...units This function determines in which order the circuit capacity is changed Compressor loading is managed by starting stopping the compressors and controlling the position of the slide valve Two ty...

Page 29: ...95 35 0 0 100 100 95 30 0 0 100 100 100 0 0 0 Loading sequence Unloading sequence Lead circ Lag circ 1 Lag circ 2 Lead circ Lag circ 1 Lag circ 2 0 0 0 100 100 100 30 0 0 100 100 95 35 0 0 100 100 90...

Page 30: ...he contact is closed the unit enters the ice storage mode Space temperature AI 01 J25 Analogue input Active setpoint reset via space temperature control Capacity limit control AI 10 J9 Analogue input...

Page 31: ...g Full Load Timeout when the water temperature setpoint is not reached Full Load Timeout GEN_CONF General Configuration 7 21 Dry cooler option 30XW 30XW units may come with the dry cooler option that...

Page 32: ...6 holiday periods Each period is defined by three parameters the month the start day and the duration of the holiday period During the holiday periods the controller will be in occupied or unoccupied...

Page 33: ...ight part of the screen and then select Current Alarms 8 4 Resetting alarms Touch Pilot control distinguishes between two types of alarms General alarms are used to indicate pumps failure transducers...

Page 34: ...ove As above As above 24 15026 Economizer gas thermistor fault circuit C As above As above As above 25 15030 Free cooling liquid thermistor fault circuit A As above Free cooling disabled As above 26 1...

Page 35: ...ump is running Discharge pressure transducer defective refrigerant leak or low condenser water temperature 80 10003 Condenser frost protection circuit B As above Circuit B shuts down but the pump is r...

Page 36: ...uit A Manual None Defective or incorrectly wired solenoid valves defective current transformer 132 10088 Slide valve control unverifiable circuit B Manual None As above 133 10089 Slide valve control u...

Page 37: ...temperature and the VFD fan 67 Alarm Option configuration has changed Contact Carrier Service 68 Alarm Emergency stop Contact Carrier Service 71 Alarm PTC 1 emergency stop Contact Carrier Service 72 A...

Page 38: ...rvice 8 Alert DC undervoltage Contact Carrier Service 9 Alert Inverter overloaded Check the VFD output current 10 Alert Motor overtemperature Check the motor temperature 11 Alert Motor thermistor Cont...

Page 39: ...No 13453 07 2016 Supersedes order No 13453 03 2016 Manufacturer Carrier SCS Montluel France Manufacturer reserves the right to change any product specifications without notice Printed in the European...

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