Carrier 30RQ Operation And Maintenance Instructions
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Carrier 30RQ Operation And Maintenance Instructions

Pro-dialog plus control
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30RB/30RQ
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Operation and maintenance instructions
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Summary of Contents for Carrier 30RQ

  • Page 1 30RB/30RQ Pro-Dialog Control Operation and maintenance instructions...

  • Page 2: Table Of Contents

    COnTenTs 1 - sAFeTY COnsIDeRATIOns ............................... 3 1.1 - General ...................................... 3 1.2 - Avoid electrocution .................................. 3 2 - GeneRAL DesCRIPTIOn ..............................3 2.1 - General ...................................... 3 2.2 - Abbreviations used................................... 3 3 - HARDWARe DesCRIPTIOn ............................... 4 3.1 - General ......................................

  • Page 3: Safety Considerations

    Pro-Dialog is a system for controlling single-, dual- or triple- hazardous if certain factors particular to the installation are circuit 30RB air-cooled liquid chillers or 30RQ air-to-water not considered: operating pressures, presence of electrical heat pumps. Pro-Dialog controls compressor start-up needed...

  • Page 4: Hardware Description

    3 - HARDWARE DESCRIPTION 3.2 - Electrical supply to boards 3.1 - General All boards are supplied from a common 24 V a.c. supply referred to earth. Figure 1 - control board CAUTION: Maintain the correct polarity when connecting the power supply to the boards, otherwise the boards may be damaged.

  • Page 5: The Controls

    3.5 - The controls 3.6 - Connections at the user’s terminal block evaporator pumps 3.6.1 - General description The controller can regulate one or two evaporator pumps The contacts below are available at the user’s terminal block and takes care of automatic change-over between pumps. on the PD5-BASE board (see figure 1).
  • Page 6 Heat pump units Description Connector/ Terminal Board Remarks channel Evaporator pump 1 control J2A / CH19 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over between the two pumps. Evaporator pump 2 control J2A / CH20 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over between the two pumps.

  • Page 7: Setting Up Pro-Dialog Plus Control

    4 - SETTING UP PRO-DIALOG PLUS CONTROL 4.1 - User interface general features Dual-circuit chiller interface Dual-circuit heat pump interface Main interface Summary interface Main interface Summary interface Menu block Menu block Triple-circuit chiller interface The local interface enables a number of operating para- Main interface Summary interface meters to be displayed and modified.

  • Page 8: Unit Start/Stop Control

    4.2 - Unit start/stop control The summary interface (right hand section) includes a mimic diagram of the unit, together with push-buttons and LEDs. 4.2.1 - Description It gives quick access to the main operating parameters of The unit start/stop can be controlled by one of the following the unit.

  • Page 9: Menus

    The following example shows how to access item 3 in the Start-up with the previously used operating type when the unit is stopped in local mode (loff) Pressures menu. Button Action 2-digit 4-digit display display The unit is in local stop mode. The previously LOFF Selecting a menu item used operating type is local on (L-ON)

  • Page 10: Expand Display

    4.3.4 - expand display Pressing the Enter button causes a 23 character text expan- sion to be scrolled across the four-digit display. All user menus provide an expansion of the current displayed parameters. If the expansion is complete the four-digit display reverts to item value.
  • Page 11 Menu structure...
  • Page 12 Menu tree structure...
  • Page 13 4.3.5 - Description of the Information menu Information menu (3) Item Format Units Description Automatic display mode. It cycles through the following displays: ±nn.n °C 1: Controlled water temperature: temperature of the water that the unit tries to maintain at the control point. 2: Unit operating type LOFF Local Off...
  • Page 14 Information menu (3) continued Item Format Units Description 14 [2] Setpoint occupied mode. occu Occupied: cooling setpoint 1 is active unoc Unoccupied: cooling setpoint 2 is active Forc The value shall be displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN. ±nn.n °C Active setpoint.

  • Page 15: Description Of The Temperatures Menu

    4.3.6 - Description of the Temperatures menu Temperatures menu [1] Item Format Units Comments ±nn.n °C Heat exchanger entering water temperature ±nn.n °C Heat exchanger leaving water temperature ±nn.n °C Outdoor temperature 3 [1] ±nn.n °C Heat reclaim entering water temperature (only if heat reclaim option is configured) 4 [1] ±nn.n °C...

  • Page 16: Description Of The Setpoints Menu

    4.3.8 - Description of the setpoints menu Setpoints menu [2] Item Format Units Range Comments ±nn.n °C -28 to 26 This item lets you modify Cooling setpoint 1. ±nn.n °C -28 to 26 This item lets you modify Cooling setpoint 2. 2 [1] ±nn.n °C...

  • Page 17: Description Of The Inputs Menu

    4.3.9 - Description of the Inputs menu Inputs menu [1] Item Format Units Comments oPEn/CLoS Remote contact 1 status (on/off switch). If the auto cooling/heating changeover function is not selected (User Configuration 1), this contact is used to start and stop the unit. If the auto cooling/heating changeover function is selected, this contact is multiplexed with contact 4 to permit starting and stopping the unit and the selection of heating/cooling/auto.
  • Page 18 4.3.10 - Description of the Outputs/Tests menu 4.3.10.1 - General This menu displays the status of the controller outputs. Moreover, when the machine is fully stopped (LOFF) the outputs can be activated for manual tests (the access to the tests is password controlled). 4.3.10.2 - Menu description Main outputs menu Item...
  • Page 19 Outputs status & Tests menu (continued) Item Format Units Description 0 to 6 Fan status, circuit C. Permits selection of the fan to be tested. tESt 1 = fan C1 2 = fan C2 3 = fan C3 4 = fan C4 5 = fan C5 6 = fan C6 Alarm status...
  • Page 20 Submenu outputs 2 (selection) (continued) Item Format Units Description Boiler operating status. On: operating tESt OFF: stopped Free cooling 3-way valve status (only displayed when the free cooling option is selected). = 3-way valves, circuit A = 3-way valves, circuit B = 3-way valves, circuit C 0 corresponds to a closed valve (cooling position) and 1 corresponds to an open valve (free cooling position) Free cooling refrigerant pump status (only displayed when the free cooling option is selected).
  • Page 21 Sub-menu user configuration Item User 1 User 2 Date Schedule 1 Schedule 2 Holidays Broadcast [USER1] [USER2] [dAtE] [ScHEduLE 1MEnu] [ScHEduLE 2 MEnu] [HOLidAy MEnu] [BrodCASt] Return to previous menu Return to previous menu Return to previous Return to previous Return to previous Return to previous menu Return to previous...
  • Page 22 4.3.11.3 - Description of the User 1 Configuration sub-menu User 1 Configuration sub-menu Item Format Units Comments USEr MEnu When selected this item authorises return to the previous menu. 1 [1] 0/1/2/3 Selection of lead circuit. 0 = automatic; 1 = circuit A; 2 = circuit B; 3 = circuit C Load sequence selection.
  • Page 23 4.3.11.4 - Description of the User 2 Configuration sub-menu User 2 Configuration sub-menu Item Format Units Comments 0 [1] USEr 2 Menu When selected this item authorises return to the previous menu. «YES/no» Periodic pump quick-start of the water pump(s) Yes = the pump is started periodically when the unit is manually stopped.
  • Page 24 4.3.11.5 - Description of Date and Time configuration sub-menu Date & Time configuration sub-menu Item Format Comments dAtE MEnu When selected this item authorises return to the previous menu. Current time setting. 00:00 to 23:59 : hours (00 to 23). The first time the Enter button is continuously pressed, the first two characters in the 4-digit display flash so that hours can be adjusted.
  • Page 25 Typical timer program: ATTENTION: The broadcast function must be activated to utilise the holiday schedule, even if the unit is running Time in stand-alone mode (not connected to CCN). See section 4.3.11.8. Holiday period X configuration sub-menus (X = 1 to 16) Item Format Comments...

  • Page 26: Description Of The Alarms Menu

    4.3.12 - Description of the Alarms menu 4.3.14.1 - Description of the Runtimes 1 menu This menu is used to display and reset up to 5 active alarms. It also permits alarm reset. If no alarm is active this menu Runtimes menu [1] Item Format...
  • Page 27 4.3.14.3 - Description of the Runtimes 3 menu 4.3.14.4 - Maintenance menu description To be active, the maintenance function must be preset in the Service configuration. Runtimes menu Item Format Units Comments RuntiME 3 menu When selected this item Item Format Description authorises return to the...

  • Page 28: Pro-Dialog Plus Control Operation

    5 - PRO-DIALOG PLUS CONTROL OPERATION • start/stop schedule: occupied or unoccupied status of the unit as determined by the chiller start/stop program 5.1 - Start/stop control (Schedule #1). • Master control type. This parameter is used when the The table below summarises the unit control type and stop unit is the master unit in a two chiller lead/lag arrange- or go status with regard to the following parameters.

  • Page 29: Evaporator Water Pump Control

    5.2.2 - Heating/cooling/auto selection Remote heating/cooling contacts: these contacts are • The table below summarises the unit heating/cooling only active if the unit is under remote control. See operation, based on the following parameters: sections 3.6.2 and 3.6.3. • Control type: indicates whether the unit operates in •...
  • Page 30 Depending on the current operations, the active setpoint The following tables summarise the possible selections can be selected by choosing the item in the Information depending on the control types (local, remote or CCN) menu, with the user’s volt-free contacts, with network and the following parameters: •...

  • Page 31: Demand Limit

    5.7 - Demand limit 5.11 - Defrost function The demand limit is used to restrict the unit power consump- Defrost is activated, when the unit is in heating mode, in tion. The Pro-Dialog control system allows limitation of order to reduce frost build-up on the air heat exchanger. the unit capacity, using one of two methods: The defrost cycle can only be applied to one circuit at a •...

  • Page 32: Optional Heat Reclaim Module

    The default value of the dead band is 4.4 K. This value can a con-figurable value, ensuring that the running times of be modified by Carrier Service. the two units are automatically equalised. The changeover between lead machine and follower may take place when Changeover procedure from cooling to heat reclaim mode: the assembly is started up, or even whilst running.

  • Page 33: Diagnostics - Troubleshooting

    6 - DIAGNOSTICS - TROUBLESHOOTING The prevention or authorisation of free cooling mode operation can be controlled by the local interface or 6.1 - General remotely by customer contact 4 or by the CCN network. If pre-cooling is prohibited, free cooling starts if: The Pro-Dialog Plus control system has many fault tracing •...

  • Page 34: Alarm Codes

    6.4 - Alarm codes The following list gives a complete description of each alarm code and its possible cause. Alarm code descriptions Alarm code Alarm description Reset type Probable cause Action taken by the control Thermistor faults th-01 Sensor fault, fluid entering water heat exchanger Automatic when the Defective thermistor Unit is shut down...
  • Page 35 Alarm code descriptions (continued) Alarm code Alarm description Reset type Probable cause Action taken by the control Process faults P-01 Water heat exchanger frost protection Automatic if the same alarm has Water flow rate to low or Unit is shut down not tripped during the last 24 defective thermistor hours, otherwise manual...
  • Page 36 XX-04 = A1 to A4, B1 to B4 and C1 to C4 Order No. 13440-76, 03.2013. Supersedes order No.: 13440-76,10.2011. Manufactured by: Carrier SCS, Montluel, France. Manufacturer reserves the right to change any product specification without notice. Printed in the European Union.

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