Carrier Comprehensive Guide to Air Conditioner Operations for 30RA Models

Page 30

ACTIVE OPERATING TYPE

 

 

 

STATUS OF PARAMETERS

 

 

 

CONTROL

UNIT

 

 

 

 

 

 

 

 

 

 

 

 

TYPE

MODE

LOFF

L-C

L-SC

rEM

CCN

MASt

CHIL_S_S

REMOTE

MASTER

START/STOP

CCN

GENERAL

 

 

 

 

 

 

 

 

 

START/STOP

CONTROL

SCHEDULE

EMERGENCY

ALARM

 

 

 

 

 

 

 

 

 

CONTACT

TYPE

MODE

SHUTDOWN

 

 

 

-

-

-

-

-

-

-

-

-

-

Enable

-

-

Off

-

-

-

-

-

-

-

-

-

-

-

Yes

-

Off

Active

 

 

 

 

 

-

-

-

-

 

-

Local

Off

 

 

Active

 

 

 

-

-

-

Unoccupied

 

-

Local

Off

 

 

 

Active

 

 

-

Off

-

-

 

-

Remote

Off

 

 

 

Active

 

 

-

-

-

Unoccupied

 

-

Remote

Off

 

 

 

 

Active

 

Disable

-

-

-

 

-

CCN

Off

 

 

 

 

Active

 

-

-

-

Unoccupied

 

-

CCN

Off

 

 

 

 

 

Active

-

-

Local

Unoccupied

 

-

Local

Off

 

 

 

 

 

Active

-

Off

Remote

-

 

-

Remote

Off

 

 

 

 

 

Active

-

-

Remote

Unoccupied

 

-

Remote

Off

 

 

 

 

 

Active

Disable

-

CCN

-

 

-

CCN

Off

 

 

 

 

 

Active

-

-

CCN

Unoccupied

 

-

CCN

Off

 

Active

 

 

 

 

-

-

-

-

Disable

No

Local

On

 

 

Active

 

 

 

-

-

-

Occupied

Disable

No

Local

On

 

 

 

Active

 

 

-

On cooling

-

Occupied

Disable

No

Remote

On

 

 

 

Active

 

 

-

On heating

-

Occupied

Disable

No

Remote

On

 

 

 

Active

 

 

-

On auto

-

Occupied

Disable

No

Remote

On

 

 

 

 

Active

 

Enable

-

-

Occupied

Disable

No

CCN

On

 

 

 

 

 

Active

-

-

Local

Occupied

Disable

No

Local

On

 

 

 

 

 

Active

-

On cooling

Remote

Occupied

Disable

No

Remote

On

 

 

 

 

 

Active

-

On heating

Remote

Occupied

Disable

No

Remote

On

 

 

 

 

 

Active

-

On auto

Remote

Occupied

Disable

No

Remote

On

 

 

 

 

 

Active

Enable

-

CCN

Occupied

Disable

No

CCN

On

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.2 - Heating/cooling/standby operation

5.2.1 - General

The heating/cooling/standby selection applies to all units. But only 30RA/RY (liquid chillers) units, controlling a boiler and 30RH/RYH (heat pumps) units can change over to heating mode. Heating/cooling control can be automatic or manual.

5.2.2 - Heating/cooling/auto selection

The table below summarises the unit heating/cooling opera- tion, based on the following parameters:

-Control type: indicates whether the unit operates in local, remote or CCN mode. See section 5.1.

-Unit on/off status: indicates whether the unit is shut down (not authorised to start) or in operation (or authorised to start).

In automatic mode the outdoor temperature determines the

-

heating/cooling/standby changeover based on the two

 

threshold values configured by the user (see Setpoint menu for

 

cooling and heating mode changeover thresholds). If the unit is in

-

standby it does not cool or heat, and no compressor can be

 

activated. The diagram below summarises the operating

 

principle in automatic mode.

-

HEATING

STANDBY

COOLING

-

 

 

 

Outdoor

 

 

 

temperature

 

Heating

Cooling

 

 

threshold*

threshold

 

Heating/cooling/auto selection in local mode: operating mode selected via the user interface. See Information menu.

Remote heating/cooling contacts: these contacts are only active if the unit is under remote control. See sections 3.6.2 and 3.6.3.

HC_SEL: this network command permits heating/ cooling/auto control, if the unit is in CCN operating mode.

Outdoor temperature: determines the operation, if the unit is in automatic heating/cooling/standby changeover mode.

*This threshold does not apply to cooling only units that do not control a boiler.

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Contents Operation and maintenance instructions 30RA/RH B 30RY/RYH B PRO-DIALOG ControlTable of Contents Safety Considerations PRO-DIALOG Control Operation Abbreviations used GeneralAvoid electrocution Following abbreviations are used frequentlySensors Electrical supply to boardsLight emitting diodes on boards Pressure sensorsControls Connections at the users terminal blockDUAL-CIRCUIT Units BaseNRCP-BASE CCN Volt-free contact on/off/cooling/heating with multiplexing OFFMain Interface Button Name Description Local interface general featuresMain interface Not available on the PRO-DIALOG Junior interfaceDescription Stopping the unit in local modeUnit start/stop control Starting unit and selecting an operating typeSelecting a menu Modifying the value of a parameter/access to a sub- menuMenus Selecting a menu itemExpand display Menu Menu tree structure Active alarm code Historic alarm codeActive alarm code Historic alarm SUB-MENUDescription of the Information menu Information Menu Format Units DescriptionInformation Menu Format Units DescriptionPressures Menu Format Units Comments Temperatures Menu Format Units CommentsDescription of the Setpoints menu Setpoints Menu Format Units Range CommentsReset Thresholds in Cooling or Heating Mode Leaving Water Temperature Control Setpoint CEntering Water Temperature Control Description of the Inputs menuDescription of the Outputs/Tests menu General Menu descriptionOutputs Status & Tests Menu 2 Format Units Description Outputs Status & Tests Menu 2 Manual testsAutomatic tests Additional heating stage statusTest Number Description Confirmation Description of the configuration menu General PasswordTest Fault Description SUB-MENU Period Configuration SUB-MENU Holiday ConfigurationDescription of the User 1 Configuration sub-menu User 1 Configuration SUB-MENU Format Units Default CommentsDescription of the User 2 Configuration sub-menu Description of Date and Time configuration sub MenuDate & Time Configuration SUB-MENU Format Comments Typical timer program Description of the Holidays sub-menusBroadcast Configuration SUB-MENU Description of the Broadcast sub-menuItem # Format Comments Runtime menu description Description of the Alarms menuDescription of the Alarms History menu Description of the Runtimes 1 menuStart/stop control Maintenance menu descriptionDescription of Runtimes 2 menu Item # Format Units DescriptionHeating/cooling/standby operation Heating/cooling/auto selectionCCN Evaporator antifreeze protection Evaporator water pump controlControl interlock contact Control pointCooling setpoint Heating setpointDemand limit ResetNight mode Reset example in cooling mode Capacity controlAdditional electric heater stage control Master/slave assemblyDefrost function Control of a boilerAlarm codes Displaying alarmsResetting alarms Then, 2 ALArM Then, no ALArMAlarm Code Descriptions

30RY/RYH, 30RA/RH specifications

The Carrier 30RY/RYH and 30RA/RH chiller models are leading solutions in commercial and industrial cooling applications. Renowned for their reliability, efficiency, and advanced technologies, these chillers cater to a wide variety of settings, from office buildings to manufacturing facilities.

The 30RY/RYH series features a distinctive design optimized for performance, utilizing a centrifugal compressor that ensures smooth operation under varying loads. One of the standout features of these chillers is their high-efficiency capabilities, which contribute to lower energy consumption. The models are engineered to deliver substantial energy savings, meeting or exceeding the latest ASHRAE and DOE efficiency standards.

A significant aspect of the 30RY and 30RA models is their use of environmentally friendly refrigerants. The 30RYH, for instance, employs R-134a refrigerant, which is designed to minimize ozone depletion while maximizing efficiency. This commitment to sustainability aligns with modern environmental regulations and practices, making these chillers a wise choice for eco-conscious projects.

In terms of control technology, the chiller models come equipped with advanced microprocessor-based controls, providing users with optimal system management and diagnostics. This integrated control system enhances the overall performance and reliability of the chillers, allowing for real-time monitoring and adjustment to ensure peak operational efficiency.

Another key feature is the quiet operation of the 30RY/RYH and 30RA/RH series. Designed with sound attenuation in mind, these units minimize noise pollution, making them suitable for installations in noise-sensitive environments. Additionally, the modular design allows for easy installation and maintenance, reducing downtime and providing flexibility in system design.

Both series also offer robust thermal performance, with the capability to handle a wide range of operating conditions. The chillers excel in terms of cooling capacity, providing solutions for varying thermal loads while maintaining energy efficiency. This adaptability is invaluable for facilities managing seasonal changes in cooling demands.

In summary, the Carrier 30RY/RYH and 30RA/RH chillers represent an ideal blend of efficiency, advanced technology, and eco-friendliness. Their high-performance capabilities, user-friendly controls, and sustainable design make them a top choice for commercial and industrial applications, ensuring dependable cooling solutions for diverse environments.