Carrier 48/50PD05 manual Modes, Unit Configuration

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48/50PD

Password Enable (PROT)

This variable enables or disables the use of a password. The password is used to restrict use of the control to change configurations.

Service Password (PSWD)

This variable is the 4-digit numeric password that is required if enabled.

Test Display LEDs (TEST)

This is used to test the operation of the ComfortLinkt display.

Modes

The ComfortLink controls operate under a hierarchy of command structure as defined by four main elements: the System Mode, the HVAC Mode, the Occupied status, and the Unit Control Type.

The System Mode is the top level that defines three main states of the control system: Disabled, Enabled, or Test.

The HVAC Mode is the next level that defines four main states of functional operation: Disabled, Fan Only, Cool, and Heat.

The Occupied status affects set points for cooling and heating in Space Sensor control mode and operation of the economizer for indoor air quality ventilation and free cooling.

The general operating mode of the control and the status of some related operation lockouts are located on the display at two locations: Run Status→ MODE and Operating Modes→ MODE.

System Mode (SYS)

In Run Status and Operating Modes, the current system mode is displayed with expandable text. This is an overall state of the unit. Three states are: Unit Operation Disabled, Unit Operation Enabled, or Service Test Enabled.

HVAC Mode (HVAC)

In Run Status and Operating Modes, the current allowed HVAC mode is displayed with expandable text. This is the mode the unit decides to run in based on its inputs. There are four main HVAC modes; cooling has three different expanded texts. These modes are shown below.

HVAC

Expanded Text

Brief Description

Mode

 

 

Disabled

HVAC Operation

Unit is in test mode or System mode is

 

Disabled

disabled

Fan Only

Ventilation

Fan may run for ventilation

 

(fan-only)

 

 

 

 

Cooling

Cooling

Mechanical cooling

 

Free Cooling

Only economizer used for cooling

 

Unoccupied Free

Only economizer use for cooling

 

Cooling

(occupied cooling set point active)

 

 

 

Heating

Heating

Heating mode

Remote HVAC Mode Disabled (HV.DN)

Allow disabling of HVAC mode. This is only available on a network connection.

Cool Setpoint in Effect (EFF.C)

This shows the actual setpoint that is being used for control during cooling mode.

Heat Setpoint in Effect (EFF.H)

This shows the actual setpoint that is being used for control during heating mode.

Currently Occupied (OCC)

Displays the current state of assumed space occupancy based on unit configuration and inputs.

Timed Override in Effect (T.OVR)

Displays if the state of occupancy is currently occupied due to an override.

Linkage Active (LINK)

Displays if Linkage communication is established between the unit and a Linkage source.

IMPORTANT: The 48/50PD unit only supports the Gen III TEMP Monitor Thermostat.

Demand Limit in Effect (D.LMT)

Displays if a demand limit has been placed on the unit’s capacity.

Circuit OAT Lockout (C.LOC)

Displays if one or more refrigerant circuits operation is prevented due to outdoor temperature limit lockout.

Heat OAT Lockout (H.LOC)

Displays if heating operation is prevented due to outdoor temperature limit lockout.

Econo Cool OAT Lockout (E.LOC)

Displays if economizer operation for cooling is prevented due to outdoor temperature limit lockout.

Unit Configuration

Many configurations that indicate what factory options and/or field accessories are installed and other common operation variables are included in Unit Configuration (Configuration→UNIT). Configuration will be done at the factory for any factory-installed option (FIOP).

Start-Up Delay (S.DLY)

This configuration sets the control start-up delay after the power is interrupted. This can be used to stagger the start-up of multiple units.

Fan On When Occupied (OC.FN)

A YES value will operate the indoor fan whenever the unit is in the Occupied mode. A NO value will operate the indoor fan only when heating or cooling is necessary. The factory default value is YES.

Shut Down on IDF Failure (IDF.F)

This configuration applies only if a fan switch is installed and configured. A YES value will enable diagnostic Alert T409 to shut down the unit when incorrect fan status is sensed. A NO value will still permit Alert T409 but will not cause unit shutdown. The factory default value is YES.

Supply Fan Maximum Speed (FS.MX)

This configuration sets the limit for the highest speed the fan can run out of 100%. This max speed limit applies to the unit at all times except for fan test.

Supply Fan Minimum Speed (FS.MN)

This configuration sets the limit for the lowest speed the fan can run out of 100%. This minimum speed limit applies to the unit during cooling mode and cooling test.

Vent Mode Fan Speed (FS.VM)

This configuration sets the speed the fan will run during the ventilation mode. The fan speed does not vary during ventilation so it will remain at this speed throughout vent mode.

Fan Status Switch (FN.SW)

This configuration identifies if a fan status switch is installed, and what status (normally open, normally closed) the input is when the indoor fan is OFF.

Filter Status Switch (FL.SW)

This configuration identifies if a filter status switch is installed, and what status (normally open, normally closed) the input is when the filter is CLEAN.

Fire Shutdown Switch (FS.SW)

This configuration identifies if a fire shutdown switch is installed, and what status (normally open, normally closed) the input is when the fire or smoke alarm is OFF (no alarm).

Remote Occupancy Switch (RM.SW)

This configuration identifies if a remote occupancy switch is installed, and what status (normally open, normally closed) the input is when UNOCCUPIED.

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Contents Table of Contents Safety Considerations What to do if you smell gasGeneral Basic Control UsageScrolling Marquee Mode and Menu Display Structure System Pilott and Touch Pilot DevicesCCN Tables and Display START-UP Power Supply Internal WiringEvaporator Fan Condenser Fans and MotorsControls Quick SET-UP Accessories CCN CommunicationSetting an Occupied Time Schedule Weekdays Only for 730 to Fan StatusFilter Status TimeclockService Test Programming Operating SchedulesIndependent Outputs Fan TestThird Party Control Controls OperationUnit Configuration ModesGeneral Operating Sequence Occupancy DeterminationCompressor Operation Indoor Fan OperationOutdoor Fan Operation Economizer OperationUnoccupied Free Cooling Indoor Air Quality IAQ Cooling Modes Cool Supply Air Set Point Ventilation Mode For all units with EconomizersFor units with Enthalpy Control Demand Control VentilationHeating Modes Supply-Air Temperature Sensor SAT Gas Heat Start-UpTemperature Compensated Start Setting Up the SystemTemp Comp Strt Cool Factr TCS.C Temp Comp Strt Heat Factr TCS.HCarrier Comfort Network Ccnr Configuration Demand LimitTroubleshooting Alarm HandlingRestart Procedure Complete Unit StoppageAlarms and Alerts Communication FailuresAlert Code T073 Outdoor Air Temperature Thermistor Failure Alert Code T074 Space Temperature Thermistor FailureAlert Code T075 Supply Air Temperature Thermistor Failure Alarm Code A154 Serial Eeprom Hardware FailureAlarm Code T155 Serial Eeprom Storage Failure Error Alarm Code A156 Critical Serial Eeprom Storage Fail ErrorAlarm Code A200 Linkage Timeout Comm Failure Alarm Code A404 Fire ShutdownAlert Code T415 IAQ Input Out of Range Alert Code T416 OAQ Input Out of RangeComfortLink Alarm Codes Cooling Troubleshooting Digital Scroll Controller DSC Troubleshooting Cooling Service AnalysisFlash Code 4 ⎯ Locked Rotor DSC Red LED Flash CodesEconomizer Troubleshooting Economizer Service AnalysisHeating Troubleshooting Variable Frequency Drive VFD TroubleshootingPhase Loss Protection IGC Service Analysis Logic IGC Board LED Alarm Codes Electric Heat Service AnalysisLED FlashThermistor Troubleshooting Air TemperaturesRefrigerant Temperatures Thermistor/Temperature Sensor CheckTransducer Troubleshooting Forcing Inputs and OutputsSensor Trim Temp Voltage Resistance Drop Temp Voltage Resistance Temp F Drop Degree C Degree F Major System Components GeneralPressure Voltage Psig48PD Control Wiring Schematic 50PD Control Wiring Schematic 48/50PD Power Wiring Schematic and Legend Typical Unit Component Arrangement Setting Main Base Board MBBMBB Connections FIL.SCenter of the board. Do not change this setting Economizer Control Board ECBECB Connections RM.OCModulation Board AUX1 CommunicationDigital Scroll Control Board DSC CMP.AVariable Frequency Drive VFD Variable Frequency Drive VFDIntegrated Gas Control IGC Board Integrated Gas Control IGC BoardLow Voltage Terminal Strip TB1Accessory Navigatort Display Field-Installed AccessoriesScrolling Marquee Display Carrier Comfort Network Ccnr InterfaceSpace Temperature Sensor T-58 Space Temperature Sensor AveragingSpace Temperature Sensor Averaging Service Cleaning Coil Maintenance and Cleaning RecommendationPeriodic Clean Water Rinse Routine Cleaning of Round-Tube Coil SurfacesCondensate Drain Pan FiltersOutdoor-Air Inlet Screens Main Burner 48PDEvaporator Fan Service and Replacement Evaporator Fan Performance AdjustmentLubrication Evaporator Fan Belt Tension Adjustment Variable Frequency Drive VFD ReplacementCondenser-Fan Adjustment Economizer Operation During Power Failure Verify Sensor PerformanceEvacuation Refrigerant ChargeGas Valve Adjustment PuronR RefrigerantAltitude Compensation 48PG03-07 Elevation Natural GAS PropaneHigh Altitude Main BurnersFilter Drier Protective DevicesReplacement Parts Diagnostic LEDsRelief Devices Compressor Sound ShieldMode RUN Status Appendix a Local Display and CCN TablesStrt Alrmdisp = CCNOnly Generic = CCNMode Service Test Mode TemperaturesMode Pressures Mode SET Points Mode InputsMode Outputs OutputsMode Configuration HT.TY HTRMRT.H MOT.HIA.CF IA.FNII.CF II.FNTrim SPT.CSPT.T SAT.CMode Time Clock CCN only TablesMode Operating Modes OK.HT ACT.HEN.LO AQ.DVMode Alarms Expansion Range Default CCN CCN Point CCN WriteExpansion Range Units TABLE/SUB---TABLE StatusAppendix B VFD Information VFD Terminal DesignationsVFD Configurations Standard Display Mode VFD OperationVFD Modes Start Up with AssistantParameters Mode Start-Up Assistant ModeChanged Parameters Mode Drive Parameter Backup ModeVFD Diagnostics VFD Maintenance Correcting AlarmsHistory Heat SinkFault Codes 101---105201---206 1000 10011002 1003Alarm Codes Maintenance IntervalsMaintenance Interval Main Fan Replacement Control Panel CleaningBattery Replacement Appendix C START-UP Data Fan Performance 48PDD05 Vertical UnitsFan Performance 48PDE05 Vertical Units AirflowFan Performance 48PDD06 Vertical Units Fan Performance 48PDE06 Vertical Units Rpm Bhp 1500Available External Static Pressure in. wg CFMFan Performance 48PDD05 Horizontal Units Fan Performance 48PDE05 Horizontal UnitsBhp Rpm Fan Performance 48PDD06 Horizontal Units 1026 1086 1144 1199 1253Fan Performance 48PDE06 Horizontal Units Fan Performance 50PD05 Vertical Units Fan Performance 50PD06 Vertical UnitsFan Performance 50PD05 Horizontal Units Bhp Rpm 1500General Notes for FAN Performance Data Tables Appendix D Additional START-UP Data Control SET Point and Configuration LOG Indicate Unit Settings belowCCN Point Entry 103 104 Unit START-UP Checklist PRE-START-UP106

48/50PD05 specifications

The Carrier 48/50PD05 is a remarkable addition to Carrier's lineup of rooftop units, offering advanced cooling and heating solutions for commercial applications. Designed for medium-sized buildings, this unit is well-suited for both new installations and as a replacement for older systems, thanks to its versatile features and efficient performance.

One of the standout features of the 48/50PD05 is its energy efficiency. It incorporates state-of-the-art technology to achieve high Seasonal Energy Efficiency Ratios (SEER) and EER ratings, reducing operational costs while delivering superior comfort. The unit is also compliant with the latest energy regulations, making it an environmentally friendly choice for building owners concerned about sustainability.

The 48/50PD05 is equipped with a highly efficient scroll compressor, which not only enhances performance but also contributes to quiet operation. This is a significant advantage in commercial spaces where noise levels need to be kept in check for comfort and productivity. Additionally, the unit includes advanced airflow design, ensuring even distribution of conditioned air throughout the space.

Technologically, the Carrier 48/50PD05 features Carrier's Infinity Control system, which allows for precise control of indoor climate. This intelligent control mechanism can be integrated with smart building management systems, enabling users to monitor and manage energy use effectively. Wi-Fi connectivity is also available, providing remote access for real-time adjustments and diagnostics.

Durability is another characteristic of the 48/50PD05. Constructed with high-quality materials, the unit withstands various environmental conditions, ensuring longevity and reliability. Moreover, the modular design facilitates easy maintenance, making service procedures efficient and cost-effective.

In addition to cooling, the Carrier 48/50PD05 offers heating capabilities, often utilizing gas or electric heating options that can be tailored to the specific needs of a building. The unit can also be equipped with integrated economizers, allowing for free cooling during suitable outdoor conditions, further enhancing energy savings.

Overall, the Carrier 48/50PD05 stands out as a high-performance HVAC solution that combines efficiency, technology, and durability. It provides building owners with a versatile tool to ensure comfort while minimizing their environmental footprint. With a strong emphasis on energy savings and advanced control features, this rooftop unit is a smart investment for any commercial property.
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