Carrier 39L specifications 102

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SPACE TEMPERATURE RESET Ð The space tempera- ture reset is used to reset the supply-air temperature set point upward as the space temperature falls below the Occupied Cooling set point. As space temperature falls below the cool- ing set point, the space temperature is reset upward as a func- tion of the reset ratio. The reset ratio is the degrees of change in supply-air temperature per degree of space temperature change. A reset limit speci®es the maximum number of de- grees the supply-air temperature may be raised. Both the re- set ratio and the reset limits are user adjustable.

When the fan is ON, and the system is in the Occupied mode, the control reads the space temperature sensor and computes the reset value. If the reset value is greater than the reset limit, the control uses the reset limit as the reset value. The modi®ed supply air temperature set point is de- termined by adding the reset value to the con®gured supply air temperature set point. This value is then used by the cool- ing coil algorithm.

TWO-STEP DEMAND LIMITING (Available on Units Connected to the Carrier Comfort Network Only) Ð If the Demand Limit option is enabled, the control receives and accepts redline alerts and loadshed commands from the Net- work Loadshed option. See the CCN Loadshed manual for additional information.

When a redline alert is received, the system limits the maxi- mum volume (percent of fully open IGVs) per the user- de®ned demand limit no. 1 set point.

When a loadshed command is received, the maximum vol- ume is limited per the user-de®ned demand limit no. 2 set point.

The maximum loadshed timer prevents the system from remaining in Loadshed, if the control loses communications with the Loadshed option. If the timer expires before the

loadshed command is cleared by the Loadshed option, the control clears the loadshed command itself and returns to normal control. The loadshed timer is factory set at 60 minutes.

MIXED-AIR DAMPER CONTROL Ð The mixed-air damper control modulates the outside-air, return-air, and exhaust-air dampers. When outside-air conditions are unsuitable for at- mospheric cooling, the dampers are held at the minimum ad- justable outside-air position. The mixed-air dampers are modulated to maintain a mixed-air temperature equal to supply- air temperature set point minus 3° F. The dampers can also be modulated to maintain a user-con®gured mixed-air tem- perature set point.

If the supply fan is OFF, the mixed-air dampers are held closed to outside air and held open to return air. If the supply fan is ON, and the system is not in the HEAT mode, the system determines if outside-air conditions are suitable for atmospheric cooling. The outside-air temperature is com- pared to the space temperature. If the outside-air tempera- ture is less than the space temperature, the system performs either an enthalpy check using an outside-air enthalpy switch or a differential enthalpy check.

If the outside conditions are suitable, the control uses the mixed-air sensor to maintain the discharge temperature (when- ever the mixed-air sensor option is installed). If the sensor is not provided or fails, the control uses the supply-air sen- sor to modulate the dampers and achieve the set point.

When the outside temperature is less than 40 F, the mixed- air damper opening rate is limited to 5% per minute to pro- tect against nuisance low temperature thermostat tripping and coil freeze-up. Rate limiting is off when the dampers are closed.

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Contents Installation, Operation, Start-Up Instructions ContentsSafety Considerations InstallationGeneral Page PIC ABXIGV VAVMXB Ð Mixing Box Direct ExpansionFMB Ð Filter Mixing Box Normally ClosedControl Box for Remote Mounting AQ1 AFSAotc AQ2PIC Section Control Box Component Arrangements, 39L PIC Section Control Box Component Arrangement, 39NX Sizes PIC Section Control Box Component Arrangement, 39NX Sizes Page Input and Output Points AddressUnit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39L Sizes 03-35 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 07-21 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Unit Wiring Schematic, 39NX Sizes 26-92 115 v, Typical Page Page Page Page Page Page Junction Box Connections for Optional Remote Control Box Terminal SignalValve Assembly Typical Hot Water Valve Wiring Chilled Water Valve Wiring Duct Static Pressure ProbeNema Ð National Electrical Manufacturers Association Resistance Temperature OhmsMixed-Air Temperature Sensor HH79NZ021 Installation Enthalpy Control Settings Supply/Return Air Temperature Sensor HH79NZ019COI L Comno Wall-Mounted Relative Humidity Sensor Fig Duct-Mounted Relative Humidity Sensor Locations Air¯ow Switch P/N HK06WC030 CGCDXSEN003A00 CO2 Sensor AccessoriesCGCDXSEN002A00 CGCDXGAS001A00Air Quality CO2 Sensor Wall Mount Version Shown CO2 Concentration PPMOAC Pressure Transducers Processor Recommended Sensor Device WiringManufacturer Part Number Sensor Module PIN noField Wiring of Sensors Recommended Actuators StrokeField-Supplied Mixing Box Actuator Signal Wiring Evacuation Supply Fan Contactor HAND/OFF/AUTO Switch Tran Ð TransformerHigh-Pressure Switch Remove Jumper Fire Shut Down Terminal BlockPres Single-Pole, Double-Throw Spdt Relay Wiring of Device Under Discrete Output Temperature Control Wiring of Two-Stage Humidication Control Relays Duct Mounted Relative Humidity Transmitter Wiring Air Quality and Oavp Sensor Wiring Wiring of Return Fan Volume Control With IGVs Pulse-Type Meter Wiring Control SystemCCN Communication Wiring Relay Module AHUAir Handling Unit Outdoor Air ThermostatLocal Interface Device Key Usage Function USE KeysOperative USE Keys SUB Function Number Status History Schedule Service Set Point TestFunctions and Subfunctions OavpControl Operation Operation Keyboard Display Description EntryKeyboard Directory StatusInputs VAV Direct Expansion Oavp Ð Outside Air Velocity Pressure AIRQUAL1 SET Point Quick Test History Example 1 Ð Reading Alarm Codes Example 2 Ð Reading Current Operating ModesKeyboard Display Comments Entry Response Force States AlarmsDisplay Codes Display DescriptionExample 4 Ð Forcing An Output Value State of Items ControlledExample 3 Ð Forcing An Input Value Relay StagesKeyboard Display Comments Entry Response To LOG on Example 5 Ð Using Quick TestExample 6 Ð Logging On and Logging Off Service Function To LOG OFFService Conguration Ranges and Defaults Analog Output Temperature Control Example 7 Ð Reading and Changing Factory Congurations Example 8 Ð Conguration of MeasurementsExample 9 Ð User Congurations Example 11 Ð Conguration of Space Temperature Reset Example 10 Ð Conguration of Heating CoilExample 12 Ð Conguration of Loadshed Example 14 Ð Conguration of Alarm Limits Example 15 Ð Conguration of Analog Temperature ControlExample 13 Ð Conguration of Fan Tracking Example 18 Ð Service/Maintenance Alarm Conguration Example 16 Ð Conguration of Discrete Temperature ControlExample 17 Ð Service History Conguration Set Point Ranges and DefaultsExample 21 Ð Setting of Time and Date Example 22 Ð Setting Daylight Savings TimeExample 20 Ð Reading and Changing System Set Points Example 23 Ð Setting of Holidays Schedule I Sample Time ScheduleExample 24 Ð Using the Schedule Function Keyboard Display Comment Entry Response Programming PeriodPeriod 1 Dene schedule period For this example, Period 6 is used for holiday only Constant Volume and Variable Air Volume Units Control Operating SequencePage Page IAQ MAT Ð Mixed-Air TemperatureOAT Ð Outdoor-Air Temperature Indoor-Air QualityConstant Volume Units Only CCV Ð Cooling Coil Valve RAT Ð Return-AirDX Submaster Gain Control Operation Variable Air Volume Units Only Page Constant Outside Air Outside AirOAC Oavp Ð Outside Air Velocity Pressure102 START-UP Initial CheckTest of Input Signals Keyboard Display COMMENTS/ACTION Entry ResponseKeyboard Display COMMENTS/ACTION Entry Response FSD NRM FollowingTest of Output Signals For Variable Air Volume UnitsTest of Output Options Using Option Module Electric Heater TestDigital DC Volt Meter vs DC Milliamp Meter Control Loop CheckoutDirect Expansion DX Cooling Test DC Milliamps DC VoltageValve Troubleshooting Recommended Gain Starting ValvesIGV % Typical LinkagesExample 25 Ð Forcing An Output HCV 10/FORCEDControl Module Troubleshooting Example 26 Ð Heating Coil Valve Test Way Normally OpenExit Test Dsio Unit Troubleshooting Problem Possible Cause Corrective ActionHCV, CCV, IGV IAQ features OAC malfunctioningMalfunctioning Metric Conversion Chart

39L specifications

The Carrier 39L is a cutting-edge air conditioning unit designed for both residential and commercial applications, providing exceptional cooling and heating performance. Equipped with advanced technologies, this system ensures optimal climate control while maintaining energy efficiency.

One of the standout features of the Carrier 39L is its inverter technology. This innovation allows the system to adjust its compressor speed based on the ambient temperature, which results in a significant reduction in energy consumption. By operating at varying capacities rather than a fixed output, the 39L can maintain a consistent temperature, enhancing comfort while lowering electricity bills.

The Carrier 39L also includes a high-efficiency air filtration system, designed to capture dust, allergens, and other airborne particles. This not only improves indoor air quality but also promotes a healthier living environment. The filtration system is complemented by anti-bacterial treatment, ensuring that the air circulated within your space is both clean and refreshing.

In terms of design, the Carrier 39L boasts a sleek and compact form factor, making it easy to integrate into various settings, from homes to offices. Its quiet operation is another notable feature, as it minimizes noise levels, allowing occupants to enjoy a serene atmosphere without disruptive sound.

Further enhancing convenience, the Carrier 39L comes equipped with smart connectivity options. Users can control the unit remotely via a smartphone app, making it easy to adjust settings, program schedules, and monitor energy usage from anywhere. This feature not only improves user experience but also supports energy-saving practices.

Durability is also a key characteristic of the Carrier 39L. Constructed with high-quality materials and coated with corrosion-resistant treatments, the unit is built to withstand various environmental conditions. This ensures long-lasting performance and reduces the need for frequent maintenance.

Overall, the Carrier 39L is a versatile, efficient, and user-friendly air conditioning solution. Its blend of advanced technologies, energy-saving capabilities, and robust design makes it an ideal choice for those seeking reliable climate control in their spaces. Whether for residential comfort or commercial necessity, the Carrier 39L stands out as a leader in modern air conditioning.
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