Carrier 39L specifications

Page 93

DISCRETE OUTPUT/ANALOG INPUT CONTROL Ð The discrete output is controlled as a function of a temperature sensor connected to the 39L or 39NX unit. (Applicable sen- sors are: space temperature sensor, outside-air temperature sensor, mixed-air temperature sensor, supply-air tempera- ture sensor, and return-air temperature sensor.) The discrete output is turned ON/OFF as required to maintain the user con®gured set point.

The controlling sensor is identi®ed and its value is read. The control determines which user-con®gurable control logic (normal or reverse) is required.

The control compares the sensor value to the con®gured set point.

If normal logic is used, the discrete output is turned ON when the sensor value is equal to or greater than the set point. This output is turned OFF when the sensor value is less than the set point decreased by a user con®gurable hysteresis.

If reverse logic is used, the discrete output is turned ON whenever the sensor value is less than the set point. This output is turned OFF when the sensor value is greater than the set point increased by a user con®gurable hysteresis.

DISCRETE OUTPUT, TIMECLOCK CONTROL Ð This control sequence turns ON an output channel when the cur- rent time of day is greater than or equal to the Occupied time and less than the next Unoccupied time. This discrete output is OFF at all other times. The output can be used for lighting control, pump control, or to control other devices which have to be ON during the Occupied period and OFF during the Unoccupied period. This control sequence operates under its own time schedule (Schedule II).

Using the local interface device or building supervisor, the output may be overridden to extend the occupied period be- tween 1 and 4 hours.

The control determines the output that is under time- clock control. The current time of day is compared to the Occupied time and to the next Unoccupied time. If the current time of day is equal to or within the Occupied time period, the discrete output is turned ON. If the current time of day is equal to or within the Unoccupied time period, the discrete output is turned OFF.

HUMIDITY (ANALOG OUTPUT) CONTROL Ð The hu- midity analog output control adjusts the steam valve of the steam grid humidi®er. The valve is modulated to maintain the desired space or desired return-air humidity set point, depending on whether a wall-mounted or duct-mounted hu- midity sensor is used. A duct high humidity switch is also monitored and provides a user adjustable high limit safety.

If the supply fan is OFF, the steam valve is held closed.

If the supply fan is ON, and the unit is in the Unoccupied mode, the valve is held closed.

If the supply fan is ON and the unit is in the Occupied mode, the system determines the status of the duct high hu- midity switch. If the duct humidity is above the switch set point, the valve is held closed. If the duct humidity is less than the switch set point, the control reads the humidity sen- sor, compares the value to the set point and modulates the output as required to satisfy conditions.

HUMIDITY (DISCRETE OUTPUT) CONTROL Ð The hu- midity control sequentially adjusts a 2-stage humidi®er. The humidi®er is controlled to maintain a desired space or return- air humidity, depending on whether a wall-mounted or duct- mounted humidity transmitter is used.

The ®rst stage of humidi®cation energizes the humidi®er spray pump (if applicable) along with the ®rst stage of the humidi®er. The second stage of humidi®cation energizes the second stage of the humidi®er.

A duct high humidity switch is also monitored and pro- vides a user adjustable duct high humidity limit safety.

If the fan status is ON and the unit is in the Occupied mode, the control reads the space or return-air humidity sen- sor. If the humidity is 2% less than the humidity set point, the ®rst stage is turned ON.

If the humidity is 5% less than the humidity set point, both stages are turned ON.

As the humidity increases, the stages are turned OFF as follows: When the humidity is within 2% of the set point, the second stage of the humidi®er is turned OFF. When the humidity is greater than or equal to the set point, both stages are turned OFF. If the high humidity switch is tripped, all stages of the humidi®er are turned OFF.

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Contents Contents Installation, Operation, Start-Up InstructionsSafety Considerations InstallationGeneral Page IGV ABXPIC VAVFMB Ð Filter Mixing Box Direct ExpansionMXB Ð Mixing Box Normally ClosedControl Box for Remote Mounting Aotc AFSAQ1 AQ2PIC Section Control Box Component Arrangements, 39L PIC Section Control Box Component Arrangement, 39NX Sizes PIC Section Control Box Component Arrangement, 39NX Sizes Page Address Input and Output PointsUnit 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 Terminal Signal Junction Box Connections for Optional Remote Control BoxValve Assembly Typical Hot Water Valve Wiring Duct Static Pressure Probe Chilled Water Valve WiringNema Ð National Electrical Manufacturers Association Ohms Resistance TemperatureMixed-Air Temperature Sensor HH79NZ021 Installation Supply/Return Air Temperature Sensor HH79NZ019 Enthalpy Control SettingsCOI L Comno Wall-Mounted Relative Humidity Sensor Fig Duct-Mounted Relative Humidity Sensor Locations Air¯ow Switch P/N HK06WC030 CGCDXSEN002A00 CO2 Sensor AccessoriesCGCDXSEN003A00 CGCDXGAS001A00CO2 Concentration PPM Air Quality CO2 Sensor Wall Mount Version ShownOAC Pressure Transducers Manufacturer Part Number Recommended Sensor Device WiringProcessor Sensor Module PIN noField Wiring of Sensors Stroke Recommended ActuatorsField-Supplied Mixing Box Actuator Signal Wiring High-Pressure Switch Remove Jumper HAND/OFF/AUTO Switch Tran Ð TransformerEvacuation Supply Fan Contactor 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 Control System Pulse-Type Meter WiringCCN Communication Wiring Air Handling Unit AHURelay Module Outdoor Air ThermostatLocal Interface Device Key Usage Function USE KeysOperative USE Keys Functions and Subfunctions Status History Schedule Service Set Point TestSUB Function Number OavpOperation Keyboard Display Description Entry Control OperationStatus Keyboard DirectoryInputs 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 Display Codes AlarmsForce States Display DescriptionExample 3 Ð Forcing An Input Value State of Items ControlledExample 4 Ð Forcing An Output Value Relay StagesExample 6 Ð Logging On and Logging Off Service Function Example 5 Ð Using Quick TestKeyboard Display Comments Entry Response To LOG on 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 17 Ð Service History Conguration Example 16 Ð Conguration of Discrete Temperature ControlExample 18 Ð Service/Maintenance Alarm 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 Schedule I Sample Time Schedule Example 23 Ð Setting of HolidaysExample 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 Control Operating Sequence Constant Volume and Variable Air Volume UnitsPage Page OAT Ð Outdoor-Air Temperature MAT Ð Mixed-Air TemperatureIAQ Indoor-Air QualityConstant Volume Units Only RAT Ð Return-Air CCV Ð Cooling Coil ValveDX Submaster Gain Control Operation Variable Air Volume Units Only Page OAC Outside AirConstant Outside Air Oavp Ð Outside Air Velocity Pressure102 Initial Check START-UPKeyboard Display COMMENTS/ACTION Entry Response Test of Input SignalsFollowing Keyboard Display COMMENTS/ACTION Entry Response FSD NRMFor Variable Air Volume Units Test of Output SignalsElectric Heater Test Test of Output Options Using Option ModuleDirect Expansion DX Cooling Test Control Loop CheckoutDigital DC Volt Meter vs DC Milliamp Meter DC Milliamps DC VoltageRecommended Gain Starting Valves Valve TroubleshootingExample 25 Ð Forcing An Output Typical LinkagesIGV % HCV 10/FORCEDControl Module Troubleshooting Example 26 Ð Heating Coil Valve Test Way Normally OpenExit Test Dsio Problem Possible Cause Corrective Action Unit TroubleshootingHCV, 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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