Carrier 39L specifications

Page 94

INDOOR-AIR QUALITY (IAQ) Ð This function main- tains the correct occupied ventilation rate using CO2 as an indicator of occupancy level or controls the levels of volatile organic compounds (VOCs) or other indoor air pollutants by modulating the mixed air dampers. Varying quantities of out- door air are admitted during the Occupied period to main- tain the ventilation rate at its set point or pollutants at or below the con®gured set points of the air-quality (AQ) sen- sors. See Fig. 76.

CO2 sensors are available from the factory as options for ®eld installation. VOC or other types of sensors can be ®eld- supplied and installed. Sensors used with the IAQ feature can be con®gured several different ways:

·One sensor can be installed in either the space or return air stream to continuously monitor a single gas.

·Two sensors (monitoring the same gas) can be installed in different locations to provide separate inputs. For ex- ample, one sensor can be located in an occupied space and another in the return air duct, or each sensor can be in- stalled in a different occupied space.

·Two sensors (typically VOC sensors monitoring the same gas) can be installed inside and outside the occupied space for comparative measurements. The control is con®gured to modify the damper position based on the value of the sensor in the occupied space, but before admitting outside air, the control performs a differential check to determine if the value of the sensor measuring the outside air is higher. If the outside sensor has a higher value, the damper does not change position.

Systems with One AQ Sensor Ð During the unoccupied period, the minimum damper position maintained by the IAQ control is 0. During the occupied period, the control

reads the AQ1 sensor input and compares it to the con®g- ured set point. The control then calculates the minimum damper position to maintain the set point. If no other control is at- tempting to adjust the dampers to a more fully open position than the IAQ control, the damper is adjusted to the position determined by the IAQ control. Otherwise, the damper is positioned by the superseding control routine or at its con- ®gured minimum position.

Systems with Two AQ Sensors (Separate Readings) Ð The preceding sequence for the AQ1 sensor also applies to the AQ2 sensor, but the damper position is determined by either the AQ1 or the AQ2 sensor according to which sensor value demands the more fully open damper position.

Systems with Two AQ Sensors (Differential Check) Ð If dif- ferential sensing is con®gured for two VOC sensors, the con- trol reads the AQ2 (outside air) sensor to determine if its value is greater or less than that of the AQ1 (indoor air) sen- sor. If the AQ2 value is greater than the value of the AQ1 sensor, the mixed-air damper position is set to 0. If the AQ2 value is less than the AQ1 value (by at least 1% of the con- ®gured minimum sensor value), the control uses the AQ1 value to modulate the dampers and maintain the AQ set point.

IAQ System Protection Ð To protect the system against coil freeze-up in cold climates or high heat and humidity in warm climates, the system provides several user-selectable fea- tures to override or modify the IAQ functions. An adjustable maximum position for the mixed-air damper is provided for each AQ sensor, and a selection is available to maintain the minimum mixed-air temperature at approximately 45 F. Space temperature and humidity protection can temporarily sus- pend IAQ functions until the temperature and humidity con- ditions return to the desired set points. On VAV systems dur- ing cooling, the IAQ function can be limited to maintain the required supply-air temperature.

94

Page 93 Page 95
Image 94
Page 93 Page 95
Contents Installation, Operation, Start-Up Instructions ContentsInstallation Safety ConsiderationsGeneral 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 ThermostatFunction USE Keys Local Interface Device Key UsageOperative 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 2 Ð Reading Current Operating Modes Example 1 Ð Reading Alarm CodesKeyboard 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 8 Ð Conguration of Measurements Example 7 Ð Reading and Changing Factory CongurationsExample 9 Ð User Congurations Example 10 Ð Conguration of Heating Coil Example 11 Ð Conguration of Space Temperature ResetExample 12 Ð Conguration of Loadshed Example 15 Ð Conguration of Analog Temperature Control Example 14 Ð Conguration of Alarm LimitsExample 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 22 Ð Setting Daylight Savings Time Example 21 Ð Setting of Time and DateExample 20 Ð Reading and Changing System Set Points Example 23 Ð Setting of Holidays Schedule I Sample Time ScheduleKeyboard Display Comment Entry Response Programming Period Example 24 Ð Using the Schedule FunctionPeriod 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/FORCEDExample 26 Ð Heating Coil Valve Test Way Normally Open Control Module TroubleshootingExit Test Dsio Unit Troubleshooting Problem Possible Cause Corrective ActionHCV, CCV, IGV OAC malfunctioning IAQ featuresMalfunctioning 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.
Top Page Image Contents