Carrier 39L specifications Resistance Temperature, Ohms

Page 42

Outdoor-Air Temperature Sensor (Fig. 19) Ð

The outdoor-air temperature (OAT) sensor is shipped inside the fan section. The OAT sensor continuously monitors the temperature of the air outside the building. The integral shield prevents ice formation on the sensor conductors. A ®eld- supplied conduit junction box is required for installation. See Fig. 20.

Position the OAT sensor so that it accurately senses only the outdoor-air temperature. The sensor must be located up- stream from outside air dampers and located where it is un- affected by interior and duct temperatures. During the unoc- cupied (fan off) period the sensor's location should have a minimal effect on its readings.

Do not mount the sensor in direct sunlight. Inaccurate read- ings may result. It may be necessary to ®eld-fabricate a shield to protect the sensor from direct sunlight.

Do not mount the sensor near the exhaust from air- handling units or compressors, or near leakage drafts of in- door air, or near shrubbery or trees. Inaccurate readings may result. Do not mount under direct water runoff. Water may freeze around the sensor in winter and produce a false reading.

If sensor wire is shielded, strip back the sensor shield and tape it to prevent contact.

Position the sensor with the slotted end pointed downward.

The ®eld-supplied junction box housing must be threaded to screw onto a male 1¤2-in. NPT electrical metal tubing (EMT) conduit adaptor. The assembled box and sensor must be mounted parallel to the building wall. See Fig. 20. The sensor can also be installed on a roof or other location.

For distances up to 500 ft, use 2-conductor 20 AWG cable to connect the sensor to the PIC terminals. Refer to the Field Wiring Connections section, page 52 for further wiring in- structions. See Table 4 for thermistor resistance according to temperature value.

Table 4 Ð Thermistor Resistance vs

Temperature Values for Outdoor-Air

Temperature Sensor

RESISTANCE

TEMPERATURE

RESISTANCE

TEMPERATURE

(Ohms)

(F)

(Ohms)

(F)

168,250

−40

5,000.0

77

121,350

−31

4,028.5

86

88,500

−22

3,265.0

95

65,200

−13

2,663.3

104

48,535

−4

2,185.0

113

36,476

5

1,801.5

122

27,665

14

1,493.0

131

21,165

23

1,244.0

140

16,325

32

1,041.5

149

12,695

41

876.0

158

9,950

50

739.5

167

6,245

68

627.5

176

Fig. 19 Ð Outdoor-Air Temperature Sensor

(P/N HH79NZ023)

Fig. 20 Ð Outdoor-Air Temperature

Sensor Installation

Mixed-Air Temperature Sensor Ð The optional mixed-air temperature sensor (MAT) is factory wired and installed on all units with a factory-installed mixing box (MXB), ®lter mixing box (FMB), or air blender (AMX). On units without an AMX, MXB, or FMB, the optional MAT is pack- aged and shipped inside the fan section for ®eld installation.

The ®eld-installed MAT should be mounted downstream of the return air duct and ®lters, but as close as possible to the 39L or 39NX unit.

AVOID repeated bending of copper tubing, as this will place stress on the sensor element and lead to eventual breakage.

DO NOT fold or crimp copper tubing.

USE CARE in forming and securing the element.

STRIP back and tape the shield in order to prevent contact.

Mount ®eld-installed MAT as follows (Fig. 21):

1.Punch a 1-in. diameter hole in the duct and feed the sen- sor element through the hole. Mount the utility box on the outside of the duct.

2.Bend the copper tubing surrounding the sensor element to conform to the area of the duct. Do not bend it to less than 21¤2 in. diameter on any turn. The sensor element should be evenly distributed over the entire cross sec- tional area of the duct.

Existing support structures may be used for the sensor element, as long as there is no metal-to-metal contact with the copper tubing, and the mounting does not interfere with other functions.

3.Use a ®eld-supplied plastic spacer, clamp, and screws to secure the sensor in the airstream. See Detail A, Fig. 21.

4.Using 2-conductor 20 AWG plenum-rated cable, connect the sensor to the PIC control box terminals.

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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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