Carrier 39L specifications Mixed-Air Temperature Sensor HH79NZ021 Installation

Page 43

NOTE: This sensor uses a resistance temperature device (RTD) element. Polarity is not a consideration.

When space does not allow working inside the duct, mount as follows (Fig. 22):

1.Open a duct penetration on the opposite side of the sen- sor junction box.

2.Wrap the element around a 3¤4-in. PVC pipe, cut holes near the center of the duct on both sides and feed the pipe with sensor element through the hole.

3.Secure the seal around the PVC pipe.

NOTE: If local codes do not permit the use of PVC, use EMT instead.

Refer to Field Wiring Connections section, page 52 for wiring instructions and details. See Table 5 for RTD resis- tance vs temperature values.

Table 5 Ð RTD Resistance vs Temperature Values

for Mixed-Air Temperature Sensor

RESISTANCE

TEMP

RESISTANCE

TEMP

RESISTANCE

TEMP

(Ohms)

(F)

(Ohms)

(F)

(Ohms)

(F)

693

−40

940

50

1223

140

719

−30

970

60

1257

150

745

−20

1000

70

1290

160

772

−10

1031

80

1325

170

799

0

1062

90

1360

180

827

10

1093

100

1395

190

854

20

1125

110

1430

200

883

30

1157

120

Ð

Ð

912

40

1190

130

Ð

Ð

 

 

 

 

 

 

Enthalpy Switch (Fig. 23) Ð The enthalpy switch and mounting template are located in a box shipped inside the fan section.

The enthalpy switch is normally mounted in a horizontal position with the sensing element exposed to freely circu- lating outdoor air.

DO NOT install enthalpy switch in locations where ex- cessive moisture, corrosive fumes, and/or vibration are present.

Fig. 21 Ð Mixed-Air Temperature Sensor

(P/N HH79NZ021) Installation

Fig. 22 Ð Alternate Mixed-Air Temperature

Sensor Installation

Mount the switch as follows:

1.Position mounting template on duct. Remove adhesive backing and press template onto outside air duct.

2.Drill four 1¤8-in. mounting holes as indicated on the template.

3.Cut out center portion of duct as outlined on template.

4.Mount controller to duct using screws provided.

If no outside air duct is present, mount the enthalpy switch on a ®eld-supplied and installed plate upstream of the out- side air damper.

Connect the red and blue wires of the enthalpy switch to the PIC control box terminals. Refer to Field Wiring Connections section, page 52 for further details.

CONTROL RANGES Ð See Fig. 24 for control settings and intermediate settings.

MOUNTING HOLES

Y

E

L

R

ED D

B

C

L

 

U

 

B

A

Fig. 23 Ð Enthalpy Switch (P/N HH57AC076)

43

Page 42 Page 44
Image 43
Page 42 Page 44
Contents Contents Installation, Operation, Start-Up InstructionsInstallation Safety ConsiderationsGeneral Page VAV ABXIGV PICNormally Closed Direct ExpansionFMB Ð Filter Mixing Box MXB Ð Mixing BoxControl Box for Remote Mounting AQ2 AFSAotc AQ1PIC 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 CGCDXGAS001A00 CO2 Sensor AccessoriesCGCDXSEN002A00 CGCDXSEN003A00CO2 Concentration PPM Air Quality CO2 Sensor Wall Mount Version ShownOAC Pressure Transducers Sensor Module PIN no Recommended Sensor Device WiringManufacturer Part Number ProcessorField Wiring of Sensors Stroke Recommended ActuatorsField-Supplied Mixing Box Actuator Signal Wiring Fire Shut Down Terminal Block HAND/OFF/AUTO Switch Tran Ð TransformerHigh-Pressure Switch Remove Jumper Evacuation Supply Fan ContactorPres 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 Outdoor Air Thermostat AHUAir Handling Unit Relay ModuleFunction USE Keys Local Interface Device Key UsageOperative USE Keys Oavp Status History Schedule Service Set Point TestFunctions and Subfunctions SUB Function NumberOperation Keyboard Display Description Entry Control OperationStatus Keyboard DirectoryInputs 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 Display Description AlarmsDisplay Codes Force StatesRelay Stages State of Items ControlledExample 3 Ð Forcing An Input Value Example 4 Ð Forcing An Output ValueTo LOG OFF Example 5 Ð Using Quick TestExample 6 Ð Logging On and Logging Off Service Function Keyboard Display Comments Entry Response To LOG onService 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 Set Point Ranges and Defaults Example 16 Ð Conguration of Discrete Temperature ControlExample 17 Ð Service History Conguration Example 18 Ð Service/Maintenance Alarm CongurationExample 22 Ð Setting Daylight Savings Time Example 21 Ð Setting of Time and DateExample 20 Ð Reading and Changing System Set Points Schedule I Sample Time Schedule Example 23 Ð Setting of HolidaysKeyboard 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 Control Operating Sequence Constant Volume and Variable Air Volume UnitsPage Page Indoor-Air Quality MAT Ð Mixed-Air TemperatureOAT Ð Outdoor-Air Temperature IAQConstant Volume Units Only RAT Ð Return-Air CCV Ð Cooling Coil ValveDX Submaster Gain Control Operation Variable Air Volume Units Only Page Oavp Ð Outside Air Velocity Pressure Outside AirOAC Constant Outside Air102 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 ModuleDC Milliamps DC Voltage Control Loop CheckoutDirect Expansion DX Cooling Test Digital DC Volt Meter vs DC Milliamp MeterRecommended Gain Starting Valves Valve TroubleshootingHCV 10/FORCED Typical LinkagesExample 25 Ð Forcing An Output IGV %Example 26 Ð Heating Coil Valve Test Way Normally Open Control Module TroubleshootingExit Test Dsio Problem Possible Cause Corrective Action Unit TroubleshootingHCV, 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