Carrier 39L specifications Constant Volume Units Only

Page 96

SMOKE CONTROL Ð When the 39L or 39NX unit is equipped with an optional smoke control and a ®re system is installed, 4 modes are provided to control smoke within areas serviced by the air-handling unit. Each mode must be energized individually from the approved building ®re alarm system, and the corresponding alarm is then generated at the local interface device or Building Supervisor.

The system must include a separate return fan and an ex- haust air damper with a 4 to 20 mA actuator.

The building ®re alarm system must provide 4 normally- open dry contact closures and a double-pole, double-throw (DPDT) relay (24 vac coil, contacts rated 10 amps at 240 vac) for the Fire Shutdown mode.

Fire Shutdown Mode Ð The ®re alarm system must provide a normally-open dry contact closure which, when activated, energizes the Fire Shutdown mode.

When the Fire Shutdown mode is energized, the supply and return fans stop, the outside and exhaust air dampers close, and the return-air dampers open.

This mode remains in effect as long as the input signal is maintained at the ®re system panel. An alarm is generated from this input and sent to the Building Supervisor. In order for this mode to be initiated, the input signal must be main- tained for no less than 2 seconds.

Evacuation Mode Ð The building ®re alarm system must pro- vide a normally-open dry contact closure which, when ac- tivated, energizes the Evacuation mode. When the Evacuation mode is energized, the supply fan shuts down, the return fan starts, the outside-air and return-air dampers close, and the exhaust air dampers open.

This mode remains in effect for as long as the input signal is maintained at the ®re system panel. An alarm is generated from this input and sent to the Building Supervisor. In order for this mode to be initiated, the input signal must be main- tained for no less than 2 seconds.

Pressurization Mode Ð The building ®re alarm system must provide a normally-open dry contact closure which, when activated, energizes the Pressurization mode. When the Pressurization mode is energized, the supply fan starts, the return fan shuts down, the outside dampers open, and the exhaust and return-air dampers close.

This mode remains in effect as long as the input signal is maintained at the ®re system panel. An alarm is generated from this input and sent to the Building Supervisor. In order for this mode to be initiated, the input signal must be main- tained for no less than 2 seconds.

Smoke Purge Mode Ð The building ®re alarm system must provide a normally-open dry contact closure which, when activated, energizes the smoke purge mode.

When the smoke purge mode is energized, the supply fan starts, the return fan starts, the outside air and exhaust air dampers open and the return-air dampers close.

This mode remains in effect as long as the input signal is maintained at the ®re system panel. An alarm is generated from this input and sent to the Building Supervisor. In order for this mode to be initiated, the input signal must be main- tained for no less than 2 seconds.

ADAPTIVE OPTIMAL START Ð Optimal Start is used to heat up or cool down the space prior to occupancy. The pur- pose is to have the space temperature approach and then achieve the occupied set point by time of occupancy. The control uses outdoor-air temperature, space temperature, occupied

set point, and a `K' factor in minutes/degrees to calculate a start time offset, which is the time in minutes that the system should be started in advance of the occupied time. The con- trol monitors its results and adjusts the K factor to assure that the Occupied set point is achieved at time of occupancy.

Constant Volume Units Only

HEATING COIL CONTROL Ð The heating coil control ad- justs the steam or hot water valve. The valve is modulated to prevent the space temperature from falling below the de- sired set point.

If the supply fan is OFF, the heating valve is modulated to maintain a desired minimum duct temperature (fan off value).

If the fan is ON, the system reads the space sensor and computes the supply-air temperature required to satisfy conditions.

Once the required supply-air temperature has been calculated, it is compared to the actual supply-air tempera- ture and the heating coil valve modulates to the required position.

CHILLED WATER COIL COOLING CONTROL Ð The cooling coil control adjusts the chilled water valve. The valve is modulated to prevent space temperature from exceeding the desired set point. The valve holds its normal position if the space temperature is below the set point or the supply fan is OFF.

If the fan is ON, the control reads the humidity sensor (if supplied) and compares the value to the high humidity limit.

If the humidity is higher than the high humidity limit, the chilled water valve fully opens.

If the humidity is below the high humidity limit, the con- trol reads the space temperature sensor and computes the supply- air temperature required to satisfy conditions.

Once the required supply-air temperature has been cal- culated, it is compared to the actual supply-air temperature and the chilled water valve modulates to the position re- quired to maintain desired conditions.

See Fig. 77 for cooling coil operation ¯ow chart.

DIRECT EXPANSION COOLING CONTROL Ð The direct expansion (DX) cooling control regulates the DX cool- ing system. The DX cooling stages are energized and deen- ergized to prevent the space temperature from exceeding the desired set point. The stages remain off if the space tem- perature is below the set point or the supply fan is OFF.

If the supply fan is ON, the control reads the humidity sensor (if supplied) and compares the value to the high humidity limit. If the humidity is higher than the high hu- midity limit, the DX cooling stages are energized to main- tain a minimum supply-air temperature. If the humidity is below the limit, the control reads the space temperature sen- sor and computes the supply-air temperature required to sat- isfy conditions.

Once the required supply-air temperature has been cal- culated, it is compared to the actual supply-air temperature and the required DX cooling stages are energized to main- tain the desired conditions.

See Fig. 77 for cooling operation and Fig. 78 for DX sub- master gain operation. For more complete information, refer to the Application Data book for Product Integrated Con- trols with DX Cooling.

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Contents Installation, Operation, Start-Up Instructions ContentsSafety Considerations InstallationGeneral Page ABX IGVPIC VAVDirect Expansion FMB Ð Filter Mixing BoxMXB Ð Mixing Box Normally ClosedControl Box for Remote Mounting AFS AotcAQ1 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 CO2 Sensor Accessories CGCDXSEN002A00CGCDXSEN003A00 CGCDXGAS001A00Air Quality CO2 Sensor Wall Mount Version Shown CO2 Concentration PPMOAC Pressure Transducers Recommended Sensor Device Wiring Manufacturer Part NumberProcessor Sensor Module PIN noField Wiring of Sensors Recommended Actuators StrokeField-Supplied Mixing Box Actuator Signal Wiring HAND/OFF/AUTO Switch Tran Ð Transformer High-Pressure Switch Remove JumperEvacuation 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 Pulse-Type Meter Wiring Control SystemCCN Communication Wiring AHU Air Handling UnitRelay Module Outdoor Air ThermostatLocal Interface Device Key Usage Function USE KeysOperative USE Keys Status History Schedule Service Set Point Test Functions and SubfunctionsSUB Function Number 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 Alarms Display CodesForce States Display DescriptionState of Items Controlled Example 3 Ð Forcing An Input ValueExample 4 Ð Forcing An Output Value Relay StagesExample 5 Ð Using Quick Test Example 6 Ð Logging On and Logging Off Service FunctionKeyboard 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 16 Ð Conguration of Discrete Temperature Control Example 17 Ð Service History CongurationExample 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 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 MAT Ð Mixed-Air Temperature OAT Ð Outdoor-Air TemperatureIAQ 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 Outside Air OACConstant Outside Air 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 TestControl Loop Checkout Direct Expansion DX Cooling TestDigital DC Volt Meter vs DC Milliamp Meter DC Milliamps DC VoltageValve Troubleshooting Recommended Gain Starting ValvesTypical Linkages Example 25 Ð Forcing An OutputIGV % 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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