Honeywell AC-140-7, AC-220-7 manual Programming, Setpoint and Differential, Setpoint High Limit

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1. PROGRAMMING

T775A/B/M SERIES 2000 CONTROLLER

1. PROGRAMMING

The controller must be programmed before being placed into service.

IMPORTANT

During programming, the controller is live at all times. For example, the contacts may open and close when adjusting the setpoint.

The Programming process uses a hierarchical menu structure that is easy to use. You press the W and X arrow buttons to move forward and backward through the menus.

NOTES:

1.The controller interface is intuitive. You may find that you do not need the following proce- dure instructions to program the controller.

You may want to use this procedure simply as a reference to locate the particular option or parameter of interest.

2.The menus can display only those relays that are defined in Setup (see “2.3.2. NBR OF RELAYS” on page 24). For example, if you configure only two relays, then only two relays display on the appropriate menus.

3.If you press the HOME button or there is no keypad activity for four minutes, you exit Pro- gram mode and return to the home screen.

4.If you press the MENU button, you exit Pro- gram mode and return to the menu.

Setpoint and Differential

The following describes the relationship between setpoint and differential for heating and cooling. These settings are programmed for each output relay.

Heating Mode Setpoint and Differential

In heating mode, the differential is below the setpoint. The relay de-energizes when the temperature rises to the setpoint. As the temperature drops to the setpoint minus the differential, the relay energizes.

Cooling Mode Setpoint and Differential

In cooling mode, the differential is above the setpoint. The relay de-energizes when the temperature falls to the setpoint. As the temperature rises to the setpoint plus the differential, the relay energizes.

Setpoint High Limit

You can set a single irreversible setpoint high limit maximum value, which is applied to all outputs.

Adjust the setpoint (at any output) to the desired maximum setpoint. Then, simultaneously press the home, W, and X buttons and continue to press all three buttons for five seconds to set the setpoint high limit maximum to this value.

NOTE: You must press all three buttons at exactly the same time for this action to occur.

IMPORTANT

1.This action sets the maximum setpoint value of all outputs to the setpoint high limit maximum.

2.Setting the high limit setpoint maximum is irre- versible. If you perform the action inadvertently and this setpoint adversely affects the control of your system, you must replace the controller.

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Contents Section Introduction FP-4 Freeze Protection KITSection InstallationInstalling the Conduit Control BOX Component Layout and Wiring Diagram Section InstallationOperation Setting the ControllerTroubleshooting Procedures Section TroubleshootingReplacement Parts Section Replacement PartsPER VAN AIR Terms and Conditions of Sale Section WarrantyProduct Description Temperature Sensorsa Controller DimensionsAccessories Installation and Setup Before InstallationWiring MountingTemperature Sensor Wiring Wiring Connections AccessTemperature Sensor Wire Type and Size Multiple Parallel SensorsController Wiring Method Controller WiringController Wiring Details Wiring Applications ExamplesDescription of Wiring Terminal Connections Terminal Label Connection Terminal Label Description SensorsWiring for four-stage control 24 Vac input 24 Vac load Wiring for ML7984 valve actuator Wiring for three Series 90 Modutrol Motors Temperature Sensor Calibration Power LossCheckout Foota MΩ/ft Rating 200 ft 500 ft 000 ftUsing the LCD Panel Interface Interface OverviewHome Screen Using the Menus Accessing the MenusSetup Menu Programming, Scheduling, and Summary MenusCooling Mode Setpoint and Differential Heating Mode Setpoint and DifferentialProgramming Setpoint and DifferentialEntering Program Mode Programming the T775A/B/M ControllerProgram Menu for Outputs Differential or Throttling Range SensorHEAT/COOL Exiting Program Mode SetbackProgram Next Output Mod or Relay Setup Procedure Setup Advanced OptionsEntering Setup Mode Setting up the SensorsUnits F or C Sensor aCalibrate the sensor Label the sensor inputSensor B Exit Sensor a SetupCalibrate LabelLimit Sensor B only HI Limit or LOW Limit Sensor B onlySetting up the Outputs Setting up the Modulating OutputsThrottling Range Sensor B only Type of output signal MIN OUT %Integral Exit ScheduleUSE Sched OptionsMIN OFF minimum off time for all relays DI Options digital input optionsShow RT show run time hours Exit Options Setup Setting up the RelaysType standard or floating Floating Relay Menu Derivative modulating/floating relay only Reset RT run time hoursSetup Outputs Relay Exit Exit Setup ModeEntering Schedule Mode SchedulingCreating a Schedule SET Time SET DateDaylight daylight saving time Setting Individual Schedules Mon-Fri Schedule Defaults1. E1 Setpt setpoint for event Exit exit from selected time period settings Exiting Scheduling Mode2. E1 Time time for event 3. E2 Setpoint setpoint for eventErrors and Diagnostics TroubleshootingError Message Diagnostic MessagesEmissions Compliance Safety ComplianceImmunity Compliance FCC Compliance StatementDOC T775A/B/M Series 2000 Controller

AC-220-7, AC-140-7 specifications

The Honeywell AC-140-7 and AC-220-7 are advanced air conditioning units that exemplify modern air conditioning technology, delivering both comfort and efficiency. Designed for varying space requirements, these units cater to both residential and light commercial settings, providing versatile solutions for climate control.

The AC-140-7 model is particularly known for its compact design, making it suitable for smaller spaces without sacrificing performance. It delivers an impressive cooling output, effectively maintaining comfortable indoor temperatures even during the hottest months. The system utilizes a high-efficiency compressor that operates quietly, ensuring minimal disruption to daily activities. Additionally, the AC-140-7 features an advanced air filtration system that helps to improve indoor air quality by capturing dust, allergens, and other particulates.

In contrast, the AC-220-7 is designed for larger spaces, providing robust cooling capacity. It incorporates multiple fan speeds and advanced thermostatic controls, allowing users to customize their cooling experience according to their preferences and requirements. One of the standout characteristics of the AC-220-7 is its energy efficiency, with a high Seasonal Energy Efficiency Ratio (SEER) rating, which is crucial for reducing energy costs while maintaining optimal performance.

Both models are equipped with state-of-the-art technologies, including smart diagnostic features that help users troubleshoot issues quickly and efficiently. This capability not only enhances the user experience but also prolongs the lifespan of the units. Furthermore, these units are easy to install and maintain, with accessible components for service and cleaning.

A critical characteristic of the Honeywell AC-140-7 and AC-220-7 is their environmentally friendly refrigerants, which align with modern environmental regulations. This aspect makes them a responsible choice for environmentally conscious consumers.

In summary, the Honeywell AC-140-7 and AC-220-7 units are excellent examples of innovation in air conditioning solutions. With their combination of efficiency, advanced features, and quiet operation, these models represent a significant investment in comfort and sustainability for any space. Whether cooling a small room or a larger area, Honeywell’s engineering excellence ensures that users enjoy effective climate control tailored to their needs.
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