Honeywell AC-220-7, AC-140-7 manual HI Limit or LOW Limit Sensor B only

Page 28

T775A/B/M SERIES 2000 CONTROLLER

2. SETUP (ADVANCED OPTIONS)

SETUP

SENSORS SENSOR B

LIMIT

SETUP

SENSORS

SENSOR B

LIMIT

DISABLE

HI LIMIT

LOW LIMIT

SELECT

 

HI/LOW

 

LIMIT FOR

 

SENSOR B

M24508

 

2.2.4.LIMIT (Sensor B only)

For the T775M2030 and T775M2048 models only, the LIMIT item displays on the Sensor B menu.

NOTE: The LIMIT option acts only on Modulating Output 1.

1.

From the Sensors menu, use the T button to high-

 

light SENSOR B.

2.

Press the X button to display the Sensor B menu.

3.

Use the S and T buttons to select the LIMIT item.

4.

Use the X button to display the Limit selections.

Fig. 42. Setup - Sensors - Sensor B - Limit.

5.

Use the S and T buttons to select the desired limit,

 

(Disable, Hi Limit, or Low Limit).

 

Default: Disable

6.

Press the X button to accept the value and return to

 

the Sensor B menu.

When you select Hi Limit or Low Limit, the Sensor B menu changes and adds the Hi/Low Limit and Throttling Range items.

If you are setting a Hi or Low Limit, continue with “2.2.4.1. HI LIMIT or LOW LIMIT (Sensor B only)”.

If you selected Disable for the Limit value, continue with “2.3. Setting up the Outputs” on page 21.

SETUP

SENSORS

SENSOR B

SETUP

SENSORS SENSOR B

UNITS CALIBRATE LABEL LIMIT

HI LIMIT THROT RNG EXIT

SETUP

SENSORS

SENSOR B

HI LIM

90 oF

ENTER

VALUE FOR

SENSOR B

HI LIMIT

M24509

2.2.4.1. HI LIMIT or LOW LIMIT (Sensor B only)

Fig. 43 shows the Hi Limit (Heat mode), but the process is the same for setting the Low Limit (Cool mode). For proper operation, the high limit should be used only in the Heat mode, and the low limit only in the Cool mode.

Sensor B can be assigned a high/low limit, so that as you are controlling temperature at Sensor A, the control adjusts its modulating output to prevent exceeding the user-entered limit for Sensor B.

1.

From the Sensor B menu, use the T button to high-

 

light HI LIMIT or LOW LIMIT.

2.

Press the X button display the LIMIT value.

3.

Use the S and T buttons to increase/decrease the

 

desired Limit value.

4.

Press the X button to accept the value and return to

Fig. 43. Setup - Sensors - Sensor B - Hi/Low Limit

(showing Hi Limit).

the Limit menu.

62-0254–03

20

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Contents FP-4 Freeze Protection KIT Section IntroductionInstallation SectionInstalling the Conduit Section Installation Control BOX Component Layout and Wiring DiagramSetting the Controller OperationSection Troubleshooting Troubleshooting ProceduresSection Replacement Parts Replacement PartsSection Warranty PER VAN AIR Terms and Conditions of SaleProduct Description Controller Dimensions Temperature SensorsaAccessories Before Installation Installation and SetupWiring MountingWiring Connections Access Temperature Sensor WiringTemperature Sensor Wire Type and Size Multiple Parallel SensorsController Wiring Controller Wiring MethodWiring Applications Examples Controller Wiring DetailsDescription 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 Power Loss Temperature Sensor CalibrationCheckout Foota MΩ/ft Rating 200 ft 500 ft 000 ftInterface Overview Using the LCD Panel InterfaceHome Screen Accessing the Menus Using the MenusSetup Menu Programming, Scheduling, and Summary MenusHeating Mode Setpoint and Differential Cooling Mode Setpoint and DifferentialProgramming Setpoint and DifferentialProgramming the T775A/B/M Controller Entering Program ModeProgram Menu for Outputs Sensor Differential or Throttling RangeHEAT/COOL Setback Exiting Program ModeProgram Next Output Mod or Relay Setup Advanced Options Setup ProcedureEntering Setup Mode Setting up the SensorsSensor a Units F or CCalibrate the sensor Label the sensor inputExit Sensor a Setup Sensor BCalibrate LabelHI Limit or LOW Limit Sensor B only Limit Sensor B onlySetting up the Modulating Outputs Setting up the OutputsThrottling Range Sensor B only MIN OUT % Type of output signalIntegral Schedule ExitOptions USE SchedDI Options digital input options MIN OFF minimum off time for all relaysShow RT show run time hours Setting up the Relays Exit Options SetupType standard or floating Floating Relay Menu Reset RT run time hours Derivative modulating/floating relay onlyExit Setup Mode Setup Outputs Relay ExitScheduling Entering Schedule ModeCreating a Schedule SET Date SET TimeDaylight daylight saving time Mon-Fri Schedule Defaults Setting Individual Schedules1. E1 Setpt setpoint for event Exiting Scheduling Mode Exit exit from selected time period settings2. E1 Time time for event 3. E2 Setpoint setpoint for eventTroubleshooting Errors and DiagnosticsError Message Diagnostic MessagesSafety Compliance Emissions 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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