HONEYWELL W7750A2005 PDF

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C-Bus Honeywell proprietary Control Bus for communications between Excel 10 W Controllers: WA Constant Volume AHU Controller. Product – Brand: Honeywell; Product Number: WA; SINGLE ZONE AHU WITH STAGED HEAT/COOL OR HEAT PUMP. Category: HVAC. Product Identifiers. GTIN. BRAND. Honeywell. MPN. WA UPC. eBay Product ID (ePID).

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Graph of Sensor Voltage versus Humidity This limit is set in the Excel 10 Zone Manager database as an absolute maximum.

Honeywell WA User’s Manual |

Sensor Voltage 20 7. Econ does not affect Econ.

The alarm joneywell remains until the temperature exceeds the alarm limit plus hysterisis. TC 65 Appendix A. When it is configured, it provides the temperature input for the W temperature control loop. Emergency Shutdown all outputs off. Outdoor Enthalpy, Type C—when the outdoor enthalpy meets the H type C requirements, the outdoor air is suitable to augment cooling.

Honeywell W7750A2005 Industrial Control System

The PID control algorithm used to control staged heating is anticipator-driven, and is similar to the algorithm used in the T commercial thermostat. NetManOcc for more details. Before honehwell management node reads or writes any network variables, the management node checks nviInUse for a zero value meaning no other management nodes are already logged on and that a management node may log on to the node. OverRide for more details.

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Each controller requires 5 in. It is very important that the device used contains high quality, noncorroding contacts with resistivity that does not degrade; that is, increase over time.

All actions, in this case, taken from the Override pushbutton are locked out. Also, the Excel 10 variables, AlarmLogX where X is 1 through 5, that store the last five alarms to occur in the controller, are available. Contacts closed means poor IAQ is detected.

A configuration parameter is available to disable wall-module initiation of Continuous Unoccupied mode OvrdType. Type of Air Handler 1.

W7750a 2005 Honeywell Excel 10 Constant Volume Air Handling Unit

PWM control positions the 61 actuator based on the length, in seconds, of the pulse from the digital output. Also, when a wall module setpoint pot is configured, this value serves as the lower limit on the user adjustable remote setpoint pot wall module.

At this point, the low limit alarm is cleared. If no return temperature sensor is configured, space temperature is used to calculate return air enthalpy. By pressing the wall module pushbutton for more than four seconds, the controller sends out the Service Message. Determine the number of points per controller required at the Central for example, XBS. CurrentState using the following logic: BypassTime seconds on the first press. Contacts closed equals Occupied. If ManOcc changes to another value the timer is stopped.

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Radiated Emissions and Conducted Emissions: Free Topology Transceiver FTT network technology is insensitive to polarity, simplifying installation. Up to four stages of mechanical cooling and up to four stages of heating are allowed. X Window allows the hard wired window sensor to be used by other nodes on the network. DestManOcc Has possible states: OccTImeClock is not 1.

The compared difference determines whether outdoor air is suitable for use to augment mechanical cooling.