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HONEYWELL W7750A2005 PDF

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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The above mention sources of override must be either Not Assigned or Off before the Override pushbutton affects the manual override status in the Network Wins scheme. Sensor Hneywell 20 7.

For wall module wiring, U. Type of Air Handler 1. With percent load, the transformer secondary must supply between 23 and 25 volts to meet the NEMA standard. Local CO2 Analog Input—directly wired to the controller. Each Neuron has a unique bit network identification number.

Smoke Control The Excel 10 W Controller supports smoke-related control strategies that are initiated either via a network command DestEmergCmd or from a local physically connected smoke detector digital input.

The smallest resolution is 0. All control functions associated with the failed NV are disabled as if the NV was not configured. The PID control algorithm used to control staged heating is anticipator-driven, and is similar to the algorithm used in the T commercial thermostat. Additional features available in TA,B models include analog setpoint input knob, override digital input pushbutton, humidity sensor TB modelhoneuwell status LCD and digital display.

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If economizer dampers are configured, and the outdoor air is suitable for free cooling, the economizer operates as the first stage of cooling. This information is required by the Excel 10 to perform the optimum start strategy. Location of the Service Pin Button The setpoint is always adjusted in the energy-saving direction. CurrentState is used along with other occupancy inputs to calculate the effective occupancy of the node. Also, 10 percent of the Control Band value is the size of the deadband around the honeywdll where no actuator motion occurs.

W7750A2005 Excel10 CVAHU

Setpoint ramping parameters with setpoint calculation. X Window allows the hard wired window honeyeell to be used by other nodes on the network. IaqOverRide is 1 then poor air quality is also detected. Sensor Voltage Versus Humidity. Hooneywell closed means that the filter is dirty. See Application Step 5. Differential Enthalpy, Either Sensed or Calculated— the difference between outdoor enthalpy and return air enthalpy determines whether outdoor air or return air is more suitable to augment mechanical cooling.

The valid states are as follows: Direct Access And Special Points. As the error signal increases and the space temperature is getting farther away from setpoint, or is remaining above setpoint as time elapses, additional stages of cooling are honeywsll until, if PID error reaches percent, all configured stages are on. The indoor air quality is acceptable.

As the discharge temperature warms up, the economizer modulates open until the minimum position setting is reached. WA Controller floating economizer damper wiring diagram. The alarm condition remains until the temperature exceeds the alarm limit plus hysterisis. Prepare Wiring Diagrams section, for wiring details. OdHum allows the local outdoor humidity sensor to be shared with other nodes and is typically bound to OdHum on other nodes.

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Honeywell W7750A2005 Excel 10 Cvahu

Although acceptable, the four-volt line-loss in this example is higher than recommended. Then the control including the fan is restarted and ProofAirFlow is again tested. If the analog value is greater than zero percent, an additional time is added to the minimum pulse time. Contact W750a2005 for information about Controllers and Wall Modules with no logo.

An external packaged economizer control then modulates the dampers.

Honeywell WA User’s Manual |

The controller remains in this mode indefinitely until the Hoenywell pushbutton is pressed to exit the w7750a2005 or a network command is sent to clear the mode.

The W can also be mounted using DIN rail. Off—no power to the processor. The Excel 10 W Controller expects a contact closure to indicate the space is Occupied. If any one bound window sensor shows window open, then Window shows window open for up to seconds after the last sensor shows window closed. OverRide for more details.