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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CA 4 to 20mA. WA Controller floating economizer damper wiring diagram. Each individual Triac is rated 1A at 30 Vac maximum. This code is added numerically to another alarm code to indicate that the alarm condition has returned to normal. When in Standby or Unoccupied modes, the outdoor air dampers are allowed to fully close if there is no call for cooling, or if the outside air is not suitable for cooling use.
Using the transformer-coupled communications interface offers a much higher degree of common-mode noise rejection while ensuring dc isolation. Heat pump with two compressors and auxiliary heat stage s.
When necessary, use heavier gauge hkneywell, a bigger transformer, or install the transformer closer to the controller.
WA Excel10 CVAHU
Industrial Combustion Training Videos. If long power or output wire runs are required, a voltage drop due to Ohms Law I x R line loss must be considered. The TA,B displays the moon symbol.
Wire the ohm resistor physically as close as possible to the driven device. This frees the system honwywell from wiring using a specific bus topology.
Honeywell W7750A2005 Industrial Control System
EconEnable indicates the current suitability of outdoor air for use in cooling used by the control process EconEnable is periodically calculated either from the sensor s specified by nciConfig. Order Status and History. Typical WB Controller q7750a2005 staged heating and cooling wiring diagram. IaqOvr allows an indoor air quality sensor to be shared with other nodes and is typically bound to IaqOvr on other nodes.
Power wiring details for one Excel 10 per transformer. Power wiring details for two or more Excel 10s per transformer. The W Controller is capable of stand-alone operation; however, optimum functional benefits are achieved when the network communication capabilities are used.
Use noble metal such as gold or silveror pimpled or sealed contacts honsywell assure consistent, long-term operation. The newest alarm is reported in type and the oldest is reported in type.
EconFloatSynch indicates that the economizer damper motor is being synchronized with the reported economizer position by driving the damper for a period longer than it takes to fully close the damper. IaqOverRide is set to 0.
TA through D Wall Modules. Bypass status is a controller-timed event whose duration is set in BypTime. Here, bypass initiates a self-timed bypass of the control unit and expires upon completion of the defined timed period. When DlcShed is 1, demand limit control set by an energy management node is active. This information is required during installation to ensure honeydell the proper number and type of wires are pulled to the wall modules, and the building operators are informed about where they can plug in to the LONWORKS Bus network with a portable operator terminal see Fig.
Typical WA Controller with separate transformer application wiring diagram. An external packaged economizer control then modulates the dampers. Staged output control versus PID Error.
ENEN Contacts closed equals Occupied. These three sources are arbitrated in a scheme determined by the configuration parameter Network Wins or Last-in Wins from OvrdPriority. Troubleshooting Troubleshooting Excel 10 Controllers and Wall Modules In addition to the following information, refer to the Installation Instructions and Checkout and Test manual for each product.
Heat pump with two compressors and auxiliary heat stage s Local Dirty Filter Digital 2. For more information on note 2, refer to Fig. The output has the following states: See Application Step 6. The length of time added is directly proportional to the magnitude of the analog value. This makes it possible for several occupancy sensors to be ORed together by binding them all to nviSensorOcc.
When using the network input, select Econo Enable Type: False 0 it is not freezing or True 1 it is freezing. There are two possible states which have the following meanings: 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.
The WA Unit supports the following hardware features: Also, the application engineer must consider the possible combinations of simultaneously energized outputs and calculate the VA ratings accordingly. Series 60 Modulating electric damper motor, or pneumatic via transducer. Page 93 Table Energy has priority over ventilation.