Related Manuals for AAON Airflow
Summary of Contents for AAON Airflow
- Page 1 AAON Airflow Signal Processor Field Startup Guide Engineered for accuracy, applicability, durability and simplicity in HVAC air systems...
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Page 3: Table Of Contents
FIELD SETUP MENU ....................15 5.2.1. High/Low Alarm Option ..................15 5.2.2. Flow Correction ...................... 17 5.2.3. Factory Defaults ...................... 18 AAON FACTORY SETTINGS ................... 19 6.1. TECH CONFIGURATION MENU ................19 6.1.1. Area Factor ......................20 6.1.2. Altitude ........................21 6.1.3. - Page 5 INDEX OF FIGURES Figure 1 - Electrical Connections ....................9 Figure 2 - Electrical Connection with Wattmaster Controls ............10 Figure 3 - Pneumatic Connections ....................10...
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Page 6: Introduction
1. INTRODUCTION This guide is intended for field startup of the AAON Airflow Signal Processor. The full AAON Outdoor Airflow Measurement System Operation and Maintenance Manual (O&M) can be downloaded from the AAON website at www.AAON.com. 1.1. BASIC OPERATION The AAON Airflow Signal Processor receives a differential pressure signal from the AAON Airflow Station. -
Page 7: Safety
1.3. SAFETY 1.3.1. Electrical Connections Before any electrical connections are made, ensure the POWER SWITCH is in the OFF position. 1.3.2. Static Electricity The circuit board contains components which are susceptible to damage caused by static electrical discharge. Should it be necessary to remove the circuit board from the enclosure, appropriate precautions must first be taken to ensure that the operator and the circuit board are at the same electrical potential. -
Page 8: Product Dimensions
2. PRODUCT DIMENSIONS 5.785" 5.25" A ir Fl o w S I GN A L PROCES S OR 75 F 100,000 ACFM 3.50" 4.62" AAON 2.265" TOTAL STATIC CONNECTION... -
Page 9: Electrical & Pneumatic Connections
3. ELECTRICAL & PNEUMATIC CONNECTIONS All electrical and pneumatic connections to the AAON Airflow Signal Processor have been made at the factory as shown in Figures 1 through 3 below, with the exception of the electrical connection for network communication options other than with WattMaster Controls, if applicable. The following procedure outlines the steps for installing the interface wiring for network communication and for turning ON the AAON Airflow Signal Processor. - Page 10 HIGH ALARM POWER SUPPLY E-BUS DISTRIBUTION MODULE (24VAC/DC) - COMM LOW ALARM + COMM THE SHIELDING WIRE SHOULD BE USED TO CONNECT WATTMASTER GROUND TO AIRFLOW SIGNAL PROCESSOR GROUND. ANALOG RECEIVING DEVICE PROCESS OUTPUT AAON TEMPERATURE TRANSMITTER (4-20mA LOOP POWERED)
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Page 11: Active Displays & Key Functions
4. ACTIVE DISPLAYS & KEY FUNCTIONS 4.1. POWER-UP INITIATION DISPLAY Upon initial power-up, Software Revision information will be displayed on the graphic display for approximately 5 seconds. EQ-1 Software Rev. XX.XXX Modbus Rev. XX.XXX 4.2. PROCESS DISPLAY DESCRIPTIONS After power-up initialization, the following information will appear on the graphic display depending upon the options purchased. -
Page 12: Key Functions
Display. If a user starts to make a change and decides to cancel the change, the Escape Key will allow the user to return to the Active Display without making the change. Power Switch – Allows a user to turn power off to the AAON Signal Processor during field wiring or modifications to the device. -
Page 13: Field Startup
Field Setup Menu (see Section 5.2). During field startup, if the displayed value on the AAON Airflow Signal Processor does not match the reading from the Balancer, a Flow Correction (K-Factor) can also be entered under the Field Setup Menu (see Section 5.2). -
Page 14: Mac Address (Bacnet Communication Option)
Modbus network. The default is 002. For communication with WattMaster Controls the Modbus ID has been set by the factory to 009 for outside airflow applications. For additional information refer to the AAON Outdoor Airflow Measurement System O&M. -
Page 15: Baud Rate (Modbus And Bacnet Communication Options)
19.2, 38.4 and 76.8 Kbps baud rate. The default is 38.4 Kbps. For communication with WattMaster Controls, the Baud Rate has been set by the factory to 9.6 Kbps. For additional information refer to the AAON Outdoor Airflow Measurement System O&M. Tech. Config. - Page 16 5.2.1.1. Alarm Status The Alarm Status allows the user to independently turn each alarm ON or OFF. Field Setup Menu Output Filter Alarm Status Low Alarm Alarm Options Alarm Value (On) Factory Defaults Alarm Delay High Alarm Output Filter (On) 5.2.1.2.
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Page 17: Flow Correction
5.2.2. Flow Correction The Flow Correction Menu was incorporated into the AAON Airflow Signal Processor to give the user an easy way to make corrections to the display and output without changing the Operating Range Value entered by the factory or user. The Flow Correction Menu would be used to correct for a constant error from zero to the entered Operating Range Value. -
Page 18: Factory Defaults
If parameter configuration changes have been made incorrectly to the AAON Airflow Signal Processor, all device settings can be restored to the original AAON factory settings by selecting YES and pressing Enter in both the Set To Factory Defaults Menu and the Verify Set To Factory Defaults Menu (see Factory Defaults table below for a list of Saved Settings). -
Page 19: Aaon Factory Settings
6. AAON FACTORY SETTINGS To convert the differential pressure signal from the AAON Airflow Station to a flow value, the Area Factor associated with the AAON Airflow Station has been entered by the factory; see Figure 3 in Section 3 for proper pneumatic connection of the AAON Airflow Station. The AAON Airflow Signal Processor Operating Range has also been configured for the specific application and will display the measured flow rate in Engineering Units of actual cubic feet per minute (ACFM). -
Page 20: Area Factor
6.1.1. Area Factor To convert the differential pressure signal from the AAON Airflow Station to a flow value, the Area Factor associated with the AAON Airflow Station has been preprogramed by the factory. If the Area Factor needs to be checked or reconfigured, the correct Area Factor for the AAON Airflow Station can be found on the AAON Airflow Station product label installed in the air handling unit. -
Page 21: Altitude
-Area Factor Example- Op Range value within Area Factor New Min/Max values (FT ) Accepted (001.200) Area Factor (FT ) (001.000) Warning Message Entering a new Area Factor and pressing Op Range Outside Operating Range the Enter button will Allowable Value. (ACFM) calculate new Min &... -
Page 22: Modbus Id (Modbus Communication Option)
Modbus network. The default is 002. For communication with WattMaster Controls the Modbus ID has been set by the factory to 009 for outside airflow applications. For additional information refer to the AAON Outdoor Airflow Measurement System O&M. -
Page 23: Baud Rate (Modbus And Bacnet Communication Options)
19.2, 38.4 and 76.8 Kbps baud rate. The default is 38.4 Kbps. For communication with WattMaster Controls, the Baud Rate has been set by the factory to 9.6 Kbps. For additional information refer to the AAON Outdoor Airflow Measurement System O&M. Tech. Config. -
Page 24: Operating Range
110% of the design supply flow rate, unless this value is less than the Minimum Full Scale Value allowed for the AAON Airflow Signal Processor. The menu will display the Minimum Full Scale Value allowed which is then entered as the Operating Range. -
Page 25: Temperature Compensation
Temperature Compensation corrects the flow signal for density changes caused by variations in the air temperature. An input signal from the AAON Temperature Transmitter is required; see Figure 1 in Section 3 for proper temperature transmitter connection and Section 6.3.2 for temperature input signal configuration. - Page 26 The Temperature Input Menu allows the user to select between three temperature input options (Fixed, Variable, and Network) for the flow calculations. Since the AAON Temperature Transmitter has been supplied, Variable has been selected. If Fixed is selected, the default temperature value entered in the Fixed Value Menu (see Section 6.1.2.4) is used.
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Page 27: Input/Output Set-Up
Voltage 0-5VDC 6.3.2. Temperature Input Since the AAON Temperature Transmitter has been provided, the temperature input has been set by the factory for 4-20mA. To change the input configuration, set the S1 switch as follows: Temperature Input S1 Switch Selection... - Page 32 Parts: For replacement parts please contact your local AAON Representative. It is the intent of AAON to provide accurate and current product information. However, in the interest of product improvement, AAON reserves the right to change pricing, specifications, and/or design of its product without notice, obligation, or liability.