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FORM ASX-31003-C
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
Air Specialties Express, 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040
DO NOT INSTALL, USE OR OPERATE THIS EQUIPMENT UNTIL THIS MANUAL HAS BEEN READ
AND UNDERSTOOD. READ AND SAVE THESE INSTRUCTIONS FOR FUTURE USE.
The ASX Pressure control system uses the flexibility of our highly efficient EC motors and controllers in
conjunction with accurate pressure measuring equipment and a versatile setpoint control unit to maintain a
user-defined duct static pressure.
A direct drive ASX fan with
Eco-Drive motor and Automation
Control Unit (ACU).
NOTE: Fan must be sized appropriately for the system it is connected to as well as all intended system
configurations.
NOTE: The ACU can be used to manually control the output of the motor independently from the rest of the
pressure control system. This is beneficial for system balancing as well as for fine tuning of the setpoint
control system. Refer to the ASX ECM - ACU Control Specification Sheet for details on how to operate
the ACU controller.
PRESSURE CONTROL OPTION WITH ECM MOTORS
The system consists of the following three components:
A static pressure tap located in the
duct, connected to an electronic
pressure transducer.
Phone: (877)945-9175
CAUTION!
Fax: (608)845-6504
www.airspecialties.com
A setpoint control with three
character, digital display.
FORM ASX-31003-C, Page 1
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Table of Contents
Summary of Contents for Express ASX-31003-C
- Page 1 FORM ASX-31003-C INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS PRESSURE CONTROL OPTION WITH ECM MOTORS Air Specialties Express, 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: (877)945-9175 Fax: (608)845-6504 www.airspecialties.com CAUTION! DO NOT INSTALL, USE OR OPERATE THIS EQUIPMENT UNTIL THIS MANUAL HAS BEEN READ AND UNDERSTOOD.
- Page 2 STARTUP PROCEDURE Follow these basic steps when installing and commissioning your pressure control system. 1. Install and wire the fan, setpoint controller, and pressure transducer. 2. Run the fan independently from the pressure setpoint system to verify proper operation and performance. Refer the ACU control specifi...
- Page 3 • Use the “COM” terminal to connect both the grounded side of the 24VAC and the negative side of the 0-10VDC output signal circuit. • Connect the positive lead of the 0-10VDC output signal circuit to the “OUT” terminal. • The pressure transducer and the Setpoint control come from the factory confi...
- Page 4 Setpoint Control Operation: The setpoint controller has the following four buttons on its keypad. You will use these buttons to control all functions of the controller. Prg/mute Navigating through menus: • The Display menu is the default menu and will be displayed on the controller during normal operation. In this menu common values can be changed or displayed such as the setpoint or duct static pressure.
- Page 5 Operating Range: As mentioned in the pressure transducer section, the Pressure Control system can be confi gured to operate in one of three pressure ranges. Changing the range to better match your system’s actual pressure range can make the systems pressure changes more accurate and can prevent errors in the transducer’s readings. To change the pressure range you must make adjustments to both the pressure transducer and to the setpoint controller.
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