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®
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
Sure-Aire™ Electronics Features:
• NEMA-4 / IP56 enclosure rating
• Factory calibrated
• 24 VDC / 24 VAC or 100-240 VAC 50 / 60 Hz input
voltage
• Part numbers and pressure ranges:
386719 – 0-4.15 in. wg
386720 – 0-8.30 in. wg
386721 – 0-22.14 in. wg
386722 – 0-41.52 in. wg
386723 – 0-83.14 in. wg
386724 – 0-138.40 in. wg
Pressure ranges reflect differential pressures between
the fan inlet and inlet cone, not system static pressure.
• Isolated output transmitter linear to differential
pressure or volume
4-20 mA
2-10 VDC
• Communication protocols
BACnet MSTP
Modbus
• LCD display with user-friendly touch panel interface
• Temperature compensation for air density
• Remote duct temperature sensor
• Programmable elevation
• English or metric readings
®
User and Service Manual
Hardware Required:
•
Four (4) #8-32 screws
•
1/4-inch nylon tubing (length dependent on
distance between fan and Sure-Aire electronics,
maximum 75 feet (23 m) each line)
•
Sensor wiring for temperature sensor (if
temperature sensor is being used)
Flow Accuracy + / - 3.0% of actual flow
Transducer in Electronics:
•
Accuracy +/- 0.5% of full scale at 77ºF (25ºC)
•
Pressure limit: 70 psi (1938 in. wg)
•
Thermal effects: 0.015%/°F (0.027%/°C) from -13°
thru 185°F ( 25° thru 85°C)
WARNING
Improper installation, adjustment, alterations,
service or maintenance may cause injury and / or
property damage, as well as possibly void the
factory warranty. No person may install, operate,
or maintain a Sure-Aire™ electronics without first
being fully trained and qualified in the installation,
operation and maintenance, and carefully reading and
understanding the contents of this manual. If you have
any questions about these instructions, contact your
local representative.
CAUTION
Risk of electrical shock! More than one disconnect
switch may be required to de-energize the equipment
before servicing.
Sure-Aire™ Flow Monitoring System
Document 1021624
Sure-Aire™ Electronics
1
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Table of Contents
Related Manuals for Greenheck Sure-Aire
Summary of Contents for Greenheck Sure-Aire
- Page 1 4-20 mA property damage, as well as possibly void the 2-10 VDC factory warranty. No person may install, operate, or maintain a Sure-Aire™ electronics without first • Communication protocols being fully trained and qualified in the installation, BACnet MSTP operation and maintenance, and carefully reading and Modbus understanding the contents of this manual.
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Page 2: Table Of Contents
K-Factors......16 Match the Tag Mark on the Sure-Aire electronics tag to the Tag Mark on the fan nameplate. Sure-Aire electronics are supplied set-up individually for a specific model and performance. -
Page 3: General Information
1. Mount the electronics in the vertical plane using four (4) #8-32 screws, field supplied. Open the front cover by unscrewing the two captive thumb screws to gain access to the four mounting locations. Note: Mount the Sure-Aire™ electronics within 75 feet of the termination plate on the fan. 2. Use 1/4-inch nylon tubing to connect the... - Page 4 7. Select the desire network protocol of the electronics for the Building Automation System. Use the touch screen to select Modbus/BACnet, baud rate, and the network address of the electronics. This is done via the setup menu. (Refer to Setup Menu, Output Signal, page 9) Sure-Aire™ Flow Monitoring System ®...
- Page 5 RX(-)B 16-bit 16-bit address address RX(+)A K Factor SGND Elevation Outlet Area Flow Temperature 4-Wire RS485 Wiring Diagram ULINX Sure-Aire Pressure USB-to-RS485 Terminal Block Volume TDA(-) RX(-)B Velocity TDB(+) RX(+)A RDA(-) TX(-)Z RDB(+) TX(+)Y SGND Sure-Aire™ Flow Monitoring System ®...
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Page 6: Menu Structure
Menu Structure Air Density Air Flow Temperature Sensor Installed Electronics Temperature Up / Down Differential Pressure Measurement Setup Pressure Sensor Range See page 7 for parameter Setup menu. K-Factor Software Version Transmitter Output Type Units Elevation Sure-Aire™ Flow Monitoring System ®... - Page 7 Device Instance Number 0 - 1000 Transmitter Calibration Transmitter Min/Max Value See manual for details Display Brightness 80% (default) 10 - 100% Load Factory Defaults No (default) Load Customer Defaults No (default) Save Customer Defaults No (default) Sure-Aire™ Flow Monitoring System ®...
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Page 8: Display Setting Options And Parameter Setup
Press “Edit“ to change the measurement system units. • CFM (default) Press “Prev“ or “Next“ to adjust, then press “Enter“ to • m³/hr store the value. • m³/min • English (default) • Metric Sure-Aire™ Flow Monitoring System ®... - Page 9 The maximum flow rate is displayed on the screen. WARNING Due to load resistance change from product to product, it may be necessary to recalibrate the 4-20 mA electronics. See 4-20 mA transducer calibration procedure. Sure-Aire™ Flow Monitoring System ®...
- Page 10 “Enter” to store the value. Note: See Transmitter Calibration Section. Transmitter Max Value: Press “Edit” to change Transmitter Max Value. Press “Inc” or “Dec” to adjust, then press “Enter” to store the value. Note: See Transmitter Calibration Section. Sure-Aire™ Flow Monitoring System ®...
- Page 11 Load Customer Defaults: Edit / Exit Prev Next Enter Press “Edit“ to load customer defaults. Press “Prev“ or “Next“ to select “Yes“, then press “Enter“. • No (default) • Yes (loads all customer default settings) Sure-Aire™ Flow Monitoring System ®...
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Page 12: Ma Transmitter Calibration Procedure
2.2 Validate the power is OFF on the DC power supply and the Sure-Aire electronics. For example, the Sure-Aire electronics with a pressure sensor of 0 - 41.51 in. wg installed, 4.00 mA = 0 in. Validate the multimeter is set to read mA DC. -
Page 13: Vdc Transmitter Calibration Procedure
Apply a vacuum to the Low Port and the 2-10 VDC transmitter to track the span of the pressure range. For example, the Sure-Aire electronics with a pressure sensor of 0 - 41.51 in. wg installed, 2 VDC = 0 in. wg, 10 VDC = 41.52 in. -
Page 14: Temperature Sensor
All of the objects / registers that are exposed on the network do not have a unit associated with them. The units of the values exposed on the network will be based on the units that are selected on the Sure-Aire™ electronics. -
Page 15: Analog Output Signal - Optional
K is the K-Factor for the specific fan model and size, ΔP is the measured differential pressure across the inlet cone (in. wg), and ρ is the density of air (lb/ft³ °F). K-Factors for Greenheck models are found on the back cover. -
Page 16: K-Factors
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature section of the website at Greenheck.com/Resources/Library/Literature.