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Summary of Contents for ENERVEX MEC 18
- Page 1 ENERVEX MEC 18 MECHANICAL EXHAUST CONTROL 3916010 06.16 Installation & Operating Manual READ AND SAVE THESE INSTRUCTIONS! ENERVEX Inc. P: 770.587.3238 1685 Bluegrass Lakes F: 770.587.4731 Parkway T: 800.255.2923 Alpharetta, GA 30004 info@enervex.com www.enervex.com...
- Page 2 3916010 06.16 The MEC 18 Mechanical Exhaust Control is ETL Listed in the U.S. and Canada: under file #302882A TO REDUCE THE RISK OF FIRE, Symbol Legend The following terms are used throughout this manual to bring ELECTRICAL SHOCK OR INJURY TO...
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Page 3: Table Of Contents
3916010 06.16 Content 1. PRODUCT INFORMATION 1.1 Function ..............4 1.2 Shipping ..............4 1.3 Warranty ..............4 2. SPECIFICATIONS AND DIMENSIONS 2.1 Dimensions and Capacities ........5 3. MECHANICAL INSTALLATION 3.1 Location..............6 3.2 Mounting of Control ..........6 3.3 Mounting of Transducer ......... -
Page 4: Product Information
The control has an integrated safety system that assures the appliance shuts down in the event of fan and/or control failure. The use of the MEC 18 is not restricted to any type of duct or venting application. When the appliance is activated, the control sends maximum voltage to the fan or VFD. -
Page 5: Dimensions And Capacities
3916010 06.16 2. SPECIFICATIONS 2.1 DIMENSIONS AND CAPACITIES Specifications MEC 18 Control Power supply 1x120VAC MEC 18 Amperage Operating temperature °F/°C -4 to 122 / -20 to 50 Range of operation inWC / Pa 0-0.6 / 0-150 Tolerance inWC / Pa 0.01 / 3 +/-10%... -
Page 6: Mechanical Installation
See Fig. 3. The distance between the control and the transducer should not exceed three hundred (300) feet. Fig. 2a MEC 18 E X H A U S T C O N T R O L Fig. 3... -
Page 7: Mounting Of Transducer
3916010 06.16 3.3 MOUNTING OF TRANSDUCER Attention must be paid to the location of the transducer. The transducer can be mounted in any orientation but preferably with the pressur eports facing down. The transducer should be mounted within six (6) feet of the duct probe. -
Page 8: Electrical Installation
Power Supply-L1 shock or death. Power Supply-N Power Supply-Ground MEC 18 is designed for a 1x120VAC power Voltage Input from Appliance thermostat supply only. Fan output is regulated on the Optocoupler (-) (10-120VAC/CDC neutral side and cannot be connected to other Voltage Input from Appliance thermostat circuits. -
Page 9: Continuous Fan Operation
- If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11. DO NOT connect the fan directly to the MEC 18 control. • Connect the transducer (XTP) to terminals 22, 23 and 24. -
Page 10: Intermittent Fan Operation
- If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11. DO NOT connect the fan directly to the MEC 18 control. • Connect the transducer (XTP) to terminals 22, 23 and 24. - Page 11 - If using a 3-phase fan and VFD, connect the VFD to terminals 25 and 26 as shown in Fig. 10 and 11. DO NOT connect the fan directly to the MEC 18 control. • Connect the transducer (XTP) to terminals 22, 23 and 24.
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Page 12: Connection To A Variable Frequency Drive
4.4 CONNECTION TO A VARIABLE FREQUENCY DRIVE To connect the 3-phase fan and variable frequency drive (VFD), connect the VFD to terminals 25 and 26 of the MEC 18. DO NOT connect the fan directly to the control. Wire the ABB ACS320 series variable frequency drive according to Fig. -
Page 13: Integrated With External Pds
4.5 INTEGRATED WITH EXTERNAL PDS Fig. 12 shows how to connect a external Proven Pressure Switch (PDS) to the MEC 18. The external PDS is a backup to the integrated PDS and both must be satisfied by sufficient pressure to release the appliance: •... -
Page 14: Startup And Configuration
3916010 06.16 5. STARTUP AND CONFIGURATION 5.1 GENERAL Prior to startup please review the paragraph below titled Dipswitch settings. Dipwitch settings Prior to setting the system, check to see if the dipswitch settings are as required: • Default factory setting: All OFF •... -
Page 15: Setting Operatuing Pressure
3916010 06.16 5.2 SETTING OPERATION PRESSURE The pressure setting of the MEC 18 must be adjusted to assure proper pressure for the appliance. The display (Fig. 13-C) has two functions. It shows what the pressure set-point is, and it shows what the actual pressure is. -
Page 16: Maintenance And Troubleshooting
3) Check the connection to the PDS and the PDS itself. The neutral connection is shared with 1) Check the amp-draw on terminal Nreg. If it is “0”, the neutral The MEC 18 does not regulate and other devices. connection to the fan is being shared. - Page 17 3916010 06.16...
- Page 18 ENERVEX Inc. P: 770.587.3238 1685 Bluegrass Lakes F: 770.587.4731 Parkway T: 800.255.2923 Alpharetta, GA 30004 info@enervex.com www.enervex.com...
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