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Installation and operation manual

Job name: _____________________________________

Installer:  ______________________________________

Installation date:  _______________________________

USA

CAN

Product information  

Chapters 1 + 2

Mechanical installation  

Chapter 3

Electrical installation  

Chapter 4

Start up and configuration  

Chapter 5

Maintenance and troubleshooting  

Chapter 6

READ AND SAVE THESE INSTRUCTIONS!

MEC24 modulating fan control

Distributor contact information:

ENERVEX Inc. • T: 800.255.2923

[email protected] • www.enervex.com

3120066 MEC24 US 20210325

Summary of Contents for MEC24

Page 1: ..._______ USA CAN Product information Chapters 1 2 Mechanical installation Chapter 3 Electrical installation Chapter 4 Start up and configuration Chapter 5 Maintenance and troubleshooting Chapter 6 READ...

Page 2: ...uch as those published by the National Fire Protection Association NFPA and the American Society for Heating Refrig eration and Air Conditioning Engineers ASHRAE and the local code authorities 5 This...

Page 3: ...ervention de maintenance ou de nettoyage de l appareil le mettre hors tension au niveau du panneau de service et verrouiller le panneau de service afin d emp cher toute mise sous tension accidentelle...

Page 4: ...ired the control can be interlocked with an appliance When the appliance is activated the control sends maximum voltage to the fan or VFD Once the specified pressure is achieved the con trol releases...

Page 5: ...ions A in mm 6 88 175 B in mm 8 48 215 C in mm 4 33 110 Weight lbs kg 3 0 1 5 IP Rating NEMA 4X IP54 Ashcroft XTP sensor Power supply VDC 14 36 Amperage mA 6 Output VDC 0 10 Operating temperature F C...

Page 6: ...annot be mounted inside an airtight enclosure It uses the boiler room pressure atmos pheric pressure as reference pressure 3 2 Mounting of control The control can be mounted directly on a wall or simi...

Page 7: ...Pressure Probe Fig 4 3 4 Mounting of stack probe The probe Fig 2a on page 5 is inserted into the chimney or vent at the point where the draft should be kept constant This could be at the appliance out...

Page 8: ...rom Appliance Boiler 2 thermostat Optocoupler 10 230 VAC DC 17 Voltage Input from Appliance Boiler2 thermostat Optocoupler 10 230 VAC DC Terminal Use 18 Burner 2 relay contact Normally Open max 230 VA...

Page 9: ...e start signal from the burner to terminals 14 and 15 y To connect the chimney fan If using a 1x120V chimney fan connect it to terminals 4 5 and 6 Refer to the fan s Installation Manual If using a 3 p...

Page 10: ...e boiler start signal to terminals 12 and 13 The start signal to the burner is now activated by terminal 14 Connect Neutral to terminal 15 y To connect the chimney fan If using a 1x120V chimney fan co...

Page 11: ...er to terminals 14 and 15 y To connect the chimney fan If using a 1x120V chimney fan connect it to terminals 4 5 and 6 Refer to the fan s Installation Manual If using a 3 phase fan and VFD connect the...

Page 12: ...drive VFD connect the VFD to terminals 20 and 21 of the MEC24 DO NOT connect the fan directly to the control Wire the ABB ACS355 series variable frequency drive according to fig 10 Fig 10 Wire the En...

Page 13: ...DS to the MEC24 The external PDS is a backup to the integrated PDS and both must be satisfied by sufficient draft to release the appliance y Remove the factory installed jumper over terminals 30 and 3...

Page 14: ...ust will be pulled through the appliance The chimney is always primed and there is no real need for pre and post purge functions The energy consumption in this mode is minimal In intermittent mode the...

Page 15: ...XTP 0 1024 The value between 0 1024 is a fraction of 10V meaning that a value of 423 equals 4 13 V Menu 365 Firmware upgrade The MEC24 can be firmware upgraded using a USB memory stick Insert the USB...

Page 16: ...troduction of excessive dilution air 5 XTP sensor not responding correctly A2 Power Fault Indicates there has been a power fault A3 Exhaust Error Indicates a disconnected signal from the XTP Sensor on...

Page 17: ...HAUST Ti Integral gain 0 30 8 167 Sampling rate SAMPLING RATE Set the sampling rate for the PID Loop 1 10 10 168 Pressure type PRESSURE MODE Positive or negative pressure in the stack Positive or Nega...

Page 18: ...on the USB flash drive YES NO NO 364 Load config file LOAD CONFIG FILE Selecting YES will download the current configuration to the USB flash drive YES NO NO 365 Upgrade firmware UPGRADE FIRM WARE Th...

Page 19: ...19 3120066 MEC24 US 20210325...

Page 20: ...Distributor in USA Canada ENERVEX Inc 1685 Bluegrass Lake Parkway Alpharetta GA 30004 P 770 587 3238 F 770 587 4731 T 800 255 2923 info enervex com www enervex com www exodraft com...

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