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EngA Base User Manual

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User Manual
Manual Revision 1.01
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These instructions are intended as an aid to qualified, licensed installers and service personnel for proper
installation, adjustment and operation of this unit. Read and understand these instructions thoroughly
before attempting installation or operation. Failure to follow these instructions may result in improper
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installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, carbon monoxide
poisoning, explosion, personal injury or property damage.
www.engineeredair.com
IOM73
February 2021

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  • Page 1 User Manual Manual Revision 1.01 These instructions are intended as an aid to qualified, licensed installers and service personnel for proper installation, adjustment and operation of this unit. Read and understand these instructions thoroughly before attempting installation or operation. Failure to follow these instructions may result in improper installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, carbon monoxide poisoning, explosion, personal injury or property damage.
  • Page 2 Read this manual thoroughly before operating or Canadian Head Office and Factory servicing this unit. 1401 Hastings Cres. SE The Engineered Air base and CD-XM expansion Calgary, Alberta, Canada T2G 4C8 module have been certified by Intertek (ETL) as a...
  • Page 3 Engineered Air. CAUTION: The base is specifically programmed for this specific appliance. Do not replace with another controller without confirming its program suitability with Engineered Air.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS OVERVIEW ..............5 HARDWARE INFORMATION ........5 COMMUNICATION ............ 5 COMPUTER CONNECTION ........5 ALARM RESET ............6 LED LIGHTS............6 SEVEN SEGMENT DISPLAY ........6 CD-XM EXPANSION MODULE ....... 8 PRESSURE PORTS ..........8 TERMINAL DESIGNATIONS ........9 APPLIANCE TYPES ...........

  • Page 5: Overview

    Single and variable speed fan control.  display interface connect using a Cat.5 Ethernet Analog heating and cooling outputs.  cable to the base, near the top right of the Damper and economizer control.  controller. Tablets may require a USB to Ethernet Alarm annunciation.

  • Page 6: Alarm Reset

    Click OK to accept, and then open a web browser ALARM RESET and type in the following address to gain access to Alarms may be reset either from the laptop the display interface: computer alarm screen or the red reset button near 192.168.0.10:8080/webvisu.htm...
  • Page 7 Standard Version Humidifier Version IOM67 February 2021 R0...

  • Page 8: Cd-Xm Expansion Module

    CD-XM EXPANSION MODULE A TRIAC driver slave connected via Modbus communication to the base, this module controls the combustion motor speed on DJ indirect fired heaters. A 3 wire feedback signal is returned to the module to confirm the blower speed.

  • Page 9: Terminal Designations

    VFD Feedback Speed TERMINAL DESIGNATIONS W+/- Modulating heating thermostat AA1,2 AI Ambient / Outside temperature Terminals indicated change on the humidifier DA1,2 AI Discharge temperature version. Modulating cooling thermostat High Speed Enable Power Supply Enable Cooling Ground Occupied / unoccupied mode...

  • Page 10: Appliance Types

    (SSOV). Once the pilot flame has proven and the main flame is established, the base will then disable the pilot valve. The burner is allowed to operate from IOM67...

  • Page 11: Sh(X) Humidifier

    SH(X) HUMIDIFIER SH and SHX series gas fired humidifiers are controllable using the humidifier version of the base controller. SHX models use a second fill valve for the side tank. On a call for humidification the tank first fills with water, then the burner gas-fired heat is enabled to produce steam.

  • Page 12: Alarms

    ALARMS Name Description General Alarms The low limit setpoint is the lower of 40°F or 15°F below the discharge air Low limit setpoint. 4 minute bypass time. VFD Feedback is greater than the minimum VFD speed for more than 30s Air Proving Fault with the supply fan output off.
  • Page 13 DG Alarms Air Actuator Out of Air Actuator Feedback Is greater or less then the demand. Tolerances and range timing vary depending on mode of operation. Combustion blower air switch input (CB) has no power for 60 seconds Open Air Proving after commanding the combustion blower on / Combustion blower air switch input has no power for 2 seconds during main flame.

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