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Critical Room Control CRC-FHM User Manual

Fume hood monitor / controller.
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Summary of Contents for Critical Room Control CRC-FHM

  • Page 2: Table Of Contents

    Troubleshooting ........................31 Display is not reading correct air volume or face velocity............. 31 Recalibrating Touch Screen ....................31 Limitation of Warranty and Liability ..................32 Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 3: Introduction

    Introduction The CRC-FHM/C is a comprehensive, flexible, and easy to use fume hood monitor / controller. Even though the CRC-FHM/C’s unique design allows for quick trouble-free set up, we suggest reading this guide before use. This guide will help you take full advantage of the function and performance of the FHM/C.

  • Page 4: Primary Screens

    Easy to understand graphic indication of hood operation Displays current condition of fume hood Emergency Override Button – user can instantly drive the fume hood's exhaust to maximum flow © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 5: Air Flow Alarm

    Red background Alarm icon Muted audible Audible alarm icon alarm icon / mute button Alarm text with instructions to user Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 6: Password Protection

    Password Protection The CRC-FHM/FHC allows the user to change the password needed to access the administrative menu. If the password is set to blank (no characters entered), then users are not prompted to enter a password when accessing the administrative menu.

  • Page 7: Emergency Override

    STANDBY set point and deactivate alarms. Emergency Override The CRC-FHM/FHC emergency override offers the ability to command the hood exhaust to maximum flow from any of the main screens. When the unit is put into Emergency Override, the screen changes to red background and an audible alarm will sound. The control loop output (CRC- FHC only) will automatically drive the exhaust valve fully open.

  • Page 8: Commissioning Info Screen

    Commissioning Info Screen The commissioning info screen is a feature of the CRC-FHM/C that displays key information on the front screen to aid in the setup / startup of the fume hood. It also allows the commissioning agent to change the P and I gains values directly from the front screen.

  • Page 9: Administrative Screens

    I/O Diagnostic: Visual indication and testing of controller inputs and outputs • Factory Reset: Restores original factory settings • Restart: Restarts the controller to access the touch screen calibration Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 10: Exhaust Input Setup

    To “Zero” the exhaust valve’s voltage signal, first shunt the high and low port on the valve’s transducer, then press “Zero Valve” to set the voltage input that corresponds with zero air flow. © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 11: Immediate Valve Control (Ivc™) - Sash Sensing

    “Pop Table” button. • If “Zero Valve” status is displayed, then go through the Valve Zeroing process outlined on previous page before repopulating the valve’s airflow table. © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 12: Sidewall Sensing - Exhaust Input Setup

    – then press "ENTER / SAVE" button STEP 2: Have air balancer read the actual face velocity average from the sash opening – then press "Set FPM" button © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 13: Predictive Sash Valve Control (Psvc™) - Sidewall Sensing

    Press the “Set Stop Position” button. To configure PSVC™ - Open sash to stop position, wait until hood is maintaining correct face velocity, then press the “Set Stop Position” button. © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 14: Constant Volume - General

    To “Zero” the exhaust valve’s voltage signal, first shunt the high and low port on the valve’s transducer, then press “Zero Valve” to set the voltage input that corresponds with zero air flow. © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 15: Sash Setup

    Enter the total area in sqft. of the sash opening (width x height). Do not include bypass area. Enter the total area in sqft. for just the bypass area © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 16: Combination Sash - Sash Setup

    Start "Calib." Button. Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 17: Set Point / Control Setup

    CFM entered is maintained. When configured to display face velocity on the front screen, the CRC-FHM/C will display "Minimum Flow 100+ FPM" if controlling the exhaust valve to the minimum CFM causes the face velocity to exceed set point (i.e. controlling hood to maintain 300 cfm when the sash is fully closed).

  • Page 18: Alarm Setup

    (Sec)." field. The audible alarm can be muted by the user by clicking on the "Sash Alarm" button. The CFM Alarm feature is used when the CRC-FHM/C is using a sidewall sensor to monitor face velocity instead of a sash sensor.

  • Page 19: Energy Saver Delay

    32. An MS/TP EIA-485 network should have no T connections. A termination of 20ohms +-5% should be connected at each of the two ends of the segment medium. No other terminations should be used at intermediate nodes. Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...
  • Page 20 Token: This number increases with when this unit receives and passes a token. • Framing Errors or Break Errors: If this number is increasing, then it usually means that there is noise on the trunk Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...
  • Page 21 Read 0 = no alarm, 255 (FF) = alarm Audible Alarm Read / Write 0 = no alarm, 255 (FF) = alarm - Write 0 to mute Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 22: General Setup Screen (Password, Hood #, Etc.)

    “Emergency Override” or change the mode back into “In Use”. NOTE: The FHM / FHC will still use the minimum flow rate for its flow rate display even while in Decommission Mode. © 2016 CRITICAL ROOM CONTROL Fume Hood Monitor and Controller – User Guide...

  • Page 23: Commissioning Task List - Sash Sensing

    FHM/C's Network Setup Screen - enter Commissioning agent / air balancer correct values (optional) FHM/C's General Setup Screen - enter Commissioning agent / air balancer correct values (optional) Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 24: Commissioning Task List - Sidewall Sensing

    FHM/C's Network Setup Screen - enter Commissioning agent / air balancer correct values (optional) FHM/C's General Setup Screen - enter Commissioning agent / air balancer correct values (optional) Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 25: Diagnostic Screen

    Diagnostic Screen The diagnostic screen allows the installer to easily troubleshoot connections to the CRC-FHM / FHC device. This screen visually shows the incoming signal for all analog and digital inputs, and allows the user to set individual Analog outputs or relays. The diagnostic screen also displays total controller run time.

  • Page 26: Wiring / Device Connection Overview

    (damper, VFD, etc) Constant Volume Sensing Occupancy 24VAC Sensor CRC-FHM/C CRC-FHM/C BACnet LCD Screen Controller (RS485) DPT on CFM Sum to CRC - CLV Exhaust Control (damper, VFD, etc) Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 27: Installation

    Do not share common supply power and I/O between different manufacturers. Mounting / Installation The CRC-FHM/FHC is a two-part system designed to reduce installation costs and allow for surface mounting of LCD monitor. The two components to be installed are the monitor and the controller (CRC-FHM/FHC and CRC-FHM/CONT).
  • Page 28 Mounting of the Fume Hood Monitor (CRC-FHM/FHC) The CRC-FHM/FHC and mounting bracket is designed to be mounted directly to the fume hood pillar or a standard electrical box. The electrical box should be mounted flush relative to the face of the fume hood pillar. The mounting bracket (MB) should be attached to the electrical box. The monitor (FHM/FHC) LCD enclosure is then slid across the mounting bracket and fastened from the side.
  • Page 29 The centerline of the sensor should be even with the bottom of the sash at the full open position. • The Sidewall Velocity Sensor should be mounted in a non-turbulent location. Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 30: Controller I/O

    * Must also be connected to either "5v" or "V+" – see sensor specs for details Power and Communication: 24V IN  24VAC 24V IN  RS 485 Network connection Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 31: Troubleshooting

    – and that the outgoing signals are being read by attached devices (example: vary analog output 1 and confirm that the airflow valve is opening / closing). Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

  • Page 32: Limitation Of Warranty And Liability

    Seller. This LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its terms waived, except by writing signed by an Officer of Seller. Fume Hood Monitor and Controller – User Guide © 2016 CRITICAL ROOM CONTROL...

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