Accurex Vari-Flow Installation, Operation And Maintenance Manual

Air management system

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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.
HOOD
LIGHTS
General Safety Information
Only qualified personnel should install this unit.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards.
Other considerations may be required if high winds
or seismic activity are present. If more information
is needed, contact a licensed professional engineer
before moving forward.
1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC), the
National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code
(CEC) in Canada.
2. Do not allow the power cable to kink or come
in contact with oil, grease, hot surfaces,
or chemicals. Replace cord immediately if
damaged.
3. Verify that the power source is compatible with
the equipment.
FAN
ON/OFF
FAN
100%
SYSTEM
FAULT
472618
DANGER
Always disconnect power before working on or
near a unit. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
CAUTION
When servicing the unit, variable frequency drives
(VFD's) may be hot enough to cause pain or injury.
Allow motor to cool before servicing.
Vari-Flow Air Management System
Document 473593
Vari-Flow Air
Management System
1

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Summary of Contents for Accurex Vari-Flow

  • Page 1 2. Do not allow the power cable to kink or come in contact with oil, grease, hot surfaces, or chemicals. Replace cord immediately if damaged. 3. Verify that the power source is compatible with the equipment. Vari-Flow Air Management System...
  • Page 2: Table Of Contents

    The user assumes responsibility of the unit and accessories while in storage. The manufacturer will not be responsible for damage during storage. These suggestions are provided solely as a convenience to the user. Vari-Flow Air Management System...
  • Page 3: Control Box Mounting

    Lock Washer the hood surface. Lock Washer Octagon Cover Octagon Octagon Cover Extension Octagon Extension Exhaust Area Exhaust Area Sensor Install Cut Out Area Vari-Flow Air Management System Sensor Install Cut Out Area Supply Area (optional) OCTAGON EXTENSION RING OVER...
  • Page 4: Pneumatic Static Pressure Kit

    field. One-inch conduit needed to allow smaller connector to fit through. Keypad, screws and wire harness supplied by the factory 25 ft. cable assembly supplied by the factory Two-gang switch box supplied by the factory Vari-Flow Air Management System...
  • Page 5: Wiring

    GGH 20/VAV Fan Mode 12 - AI5 Interlock Connection + VDC AO3 - 76 0 VDC - Fan Auto 1 - AICOM Vari-Flow Air Management System 5 VDC - Fan OFF DI4 - 26 10 VDC - Fan On for Dry...
  • Page 6: Wiring Diagrams

    This is an example of a wiring diagram for a base system. Controlling up to 3 exhaust fans, 1 supply fan and 4 temperature sensors. To see your job specific drawing, look on the inside panel of the Vari-Flow cabinet.
  • Page 7: Wiring Diagrams

    This is an example of a wiring diagram for an expanded system, controlling up to 5 exhaust fans, 8 temperature sensors and 1 supply fan. For a job specific drawing, look on the inside panel of the Vari-Flow cabinet. Vari-Flow Air Management System...
  • Page 8: Connection Checklist

     N ormally open set of contacts to be used to shunt appliances. Grease Grabber H 2 O Interface (if used)  G rease Grabber H2O / Vari-Flow interface (terminals V1, VC)  K eypad interface (terminals 1, 3, 5, 7, 10, 13 to...
  • Page 9 FX15 Vari-Flow Controller Display Accounts Menu Descriptors/Value Default Use Log In Password is 3637 Events The events menu is empty unless a system fault has occurred. If it has, then the system fault will be listed in the events menu.
  • Page 10 The maximum output control limit for the MUA VFD or damper set. Must be set to a value that ensures proper design full flow CFM. (Adjustable from 0% to 100%) * To see values, you need to log in. Vari-Flow Air Management System...
  • Page 11 Indicates the minimum fan speed to achieve positive hood capture for EF4 EF5 Min 0-100% Indicates the minimum fan speed to achieve positive hood capture for EF5 * To see values, you need to log in. Vari-Flow Air Management System...
  • Page 12 No / Yes Indicates if EF4 is connected Fan5 Connected No / Yes Indicates if EF5 is connected Grease Grabber H2O with Vari-Flow Settings GGH2O/ Descriptors/Value Default Use Vari-Flow Settings GGH2O Force Fan Off No / Yes If yes the exhaust fan(s) are forced off to prevent water from being drawn into the exhaust duct during the wash cycle.
  • Page 13: Sequence Of Operations

    SEQUENCE OF OPERATION – VARI-FLOW MUA/SF/OA Damper Pressure Control System Start Stop Hood Full Speed Hood Running Hood Switch Temperature Signal Received Control Enabled Hood VFD Set to Full Speed Pressure or Tracking? Temperature Interlock TRAK PRES 15 minute timer /...
  • Page 14: Daily Operations

    Daily Operations of Vari-Flow System The following section details the buttons on the Low Temperature Set Point (90˚F default) Vari-Flow keypad and their function as it relates to the Record the kitchen ambient temperature ________ daily operation of the system.
  • Page 15: Troubleshooting

    Fan FLA not set in the VFD Check the VFD overload settings (PAR E2-01) parameters VFD over current Check fan rotation Supply VFD Fault Fan FLA not set in the VFD Check the VFD overload settings (PAR E2-01) parameters Vari-Flow Air Management System...
  • Page 16: Warranty

    As a result of our commitment to continuous improvement, Accurex reserves the right to change specifications without notice. Product warranties can be found online at accurex.com, either on the specific product page or in the Warranty section of the website at Accurex.com/Resources/Warranty.

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