Accurex Temperature Interlock Installation, Operation And Maintenance Manual
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Table of ContentsProduct Specification . . . . . . . . . . . . . . . . . . . . . . . . 1General Safety Information . . . . . . . . . . . . . . . . . . . . 1General Description . . . . . . . . . . . . . . . . . . . . . . . . . . 2Receiving and Handling. . . . . . . . . . . . . . . . . . . . . . . 3InstallationControl Box Mounting . . . . . . . . . . . . . . . . . . . . . 3Thermostat(s) - Hood Mounting . . . . . . . . . . . . 3-4Thermostat(s) - Duct Collar Mounting . . . . . . . . . 4Electrical ConnectionsFan Starters Provided by Others . . . . . . . . . . . . . 5All Exhaust/Supply Fan Starters Provided inMake-Up Air Unit (MUA) . . . . . . . . . . . . . . . . . . 6Thermostat Connections . . . . . . . . . . . . . . . . . . . 6Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Control Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . 8Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Frequently Asked Questions . . . . . . . . . . . . . . . . . . 11Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . 11Codes and Standards Compliance . . . . . . . . . . . . . 11Our Commitment . . . . . . . . . . . . . . . . . . . . . . . . . . . 12General DescriptionDescriptionThe temperature interlock is designed to automaticallystart kitchen hood exhaust fans and keep themrunning while heat is being generated from the cookingappliances. Hood systems should always be manuallystarted before equipment is turned on. If the operatorfails to turn the fans on, the interlock will turn the fanson once enough heat is detected. The package consistsof a time delay relay, adjustable thermostat, junctionbox, and a UL Listed, liquid-tight fitting. The relay canbe contained in a stand alone box or can be added to apre-engineered fan control center.PurposeTo meet IMC, an interlock between exhaust fans andcooking equipment must be present for all Type I hoodsystems. This product will utilize a thermostat in theexhaust duct collar or in the capture area of the hoodto detect heat generated from cooking operations andautomatically activate the exhaust fans if not alreadyturned on.Product ApplicationThe temperature interlock can be used with Type I andType II hoods. It is not to be used in conjunction withexhaust fire dampers. Accurex recommends using oneinterlock per hood system (activates all fans linked tosystems simultaneously).Performance GoalsTo meet IMC, the fans need to activate not more than15 minutes after the first appliance served by that hoodhas been turned on. Ambient kitchen temperatures arenot the same in all commercial kitchens. Therefore, setpoint adjustments may be necessary on the thermostatto make sure the system meets this 15 minuterequirement.Temperature Interlock2 |
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