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I. REVISIONS
<br /> DESCRRIP I N DATE:
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<br /> DEMAND CONTROL VENTILATION HOOD CONTROL PANEL SPECIFICATIONS:
<br /> - CONTROLS SHALL BE LISTED BY ETL CUL 508A) AND SHALL COMPLY 1./ITH DEMAND VENTILATION SYSTEM _
<br /> TURNDOWN REQUIREMENTS OUTLINED IN IECC 403.2,E C2015). �'
<br /> DUCT TEMPERATURE SENSOR.
<br /> - THE CONTROL ENCLOSURE SHALL BE NEMA 1 RATED AND LISTED FOR INSTALLATION INSIDE OF THE
<br /> EXHAUST HOOD UTILITY CABINET. THE CONTROL ENCLOSURE MAY BE CONSTRUCTED OF STAINLESS STEEL
<br /> OR PAINTED STEEL.
<br /> I .�
<br /> - TEMPERATURE PROBE(S) LOCATED IN THE EXHAUST DUCT RISER(S) SHALL BE CONSTRUCTED OF /I \. � CL
<br /> STAINLESS STEEL. r
<br /> - A DIGITAL CONTROLLER SHALL BE PROVIDED TO ACTIVATE THE HOOD EXHAUST FANS DYNAMICALLY BASED
<br /> -
<br /> ON A FIXED DIFFERENTIAL BETWEEN THE AMBIENT AND DUCT TEMPERATURES SENSORS. THIS FUNCTION I <S'1:;�
<br /> SHALL MEET THE REQUIREMENTS OF IMC 507.1.1. I
<br /> - A DIGITAL CONTROLLER SHALL PROVIDE ADJUSTABLE HYSTERESIS SETTINGS TO PREVENT CYCLING OF THE `;;, Ql CO
<br /> FANS AFTER THE COOKING APPLIANCES HAVE BEEN TURNED OFF AND/OR THE HEAT IN THE EXHAUST -� USYSTEM IS REDUCED. CONTROL PANEL.- A DIGITAL CONTROLLER SHALL PROVIDE AN ADJUSTABLE MINIMUM FAN RUN-TIME SETTING TO PREVENT FAN TEMPERATUR • Phb0
<br /> ' LCD 0 -P OD
<br /> SENSOR. INTERFACE CYCLING. (1) _C Cf
<br /> TYPICAL HOOD CONTROL PANEL INSTALLATION > _O)
<br /> - VARIABLE FREQUENCY DRIVES (VFDS) SHALL BE PROVIDED FOR FANS AS REQUIRED. THE DIGITAL QJ Q
<br /> CONTROLLER SHALL MODULATE THE VFDS BETWEEN A MINIMUM SETPOINT AND A MAXIMUM SETPOINT ON SEQUENCE OF OPERATIONS
<br /> DEMAND, THE DUCT TEMPERATURE SENSOR INPUT(S) TO THE DIGITAL CONTROLLER SHALL BE USED TO THE HOOD CONTROL PANEL IS CAPABLE OF ❑PERATING IN ONE OR MORE OF THE FOLLOWING STATES AT ANY = 3
<br /> CALCULATE THE SPEED REFERENCE SIGNAL, GIVEN TIME,
<br /> - AUTOMATIC.THE SYSTEM OPERATES BASED ON THE DIFFERENTIAL BETWEEN ROOM TEMPERATURE AND d v
<br /> - THE VFD SPEED RANGE OF OPERATION SHALL BE FROM OX TO 100% FOR THE SYSTEM, WITH THE ACTUAL THE TEMPERATURE AT THE HOOD CAVITY OR EXHAUST DUCT COLLAR. FANS ACTIVATE AT A _Y (—
<br /> MINIMUM SPEED SET AS REQUIRED TO MEET MINIMUM VENTILATION REQUIREMENTS. CONFIGURABLE TEMPERATURE DIFFERENTIAL THRESHOLD. DEPENDING ON THE JOB CONFIGURATION EACH FAN > d (—
<br /> ZONE CAN BE CONFIGURED AS STATIC OR DYNAMIC. THESE TERMS REFER TO WHETHER A VARIABLE J LLJ
<br /> - AN INTERNAL ALGORITHM TO THE DIGITAL CONTROLLER SHALL MODULATE SUPPLY FAN VFD SPEED MOTOR (SUCH AS EC MOTORS OR VFD DRI✓EN MOTORS) MODULATE WITH TEMPERATURE. IF THE PANEL IS d OL
<br /> PROPORTIONAL TO ALL EXHAUST FANS THAT ARE LOCATED IN THE SAME FAN GROUP AS THE SUPPLY FAN. EQUIPPED WITH VARIABLE SPEED FANS AND THE ZONE IS DEFINED AS 'DYNAMIC', THESE WILL MODULATE S ,.-I J
<br /> WITHIN A USER-DEFINED RANGE BASED ON THE TEMPERATURE DIFFERENTIAL. PANELS EQUIPPED WITH 4--1 KY >
<br /> - THE SYSTEM SHALL OPERATE IN PREP MODE DURING LIGHT COOKING LOAD OR COOL DOWN MODE WHEN VARIABLE SPEED FANS AND A FAN ZONE DEFINED AS 'STATIC', FANS WILL RUN AT A SET SPEED OJ .--1
<br /> SUFFICIENT HEAT REMAINS UNDERNEATH THE HOOD SYSTEM AFTER COOKING OPERATIONS HAVE CALCULATED FOR THE DRIVE. DEMAND CONTROL VENTILATION SYSTEMS ARE CAPABLE OF MODULATING P21 (LJ LLB
<br /> COMPLETED. OPERATION DURING EITHER OF THESE PERIODS WILL DISABLE THE SUPPLY FANS AND PROVIDE EXHAUST AND MAKE UP AIR FAN SPEEDS PER THE REQUIREMENTS OUTLINED IN IECC 403.2.8.
<br /> AN EXHAUST FAN SPEED THAT IS EQUAL TO THE MINIMUM VENTILATION REQUIREMENT.
<br /> - MANUAI,THE SYSTEM OPERATES BASED ON HUMAN INPUT FROM AN HMI. DATE: 10/1/2020
<br /> - A DIGITAL CONTROLLER SHALL DISABLE THE SUPPLY FANGS), ACTIVATE THE EXHAUST FAN(S), ACTIVATE
<br /> THE APPLIANCE SHUNT TRIP, AND DISABLE AN ELECTRIC GAS VALVE AUTOMATICALLY WHEN FIRE CONDITION - SCHEDULE,A WEEKLY SCHEDULE CAN BE SET TO RUN FANS FOR A SPECIFIED PERIOD THROUGHOUT THE DWG.#
<br /> IS DETECTED ON A COVERED HOOD. DAY. THERE ARE THREE OCCUPIED TIMES PER DAY TO ALLOW FOR THE USER TO SET UP A TIME THAT IS 4546747
<br /> SUITABLE TO THEIR NEEDS. ANY TIME THAT IS WITHIN THE DEFINED OCCUPIED TIME, THE SYSTEM WILL RUN
<br /> - A DIGITAL CONTROLLER SHALL ALLOW FOR EXTERNAL BMS FAN CONTROL VIA DRY CONTACT (EXTERNAL AT MODULATION MODE AND FOLLOW THE FAN PROCEDURE ALGORITHM BASED ON TEMPERATURE DURING THIS
<br /> CONTROL SHALL NOT OVERRIDE FAN OPERATION LOGIC AS REQUIRED BY CODE), TIME. DURING UNOCCUPIED TIME, THE SYSTEM WILL HAVE AN EXTRA OFFSET TO PREVENT UNINTENDED DRAW RTB - 85
<br /> ACTIVATION OF THE SYSTEM DURING A TIME WHERE THE SYSTEM IS NOT BEING OCCUPIED.
<br /> - AN LCD INTERFACE SHALL BE PROVIDED WITH THE FOLLOWING FEATURES, SCALE:
<br /> A. ON/OFF PUSH BUTTON FAN & LIGHT SWITCH ACTIVATION. - OTHER, THE SYSTEM OPERATES BASED ON THE INPUT FROM AN EXTERNAL SOURCE (DDC, BMS OR 3/4" = 1'-0"
<br /> B. INTEGRATED GAS VALVE RESET FOR ELECTRONIC GAS VALVES (NO RESET RELAY REQUIRED). HARD-WIRED INTERLOCK).
<br /> C. VFD FAULT DISPLAY WITH AUDIBLE & VISUAL ALARM NOTIFICATION.
<br /> - D. DUCT TEMPERATURE SENSOR FAILURE DETECTION WITH AUDIBLE & VISUAL ALARM NOTIFICATION. - FIRE, UPON ACTIVATION OF THE HOOD FIRE SUPPRESSION SYSTEM, THE EXHAUST FAN WILL COME ON OR MASTER DRAWING
<br /> E. MIS-WIRED DUCT TEMPERATURE SENSOR DETECTION WITH AUDIBLE & VISUAL ALARM NOTIFICATION. CONTINUE TO TO RUN, THE HOOD MAKEUP AIR WILL SHUTDOWN, AND A SIGNAL WILL BE SENT FOR
<br /> F. A SINGLE LOW VOLTAGE CAT-5 RJ45 WIRING CONNECTION. ACTIVATING THE SHUNT TRIP BREAKER PROVIDED BY THE ELECTRICIAN. FUEL GAS WILL SHUT OFF VIA A
<br /> G. AN ENERGY SAVINGS INDICATOR THAT UTILIZES MEASURED KWH FROM THE VFDS. MECHANICAL/ELECTRICAL GAS VALVE ACTUATED BY THE HOOD FIRE SUPPRESSION SYSTEM.
<br /> SHEET NO.
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