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HomeMy WebLinkAboutM7-03-MECHANICAL-SCHEDULES-Rev.0HVAC SEQUENCES OF OPERATION HVAC SEQUENCES OF OPERATION HOTEL CARMICHAEL AT CITY AHU-1 (KITCHEN AHU) A. BUILDING MANAGEMENT SYSTEM INTERFACE: THE BUILDING MANAGEMENT SYSTEM (BMS) SHALL SEND THE CONTROLLER OCCUPIED BYPASS, MORNING WARM-UP/PRE-COOL, UNOCCUPIED / OCCUPIED, AND HEAT/COOL MODES. THE BMS SHALL ALSO SEND THE DISCHARGE AIR TEMPERATURE SET POINT AND THE DUCT STATIC PRESSURE SET POINT. IF A BMS IS NOT PRESENT, OR COMMUNICATION IS LOST WITH THE BMS, THE CONTROLLER SHALL OPERATE USING DEFAULT MODES AND SET POINTS. B. OCCUPIED MODE: THE SUPPLY FAN SHALL RUN CONTINUOUSLY AND THE OUTSIDE AIR DAMPER SHALL OPEN AS REQUIRED TO MAINTAIN THE MINIMUM VENTILATION REQUIREMENTS BASED ON THE NUMBER OF EXHAUST HOODS ENERGIZED (SEE HOOD CONTROL BELOW). THE DX COOLING COIL AND GAS HEAT EXCHANGER SHALL MODULATE AS NECESSARY TO MAINTAIN THE SPACE TEMPERATURE SET POINT. IF ECONOMIZING IS ENABLED, THE OUTSIDE/RETURN/EXHAUST AIR DAMPERS SHALL ALSO MODULATE TO MAINTAIN THE SPACE TEMPERATURE SET POINT. HEATING SET POINT SHALL BE 68°F AND COOLING SET POINT SHALL BE 72°F. ROOM SENSOR SHALL MONITOR SPACE TEMPERATURE. C. UNOCCUPIED MODE: WHEN THE SPACE TEMPERATURE IS BELOW THE UNOCCUPIED HEATING SET POINT OF 65`F, THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED AND THE GAS HEAT EXCHANGER SHALL ENERGIZE. WHEN THE SPACE TEMPERATURE RISES ABOVE THE UNOCCUPIED HEATING SET POINT OF 65°F PLUS THE UNOCCUPIED DIFFERENTIAL OF 4`F THE SUPPLY FAN SHALL STOP AND THE GAS HEAT EXCHANGER SHALL DE -ENERGIZE. WHEN THE SPACE TEMPERATURE IS ABOVE THE UNOCCUPIED COOLING SET POINT OF 787 THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL OPEN IF ECONOMIZING IS ENABLED AND REMAIN CLOSED IF ECONOMIZING IS DISABLED AND THE DX COOLING COIL WILL ENERGIZE. WHEN THE SPACE TEMPERATURE FALLS BELOW THE UNOCCUPIED COOLING SET POINT OF 787 MINUS THE LOW OCCUPANCY DIFFERENTIAL OF 4`F THE SUPPLY FAN SHALL STOP, THE DX COOLING COIL SHALL DE -ENERGIZE AND THE OUTSIDE AIR DAMPER SHALL CLOSE. D. OPTIMAL START: THE BMS SHALL MONITOR THE SCHEDULED OCCUPIED TIME, OCCUPIED MODE SPACE SET POINTS AND SPACE TEMPERATURE TO CALCULATE WHEN THE OPTIMAL START OCCURS. E. MORNING WARM-UP MODE: DURING OPTIMAL START, IF THE AVERAGE SPACE TEMPERATURE IS BELOW THE OCCUPIED HEATING SET POINT, A MORNING WARM-UP MODE SHALL BE ACTIVATED. WHEN MORNING WARM-UP IS INITIATED THE UNIT SHALL ENABLE THE HEATING AND SUPPLY FAN. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE SPACE TEMPERATURE REACHES THE OCCUPIED HEATING SET POINT (ADJ.), THE UNIT SHALL TRANSITION TO OCCUPIED MODE. F. PRE -COOL MODE: DURING OPTIMAL START, IF THE AVERAGE SPACE TEMPERATURE IS ABOVE THE OCCUPIED COOLING SET POINT, PRE -COOL MODE SHALL BE ACTIVATED. WHEN PRE -COOL IS INITIATED THE UNIT SHALL ENABLE THE FAN AND COOLING OR ECONOMIZER. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED, UNLESS ECONOMIZING. WHEN THE SPACE TEMPERATURE REACHES THE OCCUPIED COOLING SET POINT (ADJ.), THE UNIT SHALL TRANSITION TO OCCUPIED MODE. G. OPTIMAL STOP: THE BMS SHALL MONITOR THE SCHEDULED UNOCCUPIED TIME, OCCUPIED SET POINTS AND SPACE TEMPERATURE TO CALCULATE WHEN THE OPTIMAL STOP OCCURS. WHEN THE OPTIMAL STOP MODE IS ACTIVE THE UNIT CONTROLLER SHALL MAINTAIN THE SPACE TEMPERATURE TO THE SPACE TEMPERATURE OFFSET SET POINT. OUTSIDE AIR DAMPER SHALL REMAIN ENABLED TO PROVIDE MINIMUM VENTILATION. H. OCCUPIED BYPASS: THE BMS SHALL MONITOR THE STATUS OF THE "ON" AND "CANCEL" BUTTONS OF THE SPACE TEMPERATURE SENSORS. WHEN AN OCCUPIED BYPASS REQUEST IS RECEIVED FROM A SPACE SENSOR, THE UNIT SHALL TRANSITION FROM ITS CURRENT OCCUPANCY MODE TO OCCUPIED BYPASS MODE AND THE UNIT SHALL MAINTAIN THE SPACE TEMPERATURE TO THE OCCUPIED SET POINTS (ADJ.). I. SUPPLY AIR TEMPERATURE CONTROL: THE SUPPLY AIR TEMPERATURE SET POINT SHALL BE RESET TO THE OPTIMAL SET POINT COMMUNICATED BY THE BMS. THE BMS SHALL RESET THE SUPPLY AIR TEMPERATURE SET POINT BASED ON THE CURRENT OUTSIDE AIR TEMPERATURE, BUT SHALL OVERRIDE THIS RESET FUNCTION AND RETURN THE SUPPLY AIR TEMPERATURE SET POINT TO 54 'F IF THE ZONE BEGINS TO OVERHEAT. ALSO, THE BMS SHALL OVERRIDE THIS RESET FUNCTION WHENEVER OUTDOOR DEW POINT IS HIGHER THAN 60 'F OR INDOOR HUMIDITY IS HIGHER THAN 60% RH. IF THE SUPPLY AIR TEMPERATURE DROPS BELOW THE MINIMUM LIMIT, A LOW TEMPERATURE ALARM SHALL BE ANNUNCIATED AND THE UNIT SHALL SHUT DOWN. IF THE SUPPLY AIR TEMPERATURE RISES ABOVE THE MAXIMUM LIMIT, A HIGH TEMPERATURE ALARM SHALL BE ANNUNCIATED. J. ECONOMIZER: ECONOMIZING SHALL BE DISABLED WHEN THE OUTDOOR AIR TEMPERATURE IS GREATER THAN THE ECONOMIZER ENABLE SET POINT OF 65 `F PLUS 5 'F. ECONOMIZING SHALL BE ENABLED WHEN THE OUTDOOR AIR TEMPERATURE IS BELOW THE ECONOMIZING ENABLE SET POINT. WHEN ECONOMIZING IS ENABLED THE OUTSIDE AIR DAMPER SHALL MODULATE BETWEEN THE MINIMUM DAMPER POSITION AND 100% OPEN TO MAINTAIN THE DISCHARGE COOLING SET POINT OF 55 OF. IF THE OUTDOOR AIR TEMPERATURE SENSOR HAS FAILED, ECONOMIZING SHALL BE DISABLED AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. L. HOOD CONTROL: 1. THE KITCHEN IS SERVED BY THREE KITCHEN EXHAUST FANS, KEF-1, 2, AND 3. KEF-1 AND 2 SERVE GREASE EXHAUST HOODS AND KEF-3 IS A DISHWASHER EXHAUST FAN THAT WILL OPERATE CONTINUOUSLY. 2. WHEN NEITHER GREASE HOOD EXHAUST FAN (KEF-1, 2) IS ENABLED, THE OUTDOOR AIRFLOW SET POINT SHALL BE AT MINIMUM (500 CFM). WHEN ONE KITCHEN HOOD IS ENABLED, THE OUTDOOR AIRFLOW SET POINT SHALL INCREASE TO A HIGHER SETTING (KEF-1 = 1,700 CFM) OR (KEF-2 = 1,050 CFM). WHEN BOTH KITCHEN HOODS ARE ENABLED, THE OUTDOOR AIRFLOW SET POINT SHALL INCREASE TO A MAXIMUM SETTING (2,250 CFM). 3. THE OUTDOOR AIRFLOW SETTINGS SHALL BE SET AT SYSTEM START-UP AT 100% FAN SPEED AND AT MINIMUM FAN SPEED. CONTROLS CONTRACTOR SHALL ESTABLISH AN OA RESET SCHEDULE TO VARY THE OUTDOOR AIR DAMPER POSITION IN DIRECT RESPONSE TO FAN SPEED TO MAINTAIN PROPER MINIMUM OUTDOOR AIR REQUIREMENTS. M. COOLING MODE: 1. IN COOLING MODE THE UNIT SHALL START AT FULL COOLING DEMAND, WITH THE OA DAMPER AT MINIMUM POSITION, THE FAN AT 100% SPEED AND THE DX COOLING COIL MODULATING TO MAINTAIN 54`F LEAVING AIR TEMPERATURE (LAT). 2. DECREASES IN COOLING DEMAND SHALL DECREASE FAN SPEED FROM FULL SPEED DOWN TO 25% FAN SPEED WITH DX COOLING COIL MAINTAINING A LAT AT 54°F. FURTHER DECREASES IN COOLING DEMAND SHALL BE WITH THE FAN SPEED AT MINIMUM SPEED AND THE DX COOLING COIL MODULATING IN RESPONSE TO SPACE THERMOSTAT. 3. ECONOMIZER COOLING SHALL BE AVAILABLE. ON A CALL FOR COOLING FROM THE SPACE, THE ECONOMIZER SHALL BE UTILIZED TO MAINTAIN 55°F MIXED AIR LOW LIMIT. 4. IF THE SUPPLY FAN FAILS TO PROVE STATUS FOR 30 SECONDS (ADJ.), THE FAN SHALL BE COMMANDED OFF, THE OUTSIDE AIR DAMPER SHALL CLOSE, DX COOLING COIL AND GAS HEAT EXCHANGER WILL BE DISABLED AND AN ALARM WILL BE ANNUNCIATED AT THE BMS. A MANUAL RESET SHALL BE REQUIRED TO RESTART THE FAN. A HARDWIRED, HIGH STATIC PRESSURE CUT-OFF SWITCH SHALL BE ELECTRICALLY INTERLOCKED WITH THE VARIABLE SPEED DRIVE. IF THE HIGH STATIC PRESSURE CUT-OFF SWITCH IS TRIPPED THE FAN SHALL STOP, THE OUTSIDE AIR DAMPER SHALL CLOSE, DX COOLING COIL AND GAS HEAT EXCHANGER WILL BE DISABLED AND AN ALARM WILL BE ANNUNCIATED AT THE BMS. A MANUAL RESET OF THE HIGH STATIC PRESSURE CUT-OFF SWITCH SHALL BE REQUIRED TO RESTART THE FAN. N. HEATING MODE: 1. IN HEATING MODE THE UNIT WILL START IN FULL HEATING DEMAND, WITH THE OA DAMPER AT MINIMUM POSITION, THE FAN AT 100% SPEED AND THE GAS HEAT EXCHANGER MODULATING TO MAINTAIN 100°F LEAVING AIR TEMPERATURE (LAT). 2. DECREASES IN HEATING DEMAND SHALL BE WITH THE FAN AT 100% SPEED AND THE HEAT EXCHANGER MODULATING IN RESPONSE TO SPACE THERMOSTAT. LAT SHALL NOT EXCEED 100`F. 3. ERV-2 SHALL BE INTERLOCKED WITH AHU-1'S HEAT EXCHANGER. ON A CALL FOR HEAT, THE HEAT EXCHANGER SHALL NOT FIRE UNTIL ERV-2'S OPERATION HAS BEEN PROVEN. 0. BUILDING PRESSURE CONTROL: A DIFFERENTIAL PRESSURE TRANSDUCER SHALL ACTIVELY MONITOR THE DIFFERENCE IN PRESSURE BETWEEN THE KITCHEN (INDOORS) AND OUTDOORS. IF THE KITCHEN PRESSURE INCREASES ABOVE THE DESIRED SET POINT, THE AHU CONTROLLER SHALL MODULATE THE EXHAUST DAMPER OPEN AND EXHAUST FAN (EF-4) SPEED TO CONTROL THE PRESSURE AT SET POINT. IF THE PRESSURE DECREASES BELOW THE DESIRED SET POINT, THE CONTROLLER SHALL CLOSE THE EXHAUST DAMPER AND DE -ENERGIZE EXHAUST FAN (EF-4). P. MIXED AIR LOW LIMIT: THE INITIAL DAMPER OPENING RATE SHALL BE LIMITED TO 2% PER MINUTE (ADJ.) UNTIL THE DAMPER HAS REACHED ITS MINIMUM VENTILATION POSITION. THE OUTSIDE AIR DAMPER SHALL MODULATE TO A POSITION LESS THAN THE MINIMUM DAMPER POSITION IF THE MIXED AIR TEMPERATURE DROPS BELOW 50 'F. IF THE MIXED AIR TEMPERATURE SENSOR FAILS AN ALARM SHALL BE ANNUNCIATED AT THE BMS AND THE OUTSIDE AIR DAMPER SHALL RETURN TO THE MINIMUM POSITION. II Q. FILTER STATUS: A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FILTER WHEN THE FAN IS RUNNING. IF THE SWITCH CLOSES DURING NORMAL OPERATION A DIRTY FILTER ALARM SHALL BE ANNUNCIATED AT THE BMS. ENERGY RECOVERY UNIT ERV-1,2,3 AND 4: A. THE UNIT SHALL BE NORMALLY ENABLED/DISABLED BY THE BMS. THE UNIT SHALL RUN 24 HOURS PER DAY, 7 DAYS A WEEK. B. UNIT SHALL BE ENABLED DURING NORMAL OPERATION, AND CAN BE MANUALLY SHUT DOWN THROUGH THE BMS. C. THE UNIT'S FACTORY -PROVIDED CONTROLS SHALL CONTROL THE FOLLOWING FUNCTIONS: 1. UPON START-UP, THE OUTSIDE AIR AND EXHAUST AIR DAMPERS SHALL OPEN TO THEIR MAXIMUM POSITIONS, AND THE SUPPLY AND EXHAUST FANS SHALL START. 2. SUPPLY AND EXHAUST FAN MOTORS SHALL RAMP UP, VIA ELECTRICALLY COMMUTATED MOTOR (ECM) OR VARIABLE FREQUENCY DRIVE (VFD), TO PROVIDE THE SCHEDULED AIRFLOW. 3. HEAT WHEEL SHALL BE AVAILABLE WHEN UNIT IS ENABLED AND SHALL BE STARTED AND STOPPED FROM THE HAND AND OFF POSITIONS, RESPECTIVELY, OF THE HAND -OFF -AUTO SWITCH OF THE VFD AND AUTOMATICALLY STARTED AND STOPPED BY UNIT'S CONTROLS WHEN THE SWITCH IS IN THE AUTO POSITION. ALL SAFETY DEVICES SHALL OPERATE WITH THE SWITCH IN THE HAND OR AUTO POSITIONS. 4. THE HEAT WHEEL SHALL START AND RUN CONTINUOUSLY WHEN AMBIENT TEMPERATURES ARE ABOVE 73`F (ADJUSTABLE) OR BELOW 68`F (ADJUSTABLE). OTHERWISE, THE HEAT WHEEL SHALL BE STOPPED. WHILE OPERATING, THE HEAT WHEEL SHALL MODULATE, VIA ITS ASSOCIATED VFD TO MAINTAIN A LEAVING AIR TEMPERATURE (SUPPLIED TO THE UNIT) OF 72`F (ADJUSTABLE). ONCE THE HEAT WHEEL IS ENERGIZED, IT SHALL OPERATE FOR A MINIMUM OF THIRTY (30) MINUTES. 5. IF THE HEAT WHEEL LEAVING AIR TEMPERATURE (SUPPLY SIDE) DROPS BELOW 64`F (ADJUSTABLE) FOR A PERIOD OF FIFTEEN (15) MINUTES WHILE WHEEL IS OPERATIONAL, THE UNIT'S GAS HEAT EXCHANGER SHALL BE ENERGIZED TO MAINTAIN A UNIT LEAVING AIR TEMPERATURE OF 75°F (ADJUSTABLE). 6. WHEN GAS HEAT IS NO LONGER NEEDED TO MAINTAIN UNIT LEAVING AIR TEMPERATURE SETPOINT, THE GAS HEAT EXCHANGER SHALL DISENGAGE. 7. IF THE HEAT WHEEL LEAVING AIR TEMPERATURE (SUPPLY SIDE) EXCEEDS 76`F (ADJUSTABLE), OR IF THE LEAVING AIR DEWPOINT EXCEEDS 54`F (ADJUSTABLE), FOR A PERIOD OF FIFTEEN (15) MINUTES, UNIT'S WHEN DX COOLING IS NO LONGER REQUIRED TO MAINTAIN THE UNIT LEAVING AIR TEMPERATURE SETPOINT, DX COOLING SHALL DISENGAGE. 8. OUTSIDE AND EXHAUST AIR DAMPERS SHALL BE NORMALLY CLOSED. IN THE EVENT OF A POWER INTERRUPTION OR FAN SHUTDOWN ERV SHALL AUTOMATICALLY RESTART AFTER A POWER FAILURE. 9. IF DISCHARGE AIR TEMPERATURE DROPS BELOW 60°F (ADJUSTABLE), OR RISES ABOVE 83°F (ADJUSTABLE), AN ALARM SHALL BE INITIATED. D. SAFETIES: 1. UPON ACTIVATION OF BUILDING FIRE ALARM, UNIT SHALL SHUT DOWN, AND UNIT'S OUTDOOR AIR AND EXHAUST DAMPERS SHALL SPRING TO THE CLOSED POSITION. 2. UPON DETECTION OF SMOKE IN UNIT'S SUPPLY OR EXHAUST AIR DUCTS, BUILDING FIRE ALARM SYSTEM SHALL BE ALERTED, UNIT SHALL SHUT DOWN, AND UNIT'S OUTDOOR AIR AND EXHAUST DAMPERS SHALL SPRING TO THE CLOSED POSITION. 3. PROVIDE DIFFERENTIAL PRESSURE SENSOR ACROSS FILTERS TO ALARM IF PRESSURE DIFFERENTIAL EXCEEDS CLOGGED FILTER PRESSURE DROP, AS DETERMINED BY FILTER MANUFACTURER. 4. UPON A RISE IN SUPPLY FAN STATIC PRESSURE, 50% GREATER THAN THAT DEVELOPED AT DESIGN AIRFLOW, A HIGH PRESSURE CUTOUT SWITCH SHALL BE ACTIVATED, SUPPLY AND EXHAUST FANS SHALL SHUT DOWN, OUTSIDE AND EXHAUST AIR DAMPERS SHALL CLOSE, THE UNITS SHALL BE DISABLED AND AN ALARM SHALL BE INITIATED. THE HIGH PRESSURE CUTOUT SWITCH SHALL BE MANUALLY RESET TO REACTIVATE THE FAN MOTORS. 5. UPON A RISE IN EXHAUST FAN STATIC PRESSURE, 50% GREATER THAN THAT DEVELOPED AT DESIGN AIRFLOW, A HIGH PRESSURE CUTOUT SWITCH SHALL BE ACTIVATED, SUPPLY AND EXHAUST FANS SHALL SHUT DOWN, OUTSIDE AND EXHAUST AIR DAMPERS SHALL CLOSE, THE UNIT SHALL BE DISABLED AND AN ALARM SHALL BE INITIATED. THE HIGH PRESSURE CUTOUT SWITCH SHALL BE MANUALLY RESET TO REACTIVATE THE FAN MOTORS. HVAC SEQUENCES OF OPERATION VRF TERMINAL UNITS (NUMERICAL TAGS - INCLUDING GUESTROOM CORRIDOR AND HOUSEKEEPING FCUs): A. OCCUPIED/UNOCCUPIED MODES FOR THE VRF TERMINAL UNITS SHALL BE CONTROLLED BY THE BMS, BASED ON SCHEDULING DETERMINED BY THE OWNER. B. IN OCCUPIED MODE, THE VRF UNIT'S INTERNAL CONTROLS SHALL ACTIVATE HEATING AND COOLING MODES TO MAINTAIN SPACE TEMPERATURE BETWEEN 68-F (HEATING) AND 72`F (COOLING) BASED ON TEMPERATURES SENSED BY THE BMS IN THE SPACE SERVED. UNIT'S SUPPLY FAN SHALL OPERATE CONTINUOUSLY. B. IN UNOCCUPIED MODE, THE VRF UNIT'S INTERNAL CONTROLS SHALL ACTIVATE HEATING AND COOLING MODES TO MAINTAIN SPACE TEMPERATURE BETWEEN 65°F (HEATING) AND 76°F (COOLING) BASED ON TEMPERATURES SENSED BY THE BMS IN THE SPACE SERVED. UNIT'S SUPPLY FAN SHALL OPERATE IN "AUTO FAN" MODE. C. THE CORRIDOR FCUs SHALL OPERATE OFF OF RETURN AIR TEMPERATURE INSTEAD OF SPACE TEMPERATURE. D. SAFETIES: 1. SUPPLY FAN STATUS SHALL BE MONITORED BY A CURRENT SWITCH. IF SUPPLY FAN FAILS TO START AFTER HEATING/COOLING MODE HAS BEEN ACTIVATED, AN ALARM SHALL BE INITIATED. 2. UPON UNIT FAILURE, AN ALARM SHALL BE INITIATED. 3. IF SPACE TEMPERATURE DROPS BELOW 60°F (ADJUSTABLE) OR RISES ABOVE 80°F (ADJUSTABLE), THEN AN ALARM SHALL BE GENERATED. 4. THE BMS SHALL INTERFACE WITH EACH UNIT VIA A SERIAL INTERFACE. VRF TERMINAL UNITS (ALPHABETICAL TAGS: A. VRF TERMINAL UNITS WITH ALPHABETICAL TAGS SHALL BE CONTROLLED BY A WALL MOUNTED AUTOMATIC CHANGEOVER THERMOSTAT, MONITORED BY THE BMS SYSTEM. B. OCCUPIED/UNOCCUPIED MODES FOR THE VRF TERMINAL UNITS SHALL BE CONTROLLED THROUGH THE BMS BY THE FRONT DESK AS GUESTS CHECK IN AND OUT. C. IN OCCUPIED MODE, THE VRF UNIT'S INTERNAL CONTROLS SHALL ACTIVATE HEATING AND COOLING MODES TO MAINTAIN SPACE TEMPERATURE BETWEEN 68°F (+/-) 47 (HEATING) AND 72°F (+/-) 4°F (COOLING) BASED ON THE SPACE THERMOSTAT SET POINT. D. IN UNOCCUPIED MODE, THE VRF UNIT'S INTERNAL CONTROLS SHALL ACTIVATE HEATING AND COOLING MODES TO MAINTAIN SPACE TEMPERATURE BETWEEN 65°F (HEATING) AND 76°F (COOLING) BASED ON TEMPERATURES SENSED BY THE SPACE THERMOSTAT. E. SAFETIES: 1. SUPPLY FAN STATUS SHALL BE MONITORED BY A CURRENT SWITCH. IF SUPPLY FAN FAILS TO START AFTER HEATING/COOLING MODE HAS BEEN ACTIVATED, AN ALARM SHALL BE INITIATED. 2. UPON UNIT FAILURE, AN ALARM SHALL BE INITIATED. 3. IF SPACE TEMPERATURE DROPS BELOW 60°F (ADJUSTABLE) OR RISES ABOVE 80°F (ADJUSTABLE), THEN AN ALARM SHALL BE GENERATED. 4. THE BMS SHALL INTERFACE WITH EACH UNIT VIA A SERIAL INTERFACE. HVAC SEQUENCES OF OPERATION AMBIENT CONDITIONS: OUTSIDE AIR TEMPERATURE AND HUMIDITY SHALL BE MONITORED BY THE DDC SYSTEM. SOFTWARE SHALL CALCULATE THE OUTDOOR AIR DEWPOINT. EXHAUST FANS, EF-1, EF-2, EF-4: 1. EXHAUST FAN SHALL RUN CONTINUOUSLY. 2. THE BMS SHALL SEND THE EXHAUST FANS A START/STOP COMMAND. 3. FAN STATUS SHALL BE MONITORED BY BMS VIA A CURRENT SWITCH, AND SHALL ALARM UPON FAILURE. EXHAUST FANS. EF-3 (ROOF MECHANICALI: 1. EXHAUST FAN SHALL BE ENERGIZED BY WALL MOUNTED THERMOSTAT. 2. FAN STATUS SHALL BE MONITORED BY BMS VIA A CURRENT SWITCH, AND SHALL ALARM UPON FAILURE. KITCHEN EXHAUST FANS, KEF-1, KEF-2 AND DISHWASHER EXHAUST FAN KEF-3: 1. SEE FANS SCHEDULE FOR DETAILS OF CONTROLS. NO DDC MONITORING OR CONTROL REQUIRED. 2. FAN STATUS SHALL BE MONITORED BY BMS VIA A CURRENT SWITCH, AND SHALL ALARM UPON FAILURE. MAKE-UP AIR UNITS, MAU-1 AND MAU-2: 1. MAU SHALL BE ENERGIZED BY ASSOCIATED KITCHEN HOOD. 2. FAN STATUS SHALL BE MONITORED BY BMS AND SHALL ALARM UPON FAILURE. MDF/IDF ROOM UNITS: 1. PROVIDE ALARMS FOR HIGH TEMPERATURE, LOW TEMPERATURE, AND LOW RH WITH REMOTE ANNUNCIATION TO THE SECURITY OFFICE AND ENGINEERING OFFICE. ELECTRIC HEATERS: 1. ELECTRICAL HEATERS SHALL BE CONTROLLED BY INTEGRAL OR REMOTE THERMOSTAT. NO DDC MONITORING OR CONTROL. DX MINI -SPLITS: 1. HEATING AND COOLING MODES SHALL BE ACTIVATED BY STANDALONE SPACE THERMOSTAT. SUPPLY FAN SHALL CYCLE WITH UNIT COMPRESSOR. SPACE TEMPERATURE MONITORING: 1. IN ADDITION TO THOSE STATED IN THE SEQUENCES OF OPERATION SPACE TEMPERATURES SHALL BE MONITORED IN THE FOLLOWING ROOMS: 138 - FIRE PUMP 155 - EMER. POWER 156 - ELEC. 244 - AV ROOM 248 - MECH 2. DDC SYSTEM SHALL GENERATE AN ALARM IF THE TEMPERATURES IN THE LISTED SPACES DROP BELOW 40°F (ADJUSTABLE), OR RISER ABOVE 90°F (ADJUSTABLE). CENTER CARMEL, IN ARCHITECT GSB, INC 3555 NW 58th Street, Suite 70OW Oklahoma City, OK 73112 405 / 848-9549 CIVIL ENGINEER Circle Design Group 9229 Delegates Row, Suite 150 Indianapolis, IN 46240 317 / 706-2075 STRUCTURAL ENGINEER StructurePoint 7260 Shadeland Station Indianapolis, IN 46256 317 / 547-5580 MEP ENGINEER DEEM 6831 E. 32nd Street, Suite 200 Indianapolis, IN 46226 317 / 860-2990 INTERIOR DESIGNER HBA Hirsch Bedner Associates 171 17th Street NW, Suite 600 Atlanta, GA 30363 404 / 873-4379 FOOD SERVICE CONSULTANT Ricca Design Studios 5325 South Valentia Way Greenwood Village, CO 80111 303 / 928-1333 a W F- z W U 555 NW 58TH Street MML 1A 9k uite 700-W klahoma City, OK 73112 : 405.848.9549 ,is 405.848.9783 Plagr..ers" .gsb-inuom Copyright C 2018 GSB, Inc NO. I DATE I DESCRIPTION 1 4/17/19 EF-4 REVISION 3 5/08/19 VRF REVISIONS 4 7/24/19 SEQUENCES 5 10/23/19 MISC. CHANGES GSB PROJECT NO. 171528 DRAWING TITLE MECHANICAL SCHEDULES DATE 03/22/19 DRAWING NO. M7-03