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HomeMy WebLinkAboutB16-0254_M701_signed_1507144350.pdfGENERAL WHEN THE UNIT IS NOT SUPPLYING AIR, THE UNIT ISOLATION DAMPERS SHALL BE CLOSED. THE SEQUENCE DESCRIBED BELOW CONSISTS OF THREE MODES: SHUTDOWN, OCCUPIED COOLING OR HEATING, AND ECONOMIZER. SHUTDOWN MODE IS INTENDED TO DESCRIBE STOPPING RTU FANS IN AN ORDERLY MANNER, CLOSING DAMPERS AND INDICATE SHUTDOWN INFORMATION AT THE CONTROLLER. OCCUPIED COOLING OR HEATING MODE IS DETERMINED BASED ON THE OCCUPANCY SCHEDULE AND ADJUSTED BY THE OPTIMAL START PROGRAM FROM THE CONTROLLER. INITIAL OCCUPANCY SCHEDULE SHALL BE RUNNING 24 HOURS PER DAY. SHUTDOWN MODE: WHEN THE RTU IS INDEXED FOR SHUTDOWN MODE, THE UNITS SUPPLY AND EXHAUST FANS SHALL STOP. THE RTU EXHAUST AIR DAMPER SHALL OPEN FULLY, RELIEF AIR, OUTSIDE AIR AND ISOLATION DAMPERS SHALL CLOSE. COOLING AND HEATING SHALL BE DISABLED DURING SHUTDOWN. THE SYSTEM SHALL BE INDEXED TO SHUTDOWN MODE IF ANY ONE OR MORE OF THE FOLLOWING CONDITIONS ARE MET: ● A SHUTDOWN SIGNAL FROM THE CONTROLLER CONSOLE. ● AN ALARM CONDITION FROM THE RTU SUPPLY AND EXHAUST DUCT SMOKE DETECTOR. ● UPON ALARM CONDITION FROM THE RTU FREEZESTAT. OCCUPIED MODE: HEATING OR COOLING: ● AT THE PREDETERMINED OPTIMUM START TIME, AS DETERMINED BY THE OCCUPANCY SCHEDULE, THE RTU WILL BE ENABLED. ● THE BAS SHALL NEXT COMMAND THE RTU TO RUN AND OPEN THE ISOLATION DAMPERS. ● SPACE TEMPERATURE AND HUMIDITY SETPOINTS SHALL BE LOCATED IN TWO FLOORS IN THE CORRIDORS. TEMPERATURE AND HUMIDITY SHALL BE "WORST CASE" SELECTED AS THE CRITICAL CONTROL POINT. ● WITH THE SUPPLY FAN AND EF-7 RUNNING, THE OVERALL AIRFLOWS AT SHALL PROVIDE POSITIVE PRESSURE TO THE BUILDING. A BUILDING PRESSURE SENSOR SHALL BE PROVIDED AS AN AUXILIARY INPUT TO EACH UNIT. THE SENSOR SHALL MEASURE FROM AN UPPER LEVEL CORRIDOR TO OUTSIDE AMBIENT TO ENSURE A POSITIVE READING. EACH UNIT'S CONTROLLER SHALL THEN INDICATE WITH A DIGITAL INDICATION, WHETHER OR NOT THE ASSOCIATED SENSOR IS POSITIVE OR NEGATIVE. ● (MECHANICAL COOLING) ON A RISE IN SPACE AIR TEMPERATURE ABOVE SETPOINT AND THE HEATING COIL IS DISABLED, COOLING SHALL BE STAGED TO MAINTAIN TEMPERATURE SETPOINT (ADJ, INITIAL SETPOINT 74 F RESET THE SPACE TEMPERATURE SET POINT TO 70 F WHENEVER OAT < 35 F, BOTH ADJ.). THE AIR HANDLER SHALL VARY THE SUPPLY FAN SPEED TO MAINTAIN DOWNSTREAM STATIC PRESSURE AS MEASURED BY THE DUCT MOUNTED SENSOR. ● ON A FALL BELOW SPACE AIR TEMPERATURE SETPOINT, AND COOLING IS DISABLED,THE HYDRONIC HEATING COIL SHALL MODULATE TO MAINTAIN DISCHARGE TEMPERATURE SETPOINT. ● HIGH HUMIDITY DISCHARGE CONTROL SHALL BE ACCOMPLISHED VIA THE SPACE HUMIDITY SENSOR TO MAINTAIN A MAXIMUM HUMIDITY OF 55 PERCENT (ADJ.) AND ACCOMPLISHED BY COOLING AT THE AIR HANDLER AND HYDRONIC REHEAT AT THE TERMINAL BOXES. SMOKE SHUTDOWN: IN THE EVENT THAT SMOKE IS PRESENT IN THE RTU EXHAUST OR SUPPLY AIR DUCT: ● AN AUXILIARY CONTACT IN THE EXHAUST OR SUPPLY AIR DUCT SMOKE DETECTOR SHALL OPEN DE-ENERGIZING THE AUTO-MAINTAINED POWER SUPPLY TO THE FAN'S STARTER OR AFD OF THE RTU CAUSING THE FANS TO SHUT OFF. ● THE BAS SHALL SHUT DOWN THE EXHAUST AIR FANS UPON SHUTDOWN OF THE SUPPLY AIR FANS IN THE UNIT. ● SMOKE DETECTOR CONTACTS SHALL BE WIRED IN SERIES IN THE FAN MOTOR STARTER CIRCUIT. ● THE MECHANICAL CONTRACTOR SHALL PROVIDE AND TERMINATE THE HARD-WIRED CONNECTIONS FROM ANY DETECTOR RELAY (PROVIDED BY FIRE ALARM CONTRACTOR AND INSTALLED BY MECHANICAL CONTRACTOR) TO THE ASSOCIATED FAN TO BE SHUT DOWN, UNLESS OTHERWISE COORDINATED WITH THE UNIT MANUFACTURER. ● DURING MORNING COOL DOWN THE COMPRESSOR SHALL MODULATE OPEN OR CLOSED TO MAINTAIN DISCHARGE AIR TEMPERATURE AT DISCHARGE TEMPERATURE SETPOINT (ADJUSTABLE, STARTUP SETPOINT 58 F). THE AHU CONTROLLER SHALL RESET THE SUPPLY AIR TEMPERATURE SETPOINT 1 F COLDER EVERY 10 MINUTES (ADJUSTABLE) UNTIL THE SUPPLY TEMPERATURE IS AT THE OPERATING SETPOINT TEMPERATURE (ADJUSTABLE, INITIAL SETPOINT 55 F). IF THE RETURN AIR RELATIVE HUMIDITY RISES ABOVE 50%, THE 10 MINUTE CYCLE SHALL REPEAT AT THE SAME TEMPERATURE. ● DURING MORNING WARM-UP THE BAS SHALL MODULATE THE PREHEAT COIL VALVE TO ACHIEVE DISCHARGE SETPOINT. AFTER THAT DISCHARGE SETPOINT IS ACHIEVED AND RETURN AIR FROM THE TERMINAL ZONES REACHES THE PREDETERMINED ROOM SETPOINT (68° F, ADJ), THE BAS SHALL COMMAND THE TWO-POSITION, MINIMUM OA DAMPER OPEN. GENERAL NOTE: 1.) TERMINAL UNIT LOOP BRANCH PUMP/LOOP SHALL BE ENABLED WHEN BOILER LOOP IS ENABLED AND RUNNING. HOT WATER PUMP: 1.) THE HOT WATER LOOP CONSISTS OF A CONSTANT VOLUME DEDICATED PUMP THAT SHALL INCORPORATE THREE-WAY MIXING VALVES AT THE TERMINAL UNIT HOT WATER COILS TO MAINTAIN FLOW AND DISCHARGE TEMPERATURE. 2.) WHEN ENABLED, THE PUMP SHALL RUN CONTINUOUSLY. 3.) THE THREE-WAY MIXING VALVES SHALL BE CONTROLLED TO MAINTAIN SPACE TEMPERATURE PER ZONE THROUGH THE TERMINAL UNIT CONTROLLER. VALVES SHALL BE SIZED TO ALLOW CONSTANT FLOW AT THE PUMP. ECONOMIZER MODE: ● SYSTEM SHALL MONITOR DRY BULB TEMPERATURE DIFFERENTIAL BETWEEN RETURN AIR AND OUTDOOR AIR. WHEN OUTDOOR TEMPERATURE IS LESS THAN RETURN AIR TEMPERATURE, ECONOMIZER MODE SHALL BE ENABLED. ● WHEN ECONOMIZER MODE IS ENABLED, OPEN OUTDOOR AIR DAMPER TO 100% SETTING AND CLOSE THE RETURN AIR TO THE 0% SETTING. COOLING AND HEATING SHALL BE DISABLED WHEN ECONOMIZER MODE IS ENABLED. EF-7 SHALL CEASE OPERATION, AND EF-8 SHALL ENABLE TO PROVIDE BUILDING PRESSURE RELIEF. 1.) A MASTER HOOD SWITCH IN THE KITCHEN SHALL ENABLE THE HOOD EXHAUST FAN. THE SWITCH SHALL BE HARD-WIRED TO THE MASTER NATURAL GAS SOLENOID VALVES (AS SHOWN BY PLUMBING DESIGN DOCUMENTS) TO PREVENT COOKING WITHOUT EXHAUST HOOD OPERATION. MAU-1 SHALL BE COMMANDED TO RUN IN OCCUPIED MODE. 2.) WHEN INDIVIDUAL HOOD SWITCH IS INDICATED TO "ON", THE FOLLOWING SHALL OCCUR: a. THE ASSOCIATED APPLIANCE GAS SOLENOID VALVES (BY KITCHEN HOOD MANUFACTURER) SHALL OPEN ALLOWING THE OPERATION OF THE COOKING APPLIANCES. b. THE ASSOCIATED KITCHEN EXHAUST FANS SHALL START AND RUN CONTINUOUSLY. A VFD HAS BEEN PROVIDED FOR SOFT STARTING AND DEMAND CONTROL. THE DEMAND CONTROL SYSTEM SHALL VARY EXHAUST AND MAKEUP AIR FLOWS BASED ON EXHAUST TEMPERATURE OF THE HOOD. c. THE BAS SHALL MONITOR THE ANSUL FIRE SUPPRESSION SYSTEM AND, IF ACTIVATED, THE MASTER GAS SOLENOID VALVES AND ALL APPLIANCE GAS SOLENOID VALVES SHALL CLOSE. THE ASSOCIATED EXHAUST FAN SHALL CONTINUE TO OPERATE. GENERAL WHEN THE UNIT IS NOT SUPPLYING AIR, THE UNIT ISOLATION DAMPERS SHALL BE CLOSED. THE SEQUENCE DESCRIBED BELOW CONSISTS OF THREE MODES: SHUTDOWN, OCCUPIED COOLING OR HEATING, AND ECONOMIZER. SHUTDOWN MODE IS INTENDED TO DESCRIBE STOPPING RTU FANS IN AN ORDERLY MANNER, CLOSING DAMPERS AND INDICATE SHUTDOWN INFORMATION AT THE CONTROLLER. OCCUPIED COOLING OR HEATING MODE IS DETERMINED BASED ON THE OCCUPANCY SCHEDULE AND ADJUSTED BY THE OPTIMAL START PROGRAM FROM THE CONTROLLER. INITIAL OCCUPANCY SCHEDULE SHALL BE RUNNING 24 HOURS PER DAY. SHUTDOWN MODE: WHEN THE RTU IS INDEXED FOR SHUTDOWN MODE, THE UNITS SUPPLY AND EXHAUST FANS SHALL STOP. THE RTU EXHAUST AIR DAMPER SHALL OPEN FULLY, RELIEF AIR, OUTSIDE AIR AND ISOLATION DAMPERS SHALL CLOSE. COOLING AND HEATING SHALL BE DISABLED DURING SHUTDOWN. THE SYSTEM SHALL BE INDEXED TO SHUTDOWN MODE IF ANY ONE OR MORE OF THE FOLLOWING CONDITIONS ARE MET: ● A SHUTDOWN SIGNAL FROM THE CONTROLLER CONSOLE. ● AN ALARM CONDITION FROM THE RTU SUPPLY AND EXHAUST DUCT SMOKE DETECTOR. ● UPON ALARM CONDITION FROM THE RTU FREEZESTAT. OCCUPIED MODE: HEATING OR COOLING: ● AT THE PREDETERMINED OPTIMUM START TIME, AS DETERMINED BY THE OCCUPANCY SCHEDULE, THE RTU WILL BE ENABLED. ● THE BAS SHALL NEXT COMMAND THE RTU TO RUN AND OPEN THE ISOLATION DAMPERS. ● SPACE TEMPERATURE SETPOINTS SHALL MEASURED BY THE SPACE THERMOSTAT. ● THE SUPPLY FAN IN COOLING MODE SHALL VARY THE AIRFLOW FROM 100% TO 50% BASED ON THE LOAD AS DETERMINED BY THE SPACE THERMOSTAT. THE SUPPLY AIRFLOW IN HEATING MODE SHALL BE CONSTANT. ● (MECHANICAL COOLING) ON A RISE IN SPACE AIR TEMPERATURE ABOVE SETPOINT AND THE HEATING COIL IS DISABLED, COOLING SHALL BE STAGED TO MAINTAIN TEMPERATURE SETPOINT (ADJ, INITIAL SETPOINT 74 F RESET THE SPACE TEMPERATURE SET POINT TO 70 F WHENEVER OAT < 35 F, BOTH ADJ.). ● ON A FALL BELOW SPACE AIR TEMPERATURE SETPOINT, AND COOLING IS DISABLED, THE GAS BURNER SHALL STAGE TO MAINTAIN SPACE TEMPERATURE SETPOINT. SMOKE SHUTDOWN: IN THE EVENT THAT SMOKE IS PRESENT IN THE RTU RETURN OR SUPPLY AIR DUCT: ● AN AUXILIARY CONTACT IN THE EXHAUST OR SUPPLY AIR DUCT SMOKE DETECTOR SHALL OPEN DE-ENERGIZING THE AUTO-MAINTAINED POWER SUPPLY TO THE FAN'S STARTER OR AFD OF THE RTU CAUSING THE FANS TO SHUT OFF. ● THE BAS SHALL SHUT DOWN THE EXHAUST AIR FANS UPON SHUTDOWN OF THE SUPPLY AIR FANS IN THE UNIT. ● SMOKE DETECTOR CONTACTS SHALL BE WIRED IN SERIES IN THE FAN MOTOR STARTER CIRCUIT. ● THE MECHANICAL CONTRACTOR SHALL PROVIDE AND TERMINATE THE HARD-WIRED CONNECTIONS FROM ANY DETECTOR RELAY (PROVIDED BY FIRE ALARM CONTRACTOR AND INSTALLED BY MECHANICAL CONTRACTOR) TO THE ASSOCIATED FAN TO BE SHUT DOWN, UNLESS OTHERWISE COORDINATED WITH THE UNIT MANUFACTURER. ● DURING MORNING COOL DOWN THE COMPRESSOR SHALL MODULATE CAPACITY TO MAINTAIN DISCHARGE AIR TEMPERATURE AT DISCHARGE TEMPERATURE SETPOINT (ADJUSTABLE, STARTUP SETPOINT 58 F). THE AHU CONTROLLER SHALL RESET THE SUPPLY AIR TEMPERATURE SETPOINT 1 F COLDER EVERY 10 MINUTES (ADJUSTABLE) UNTIL THE SUPPLY TEMPERATURE IS AT THE OPERATING SETPOINT TEMPERATURE (ADJUSTABLE, INITIAL SETPOINT 55 F). IF THE RETURN AIR RELATIVE HUMIDITY RISES ABOVE 50%, THE 10 MINUTE CYCLE SHALL REPEAT AT THE SAME TEMPERATURE. ● DURING MORNING WARM-UP THE BAS SHALL STAGE THE NATURAL GAS BURNER TO ACHIEVE DISCHARGE SETPOINT. AFTER THAT DISCHARGE SETPOINT IS ACHIEVED AND RETURN AIR FROM THE TERMINAL ZONES REACHES THE PREDETERMINED ROOM SETPOINT (68° F, ADJ), THE BAS SHALL COMMAND THE MINIMUM OA DAMPER OPEN. ECONOMIZER MODE: ● SYSTEM SHALL MONITOR THE DRY BULB DIFFERENTIAL BETWEEN RETURN AIR AND OUTDOOR AIR. WHEN OUTDOOR DRY BULB TEMPERATURE IS LESS THAN RETURN AIR TEMPERATURE, ECONOMIZER MODE SHALL BE ENABLED. ● WHEN ECONOMIZER MODE IS ENABLED, OPEN OUTDOOR AIR DAMPER TO 100% SETTING AND CLOSE THE RETURN AIR TO THE 0% SETTING. COOLING AND HEATING SHALL BE DISABLED WHEN ECONOMIZER MODE IS ENABLED. SEQUENCE OF OPERATION - SINGLE DUCT TERMINAL UNIT - (TYPICAL) SEQUENCE OF OPERATION - VAV TERMINAL UNITS, NO FAN, H.W. HEAT 1. UNOCCUPIED: WHEN THE BUILDING IS INDEXED FOR UNOCCUPIED OPERATION, THE TERMINAL PRIMARY AIR DAMPER SHALL CLOSE. 2. NIGHT SETBACK: THE PRIMARY AIR DAMPER SHALL OPEN TO ITS MINIMUM SETPOINT. WHEN THE SPACE TEMPERATURE DROPS TO 60F (ADJ.), THE HYDRONIC REHEAT VALVE SHALL MODULATE. THE PRIMARY AIR DAMPER SHALL CLOSE WHEN THE SPACE TEMPERATURE RISES TO 65F(ADJ.). 3. NIGHT SETUP: THE PRIMARY AIR DAMPER SHALL OPEN WHEN THE SPACE TEMPERATURE RISES TO 90F. THE PRIMARY AIR DAMPER SHALL CLOSE WHEN THE SPACE TEMPERATURE DROPS TO 85F. 4. OPTIMAL START WARM-UP: WHEN THE OPTIMAL START PROGRAM CALLS FOR WARM UP OPERATION, THE PRIMARY AIR DAMPER SHALL OPEN TO ITS HEATING CFM SETPOINT AND MODULATE THE HW VALVE TO OPEN. THE VAV TERMINAL SHALL OPERATE AS DESCRIBED UNDER OCCUPIED OPERATION. 5. OPTIMAL START COOL-DOWN: WHEN THE OPTIMAL START PROGRAM CALLS FOR COOL-DOWN OPERATION, THE PRIMARY AIR DAMPER SHALL OPEN TO ITS MAXIMUM COOL CFM SETPOINT. THE VAV TERMINAL SHALL OPERATE AS DESCRIBED UNDER OCCUPIED OPERATION. 6. UNOCCUPIED OVERRIDE: THE UNIT TEMPERATURE SENSOR SHALL HAVE AN OVERRIDE SWITCH IN THE HOUSING WHICH CAN BE MANUALLY ACTIVATED TO PROVIDE ONE HOUR (ADJ.) OF OCCUPIED TERMINAL OPERATION DURING THE UNOCCUPIED PERIOD. THE AHU SHALL START AND OPERATE AS DESCRIBED UNDER ITS SEQUENCE OF OPERATION. THE TERMINAL SHALL OPERATE AS DESCRIBED UNDER OCCUPIED OPERATION. 7. OCCUPIED: WHEN THE UNIT IS INDEXED FOR OCCUPIED OPERATION, THE UNIT SHALL CONTROL AT THE HEATING SETPOINT OF 70 F, COOL SETPOINT OF 74 F . THE PRIMARY AIR DAMPER SHALL BE POSITIONED TO ITS CFM AIR FLOW, AS SCHEDULED. THE HEATING COIL SHALL MODULATE AS REQUIRED TO MAINTAIN THE SPACE TEMPERATURE . ON A RISE IN SPACE TEMPERATURE THE PRIMARY AIR DAMPER WILL OPEN AFTER THE HW VALVES HAVE BOTH CLOSED. 8. THE CONTROLS SHALL BE ARRANGED FOR PRESSURE INDEPENDENT OPERATION, I.E., THE DAMPER POSITION SHALL BE SET BY THE FLOW SENSOR, AND THE SPACE TEMPERATURE WILL RESET THE FLOW SENSOR SO THAT PRIMARY AIR FLOW WILL BE CONSTANT AT ANY SETPOINT, REGARDLESS OF CHANGES IS PRIMARY DUCT PRESSURE. 1 A 2 3 4 5 6 A B C D E 1 3 4 5 6 2 COPYRIGHT 2016 BASKERVILL. USE OF THIS WORK IN WHOLE OR IN PART IS FORBIDDEN WITHOUT EXPRESSED WRITTEN CONSENT. B C D E DRAWING NO. P.O. BOX 400, RICHMOND, VA 23218-0400 DRAWING TITLE ISSUE PROJECT OWNER ® 9/19/2017 4:50:51 AM UNIT CONTROLS THE WIDEWATERS GROUP 2.160036.0 DOUBLETREE VAIL, CO CONVERSION GUESTROOMS & PUBLIC SPACES RENOVATION 08/25/16 - CONSTRUCTION DOCUMENTS M701 2211 N FRONTAGE RD, VAIL, COLORADO 81657 SEQUENCE OF OPERATIONS AHU VARIABLE AIR VOLUME AIR HANDLER UNIT SEQUENCE OF OPERATIONS TERMINAL UNIT HYDRONIC CONTROLS 1 8/25/2016 FOR CONSTRUCTION SET 10 9/15/17 CCD-06 SEQUENCE OF OPERATIONS KITCHEN HOOD INTEGRATION SEQUENCE OF OPERATIONS ROOFTOP UNIT (RTU-A1) SEQUENCE OF OPERATIONS TERMINAL UNIT AIRSIDE CONTROLS 09/07/2017 201709/0 10/04/17