AHU-205-1-1 Drawings.pdf

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NEW WORK DDC DIAGRAM FOR CLP-205-B-2 & 3

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EXISTING PARTIAL BAS ONE-LINE DIAGRAM

REVISED PARTIAL BAS ONE-LINE DIAGRAM

CLOCKTOWER 1ST FLOOR

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AHU-205-2-1

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ROBERT SHAW

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MSTP BUS

2. CONTRACTOR TO VERIFY CLP-205-1-1 DEVICE ADDRESS IN THE FIELD.

CONTRACTOR SHALL PROVIDE THE PROPER COMMUNICATION BUS TERMINATION DEVICES FOR THEIR CONTROL SYSTEM.

SHALL BE RUN IN EMT. THE COMMUNICATION BUS SHALL BE RUN WITHOUT SPLICES BETWEEN THE HVAC EQUIPMENT CONTROL PANELS. THE

1. RUN NEW MSTP BUS AS SHOWN PRIOR TO DEMOLITION OF EXISTING TO MAINTIAN MSTP COMMUNICATIONS. THE COMMUNICATION BUS WIRING

NOTES:

OF THE EXISTING EF CURRENTLY SCHEDULED THRU CLP-205-B-1.

DIAGRAM BELOW). THE CLP-205-B-3 DATABASE SHALL BE MODIFIED AND THE PROGRAMMING UPDATED TO ADD THE SCHEDULING AND OPERATION

1. THE EF-205-4-1 RELAY SHALL BE REPLACED AND CONTROLLED THRU A SPARE BINARY OUTPUT (TO 03) LOCATED IN CLP-205-B-3 (SEE

NOTES:

CLP-205-B-1 CABINET LOCATION.

COVER PLATE INSTALLED. THE SENSOR WIRE SHALL BE DEMOLISHED TOTHE MAXIMUM EXTENT POSSIBLE BETWEEN THE THIRD FLOOR AND THE

RETURNED TO THE COR AS SALVAGE ITEMS. THE SPACE SENSOR LOCATED ON THE THIRD FLOOR SHALL BE DEMOLISHED AND A STAINLESS STEEL

PHASE OF THE WORK NOT TO DAMAGE THE EXISTING CONTROLLER, SPACE TEMPERATURE SENSORS, AND POWER SUPPLY. THESE ITEMS SHALL BE

1. CLP-205-B-1 IS AN EXISTING ROBERT SHAW MSC-MPC CONTROLLER. THE CONTRACTOR SHALL TAKE PRECAUSTIONS DURING THE DEMOLITION

NOTES:

2. DEMOLISH PROPRIETARY BUS BACK TO THE JENNY LOCATED IN THE ANNEX BUILDING TO THE MAXIMUM EXTENT POSSIBLE.

1. RUN NEW MSTP BUS AS SHOWN BELOW PRIOR TO DEMOLITION OF EXISTING TO MAINTIAN MSTP COMMUNICATIONS.

NOTES:

CCLP-217-1-1

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DEMOLITION DDC DIAGRAM FOR AIR HANDLING UNIT AHU-205-1-1

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NEW WORK DDC DIAGRAM FOR AIR HANDLING UNIT AHU-205-1-1

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2. AHU-205-1-1 SHALL REMAIN OPERATIONAL DURING THE CONTRACT. THE CONTRACTOR SHALL BE ALLOWED TO SHUT DOWN THE AHU FOR BRIEF PERIODS NOT TO EXCEED 120 MINUTES DURING THE NORMALLY OCCUPIED TIME IN ORDER TO DEMOLISH INPUTS/OUTPUTS.

BACK TO THE MAIN LOCATED AT THE EXISTING CONTROL PANEL LOCATION. THE CONTROL COMPONENT DEMOLITION SHALL ALSO INCLUDE ANY OTHER CONTROL COMPONENTS NOT RESUED WITH THE NEW BACNET CONTROL PANEL.

SALVAGE ITEMS. THE CONTRACTOR SHALL REPLACE THE PNEUMATIC ACTUATORS FROM THE CHILLED WATER VALVE AND THE DAMPER ASSEMBLIES WITH ELECTRIC ACTUATORS. THE CONTRACTOR SHALL REMOVE THE LINKAGE BETWEEN THE RETURN AND OUTSIDE AIR DAMPERS. THE PNEUMATIC TUBING SHALL BE DEMOLISHED

1. CLP-205-1-1 IS AN EXISTING ROBERT SHAW MSC-MPC CONTROLLER. THE CONTRACTOR SHALL TAKE PRECAUSTIONS DURING THE DEMOLITION PHASE OF THE WORK NOT TO DAMAGE THE EXISTING CONTROLLER, EXPANSION MODULES, POWER SUPPLY, AND ACTUATORS. ALL THESE ITEMS SHALL BE RETURNED TO THE COR AS

NOTES:

BACK AGAIN.

8. THE CONTRACTOR SHALL SIZE THE ELECTRIC ACTUATORS WITH THE PROPER TORQUE REQUIREMENTS FOR THE END DEVICE CONTROLLED. DURING EQUIPMENT STARTUP, THE CONTRACTOR SHALL DEMONSTRATE EACH DAMPER AND VALVE ACTUATOR AND OPERATE THEM THROUGH THEIR ENTIRE RANGE FROM CLOSED TO OPEN AND

THE VERY LEAST, TO ORGANIZE THE WIRES AND NOT ALLOW WIRES TO LIE ON THE CEILING TILE AT A MINIMUM. LABEL EACH WIRE EVERY TEN FEET. 120 VOLT WIRING SHALL BE RUN IN CONDUIT. KEEP LOW VOLTAGE WIRING (30 VOLTS AND LESS) AND 120 VOLT WIRING IN SEPARATE CONDUITS.

7. SENSOR WIRING SHALL NOT BE EXPOSED IN OCCUPIED SPACES. OPEN WIRING ABOVE SUSPENDED CEILINGS SHALL BE ALLOWED ONLY FOR LOW VOLTAGE PLENUM RATED CABLE (30 VOLTS & LESS), AND CABLE SHALL BE NEATLY SECURED IN BUNDLES WITH TIE-WRAPS AND SECURED TO BRIDAL HANGERS WITH WIRE TIES AT

6. UPDATE GRAPHIC SCREENS ON NIAGARA FRONTEND. ADJUSTABLE VALUES DETAILED IN THE SEQUENCE OF OPERATION SHALL BE AVAILABLE ON THE GRAPHIC SCREEN.

5. PROGRAM NEW CONTROLLER WITH SEQUENCE OF OPERATION SHOWN ON FOLLOWING SHEET.

4. REPLACE THE FIRST FLOOR SPACE THERMOSTAT WITH SLINK SENSOR WITH PB OVERRIDE. REPLACE THE BASEMENT THERMOSTAT WITH A SPACE TEMPERATURE SENSOR. INSTALL NEW OUTSIDE AIR TEMPERATURE SENSOR IN THE COVERED TOWER SECTION OF THE BUILDING.

3. AHU-205-1-1 SHALL REMAIN OPERATIONAL DURING THE CONTRACT. THE CONTRACTOR SHALL BE ALLOWED TO SHUT DOWN THE AHU FOR BRIEF PERIODS NOT TO EXCEED 120 MINUTES DURING THE NORMALLY OCCUPIED TIME IN ORDER TO DEMOLISH INPUTS/OUTPUTS.

2. THE NEW CLP-205-1-1 SHALL BE A SINGLE CONTROLLER TO CONTAIN THE REQUIRED I/O TO ACCOMODATE THE CONTROL POINTS SHOWN.

1. ALL ITEMS SHOWN IN HEAVY LINE WEIGHT ARE TO BE NEW. THE NEW DPS SAFETY SHUTDOWN PRESSURE SWITCHES SHALL BE SET AT 2.5 INWC TO PREVENT OVERPRESSURIZATIONS OF THE EQUIPEMENT. SEE ATTACHED SCOPE OF WORK FOR ADDITIONAL REQUIREMENTS FOR I/O DEVICES.

NOTES:

ROUTING OF THE BAS ALARMS.

ALARMS: DURING THE EXECUTION OF THIS CONTRACT, THE CONTRACTOR SHALL COORDINATE THROUGH THE COR WITH THE BUILDING OCCUPANT ON THE

ALLOWED TO FORCE THE DAMPERS MORE THAN 40 PERCENT OPEN (ADJ).

CAUSE THE MAT TO GO BELOW 50 DEGREES (ADJ). IF THE AHU IS USING CHILLED WATER TO ACHIEVE THE DAT_SP, THE OVERRIDE SHALL NOT BE

PARTS PER MILLION GREATER THAN THE OA CO2 LEVEL. THE OA CO2 IS A GLOBAL VALUE IN THE BAS. THE OVERRIDE SHALL NOT BE ALLOWED TO

OA ECONOMIZER DAMPER POSITION. THE MINIMUM POSITION SHALL BE OVERRIDDEN UPWARD TO KEEP THE RA CO2 LEVEL BETWEEN 600 AND 700

CARBON DIOXIDE (CO2) DEMAND VENTILATION CONTROL SEQUENCE: THE CO2 LEVEL IN THE RA STREAM SHALL BE USED TO OVERRIDE THE MINIMUM

AND 68 DEGREES F (ADJ) OAT.

MODULATED BACK TO THE MINIMUM OUTSIDE AIR POSITION (15% ADJ.). THE USE OF BOTH OA AND CHILLED WATER SHALL BE ALLOWED BETWEEN 60

ECONOMIZER DAMPERS SHALL BE MODULATED TO ACHIEVE THE DAT_SP. IF p_20511_OAT IS ABOVE 68 DEGREES F (ADJ), THE DAMPERS SHALL BE

ECONOMIZER CONTROL SEQUENCE: WHEN THE p_20511_OAT IS BELOW 60 DEGREES F (ADJ), THE CHILLED WATER VALVE SHALL BE CLOSED AND THE

DEGREES F (ADJ), THE DAT_SP SHALL BE 55 DEGREES F. WHEN p_20511 IS 74 DEGREES F (ADJ), THE DAT_SP SHALL BE 60 DEGREES F (ADJ).

RESET SCHEDULE BASED ON p_20511_RMT. THE DAT_SP SHALL RANGE FROM 55 DEGREES F (ADJ) TO 65 DEGREES F (ADJ). WHEN p_20511 IS 78

DISCHARGE AIR TEMPERATURE CONTROL SEQUENCE: THE DISCHARGE AIR TEMPERATURE SET POINT (DAT_SP) SHALL BE RESET PER AN ADJUSTABLE

EXHAUST DAMPER CONTROL SEQUENCE: THE EXHAUST AIR DAMPER SHALL MODULATE TO MAINTAIN THE BSP_SP.

THE REQUIRED DUCT STATIC SET POINT.

OF THE CONTRACT, THE CONTROL TECHNICIAN SHALL DETERMINE THE MAP WHEN THE AHU IS OPERATING AT 0% OA AND THE SUPPLY FAN IS MEETING

MIXED AIR PLENUM PRESSURE SET POINT AS ESTABLISHED DURING THE CONTROL SYSTEM POINT VERIFICATION. DURING THE VERIFICATION PHASE

RETURN FAN VARIABLE FREQUENCY DRIVE (VFD) CONTROL SEQUENCE: THE VFD SHALL VARY THE SPEED OF THE RETURN FAN MOTOR TO ACHIEVE THE

(ADJ). THE VFD SHALL VARY THE SPEED OF THE SUPPLY FAN MOTOR TO ACHIEVE THE DUCT STATIC PRESSURE SET POINT.

SUPPLY FAN VARIABLE FREQUENCY DRIVE (VFD) CONTROL SEQUENCE: THE DUCT STATIC PRESSURE SET POINT (DSP_SP) SHALL BE 1.5 INWC

ENABLED:

p_20511_NSB SWITCHED TO OCCUPIED MODE (DAY). WHEN THE MOTOR PROOFS ARE CONFIRMED, THE FOLLOWING CONTROL SEQUENCES SHALL BE

OCCUPIED PERIOD CONTROL SEQUENCE: WHEN THE SPACE IS OCCUPIED, THE SUPPLY AND RETURN AIR FANS SHALL BE COMMANDED ON AND

TERMINATED.

DISCHARGE AIR TEMPERATURE OF 55 DEGREES F (ADJ.). WHEN p_20511_RMT IS LESS THAN CLD_DIS, THE COOL-DOWN SEQUENCE SHALL BE

FAN VARIABLE FREQUENCY DRIVE (VFD) CONTROL SEQUENCE SHALL BE ENABLED, AND COOLING COIL VALVE SHALL MODULATE TO ACHIEVE A

WHEN THE MOTOR PROOFS ARE CONFIRMED, THE SUPPLY FAN VARIABLE FREQUENCY DRIVE (VFD) CONTROL SEQUENCE SHALL BE ENABLED, THE RETURN

SHALL BE COMMANDED ON, p_20511_NSB SWITCHED TO OCCUPIED MODE (DAY), AND THE OUTSIDE AND EXHAUST AIR DAMPERS SHALL REMAIN CLOSED.

MECHANICAL COOL-DOWN SEQUENCE FOR UNOCCUPIED MODE: DURING THE MECHANICAL COOL-DOWN SEQUENCE, THE SUPPLY AND RETURN AIR FANS

BE TERMINATED.

FREQUENCY DRIVE (VFD) CONTROL SEQUENCE SHALL BE ENABLED. WHEN p_20511_RMT IS GREATER THAN WRMUP_DIS, THE WARM-UP SEQUENCE SHALL

ARE CONFIRMED, THE SUPPLY FAN VARIABLE FREQUENCY DRIVE (VFD) CONTROL SEQUENCE SHALL BE ENABLED AND THE RETURN FAN VARIABLE p_20511_NSB SWITCHED TO OCCUPIED MODE (DAY), AND THE OUTSIDE AND EXHAUST AIR DAMPERS SHALL REMAIN CLOSED. WHEN THE MOTOR PROOFS

WARM-UP SEQUENCE FOR UNOCCUPIED MODE: DURING THE WARM-UP SEQUENCE, THE SUPPLY AND RETURN AIR FANS SHALLS BE COMMANDED ON, THE COOLING VALVE SHALL BE CLOSED.

OUTSIDE AND EXHAUST AIR DAMPERS SHALL BE CLOSED, THE TSTAT SETBACK SOLENOID (p-20511_NSB) SHALL BE SWITCHED TO MAIN (NIGHT), AND

SEQUENCE SHALL BE INITIATED. AT ALL OTHER TIMES DURING THE UNOCCUPIED PERIOD, THE SUPPLY AND RETURN FANS SHALL BE OFF, THE

TEMPERATURE IS LESS THAN OR EQUAL TO CWS_HL, AND, THERE IS CWP PROOF (CWP-234-1-1 OR CWP-234-1-2), THE MECHANICAL COOL-DOWN

THAN CLD_ENA DURING THE UNOCCUPIED PERIOD, THE OUTSIDE AIR TEMPERATURE (p_20511_OAT) IS GREATER THAN 65 DEGREES F (ADJ), THE CWS

AND, THERE IS PUMP PROOF (HCP-205-B-1 OR HCP-205-B-2), THE WARM-UP SEQUENCE SHALL BE INITIATED. IF THE p_20511_RMT IS GREATER

WATER SUPPLY (CT_HWS) TEMPERATURE IS GREATER THAN HWS_LL AS SENSED BY THE CLOCK TOWER BUILDING HEATING WATER TEMPERATURE SENSOR, UNOCCUPIED PERIOD CONTROL SEQUENCE: IF p_20511_RMT IS LESS THAN WRMUP_ENA DURING THE UNOCCUPIED PERIOD, THE CLOCK TOWER HEATING

SYSTEM.

SHALL ACCOUNT FOR THE OUTSIDE AIR TEMPERATURE AND HVAC SYSTEM PERFORMANCE IN ORDER TO OPTIMIZE THE PRESTART TIME OF THE HVAC

SO THAT THE SPACE IS AT THE OCCUPANCY SET POINT TEMPERATURE AT THE BEGINNING OF THE OCCUPIED PERIOD. THE OPTIMAL START FEATURE

THE CONTROL PANEL SHALL PERFORM OPTIMAL START SUCH THAT THE CONTROL PANEL SHALL START THE AHU BEFORE THE OCCUPANCY SCHEDULED TIME

70 DEGREES F (ADJ) FROM SEPTEMBER 16 (ADJ) THROUGH MAY 14 (ADJ). FOR THE REMAINDER OF THE TIME, THE SPACE SHALL BE UNOCCUPIED.

HOLIDAY. THE OCCUPIED SPACE TEMPERATURE SET POINT SHALL BE 76 DEGREES F (ADJ) FROM MAY 15 (ADJ) THROUGH SEPTEMBER 15 (ADJ) AND

IF A HOLIDAY FALLS ON A SATURDAY, THE PRECEDING FRIDAY IS A HOLIDAY. IF THE HOLIDAY FALLS ON A SUNDAY, THE FOLLOWING MONDAY IS A

CHRISTMAS DAY, DECEMBER 25TH

THANKSGIVING DAY, 4TH THURSDAY IN NOVEMBER

VETERAN'S DAY, NOVEMBER 11TH

COLUMBUS DAY, 2ND MONDAY IN OCTOBER

LABOR DAY, 1ST MONDAY IN SEPTEMBER

INDEPENDENCE DAY, JULY 4

MEMORIAL DAY, LAST MONDAY IN MAY

PRESIDENT'S DAY, 3RD MONDAY IN FEBRUARY

MARTIN LUTHER KING DAY, 3RD MONDAY IN JANUARY

NEW YEAR'S DAY, JANUARY 1

HOLIDAYS. THE FEDERAL HOLIDAYS ARE:

OCCUPIED/UNOCCUPIED SCHEDULE: THE SPACE SHALL BE OCCUPIED FROM 6:30 A.M. TO 5:00 P.M., MONDAY THROUGH FRIDAY EXCEPT FOR FEDERAL

CLP-205-1-1 POINT DATABASE SEQUENCE OF OPERATION FOR AHU-205-1-1