AHU-205-2-1 Drawings.pdf

COIL

COOLING

AIR

SUPPLY

OUTSIDE

AIR

NO

NCNC

AIR

EXHAUST

S

DAS

PRF

BI

MAS

AI

M

M

M

AO AIAO AIBI

VFD-205-2-1VFD-205-2-2

T

D

SPS

ISBOAO BOAO

AO

CO

CI

PO

CI

AI

PO

AO

CO

AI

AI

RAF-205-2-1 SUPPLY FANAHU-205-2-1

CWR

CWS

LL

PRF

BI

CI

DF

AI

AI

AI

AI

CO

BO

FILTER

CI

BI

CO

BOBO

CO

CO

BO AO

AO

AO

AO

CI

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AI

AI

AI

AI

AI

PORT

IS

15 PSIG

MAIN

TO TSTATS

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CI

T

D

PRESSURE

BUILDING

RETURN

AIR

NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

EXISTING PARTIAL BAS ONE-LINE DIAGRAM

REVISED PARTIAL BAS ONE-LINE DIAGRAM

NOT TO SCALE

DEMOLITION DDC DIAGRAM FOR AIR HANDLING UNIT AHU-205-2-1

N:217 D:73

AHU-205-2-1

CLP-205-2-1

VAV-205-2-3

CLP-205-2-2

N:217 D:18

MNB-V2

FILTER

COIL

COOLING

AIR

SUPPLY

OUTSIDE

AIR

NO

NCNC

AIR

EXHAUST

S

DAS

PRF

BI

MAS

AIAO AIBI AIBI

VFD-205-2-1VFD-205-2-2

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D

BOAO BOAO

RAF-205-2-1 SUPPLY FANAHU-205-2-1

LL PRF

BI

RETURN

AIR

RAS

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MM

M

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AO AIAI

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CO2

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PRESSURE

BUILDING

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CWR

CWS

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15 PSIG

MAIN

TO TSTATS

DPS

DPS

DF

NEW WORK DDC DIAGRAM FOR AIR HANDLING UNIT AHU-205-2-1

S

S

MNB-1000

CLP-205-2-1

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S L

IN

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UO

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UO

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UO

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UO

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MNB-1000

MSC-MPC

CLP-205-2-1

CLP-205-2-1 CLP-205-1-1

ROBERT SHAW ROBERT SHAW

AHU-205-2-1 AHU-205-1-1

EOL

CLOCKTOWER 1ST FLOOR

AHU20511

MSC-MPC

CLOCKTOWER 2ND FLOOR

AHU20512

MSC-MPC

BUS

PROPRIETARY

MNB-300

TAC

VAV-205-2-3

CLP-205-2-2

N:217 D:18

TAC

MNB-V2

MSTP BUS

CLP-205-1-1

ROBERT SHAW

AHU-205-1-1

CLOCKTOWER 1ST FLOOR

AHU20511

MSC-MPC

BUS

PROPRIETARYEOL

TAC

MSTP BUS

CT HW SYS

CLP-205-B-3

N:217 D:12

TAC

MNB-300

CT HW SYS

CLP-205-B-3

N:217 D:12

TIME IN ORDER TO DEMOLISH INPUTS/OUTPUTS.

3. AHU-205-2-1 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

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.

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 BACK

EXPANSION MODULES, POWER SUPPLY, AND ACTUATORS. ALL THESE ITEMS SHALL BE RETURNED TO THE COR AS SALVAGE ITEMS. THE CONTRACTOR SHALL REPLACE THE PNEUMATIC ACTUATORS ON THE CHILLED WATER

2. CLP-205-2-1 IS AN EXISTING ROBERT SHAW MSC-MPC CONTROLLER. THE CONTRACTOR SHALL TAKE PRECAUTIONS DURING THE DEMOLITION PHASE OF THE WORK NOT TO DAMAGE THE EXISTING CONTROLLER,

1. ALL ITEMS SHOWN IN HEAVY LINE WEIGHT ARE TO BE DEMOLISHED.

NOTES:

EOL TO CLP-205-1-1.

1. DEMOLISH THE PROPRIETARY BUS BACK TO THE FIRST FLOOR MECHANICAL ROOM AND RELOCATE THE

NOTES:

DAMPER AND VALVE ACTUATOR AND OPERATE THEM THROUGH THEIR ENTIRE RANGE FROM CLOSED TO OPEN AND 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

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.

BE NEATLY SECURED IN BUNDLES WITH TIE-WRAPS AND SECURED TO BRIDAL HANGERS WITH WIRE TIES AT THE VERY LEAST, TO ORGANIZE THE WIRES AND NOT ALLOW WIRES TO LIE ON THE CEILING TILE AT A

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

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 SPACE THERMOSTAT WITH SLINK SENSOR WITH PB OVERRIDE.

TIME IN ORDER TO DEMOLISH INPUTS/OUTPUTS.

3. AHU-205-2-1 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

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

INSTALLATION.

ATTACHED SCOPE OF WORK FOR ADDITIONAL REQUIREMENTS FOR I/O DEVICES. CONTRACTOR TO PROVIDE A SUBMITTAL OF THE PROPOSED CONTROL DRAWINGS AND CONTROL COMPONENTS FOR APPROVAL PRIOR TO

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

NOTES:

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

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

SHALL BE RUN WITHOUT SPLICES BETWEEN THE HVAC EQUIPMENT CONTROL PANELS. THE CONTRACTOR

COMMUNICATIONS. THE COMMUNICATION BUS WIRING SHALL BE RUN IN EMT. THE COMMUNICATION BUS

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

NOTES:

CLP-205-2-1 POINT DATABASE SEQUENCE OF OPERATION FOR AHU-205-2-1

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

DAMPERS MORE THAN 40 PERCENT OA (ADJ).

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

PER MILLION GREATER THAN THE OAT_Co2. THE OAT_Co2 IS A GLOBAL VALUE. THE OVERRIDE SHALL NOT BE ALLOWED TO CAUSE THE MAT TO GO

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

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 THE ANNX_OAT IS ABOVE 68 DEGREES F (ADJ), THE DAMPERS SHALL BE

ECONOMIZER CONTROL SEQUENCE: WHEN THE ANNX_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_20521 IS 74 DEGREES F (ADJ), THE DAT_SP SHALL BE 60 DEGREES F (ADJ).

RESET SCHEDULE BASED ON p_20521_RMT. THE DAT_SP SHALL RANGE FROM 55 DEGREES F (ADJ) TO 65 DEGREES F (ADJ). WHEN p_20521 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 (ADJ.).

ACHIEVES THE DSP_SP.

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

MIXED AIR PLENUM PRESSURE SET POINT AS ESTABLISHED DURING THE CONTROL SYSTEM STARTUP AND POINT VERIFICATION TESTING. DURING THE

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

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 1.0 INWC (ADJ).

ENABLED:

p_20521_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_20521_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_20521_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_20521_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_20521_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, VALVE SHALL BE CLOSED.

EXHAUST AIR DAMPERS SHALL BE CLOSED, THE TSTAT SETBACK SOLENOID (p_20521_NSB) SHALL BE SWITCHED TO MAIN (NIGHT), AND THE COOLING

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

VALUE) 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 SEQUENCE

THE OUTSIDE AIR TEMPERATURE (ANNX_OAT IS A GLOBAL VALUE) IS GREATER THAN 65 DEGREES F (ADJ), THE CWS TEMPERATURE (CWS IS A GLOBAL

HCPB2_PRF), THE WARM-UP SEQUENCE SHALL BE INITIATED. IF THE p_20521_RMT IS GREATER THAN CLD_ENA DURING THE UNOCCUPIED PERIOD, WATER SUPPLY (CT_HWS) TEMPERATURE IS GREATER THAN HWS_LL, AND, THERE IS CLOCK TOWER HEATING WATER SYSTEM PUMP PROOF (HCPB1_PRF OR

UNOCCUPIED PERIOD CONTROL SEQUENCE: IF p_20521_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

72 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 4:00 P.M., MONDAY THROUGH FRIDAY EXCEPT FOR FEDERAL