_6-Lab-Mechanical.pdf

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SYMBOLS AND

ABBREVIATIONS

M-001

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FIRST FLOOR PLAN - HVAC

M-101

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SECOND FLOOR PLAN -

HVAC

M-102

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PENTHOUSE AND ROOF

PLAN - HVAC

M-103

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4'0 8' 16'

SCALE: 1/8"=1'-0"

FIRST FLOOR PLAN - PIPING

M-201

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SECOND FLOOR PLAN -

PIPING

M-202

SCALE 1/4" = 1'-0"SCALE 1/4" = 1'-0"

WEST WING FIRST & SECOND FLOOR

EAST WING FIRST & SECOND FLOOR

SCALE 1/4" = 1'-0"

EAST WING PENTHOUSE

SCALE 1/4" = 1'-0"

WEST WING PENTHOUSE

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SECTIONS

M-301

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ENLARGED PENTHOUSE

HVAC & PIPING

M-401

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DETAILS

M-501

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M-502

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M-503

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AIR HANDLING UNIT

M-504

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SCHEDULES

M-601

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SCHEDULES

M-602

CHILLED WATER ICE STORAGE PIPING SCHEMATIC - EAST WINGHEATING WATER PIPING SCHEMATIC - EAST WING

HEATING WATER PIPING SCHEMATIC - WEST WING CHILLED WATER ICE STORAGE PIPING SCHEMATIC - WEST WING

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FLOW DIAGRAM

M-701

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CONTROL DIAGRAMS

M-801

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CONTROL DIAGRAMS

M-802

P-3A/6A

3/4"Ø

SEE PLAN SHEETS

FOR LOCATION

TO AHU'S AND AIR

TERMINAL UNIT

VFD

P-3B/6B

VFD

H W

S

H W

R

DPS-1

4"Ø

HWR

HWS

4"Ø

T

C

CHEMICAL

FEEDER

3/4"Ø

HWS

4"Ø

TO FLOOR

DRAIN

3/4"Ø

T-2/4

B&G 87 AIR VENT

B&G 87 AIR VENT

PRV-1/2 1"Ø

CW

AIR SEPARATOR

AS-1/2

TO DRAIN

HWS

4"Ø

4"Ø

4"Ø

3"Ø

3"Ø

BOILER DRAIN LINE TO

NEAREST FLOOR DRAIN

TO FLOOR DRAIN

B-1B/2A

B-1A/2A

TO FLOOR

DRAIN

4"Ø

4"Ø

T-5/6 T-5/6 T-5/6

T cws

4"Ø

4"Ø

4"Ø

CWR

T-7/8

FLEXIBLE

CONNECTIONDPS-1

DRAIN

DIFFERENTIAL

PRESSURE

SWITCH

DIFFERENTIAL

PRESSURE

GAUGE TYPCH-1/4

4"Ø

C

FLEXIBLE

CONNECTIONDPS-2

DRAIN

DIFFERENTIAL

PRESSURE

SWITCH

DIFFERENTIAL

PRESSURE

GAUGE TYPCH-2/3

4"Ø

4"Ø

PRESSURE SWITCH

1"Ø

3/4"Ø

T-1

GLYCOL-WATER

MAKE-UP SYSTEM

PACKAGE

PLAIN OUTLET

FAUCET

LCW LEVEL

SWITCH

CCLD WATER

MAKE-UP BY

PLUMBING3/4"Ø

P-2A/5A

THERMAL ENERGY FLOW METER

6"Ø

C W

R

SCWR

6"Ø

6"Ø

6"Ø

SCWS

SCWR

SEE PLAN SHEET

FOR LOCATION

P-2B/5B

6"Ø TO BLDG.

TC DDC SYSTEM

VFD-4

VFD-3

T

P-1A/4A

P-1B/4B

3/4"Ø

3/4"Ø

1"Ø

TO GLYCOL

MAKEUP TANK

CHEMICAL

FEEDER

DPS-3

C

S

HEATING WATER PIPING CHILLED WATER ICE STORAGE PIPING SCHEMATIC - EAST & WEST WING

HEATING WATER SYSTEM SEQUENCE OF OPERATION:

BOILER MANUFACTURER SHALL PROVIDE BOILERS WITH A FULL-MODULATION SEQUENCING CONTROLLER (SC). ALL PROGRAMS AND LOGIC REQUIRED FOR TEMPERATURE CONTROL, TEMPERATURE RESET, FIRING RATE MODULATION AND SEQUENCING OF BOILERS SHALL BE CONTAINED IN THE SC OF THE CORRESPONDING BOILER AND SHALL BE COMPLETE WITH ALL REQUIRED PROGRAMMING. EACH SC AND ITS ASSOCIATED PROGRAMS SHALL BE CAPABLE OF OPERATING COMPLETELY INDEPENDENTLY AND SHALL BE CONNECTED TO INTEROPERABLE WITH THE BUILDING AUTOMATED SYSTEM (BAS), AS INDICATED. EACH SC SHALL BE WALL MOUNTED BY CONTRACTOR PER

MANUFACTURER RECOMMENDATION.

HOT WATER SYSTEM CONSISTS OF TWO BOILERS (B-1A &B-1B) & TWO HOT WATER PUMPS (P-3A & P-3B) WITH VARIABLE FREQUENCY DRIVE AND ASSOCIATED APPURTENANCES SERVING BUILDING AIR HANDLING UNITS/ROOF

TOP UNITS PRE HEAT COILS & REHEAT VAV'S.

THE HOT WATER SYSTEM SHALL BE ENABLED BY THE HOT WATER SYSTEM CONTROLLER WHEN ANY ONE OF THE

FOLLOWING OCCUR:

1. AMBIENT TEMPERATURE IS BELOW 60°F (ADJ).

2. ONE (ADJ) CALL FOR HEATING.

3. ONE (ADJ) CALL FOR DEHUMIDIFICATION.

1. BOILER START/STOP:

HOT WATER SYSTEM SHALL START AND STOP THROUGH THE BAS OR THROUGH MANUAL OVERRIDE LOCATED ON BAS CONTROLLER. WHEN DESIRED, HOT WATER PUMP SHALL BE ENERGIZED ON AN ADJUSTABLE LEAD LAG SEQUENCE AS PROGRAMMED AT THE BAS AND, AFTER AN ADJUSTABLE DELAY OF 1 MINUTE AND PROOF STATUS OF WATER FLOW, AS SENSED BY DIFFERENTIAL PRESSURE SENSORS, SEQUENCING CONTROLLER SHALL BE ENABLED.

IF PRIMARY PUMP FAILS TO START, OR FAILS DURING NORMAL OPERATION, STAND-BY PUMP SHALL BE ENERGIZED AND OPERATE AS INDICATED BELOW AND AN AUDIBLE ALARM SHALL BE SENT TO CONTROLLER AND BAS WORK

STATION.

2. PUMP ALTERNATION:

PUMPS ALTERNATE TO EQUALIZE RUNTIME. SELECTION OF THE LEAD PUMP IS EVALUATED ON A WEEKLY BASIS.

THE PUMP WITH THE LEAST RUNTIME IS THE LEAD PUMP. THE ISOLATION VALVE FOR THE LEAD PUMP SHALL BE OPEN AND THE ISOLATION VALVE FOR THE LAG PUMP SHALL BE CLOSED. ONLY ONE HOT WATER PUMP WILL RUN AT A TIME. THE BAS USES CURRENT SWITCHES TO CONFIRM THE PUMPS ARE IN THE DESIRED STATE (ON OR OFF) AND GENERATES AN ALARM IF STATUS DEVIATES FROM BAS START/STOP CONTROL AFTER A DEFINED "PROOFING"

PERIOD (1 MIN ADJ). IF THE LEAD PUMP GOES INTO ALARM, THE LAG PUMP STARTS.

PUMP VARIABLE SPEED CONTROL: BAS CONTROLLER SHALL COMPARE DIFFERENTIAL PRESSURE (DPS-2 & 3), AS SENSED BY DIFFERENTIAL PRESSURE SENSOR (DPS-1), TO THE DESIRED DIFFERENTIAL PRESSURE SET POINT (ADJ), AS DETERMINED BY THE TAB CONTRACTOR, AND MODULATE PUMP OPERATING SPEED TO MAINTAIN SET POINT.

TAB CONTRACTOR SHALL MEASURE AND PROVIDE CONTRACTOR WITH VFD MINIMUM OUTPUT VECTOR GRAPH (MOVG) SETTINGS FOR EACH PUMP AND PUMP COMBINATION. THE MOVG WILL IDENTIFY MINIMUM PUMP/VFD SPEEDS REQUIRED TO MAINTAIN MINIMUM EQUIPMENT FLOW AT 5 INDIVIDUAL OPERATING DP SETTINGS.

3. BOILER ALTERNATION:

BOILERS ALTERNATE TO EQUALIZE RUNTIME. SELECTION OF THE LEAD BOILER IS EVALUATED ON A WEEKLY BASIS.

THE BOILER WITH THE LEAST RUNTIME IS THE LEAD BOILER. THE ISOLATION VALVE FOR THE LEAD BOILER SHALL BE

OPEN AND THE ISOLATION VALVE FOR THE LAG BOILER SHALL BE CLOSED.

4. BOILER SEQUENCING CONTROLLER (SC) INTERFACE:

EACH BOILER SHALL BE PROVIDED WITH A MANUAL "LOCAL/REMOTE" SWITCH WHICH SHALL BE NORMALLY OPERATED IN ITS "REMOTE" POSITION, WITH SWITCH IN "LOCAL" POSITION, BOILER SHALL BE CONTROLLED BY INTERNAL CONTROLS, WHICH SHALL MODULATE THE BOILER FIRING RATE TO MAINTAIN A FIXED SUPPLY WATER TEMPERATURE, INDEPENDENT OF THE SC. THE SWITCH IN "REMOTE" POSITION, BOILER TEMPERATURE CONTROL, HOT WATER TEMPERATURE RESET, BOILER FIRING RATE MODULATION AND BOILER OPERATIONAL SEQUENCING

SHALL BE CONTROLLED BY SC AS STATED BELOW.

5. BOILER CONTROL:

ON A FALL IN HOT WATER SUPPLY TEMPERATURE (TS-1), THE LEAD BOILER SHALL ENERGIZE AT LOW FIRING RATE.

FIRING RATE SHALL GRADUALLY MODULATE UPWARDS UNTIL BOILER SUPPLY WATER TEMPERATURE SET POINT IS REACHED. WHEN THE LEAD BOILER FIRING RATE REACHES 60% AND THE SYSTEM HOT WATER SUPPLY

TEMPERATURE (TS-1) IS STILL BELOW SET POINT, FOLLOWING AN ADJUSTABLE PERIOD OF 20 MINUTES, THE SECOND BOILER SHALL BE ENERGIZED AND MAINTAIN ALL BOILERS AT LOW FIRING RATE. FIRING RATE SHALL GRADUALLY MODULATE UPWARDS UNTIL BOILER SUPPLY WATER TEMPERATURE SET POINT IS REACHED. THIS SEQUENCE SHALL CONTINUE UNTIL THE BOILER SEQUENCING SYSTEM SHALL ENABLE THE REMAINING STANDBY BOILER. THE STANDBY BOILER'S ISOLATION VALVE SHALL BE INTERLOCKED WITH THE ASSOCIATED BOILER. IF ALL OF THE BOILERS ARE ENABLED & ADDITIONAL HEAT IS REQUIRED, BOILER CONTROLLER SHALL MODULATE ALL BOILERS IN UNISON AND THE FIRING RATE OF ALL BOILERS SHALL BE AT THE SAME PERCENTAGE AT ANY GIVEN TIME WHEN MULTIPLE BOILERS ARE OPERATING, UNTIL THE HOT WATER SUPPLY TEMPERATURE REACHES SET POINT, AS RESET

BY ADJUSTABLE OUTSIDE AIR TEMPERATURE RESET SCHEDULE.

WHEN THE SYSTEM LOAD DECREASES THAT THE DIFFERENTIAL BETWEEN HWS AND HWR TEMPERATURES IS LESS THAN 10°F (ADJ). THE BOILERS SHALL MODULATE DOWNWARDS THEN DE-ENERGIZED, ONE AT A TIME, IN THE SAME SEQUENCE AS THEY WERE ENERGIZED, COMPLETE WITH THE SAME INDEPENDENTLY ADJUSTABLE TIME DELAY BETWEEN BOILER DEACTIVATION. WHEN BOILERS ARE OPERATING, THE FIRING RATE OF EACH BOILER SHALL BE MODULATED IN PARALLEL (PER BOILER SC) TO MAINTAIN HOT WATER SUPPLY TEMPERATURE SET POINT AT TS-1, SUBJECT TO THE HIGH LIMIT SET POINT OF EACH BOILER SUPPLY WATER TEMPERATURE. IF ANY BOILER FAILS TO START, OR FAILS DURING NORMAL OPERATION, THE REMAINING BOILER(S) SHALL BE ENERGIZED AND OPERATE AS INDICATED ABOVE; AND AN AUDIBLE ALARM SHALL BE SENT TO THE CORRESPONDING SC AND TO THE BAS USER TERMINAL. THE BOILERS SHALL ROTATE LEAD LAG POSITION AUTOMATICALLY FROM THE BAS BASED ON A PRESET

ADJUSTABLE SCHEDULE.

9. HOT WATER TEMPERATURE RESET:

HOT WATER SUPPLY TEMPERATURE SET POINT SHALL BE AUTOMATICALLY RESET LINEARLY BASED ON OUTSIDE AIR

TEMPERATURE SENSOR (TS-OA) AND ACCORDING TO FOLLOWING SCHEDULE:

OA TEMP. HWS TEMP.

60°F (ADJ.) 95°F

30°F (ADJ.) 140°F

10. DIFFERENTIAL PRESSURE SET POINT:

10.1. DIFFERENTIAL SET POINT SHALL BE AUTOMATICALLY RESET BETWEEN 25PSI TO 5 PSI (ADJ.)

10.2. BMS SHALL MONITOR THE HEATING COIL CONTROL VALVE POSITION FOR ALL HEATING COILS. THE CRITICAL

ZONE SHALL BE UNIT THAT IS WIDEST OPEN TO THE COIL.

10.3. WHEN THE CRITICAL ZONE IS LESS THAN 85% OPEN, THE DIFFERENTIAL PRESSURE SET POINT SHALL BE

RESET DOWNWARD FROM IT'S MAXIMUM (CZ-1) SETTING AT 1 PSI EVERY 5 MINUTES (ESTABLISHED DURING TAB PROCESS -ADJ.). UNTIL THE CRITICAL ZONE IS GREATER THAN 95% OPEN OR THE MINIMUM DIFFERENTIAL

PRESSURE SET POINT OF 5 PSI IS REACHED. (ADJ.)

10.4. WHEN THE CRITICAL ZONE IS GREATER THAN 97% OPEN, THE REVERSE SHALL OCCUR AT 2 PSI EVERY 5

MINUTES UNTIL THE CRITICAL ZONE DAMPER REACHES 85%.

10.5. THIS SEQUENCE SHALL REQUIRE CONTRACTOR TO TUNE AND DOCUMENT OPERATION TO ENSURE PID

HUNTING AND OVERSHOOT DO NOT OCCUR.

11. GAS PRESSURE MONITORING:

EACH BOILER SC SHALL BE CAPABLE OF MONITORING AND MODULATING THE GAS PRESSURE OF ITS BOILER AND

SHALL DISPLAY THE GAS PRESSURE ON THE BAS WORKSTATION.

12. BOILER PLANT EMERGENCY SHUTDOWN:

THERE SHALL BE HARDWIRED INTERFACE BETWEEN THE BOILERS AND THE MANUAL MUSHROOM TYPE SHUT-OFF SWITCHES LOCATED AT EACH DOORWAY. NO BMS PROGRAMMING SHALL BE REQUIRED FOR THE INTERFACE. UPON DETECTING AN ALARM CONDITION AT ANY OF THE MANUAL SWITCHES, THE HARDWIRE INTERLOCK SHALL ACTIVATE A SAFETY SHUTDOWN OF ALL OF THE BOILERS AND AN ALARM SHALL BE GENERATED AT THE BMS INDICATING

BOILER PLANT EMERGENCY SHUTDOWN.

13. TEMPERATURE SET POINT OVERRIDE:

EACH SC SHALL BE CAPABLE OF BEING SET TO ACCEPT A VARYING HOT WATER SUPPLY TEMPERATURE SET POINT FROM BAS. BAS SHALL BE PROGRAMMED TO SEND HOT WATER SUPPLY TEMPERATURE SET POINT TO SC.

TS-1

TS-2

DDC CONTROLLER INPUT/OUTPUT SUMMARY

DDC CONTROLLER INPUT/OUTPUT LEGEND ANALOG IN ANALOG OUT BINARY IN BINARY OUT TRENDING GENERAL

CA

RB

ON

DI

OX

ID

E

CA

RB

ON

MO

NO

XI

DE

CU

RR

EN

T

FL

OW

HU

MI

DI

TY

MA

SS

-A

IR

F

LO

W

PO

SI

TI

VE

FE

ED

BA

CK

PR

ES

SU

RE

TE

MP

ER

AT

UR

E

VA

LV

E

MO

DU

LA

TI

ON

VA

RI

AB

LE

SP

EE

D

CO

NT

RO

L

CO

NT

RO

L P

OI

NT

AD

JU

ST

ME

NT

PE

RC

EN

T

OP

EN

SP

EE

D/

LE

VE

L/F

L

OW

FL

OW

S W

IT

CH

EN

D

SW

IT

CH

ST

AT

US

/P

RO

OF

AU

XI

LIA

RY

CO

NT

AC

TS

OP

EN

/C

LO

SE

ON

/O

FF

ST

AR

T/

ST

OP

HI

GH

/LO

W

MI

SC

EL

LA

NE

OU

S

TR

EN

D

EV

ER

Y

MI

NU

TE

S

TR

EN

D

EV

ER

Y

HO

UR

TR

EN

D

BY

EX

CE

PT

IO

N

AL

L P

OI

NT

LO

G

AL

AR

M

SU

MM

AR

Y

LO

G

ST

AT

US

SU

MM

AR

Y

LO

G

TI

ME

E

VE

NT

LO

G

AU

DI

BL

E

AL

AR

M

GR

AP

HI

C

DI

SP

LA

Y

EM

AI

L + T

EX

T

ME

SS

AG

E

CONTROL DEVICE

TAG ID DESCRIPTION

DPS-1 DIFFERENTIAL PRESSURE 1

DPS-2 DIFFERENTIAL PRESSURE 2

DPS-3 DIFFERENTIAL PRESSURE 3

CP-1 CHILLER PUMP 1

CP-2 CHILLER PUMP 2

CP-3 CHILLER PUMP 3

CP-4 CHILLER PUMP 4

FM-1 FLOW METER 1

FM-2 FLOW METER 2

VFD-1 VARIABLE FREQUENCY DRIVE 1

VFD-2 VARIABLE FREQUENCY DRIVE 2

VFD-3 VARIABLE FREQUENCY DRIVE 3

VFD-4 VARIABLE FREQUENCY DRIVE 4

TS-1 TEMPERATURE SENSOR 1

TS-2 TEMPERATURE SENSOR 2

TS-3 TEMPERATURE SENSOR 3

TS-4 TEMPERATURE SENSOR 4

TS-5 TEMPERATURE SENSOR 5

TS-6 TEMPERATURE SENSOR 6

TS-7 TEMPERATURE SENSOR 7

TS-8 TEMPERATURE SENSOR 8

V-1 VALVE MODULATION 1

V-2 VALVE MODULATION 2

ENTERING AND LEAVING CHILLED WATER

TEMPERATURE

ENTERING AND LEAVING CHILLED WATER PRESSURE

CHILLED WATER FLOW

SELF DIAGNOSTIC

OPERATION STATUS

OPERATION HOURS

NUMBER OF STARTS

COMPRESSOR STATUS ON/OFF

COMPRESSOR LOAD (%)

REFRIGERANT DISCHARGE & SUCTION PRESSURES

OIL PRESSURE

NUMBER OF PURGE CYCLES OVER THE LAST 7 DAYS

NOTE:

1. LOCKOUT ALARM WHEN UNIT IS DE-ENERGIZED. PROVIDE 15-MINUTE STARTUP DELAY PRIOR TO ENABLING ALARM.

2. NOT ALL VIRTUAL POINTS ARE SHOWN. PROVIDE ALL POINTS REQUIRED FOR SOFTWARE OPERATION.

AIR COOLED CHILLER WITH PRIMARY AND SECONDARY PUMPING POINT LIST TABLE

HOT WATER BOILER POINT LIST TABLE

CHILLED WATER SYSTEM CONTROL SEQUENCE:

a. SEQUENCE OF OPERATION - CHILLED WATER SYSTEM

1. CHILLED WATER SYSTEM IS MANUALLY STARTED AND RUNS CONTINUOUSLY.

2. PRIMARY CHILLED WATER PUMPS

a) WHEN CHILLED WATER SYSTEM IS STARTED, THE LEAD PRIMARY CHILLED WATER PUMP STARTS AND RUNS

CONTINUOUSLY.

(1) LEAD CHILLER IS ACTIVATED.

b) IN EVENT OF FAILURE OF LEAD PUMP, THE SECOND PUMP SHALL BE AUTOMATICALLY STARTED AND AN ALARM ANNUNCIATED AT THE OPERATOR'S WORKSTATION. LEAD PUMP MAY BE MANUALLY ROTATED FROM OPERATOR'S

WORKSTATION AND CAN BE SET TO ROTATE AUTOMATICALLY AT A FIXED TIME INTERVAL.

c) PROVIDE A DIFFERENTIAL PRESSURE SENSOR AT EACH CHILLER. SENSOR SHALL MEASURE PRESSURE DROP

BETWEEN CHILLED WATER SUPPLY AND RETURN TO EVAPORATOR.

d) PRESSURE SIGNAL FROM ACTIVE CHILLER SHALL CONTROL SPEED OF ACTIVE PRIMARY CHILLED WATER PUMP TO

MAINTAIN CONSTANT FLOW THROUGH CHILLER EVAPORATOR.

e) WHEN BOTH CHILLERS ARE OPERATING, PRESSURE SIGNALS FROM BOTH SENSORS SHALL BE AVERAGED, AND

AVERAGE SIGNAL SHALL BE USED TO CONTROL PUMP SPEED.

(1) BOTH PRIMARY PUMPS SHALL OPERATE. SPEED OF BOTH PUMPS SHALL BE CONTROLLED IN TANDEM TO

MAINTAIN CONSTANT FLOW THROUGH BOTH CHILLER EVAPORATORS.

3. CHILLERS

a) WHEN CHILLER IS ACTIVATED, ISOLATION VALVE OPENS FULLY.

b) WHEN FLOW IS VERIFIED BY DIFFERENTIAL PRESSURE SWITCH, CHILLER INTERNAL CONTROLS ARE ACTIVATED.

c) MANUFACTURER-PROVIDED INTERNAL CONTROL SYSTEM OPERATES COMPRESSORS AND CONDENSER FANS TO

MAINTAIN CHILLED WATER SETPOINT.

d) CHILLER PERFORMANCE IS LIMITED BY INTERNAL POWER LIMIT CONTROL. LIMIT CONTROL SETTING MAY BE

ADJUSTED BY THE DDC SYSTEM. SEE ICE STORAGE BELOW.

e) LEAD AND STANDBY CHILLER ARE MANUALLY SELECTED FROM THE OPERATOR'S WORKSTATION AND CAN BE SET

TO ROTATE AUTOMATICALLY AT A FIXED TIME INTERVAL.

4. SECONDARY CHILLED WATER PUMPS

a) WHEN CHILLED WATER SYSTEM IS STARTED, THE LEAD SECONDARY CHILLED WATER PUMP STARTS AND RUNS

CONTINUOUSLY.

(1) DDC PUMP CONTROLLER SHALL INTERFACE WITH EACH ADJUSTABLE FREQUENCY DRIVE BY STARTING AND STOPPING MOTOR AND BY TRANSMITTING A 4 TO 20 MA DC SIGNAL TO MODULATE PUMP SPEED FROM MINIMUM TO

FULL SPEED.

b) DDC CONTROLLER SHALL MODULATE ALL OPERATING PUMPS IN UNISON TO MAINTAIN WATER PRESSURE SETTING

AT DIFFERENTIAL PRESSURE SENSOR.

(1) ON A DECREASE IN SYSTEM DIFFERENTIAL PRESSURE, LEAD PUMP SHALL MODULATE TOWARD FULL SPEED. IF IT IS UNABLE TO MAINTAIN SYSTEM PRESSURED, SECOND PUMP SHALL BE STARTED AND PUMPS SHALL BE MODULATED

TOGETHER TO MAINTAIN SYSTEM PRESSURE.

(2) ON AN INCREASE IN SYSTEM PRESSURE THE REVERSE SHALL OCCUR.

(3) VALVE V-2 IS MODULATED TO MAINTAIN SECONDARY CHILLED WATER TEMPERATURE NO COLDER THAN 5.5 DEGREES C.WHEN BOTH SECONDARY CHILLED WATER PUMPS ARE OFF, V-2 CLOSES FULLY TO SECONDARY CIRCUIT, BYPASSING ALL PRIMARY WATER BACK TO CHILLER.

c) IN EVENT OF FAILURE OF A PUMP, THE NEXT PUMP IN SEQUENCE SHALL BE AUTOMATICALLY STARTED AND AN ALARM ANNUNCIATED AT THE OPERATOR'S WORKSTATION. LEAD PUMP MAY BE A MANUALLY ROTATED FROM

OPERATOR'S WORKSTATION.

d) IN EVENT OF COMMUNICATIONS NETWORK FAILURE, PUMP SPEED WILL BE CONTROLLED AT A FIXED SPEED.

5. BUILDING COOLING LOAD MONITOR

a) DDC SYSTEM MEASURES SECONDARY CHILLED WATER FLOW, CHILLED WATER SUPPLY TEMPERATURE TO

BUILDING, AND CHILLED WATER RETURN TEMPERATURE FROM BUILDING.

b) DDC SYSTEM CALCULATES CHILLED WATER DIFFERENTIAL TEMPERATURE ACCURATE TO ±0.5 DEGREES C, MULTIPLIES THIS BY FLOW RATE, AND DERIVES BUILDING COOLING LOAD ACCURATE TO ±5% OF PEAK CHILLER LOAD.

THIS VALUE MAY BE READ OUT ON THE OPERATOR'S WORKSTATION AND USED AS AN INPUT INTO OTHER

CALCULATIONS.

6. ICE STORAGE

a) ICE STORAGE SYSTEM OPERATES IN ONE OF THREE MODES:

1) MAKE ICE:

(a) MAKE ICE MODE STARTS WHEN ALL THE FOLLOWING CONDITIONS ARE MET:

(1) TIME PROGRAM INDICATES LOW ELECTRICAL DEMAND BILLING RATE IN EFFECT.

(2) ICE INVENTORY SENSOR INDICATES ICE INVENTORY IS NO GREATER THAN 80% OF MAXIMUM.

(b) SYSTEM MAY BE MANUALLY SET TO MAKE ICE MODE AT THE OPERATOR'S WORKSTATION.

2) USE ICE:

(a) USE ICE MODE STARTS WHEN ALL THE FOLLOWING CONDITIONS ARE MET:

(1) TIME PROGRAM INDICATES HIGH ELECTRICAL DEMAND BILLING RATE IN EFFECT.

(2) ICE INVENTORY SENSOR INDICATES ICE INVENTORY IS GREATER THAN 25% OF MAXIMUM.

(3) ONE OR BOTH SECONDARY CHILLED WATER PUMPS RUNNING.

(b) SYSTEM MAY BE MANUALLY SET TO USE ICE MODE AT THE OPERATOR'S WORKSTATION.

3) BYPASS:

(a) IF CONDITIONS ARE NOT MET FOR EITHER MAKE ICE OR USE ICE MODES, THE SYSTEM GOES INTO BYPASS MODE.

(b) SYSTEM MAY BE MANUALLY SET TO BYPASS MODE AT THE OPERATOR'S WORKSTATION.

b) MAKE ICE:

1) LEAD PRIMARY CHILLED WATER PUMP AND LEAD CHILLER RUN.

2) CHILLER CAPACITY CONTROL IS LIMITED ONLY BY POWER LIMITER AND INTERNAL SAFETIES AND IS NOT UNDER CONTROL OF CWS SETPOINT CONTROLLER. POWER LIMIT CONTROLLER IS SET FOR “LOW ELECTRIC DEMAND

RATE” SETPOINT (ADJUSTABLE FROM OPERATOR'S WORKSTATION).

3) ICE STORAGE CONTROL VALVE V-1 IS FULLY OPEN TO STORAGE TANKS.

4) SYSTEM OPERATES IN MAKE ICE MODE UNTIL ICE STORAGE DISCHARGE TEMPERATURE FALLS TO -2.2 DEGREES C.

5) SYSTEM THEN SWITCHES TO USE ICE MODE IF ALL REQUIRED CONDITIONS ARE MET, OTHERWISE IT SWITCHES TO

BYPASS.

c) USE ICE:

1) PRIMARY CHILLED WATER PUMPS AND CHILLERS OPERATE AS INDICATED ABOVE.

2) VALVE V-1 IS CONTROLLED TO MAINTAIN 5.5 DEGREES C PRIMARY CHILLED WATER SUPPLY TEMPERATURE.

3) CHILLER IS CONTROLLED TO MAINTAIN 5.5 DEGREES C CWS TEMPERATURE, AND OPERATION IS LIMITED BY POWER LIMITER. POWER LIMIT CONTROLLER IS SET TO “HIGH ELECTRIC DEMAND” SETPOINT (ADJUSTABLE FROM

OPERATOR'S WORKSTATION).

d) BYPASS:

1) VALVE V-1 REMAINS FULLY CLOSED TO STORAGE TANKS.

2) PRIMARY CHILLED WATER PUMPS AND CHILLERS OPERATE AS INDICATED ABOVE.

3) IF BOTH SECONDARY PUMPS ARE STOPPED, ALL PRIMARY PUMPS AND ALL CHILLERS ARE SHUT DOWN.

TS-3

TS-4

V-3

V-4

V-1

V-2

DPS-2

DPS-3

OA DUCT REFERENCE TEMPERATURE

SENSOR OVER BACNET FOR

OA TEMP

AHU 3/6 OA

TS-1 TS-2

TS-4

TS-3

TS-6

TS-5

V-2

FM-1

VFD-1

VFD-2

TS-7

TS-8

V-1

FM-2

Plotted By: ALAN TIU Plot Date: 9/28/2018 12:49:28 PM Saved By: BRUCE.MCINTOSH File: B:\SAG\2016\SAG16056.01\23-SAG16056.01_M\redone drawings\18759M-803.dwg Save Date: 11/28/2017 07:25 PM

SEQUENCE OF OPERATIONS

M-803

C

SP-1

OA

VP

EXHAUST

AIR

VP

LAB FUME HOOD EXHAUST WITH STANDBY FAN

(EF-1&2, EF-4&5, EF-10&11 EF-12&13)

C

LAB FUME

HOOD EXHAUST

OA

VP

EXHAUST

AIR

RETURN

AIR

FILTER HEATING COOLING

SUPPLY

AIR

SPACE

TEMPERATURE

T

H W

S H

W R

C W

S C

W R

C

FAN COIL UNITS

(FCU-1, 2, & 3)

GENERAL LABORATORY

(EF-3, 6, 14 & 15)

OA TEMP SENSOR

PROVIDE (1) PER

MECH. EQUIPMENT ROOM

LOCATE IN OA

INTAKE PLENUM

TS-1

SD-1

ES

NC

DP-1

FILTER HEATING

NO

TS-1

H W

S H

W R

Fs-1

COOLING DP-2 SUPPLY

FAN

SILENCER

S C

W S

S C

W R

FINAL

FILTER

HS-1

VFD-1 AIR FLOWRATE

SENSOR

TS-4

SD-2

SP-1

DSP-1

SUPPLY

AIR

ES

NC

C C

TS-2

TS-3

NC

C

LABORATORY AIR HANDLING UNIT

NO SCALE AHU - 1,2,4, AND 5

LAB FUME HOOD

EXHAUST

GENERAL LABORATORY SEQUENCE OF OPERATION:

1. GENERAL:

1.1. THE HIGH PLUME EXHAUST FAN SHALL HAVE ITS OWN FACTORY-INSTALLED CONTROL

SYSTEM WITH INDEPENDENT DDC AND ASSOCIATED CONTROLLER CONTAINED IN A FACTORY

INSTALLED UNIT-MOUNTED CONTROL PANEL. ALL PROGRAMS AND LOGIC REQUIRED FOR

THE FUNCTIONS AND SEQUENCES OF OPERATION DESCRIBED IN THE CONTRACT

DOCUMENTS SHALL RESIDE IN THE UNIT-MOUNTED CONTROLLER. THE CONTROLLERS AND

ASSOCIATED PROGRAMS SHALL BE CAPABLE OF OPERATING COMPLETELY INDEPENDENTLY

AND SHALL BE CONNECTED TO AND INTEROPERABLE WITH THE BUILDING AUTOMATION

SYSTEM (BAS) USING DDC.

1.2. ALL SENSORS, CONTROLLER SETTINGS, AND CONTROL MODULE SETTINGS SHALL BE TESTED

AND CALIBRATED IN ACCORDANCE WITH THE SEQUENCE OF OPERATION AS INDICATED.

1.3. ALL SET POINTS SHALL BE FIELD ADJUSTED DURING THE COMMISSIONING PROCESS TO

MEET THE REQUIREMENTS OF ACTUAL FIELD CONDITIONS.

1.4. ALL SET POINTS SHALL BE ADJUSTABLE (ADJ).

1.5. THE BAS SHALL MONITOR AND TREND ALL ANALOG VALUES EVERY 15 MINUTES. ALL

STATUSES SHALL BE TRENDED ON AN CHANGE OF VALUE. THE SYSTEM SHALL ARCHIVE THIS

INFORMATION FOR A MINIMUM OF 60 DAYS.

1.6. ALL POINTS SHALL BE PROVIDED WITH DYNAMIC COLOR DISPLAY.

2. CONTROL OPERATION:

2.1. WHEN THE SELECTOR SWITCH ON THE VFD IS INDEXED INTO THE “AUTO” POSITION, THE

EXHAUST FAN SHOULD BE CONTROLLED BY THE DDC EXHAUST FAN CONTROLLER VIA BAS.

WHEN THE SELECTOR SWITCH IS INDEXED INTO “HAND” POSITION, THE EXHAUST FAN MOTOR

SHALL BE ENERGIZED AND THE FAN SHALL RUN CONTINUOUSLY.

2.2. FANS SHALL BE ALTERNATED DAILY.

2.3. EXHAUST FAN SHALL RUN CONTINUOUSLY. BAS SHALL MONITOR DIFFERENTIAL PRESSURE

SENSORS LOCATED ON EACH FLOOR AND SHALL SELECT DP SENSOR REQUIRING THE

GREATEST DEMAND.

2.4. DISCHARGE AIR VELOCITY CONTROL: EXHAUST FAN CONTROLLER SHALL KEEP MONITORING

THE AIRFLOW RATE OF EACH EXHAUST OUTLET WITH AIRFLOW MEASURING STATION AND

MODULATE OUTSIDE AIR DAMPER(S) TO MAINTAIN THE FAN DISCHARGE VELOCITY AT ITS

MINIMUM 3500FPM. HOWEVER, THE OUTSIDE AIR DAMPER(S) SHALL CLOSE DURING START UP

OF THE FAN SYSTEM AND THEN SHALL MODULATE OPEN AS NEEDED AFTER EXHAUST STATIC

PRESSURE STABILIZES.

3. ALARMS:

3.1. ALARM: IF THE EXHAUST SYSTEM STATIC PRESSURE FALLS BELOW OR EXCEEDS THE SET

POINT FOR A PERIOD OF TIME IN EXCESS OF AN ADJUSTABLE ALARM DELAY PERIOD, A

STATIC PRESSURE ALARM CONDITION SHALL BE INDICATED TO EXHAUST FAN CONTROLLER

AND BAS WORKSTATION.

GENERAL LABORATORY SEQUENCE OF OPERATION:

1. GENERAL:

1.1. THE HIGH PLUME EXHAUST FAN SHALL HAVE ITS OWN FACTORY-INSTALLED CONTROL

SYSTEM WITH INDEPENDENT DDC AND ASSOCIATED CONTROLLER CONTAINED IN A FACTORY

INSTALLED UNIT-MOUNTED CONTROL PANEL. ALL PROGRAMS AND LOGIC REQUIRED FOR

THE FUNCTIONS AND SEQUENCES OF OPERATION DESCRIBED IN THE CONTRACT

DOCUMENTS SHALL RESIDE IN THE UNIT-MOUNTED CONTROLLER. THE CONTROLLERS AND

ASSOCIATED PROGRAMS SHALL BE CAPABLE OF OPERATING COMPLETELY INDEPENDENTLY

AND SHALL BE CONNECTED TO AND INTEROPERABLE WITH THE BUILDING AUTOMATION

SYSTEM (BAS) USING DDC.

1.2. ALL SENSORS, CONTROLLER SETTINGS, AND CONTROL MODULE SETTINGS SHALL BE TESTED

AND CALIBRATED IN ACCORDANCE WITH THE SEQUENCE OF OPERATION AS INDICATED.

1.3. ALL SET POINTS SHALL BE FIELD ADJUSTED DURING THE COMMISSIONING PROCESS TO

MEET THE REQUIREMENTS OF ACTUAL FIELD CONDITIONS.

1.4. ALL SET POINTS SHALL BE ADJUSTABLE (ADJ).

1.5. THE BAS SHALL MONITOR AND TREND ALL ANALOG VALUES EVERY 15 MINUTES. ALL

STATUSES SHALL BE TRENDED ON AN CHANGE OF VALUE. THE SYSTEM SHALL ARCHIVE THIS

INFORMATION FOR A MINIMUM OF 60 DAYS.

1.6. ALL POINTS SHALL BE PROVIDED WITH DYNAMIC COLOR DISPLAY.

2. CONTROL OPERATION:

2.1. WHEN THE SELECTOR SWITCH ON THE VFD IS INDEXED INTO THE “AUTO” POSITION, THE

EXHAUST FAN SHOULD BE CONTROLLED BY THE DDC EXHAUST FAN CONTROLLER VIA BAS.

WHEN THE SELECTOR SWITCH IS INDEXED INTO “HAND” POSITION, THE EXHAUST FAN MOTOR

SHALL BE ENERGIZED AND THE FAN SHALL RUN CONTINUOUSLY.

2.2. FANS SHALL BE ALTERNATED DAILY.

2.3. A MINIMUM OF ONE EXHAUST FAN SHALL RUN CONTINUOUSLY. BAS SHALL MONITOR

DIFFERENTIAL PRESSURE SENSORS LOCATED ON EACH FLOOR AND SHALL SELECT DP

SENSOR REQUIRING THE GREATEST DEMAND.

2.5. FAN CUT-IN: IF THE EXHAUST SYSTEM STATIC PRESSURE SET POINT CANNOT BE MAINTAINED WITH ONE EXHAUST FAN AT MAXIMUM FLOW RATES FOR A TIME INTERVAL OF 1 MINUTE (ADJ), EXHAUST FAN CONTROLLER SHALL START THE SECOND EXHAUST FAN. AFTER A TIME DELAY

OF 15 SECONDS (ADJ) WITH ITS MINIMUM SPEED OF 15 HZ (ADJ), THE FAN CONTROLLER

SHALL OPEN ITS ON-OFF AUTOMATIC AIR DAMPER GRADUALLY. VFD SHOULD NOT RAMP

ABOVE ITS MINIMUM FAN SPEED SET POINT UNTIL THE DAMPER HAS PROVEN OPEN. WHEN

THE DAMPER IS FULLY OPEN AS SENSED BY THE END SWITCH AT THE DAMPER, RECEIVING A

SIGNAL FROM THE EXHAUST SYSTEM STATIC PRESSURE SENSOR(S), THE EXHAUST FAN

CONTROLLER SHALL MODULATE THE FAN MOTOR SPEEDS VIA VFDS IN UNISON TO MAINTAIN

THE STATIC PRESSURE SET POINT.

2.6. FAN CUT-OUT: IF THE STATIC PRESSURE IS AT SET POINT AND TWO FANS ARE ON AND AT

64% SPEED (ADJ) FOR A TIME INTERVAL OF 5 MINUTES, THE EXHAUST FAN CONTROLLER

SHALL STOP THE SECOND EXHAUST FAN.

2.7. DISCHARGE AIR VELOCITY CONTROL: EXHAUST FAN CONTROLLER SHALL KEEP MONITORING

THE AIRFLOW RATE OF EACH EXHAUST OUTLET WITH AIRFLOW MEASURING STATION AND

MODULATE OUTSIDE AIR DAMPER(S) TO MAINTAIN THE FAN DISCHARGE VELOCITY AT ITS

MINIMUM 3500FPM. HOWEVER, THE OUTSIDE AIR DAMPER(S) SHALL CLOSE DURING START UP

OF THE FAN SYSTEM AND THEN SHALL MODULATE OPEN AS NEEDED AFTER EXHAUST STATIC

PRESSURE STABILIZES.

3. ALARMS:

3.1. ALARM: IF THE EXHAUST SYSTEM STATIC PRESSURE FALLS BELOW OR EXCEEDS THE SET

POINT FOR A PERIOD OF TIME IN EXCESS OF AN ADJUSTABLE ALARM DELAY PERIOD, A

STATIC PRESSURE ALARM CONDITION SHALL BE INDICATED TO EXHAUST FAN CONTROLLER

AND BAS WORKSTATION.

LABORATORY AIR HANDLING UNIT SEQUENCE OF OPERATION:

1. GENERAL:

1.1. THE AIR HANDLING UNIT (AHU) SHALL HAVE ITS OWN FACTORY-INSTALLED CONTROL SYSTEM WITH INDEPENDENT DDC AND ASSOCIATED CONTROLLER CONTAINED IN A FACTORY INSTALLED UNIT-MOUNTED CONTROL PANEL. ALL PROGRAMS AND LOGIC REQUIRED FOR THE FUNCTIONS AND SEQUENCES OF OPERATION DESCRIBED IN THE CONTRACT DOCUMENTS SHALL RESIDE IN THE UNIT-MOUNTED CONTROLLER. THE CONTROLLERS AND ASSOCIATED PROGRAMS SHALL BE CAPABLE OF OPERATING COMPLETELY INDEPENDENTLY AND SHALL BE CONNECTED TO AND INTEROPERABLE WITH THE BUILDING AUTOMATION SYSTEM (BAS) USING DDC.

CONTROLLER SHALL BE BACNET COMPLIANT.

1.2. ALL SENSORS, CONTROLLER SETTINGS, AND CONTROL MODULE SETTINGS SHALL BE TESTED AND CALIBRATED IN ACCORDANCE WITH THE SEQUENCE OF OPERATION

AS INDICATED.

1.3. ALL SET POINTS SHALL BE FIELD ADJUSTED DURING THE COMMISSIONING PROCESS TO MEET THE REQUIREMENTS OF ACTUAL FIELD CONDITIONS.

1.4. ALL SET POINTS SHALL BE ADJUSTABLE (ADJ).

1.5. PROVIDE HAND-OFF-AUTO ON ALL MAJOR EQUIPMENT.

1.6. THE BAS SHALL MONITOR AND TREND ALL ANALOG VALUES EVERY 15 MINUTES. ALL STATUSES SHALL BE TRENDED ON AN CHANGE OF VALUE. THE SYSTEM SHALL

ARCHIVE THIS INFORMATION FOR A MINIMUM OF 60 DAYS.

1.7. ALL POINTS SHALL BE PROVIDED WITH DYNAMIC COLOR DISPLAY

2. START/STOP:

2.1. THE UNIT SHALL BE STARTED AND STOPPED, BASED ON A TIME OF DAY SCHEDULE, THROUGH THE PROGRAM LOGIC RESIDING IN THE CONTROL SYSTEM AND AT THE

CONTROLLER, OR THROUGH OVERRIDE LOCATED ON THE CONTROLLER AND AT THE BAS.

3. COOLING AND HEATING:

3.1. THE CHILLED WATER AND HOT WATER CONTROL VALVES SHALL MODULATE TO RESET DISCHARGE AIR TEMPERATURE BETWEEN 55°F - 65°F BASED ON OUTSIDE AIR

TEMPERATURE.

4. SUPPLY FAN:

4.1. THE SUPPLY FANS SHALL OPERATE CONTINUOUSLY.

4.2. BAS SHALL MONITOR DIFFERENTIAL PRESSURE SENSORS LOCATED ON EACH FLOOR AND SHALL SELECT DP SENSOR REQUIRING THE GREATEST DEMAND.

4.3. ALL FOUR SUPPLY FANS IN EACH AHU SHALL OPERATE AT SAME SPEED.

4.4. AHU-1 & AHU-2 SUPPLY AIR FANS SHALL OPERATE AT SAME SPEED. EACH VFD SHALL MODULATE TO MAINTAIN A STATIC PRESSURE SET POINT.

4.5. AHU-3 & AHU-4 SUPPLY AIR FANS SHALL OPERATE AT SAME SPEED. EACH VFD SHALL MODULATE TO MAINTAIN A STATIC PRESSURE SET POINT.

5. SUPPLY AIR DUCT STATIC PRESSURE SET POINT:

5.1. THE BAS SHALL CONTINUOUSLY MONITOR THE DAMPER POSITION OF ALL VAV TERMINAL UNITS FLOOR BY FLOOR. THE SUPPLY AIR DUCT STATIC PRESSURES SHALL BE SENSED BY STATIC PRESSURE SENSORS LOCATED 3/4 DISTANCE DOWN EACH FLOOR RUN. SPECIFIC LOCATIONS OF DIFFERENTIAL SENSORS SHALL BE RECORDED ON AS-BUILTS AND SHOW ON BAS GRAPHICS. RECORD AND CLEARLY LABEL THE STATIC PRESSURE SET POINTS, FROM THE TAB PROCEDURE, FOR FUTURE REFERENCE. INITIAL STATIC PRESSURE SET POINT SHALL BE 1.5" (ADJ). MAXIMUM AND MINIMUM SETTING DEFINED BY TAB CONTRACTOR.

5.2. WHEN ANY VAV TERMINAL UNIT IS MORE THAN 95% (ADJ) OPEN, THE ASSOCIATED SUPPLY AIR DUCT STATIC PRESSURE SET POINT SHALL BE RESET UPWARD BY 5% (ADJ) OF THE MAXIMUM SYSTEM STATIC PRESSURE SET POINT AT A FREQUENCY OF 10 MINUTES (ADJ) UNTIL NO DAMPER IS MORE THAN 95% OPEN OR THE STATIC PRESSURE SET POINT HAS RESET UPWARD TO THE SYSTEM MAXIMUM SETTING OR THE VFD IS AT ITS MAXIMUM SETTING.

5.3. WHEN ALL VAV AIR DAMPERS ARE LESS THAN 85% (ADJ) OPEN, THEN THE ASSOCIATED SUPPLY AIR DUCT STATIC PRESSURE SET POINT SHALL BE RESET DOWNWARD

BY 5% (ADJ) OF THE CURRENT SYSTEM STATIC PRESSURE SET POINT AT A FREQUENCY OF 10 MINUTES (ADJ) UNTIL ANY DAMPER IS MORE THAN 85% OPEN OR THE STATIC PRESSURE SET POINT HAS RESET DOWNWARD TO THE SYSTEM MINIMUM SETTING OR THE VFD IS AT ITS MINIMUM SETTING.

5.4. THE CONTROL BANDS, SET POINT INCREMENT VALUES, SET POINT DECREMENT VALUES AND ADJUSTMENT FREQUENCIES SHALL BE ADJUSTED TO MAINTAIN STATIC PRESSURE OPTIMIZATION SETPOINT WITH STABLE SYSTEM CONTROL AND MAXIMUM COMFORT CONTROL.

6. EXHAUST AIR DUCT STATIC PRESSURE SET POINT:

6.1. THE BAS SHALL CONTINUOUSLY MONITOR THE DAMPER POSITION OF ALL VAV TERMINAL UNITS FLOOR BY FLOOR. THE EXHAUST AIR DUCT STATIC PRESSURES SHALL BE SENSED BY STATIC PRESSURE SENSORS LOCATED 3/4 DISTANCE DOWN EACH FLOOR RUN. SPECIFIC LOCATIONS OF DIFFERENTIAL SENSORS SHALL BE RECORDED ON AS-BUILTS AND SHOW ON BAS GRAPHICS. RECORD AND CLEARLY LABEL THE STATIC PRESSURE SET POINTS, FROM THE TAB PROCEDURE, FOR

FUTURE REFERENCE. INITIAL STATIC PRESSURE SET POINT SHALL BE 1.5" (ADJ).

6.2. WHEN ANY VAV TERMINAL UNIT IS MORE THAN 95% (ADJ) OPEN, THE ASSOCIATED EXHAUST AIR DUCT STATIC PRESSURE SET POINT SHALL BE RESET UPWARD BY 5% (ADJ) OF THE CURRENT SYSTEM STATIC PRESSURE SET POINT AT A FREQUENCY OF 10 MINUTES (ADJ) UNTIL NO DAMPER IS MORE THAN 95% OPEN OR THE STATIC PRESSURE SET POINT HAS RESET UPWARD TO THE SYSTEM MAXIMUM SETTING OR THE VFD IS AT ITS MAXIMUM SETTING.

6.3. WHEN ALL VAV AIR DAMPERS ARE LESS THAN 85% (ADJ) OPEN, THE THE ASSOCIATED EXHAUST AIR DUCT STATIC PRESSURE SET POINT SHALL BE RESET DOWNWARD BY 5% (ADJ) OF THE CURRENT SYSTEM STATIC PRESSURE SET POINT AT A FREQUENCY OF 10 MINUTES (ADJ) UNTIL ANY DAMPER IS MORE THAN 85% OPEN OR THE STATIC PRESSURE SET POINT HAS RESET DOWNWARD TO THE SYSTEM MINIMUM SETTING OR THE VFD IS AT ITS MINIMUM SETTING.

6.4. THE CONTROL BANDS, SET POINT INCREMENT VALUES, SET POINT DECREMENT VALUES AND ADJUSTMENT FREQUENCIES SHALL BE ADJUSTED TO MAINTAIN STATIC PRESSURE OPTIMIZATION SETPOINT WITH STABLE SYSTEM CONTROL AND MAXIMUM COMFORT CONTROL.

7. FREEZE PROTECTION:

7.1. A HARDWIRED, LOW LIMIT TEMPERATURE SWITCH SHALL BE ELECTRICALLY INTERLOCKED WITH THE VARIABLE SPEED DRIVE. IF THE LOW LIMIT TEMPERATURE SWITCH IS TRIPPED 38.0 DEG. F (ADJ.), THE OUTSIDE AIR DAMPER SHALL CLOSE, ALL VALVES SHALL OPEN TO 100% AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. A MANUAL RESET OF THE LOW LIMIT TEMPERATURE SWITCH SHALL BE REQUIRED TO RESTART THE FAN.

8. ALARMS:

8.1. FREEZE PROTECTION: THE FREEZE PROTECTION SEQUENCE SHALL BE INITIATED AND AN AN ALARM SHALL BE GENERATED UPON RECEIVING A FREEZESTAT STATUS.

8.2. HIGH STATIC PRESSURE SHUTDOWN: THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM WHEN THE SUPPY AIR STATIC PRESSURE IS ABOVE MAXIMUM STATIC

PRESSURE.

8.3. SMOKE DETECTION: THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING A AIR SMOKE STATUS AND ISSUE AN ALARM TO THE BUILDING FIRE

ALARM SYSTEM.

8.4. SUPPLY FAN FAILURE: COMMANDED ON BUT THE STATUS IS OFF.

8.5. HIGH SUPPLY AIR STATIC PRESSURE: IF THE SUPPLY AIR STATIC PRESSURE IS 25% (ADJ) GREATER THAN SET POINT.

8.6. LOW SUPPLY AIR STATIC PRESSURE: IF THE SUPPLY AIR STATIC PRESSURE IS 25% (ADJ) LESS THAN SET POINT.

8.7. .EXHAUST FAN FAILURE: COMMANDED ON BUT THE STATUS IS OFF.

8.8. SUPPLY FAN VFD FAULT.

8.9. HIGH SUPPLY AIR TEMPERATURE: IF THE SUPPLY AIR TEMPERATURE IS 5°F (ADJ) GREATER THAN SET POINT.

8.10. LOW SUPPLY AIR TEMPERATURE: IF THE SUPPLY AIR TEMPERATURE IS LESS THAN 45°F (ADJ).

8.11. HIGH RETURN AIR HUMIDITY: IF THE RETURN AIR HUMIDITY IS GREATER THAN 70% (ADJ).

8.12. LOW RETURN AIR HUMIDITY: IF THE RETURN AIR HUMIDITY IS LESS THAN 30% (ADJ).

8.13. ALL FILTERS: FILTER DIFFERENTIAL PRESSURE EXCEEDS A USER DEFINABLE LIMIT (ADJ).

8.14. HIGH PRESSURE WATER HUMIDIFICATION SYSTEM PUMP VFD VAULT.

8.15. GENERAL ALARM FROM HIGH PRESSURE WATER HUMIDIFICATION SYSTEM CONTROL PANEL.

FAN COIL UNIT SEQUENCE OF OPERATION:

THE OPERATION MODE SHALL BE DETERMINED THROUGH BAS WITH MANUAL OVERRIDE.

A. OPERATION MODE:

1. THE UNIT FAN SHALL BE ENERGIZED.

2. THE HEATING COIL VALVE SHALL MODULATE IN SEQUENCE TO MAINTAIN A 70°F SPACE HEATING SET-POINT.

3. THE COOLING COIL VALVE SHALL MODULATE IN SEQUENCE TO MAINTAIN A 75°F SPACE COOLING SET-POINT.

4. THE CONTROLLER SHALL PREVENT:

a. THE HEATING SET-POINT FROM EXCEEDING THE COOLING SET-POINT MINUS 5°F (I.E. THE MINIMUM DEAD-BAND

SHALL BE 5°F).

DDC CONTROLLER INPUT/OUTPUT SUMMARY

DDC CONTROLLER INPUT/OUTPUT LEGEND ANALOG IN ANALOG OUT BINARY IN BINARY OUT TRENDING GENERAL

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E

CONTROL DEVICE

TAG ID DESCRIPTION

AFMS-1 OUTDOOR AIR FLOW MONITORING STATION

DA-1 OUTDOOR AIR DAMPER

VFD-1 VARIABLE FREQUENCY DRIVE 1

DP-1 DIFFERENTIAL PRESSURE 1

DP-2 DIFFERENTIAL PRESSURE 2

FS-1 AIR FREEZE STAT

HS-1 HUMIDITY SENSOR 1

HS-2 HUMIDITY SENSOR 2

HS-3 HUMIDITY SENSOR 3

MP-1 AHU MICROPROCESSOR

SD-1 OUTSIDE AIR SMOKE DETECTOR

SD-2 SUPPLY AIR SMOKE DETECTOR

SP-1 SUPPLY AIR DUCT STATIC PRESSURE

HS-1 HIGH STATIC SAFETY SENSOR

DSP-1 DOWN DUCT STATIC PRESSURE

TS-1 TEMPERATURE SENSOR 1

TS-2 TEMPERATURE SENSOR 2

TS-3 TEMPERATURE SENSOR 3

TS-4 TEMPERATURE SENSOR 4

V-1 VALVE MODULATION 1

V-2 VALVE MODULATION 2

FUME HOOD

PT-1 SUPPLY AIR DUCT STATIC PRESSURE

VFD-1 VARIABLE FREQUENCY DRIVE 1

VFD-2 VARIABLE FREQUENCY DRIVE 2

VFD-3 VARIABLE FREQUENCY DRIVE 3

AFMS-1 EXHAUST AIR FLOW MONITORING STATION 1

AFMS-2 EXHAUST AIR FLOW MONITORING STATION 2

AFMS-3 EXHAUST AIR FLOW MONITORING STATION 3

DA-1 EXHAUST AIR DAMPER 1

DA-2 EXHAUST AIR DAMPER 2

DA-3 EXHAUST AIR DAMPER 3

DA-4 OUTSIDE AIR DAMPER 4

NOTE:

1. LOCKOUT ALARM WHEN UNIT IS DE-ENERGIZED. PROVIDE 15-MINUTE STARTUP DELAY PRIOR TO ENABLING ALARM.

2. NOT ALL VIRTUAL POINTS ARE SHOWN. PROVIDE ALL POINTS REQUIRED FOR SOFTWARE OPERATION.

VAV AHU 100% OUTSIDE AIR WITH FUME HOODS

DDC CONTROLLER INPUT/OUTPUT SUMMARY

DDC CONTROLLER INPUT/OUTPUT LEGEND ANALOG IN ANALOG OUT BINARY IN BINARY OUT TRENDING GENERAL

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LA

NE

OU

S

TR

EN

D

EV

ER

Y

MI

NU

TE

S

TR

EN

D

EV

ER

Y

HO

UR

TR

EN

D

BY

EX

CE

PT

IO

N

AL

L P

OI

NT

LO

G

AL

AR

M

SU

MM

AR

Y

LO

G

ST

AT

US

SU

MM

AR

Y

LO

G

TI

ME

E

VE

NT

LO

G

AU

DI

BL

E

AL

AR

M

GR

AP

HI

C

DI

SP

LA

Y

EM

AI

L + T

EX

T

ME

SS

AG

E

CONTROL DEVICE

TAG ID DESCRIPTION

VFD-1 VARIABLE FREQUENCY DRIVE 1

VFD-2 VARIABLE FREQUENCY DRIVE 2

SP-1 STATIC PRESSURE SENSOR

VS-1 EXHAUST VALVE 1

VS-2 EXHAUST VALVE 2

NOTE:

1. LOCKOUT ALARM WHEN UNIT IS DE-ENERGIZED. PROVIDE 15-MINUTE STARTUP DELAY PRIOR TO ENABLING ALARM.

2. NOT ALL VIRTUAL POINTS ARE SHOWN. PROVIDE ALL POINTS REQUIRED FOR SOFTWARE OPERATION.

AFMS-1

DA-1

V-1 V-2

DA-1

VS-1

VS-2

VFD-2

VFD-1

EXHAUST

AIR

BASED ON

AHU (LAB)

DA-1

BASED ON

AHU (LAB)

SP-1

DDC CONTROLLER INPUT/OUTPUT SUMMARY

DDC CONTROLLER INPUT/OUTPUT LEGEND ANALOG IN ANALOG OUT BINARY IN BINARY OUT TRENDING GENERAL

CA

RB

ON

DI

OX

ID

E

CA

RB

ON

MO

NO

XI

DE

CU

RR

EN

T

FL

OW

HU

MI

DI

TY

MA

SS

-A

IR

F

LO

W

PO

SI

TI

VE

FE

ED

BA

CK

PR

ES

SU

RE

TE

MP

ER

AT

UR

E

VA

LV

E

MO

DU

LA

TI

ON

VA

RI

AB

LE

SP

EE

D

CO

NT

RO

L

CO

NT

RO

L P

OI

NT

AD

JU

ST

ME

NT

PE

RC

EN

T

OP

EN

SP

EE

D/

LE

VE

L/F

L

OW

FL

OW

S W

IT

CH

EN

D

SW

IT

CH

ST

AT

US

/P

RO

OF

AU

XI

LIA

RY

CO

NT

AC

TS

OP

EN

/C

LO

SE

ON

/O

FF

ST

AR

T/

ST

OP

HI

GH

/LO

W

MI

SC

EL

LA

NE

OU

S

TR

EN

D

EV

ER

Y

MI

NU

TE

S

TR

EN

D

EV

ER

Y

HO

UR

TR

EN

D

BY

EX

CE

PT

IO

N

AL

L P

OI

NT

LO

G

AL

AR

M

SU

MM

AR

Y

LO

G

ST

AT

US

SU

MM

AR

Y

LO

G

TI

ME

E

VE

NT

LO

G

AU

DI

BL

E

AL

AR

M

GR

AP

HI

C

DI

SP

LA

Y

EM

AI

L + T

EX

T

ME

SS

AG

E

CONTROL DEVICE

TAG ID DESCRIPTION

VFD-1 VARIABLE FREQUENCY DRIVE 1

VFD-2 VARIABLE FREQUENCY DRIVE 2

SP-1 STATIC PRESSURE SENSOR

VS-1 EXHAUST VALVE 1

VS-2 EXHAUST VALVE 2

NOTE:

1. LOCKOUT ALARM WHEN UNIT IS DE-ENERGIZED. PROVIDE 15-MINUTE STARTUP DELAY PRIOR TO ENABLING ALARM.

2. NOT ALL VIRTUAL POINTS ARE SHOWN. PROVIDE ALL POINTS REQUIRED FOR SOFTWARE OPERATION.

Plotted By: ALAN TIU Plot Date: 9/28/2018 12:49:34 PM Saved By: ALAN.TIU File: B:\SAG\2016\SAG16056.01\23-SAG16056.01_M\redone drawings\18759M-804 & 805.dwg Save Date: 09/28/2018 12:18 PM

M-804

NC

RELIEF AIR

C

NO

HEATINGFILTER

TS-1

NO

MIN. OA

MAX. OA

NC

NC

DP-1

H W

S H

W R

COOLING

VFD-1

S C

W S

S C

W

R TS-4

NC

FS-1

TS-2

C

C

C

OUTSIDE AIR

W/WIND SCREENSUPPLY

AIR

DSP-1

SP-1

SD-2

NC

ES

SP-2

HS-2

SD-1

TS-5

SILENCER

DP-2

RETURN

FAN

SUPPLY

FANDP-3

SILENCER

VFD

AIR FLOW RATE

SENSOR(TYP.)

TS-6

HS-1

ADMINISTRATION AIR HANDLING UNITS - AHU-3 & 6

TO BUILDING

AUTOMATION

SYSTEM

LOW AIR FLOW ALARM

BY HOOD SUPPLIER

FUME HOOD AND BIO SAFETY

CABINET ALARM

FUME HOOD AND BIO SAFETY CABINET

SUPPLY AIR

C

NO

H W

R H

W S

T

SPACE

TEMEPERATURE

ROOM EXHAUST

AIR DUCT BRANCH

ROOM RETURN

AIR REGISTER

NO

RA

EXHAUST AIR

DUCT MAIN

VARIABLE VOLUME AIR TERMINAL UNITS

SERVING ROOMS WITH LABS

NO SCALE

VARIABLE VOLUME AIR TERMINAL UNITS CONSTANT

VOLUME AIR TERMINAL UNITS - OFFICES

NO SCALE

H W

R H

W S

T

SPACE

TEMEPERATURE

SUPPLY AIR

CT

RELIEF

AIR

RELIEF

AIR

M

M

M

M

OUTSIDE

AIR

OUTSIDE

AIR

STAIR VENTILATION

NO SCALE

T

SPACE

TEMEPERATURE

H W

R

H W

S

LOW TEMPERATURE

THERMOSTAT

UNIT HEATER

NO SCALE

RELIEF

AIR

SPACE

TEMPERATURE

T

SUPPLY FAN

WHERE SHOWN

M M

MECHANICAL ROOM EXHAUST

NO SCALE

OUTSIDE

AIR

AIR HANDLING UNIT SEQUENCE OF OPERATIONS:

THE AIR HANDLING UNIT SHALL HAVE ITS OWN FACTORY-INSTALLED CONTROL SYSTEM WITH INDEPENDENT DDC CONTROLS AND ASSOCIATED CONTROLLER CONTAINED IN A UNIT-MOUNTED CONTROL PANEL. ALL PROGRAMS AND LOGIC REQUIRED FOR THE FUNCTION AND SEQUENCE OF OPERATION DESCRIBED IN THE CONTRACT DOCUMENT SHALL RESIDE IN THE UNIT-MOUNTED CONTROLLER. THE CONTROLLERS AND ASSOCIATED PROGRAMS SHALL BE CAPABLE OF OPERATING COMPLETELY INDEPENDENT. CONTRACTOR SHALL PROVIDE ALL NECESSARY CONTROL DEVICES, CONTROLLERS AND PROGRAMMING AS REQUIRED TO ACCOMPLISH THE FOLLOWING SEQUENCE OF OPERATIONS:

THE AIR HANDLING UNIT SHALL OPERATE IN OCCUPIED AND UNOCCUPIED MODE ACCORDING TO THE BMS SCHEDULE.

1. MORNING WARM UP/PRE-COOL:

ON A TRANSITION FROM UNOCCUPIED OPERATION TO OCCUPIED OPERATION THE UNIT SHALL BRING ZONES TO OCCUPIED SET POINTS. THE OUTSIDE AIR & EXHAUST AIR DAMPERS SHALL BE CLOSED. THE RE-CIRCULATION DAMPER SHALL MODULATE OPEN. THE HEATING AND CHILLED WATER VALVES SHALL MODULATE TO MAINTAIN THE SET POINT. THE SUPPLY FAN SHALL ENABLE.

DURING MORNING WARM-UP, IF DEHUMIDIFICATION SET POINT HAS NOT BEEN SATISFIED, UNIT SHALL CONTINUE MORNING WARM-UP CYCLE.

2. OPTIMAL START:

THE UNIT SHALL USE AN OPTIMAL START ALGORITHM FOR MORNING WARM-UP/PRE-COOL. THIS ALGORITHM SHALL MINIMIZE THE UNOCCUPIED WARM-UP PERIOD WHILE STILL ACHIEVING COMFORT CONDITIONS BY THE START OF SCHEDULED OCCUPIED PERIOD THROUGH SPACE TEMPERATURE SENSOR (TS). THE BMS SHALL STAGGER THE START UP OF EQUIPMENT TO AVOID UNNECESSARY ELECTRICAL SPIKES.

3. OPTIMAL STOP:

THE UNIT SHALL USE AN OPTIMAL STOP ALGORITHM FOR SHUTTING DOWN THE UNIT BEFORE SCHEDULED UNOCCUPIED OPERATION TO

ALLOW ZONES FOR UNOCCUPIED OPERATION WITHOUT AFFECTING THE OCCUPIED SET POINTS.

4. TIMED OVERRIDE:

A TIMED LOCAL OVERRIDE CONTROL SHALL ALLOW AN OCCUPANT TO OVERRIDE THE SCHEDULE AT A TERMINAL UNIT SENSOR WITHIN THE SPACES SERVED BY THE ASSOCIATED UNIT ON THE THERMOSTAT AND PLACE THE UNIT INTO AN OCCUPIED MODE FOR AN ADJUSTABLE PERIOD OF TIME TO BE COORDINATED WITH THE FACILITIES MANAGEMENT AT THE EXPIRATION OF THIS TIME, CONTROL OF THE UNIT SHALL

AUTOMATICALLY RETURN TO THE SCHEDULE.

5. OCCUPIED OPERATIONS:

5.1. WHEN ONE OR MORE OF THE ASSOCIATED VAV TERMINAL UNITS ARE IN OCCUPIED OPERATION. THE VAV TERMINAL UNIT SHALL BE

ENABLED.

5.2. THE SUPPLY AND RETURN FAN SHALL START, AND THE OUTSIDE AIR, RETURN AIR & EXHAUST AIR DAMPER SHALL OPEN. ALL

FUNCTIONS SHALL BE ENABLED.

6. SUPPLY DUCT STATIC PRESSURE CONTROL:

6.1. THE BAS SHALL CONTINUOUSLY MONITOR THE DAMPER POSITION OF ALL VAV TERMINAL UNITS ASSOCIATED WITH THE UNIT.

6.2. WHEN ANY VAV TERMINAL UNIT DAMPERS IS MORE THAN 95% (ADJ.) OPEN, THE SUPPLY FAN DUCT STATIC PRESSURE SET POINT SHALL BE RESET UPWARD BY 0.2 IN.W.C. (ADJ.) UNTIL NO DAMPER IS MORE THAN 95% OPEN. THE SYSTEM MAXIMUM DUCT PRESSURE SET POINT IS AT THE MAXIMUM SETTING OR THE SUPPLY FAN VFD IS AT THE MAXIMUM SETTING.

6.3. WHEN ALL VAV TERMINAL DAMPERS ARE LESS THAN 75% (ADJ.) OPEN, THE SUPPLY FAN DUCT STATIC PRESSURE SET POINT SHALL BE RESET DOWNWARD BY 0.1 IN.W.C. (ADJ.) AT A FREQUENCY OF 15 (ADJ.) MINUTES. UNTIL AT LEAST 1 DAMPER IS MORE THAN 75% OPEN. THE SYSTEM MINIMUM DUCT PRESSURE SET POINT IS AT THE MINIMUM SETTING OR THE SUPPLY FAN VFD IS AT THE MINIMUM

SETTING TO BE DETERMINED BY TAB CONTRACTOR.

6.4. THE BAS SHALL HAVE THE CAPABILITY TO ALLOW THE OPERATOR TO EASILY EXCLUDE 'NON CRITICAL' ZONES THAT SHOULD NOT BE

CONSIDERED WHEN DETERMINING THE STATIC PRESSURE SET POINT.

7. SYSTEM VENTILATION OPTIMIZATION:

7.1. THE BAS SHALL CALCULATE AND SEND THE UNIT CONTROLLER THE OUTSIDE AIR VENTILATION FLOW SET POINT. THE SET POINT SHALL BE DETERMINED BY THE ASHRAE 62.1 EQUATION TO CALCULATE THE OUTSIDE AIR REQUIRED TO BE BROUGHT INTO THE UNIT

TO PROPERLY VENTILATE ALL ZONES IN THE SYSTEM.

7.2. THE BAS SHALL NOT REQUEST A HIGHER PERCENTAGE OF OUTSIDE AIR THAN THE UNIT IS ABLE TO CONDITION. THIS VENTILATION RATIO LIMIT OF THE UNIT SHALL AUTOMATICALLY ADJUST TO ENSURE THE SUPPLY AIR SET POINT IS MAINTAINED AND SHALL BE DEPENDENT ON THE UNIT LOAD AND CURRENT OUTSIDE AIR TEMPERATURE & HUMIDITY CONDITIONS. REFER TO AHU SCHEDULE FOR

CAPACITY.

8. PRE-HEATING MODE:

THE HOT WATER VALVE SHALL MODULATE TO MAINTAIN HEATING DRY BULB DISCHARGE AIR SET POINT AS SCHEDULED AND THE CHILLED WATER COIL VALVE SHALL BE FULLY CLOSED. PRE HEATING SHALL BE ENABLED WHEN THE MIXED AIR TEMPERATURE BELOW 55°F (ADJ.)

9. COOLING MODE:

THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN THE COOLING DRY BULB DISCHARGE AIR SET POINT, AS SCHEDULED AND THE

PREHEATING VALVE SHALL BE FULLY CLOSED.

10. UNOCCUPIED OPERATION:

10.1. WHEN THE BMS INITIATES UNOCCUPIED OPERATION, THE UNIT SHALL TURN OFF AND CLOSE IT'S OUTSIDE AND EXHAUST AIR

DAMPERS.

10.2. THE AHU SHALL CYCLE ON, AS DIRECTED BY THE BMS, TO MAINTAIN UNOCCUPIED SPACE'S HEATING AND COOLING SET POINTS. THE SUPPLY & RETURN FAN VFD SHALL OPERATE AND MODULATE TO MAINTAIN DUCT STATIC PRESSURE SET POINT. THE HOT WATER VALVE OR CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN DISCHARGE AIR TEMPERATURE SET POINT (ADJ.). THE OA & EA

DAMPERS SHALL REMAIN CLOSED, THE RA DAMPER SHALL REMAIN OPEN.

11. RETURN FAN CONTROL:

THE RETURN FAN SHALL MODULATE TO MAINTAIN A POSITIVE BUILDING PRESSURE OF 0.05 (ADJ.)WC.

12. AIR MONITORING STATION :

THE DDC CONTROL SYSTEM SHALL MONITOR THE CFM OF OUTDOOR AIR, AS SENSED BY AIR FLOW MONITORING STATION. IF OUTDOOR AIR

CFM DROP MORE THAN 10% BELOW THE REQUIRED MINIMUM CFM, ALARM SHALL BE GENERATED.

13. FREEZE PROTECTION:

A HARDWIRED, FREEZSTAT SHALL BE ELECTRICALLY INTERLOCKED WITH THE UNIT OPERATION. UPON SENSING A POTENTIAL FOR FREEZING CONDITIONS OF 35°F (ADJ), AS SENSED BY MIXED AIR TEMPERATURE SENSOR (TS-2), ALL FANS SHALL DISABLE., ALL DAMPERS SHALL CLOSE, ALL VALVES SHALL OPEN TO 100% AND AN AUDIBLE ALARM SHALL BE ISSUED AT THE BMS AND AN AUDIBLE ALARM WITH TEXT MESSAGE INDICATING FREEZE CONDITIONS SHALL BE ISSUED AT THE CONTROLS WORKSTATION. A MANUAL RESET OF THE LOW LIMIT SWITCH SHALL BE

REQUIRED TO RESTART THE UNIT.

14. SMOKE DETECTION (SD-1):

THE UNIT SHALL SHUT DOWN AND AN ALARM SHALL GENERATE AT THE BMS AND FIRE ALARM CONTROL PANEL.

15. ALARMS SHALL BE PROVIDED AS FOLLOWS:

15.1. SUPPLY/RETRUN FAN FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.

15.2. SUPPLY/RETURN FAN IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.

15.3. FILTER REQUIRED: FILTER DIFFERENTIAL PRESSURE EXCEEDS A USER DEFINABLE LIMIT (ADJ.).

15.4. HIGH AIR CARBON DIOXIDE CONCENTRATION: WHEN IN OCCUPIED MODE, IF THE RETURN AIR CO2 CONCENTRATION IS GREATER BY

700PPM COMPARED TO OUTSIDE AIR CO2 CONCENTRATION.

15.5. LOW RETURN AIR HUMIDITY: IF THE RETURN AIR HUMIDITY IS LESS THAN 35% (ADJ.).

15.6. LOW MIXED AIR TEMPERATURE OF 35°F (ADJ.) AND BELOW.

15.7. SMOKE DETECTION.

REHEAT VAV TERMINAL UNITS SEQUENCE OF OPERATION:

EACH VAV TERMINAL UNIT SHALL BE INDIVIDUALLY CONTROLLED BY AN APPLICATION SPECIFIC VAV CONTROLLER, WHICH SHALL BE INTERFACED WITH THE BAS FOR CENTRALIZED MONITORING AND CONTROL. EACH DDC VAV UNIT CONTROLLER SHALL INTERFACE AND BE INTEROPERABLE WITH AHU/RTU CONTROLLER TO FACILITATE DEMAND CONTROL OF COOLING OR HEATING AS INDICATED IN VAV AHU/RTU AND HEATING WATER SYSTEM

SEQUENCES OF OPERATION.

CONTROLS SHALL BE FURNISHED BY THIS CONTRACTOR. VAV TERMINAL UNIT MANUFACTURER SHALL FURNISH TRANSFORMER AND SHALL MOUNT DDC CONTROLLER AND DAMPER OPERATOR AS FURNISHED TO THE

MANUFACTURER BY THIS ATC CONTRACTOR.

OCCUPIED CYCLE:

AS THE SPACE TEMPERATURE RISES ABOVE THE COOLING SET POINT, AS SENSED BY SPACE MOUNTED TEMPERATURE SENSORS, TS, THE REHEATING CONTROL VALVE SHALL CLOSE AND THE TERMINAL UNIT AIR FLOW CONTROLLER SHALL MODULATE TOWARD ITS MAXIMUM CFM. AS THE SPACE TEMPERATURE FALLS BELOW COOLING SET POINT, THE TERMINAL UNIT SHALL MODULATE TO ITS MINIMUM COOLING CFM. UPON A CONTINUED DROP IN SPACE TEMPERATURE, THE TERMINAL UNIT SHALL MODULATE THE VOLUME CONTROLLER TO ITS HEATING MINIMUM CFM AND THE HOT WATER VALVE SHALL BE MODULATED AS REQUIRED TO MAINTAIN THE

ACTIVE HEATING SET POINT. DURING COOLING CYCLE SHALL BE CLOSED.

UNOCCUPIED CYCLE:

DURING THE UNOCCUPIED CYCLE, THE TERMINAL UNIT AIR VALVE SHALL MODULATE TO ITS MINIMUM CLOSED POSITION AND THE HOT WATER VALVE SHALL CLOSE. WHEN SPACE TEMPERATURE FALLS BELOW REDUCED NIGHT-SETBACK TEMPERATURE (55°F), AHU/RTU SHALL ENERGIZE ACCORDING TO AHU/RTU SEQUENCE, AND TERMINAL UNIT HOT WATER VALVE SHALL MODULATE TO MAINTAIN REDUCED NIGHT-SETBACK TEMPERATURE

(ADJ).

MORNING WARM-UP:

DURING MORNING WARM-UP CYCLE, TERMINAL UNIT AIR VALVE SHALL DRIVE OPEN TO MAXIMUM POSITION AND HOT WATER VALVE SHALL BE PERMITTED TO OPEN FULLY. THE HEATING HOT WATER SUPPLY TEMPERATURE SHALL BE SET AT MAXIMUM FOR QUICK WARM-UP. WHEN OCCUPIED SPACE TEMPERATURE SETPOINT IS REACHED, TERMINAL UNIT CONTROL SHALL SWITCH TO AUTOMATIC FOR OCCUPIED CYCLE CONTROL, INCLUDING THE HOT WATER SUPPLY TEMPERATURE CONTROL.

VENTILATION CONTROL:

THE CONTROLS SHALL BE ARRANGED TO PERMIT THE ECONOMIZED DAMPERS TO BE CONTROLLED TO MAINTAIN AN OCCUPANCY SETPOINT OF 72 DEGREES F (ADJ) WITH OUTSIDE AIR VENTILATION ONLY, UTILIZING THE ECONOMIZER DAMPERS WITH BOTH THE HEATING AND COOLING COIL VALVES CLOSED. THAT PROVIDES A COOLING SETPOINT OF 75 DEG F, A HEATING SETPOINT OF 68 DEG F AND A VENTILATION SETPOINT OF 72 DEG F, FOR MAXIMUM COMFORT AND OPTIMIZED ENERGY CONSUMPTION.

UNIT HEATER (UH) SEQUENCE OF OPERATION:

HEATING MODE:

WHEN THE TEMPERATURE FALLS BELOW THE THERMOSTAT SET POINT OF 60°F (ADJ). THE

THERMOSTAT SHALL OPEN WATER SUPPLY VALVE AND START THE FAN. ONCE SPACE

THERMOSTAT IS SATISFIED VALVE SHALL CLOSE AND UNIT HEATER SHALL STOP.

SEQUENCE OF OPERATION:

THE SPACE TEMPERATURE SHALL START/STOP EXHAUST FAN. DAMPER SHALL OPEN WHEN FAN

IS ENERGIZED AND CLOSED WHEN FAN IS DE-ENERGIZED. DAMPER SHALL PROVE OPEN BEFORE

EXHAUST FAN SHALL ENERGIZE.

REHEAT VAV TERMINAL UNITS SEQUENCE OF OPERATION:

1. GENERAL:

1.1. THE AIR TERMINAL UNIT SHALL HAVE ITS OWN FACTORY-INSTALLED CONTROL SYSTEM WITH

INDEPENDENT DDC AND ASSOCIATED CONTROLLER CONTAINED IN A FACTORY INSTALLED

UNIT-MOUNTED CONTROL PANEL. ALL PROGRAMS AND LOGIC REQUIRED FOR THE FUNCTIONS

AND SEQUENCES OF OPERATION DESCRIBED IN THE CONTRACT DOCUMENTS SHALL RESIDE IN

THE UNIT-MOUNTED CONTROLLER. THE CONTROLLERS AND ASSOCIATED PROGRAMS SHALL BE

CAPABLE OF OPERATING COMPLETELY INDEPENDENTLY AND SHALL BE CONNECTED TO AND

INTEROPERABLE WITH THE BUILDING AUTOMATION SYSTEM (BAS) USING DDC.

1.2. ALL SENSORS, CONTROLLER SETTINGS, AND CONTROL MODULE SETTINGS SHALL BE TESTED

AND CALIBRATED IN ACCORDANCE WITH THE SEQUENCE OF OPERATION AS INDICATED.

1.3. ALL SET POINTS SHALL BE FIELD ADJUSTED DURING THE COMMISSIONING PROCESS TO MEET

THE REQUIREMENTS OF ACTUAL FIELD CONDITIONS.

1.4. ALL SET POINTS SHALL BE ADJUSTABLE (ADJ).

1.5. THE BAS SHALL MONITOR AND TREND ALL ANALOG VALUES EVERY 15 MINUTES. ALL STATUSES SHALL BE TRENDED ON AN CHANGE OF VALUE. THE SYSTEM SHALL ARCHIVE THIS INFORMATION

FOR A MINIMUM OF 60 DAYS.

1.6. ALL POINTS SHALL BE PROVIDED WITH DYNAMIC COLOR DISPLAY.

2. OCCUPIED MODE:

2.1. THE UNIT SHALL MAINTAIN 75° F (ADJ)COOLING SET POINT AND 70° F (ADJ) HEATING SET POINT.

THE DAMPER SHALL MODULATE TO…