36C25618U0323-0002010.pdf

F E

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

FLOOR PLANS - MECHANICAL

46 WLP NMT

M46-101 10-30-13

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

MIXED AIR TEMPERATURE SENSOR (T-1)

CHILLED WATER CONTROL VALVE (V-1)AI2

AI1

REHEAT HOT WATER CONTROL VALVE (V-2)AI3

SUPPLY FAN VFD STATUSAI4

DI4

DI2

DI3

DI1

FILTER STATUS (DPS-1)

LOW LIMIT TEMPERATURE SENSOR (T-2) STATUS

SUPPLY FAN STATUS

MIXED AIR SMOKE DETECTOR (SD-1) STATUS

SUPPLY

VFD

FAN

DO1

DI4

COIL

C H

W R

V-1

CLG

AI2

AO1

PANEL

DDC CONTROL

AI1

T-1OUTSIDE AIR

RETURN AIR

H W

R

COIL

HTG

V-2

AI3

AO2

DI3

T-2

DI1

SD-1

2 3

TT

AIR

FILTER

DPS-1

DI2

KEYNOTES:

EXISTING DDC DEVICE TO BE REUSED IF FUNCTIONAL AND COMPATIBLE.

EXISTING PNEUMATIC DEVICE TO BE REPLACED.

INSTALL NEW DDC DEVICE.

PROVIDE NEW DDC CONTROLLER. CONNECT NEW CONTROLLER TO

EXISTING ELECTRICAL SERVICE.

CHILLED WATER CONTROL VALVE (V-1)

HEATING HOT WATER CONTROL VALVE (V-2)

AO1

AO2

AO3

DO1

SUPPLY FAN VFD SPEED

SUPPLY FAN START/STOP

46AC-2 CONTROL SCHEMATIC &

SEQUENCE & BALANCE SCHEDULE

46 WLP NMT

M46-200

SEQUENCE OF OPERATION

1. GENERAL

1.1. AIR UNIT FAN TO BE STARTED AND STOPPED AS SCHEDULED BY THE ECC.

2. TEMPERATURE CONTROL

2.1. COOLING SPACE TEMPERATURE SETPOINT OF EACH ZONE SHALL BE MAINTAINED A 74°F (ADJ). CHILLED WATER VALVE, V-1, SHALL MODULATE TO MAINTAIN AHU LEAVING AIR TEMP OF 55°F (ADJ) AND FAN VFD SHALL MODULATE TO MAINTAIN ONE ZONE REHEAT COIL HOT WATER VALVE CLOSED. ONCE VFD SPEED REACHES MIN SPEED OF 30% (ADJ), CHILLED WATER VALVE, V-1, SHALL MODULATE TO MAINTAIN CRITICAL ZONE SPACE TEMPERATURE SETPOINT WITH RESPECTIVE ZONE HOT WATER VALVE CLOSED.

2.2. HEATING SPACE TEMPERATURE SETPOINT OF EACH ZONE SHALL BE MAINTAINED AT 70°F (ADJ). WHEN ALL ZONES ARE CALLING FOR HEAT REHEAT VALVE, V-2, SHALL MODULATE TO MAINTAIN AHU LEAVING AIR TEMP OF 95°F (ADJ) AND FAN VFD SHALL MODULATE TO MAINTAIN ONE ZONE REHEAT COIL HOT WATER VALVE CLOSED. ONCE VFD SPEED REACHES MIN SPEED OF 30% (ADJ), REHEAT VALVE, V-2 SHALL MODULATE TO MAINTAIN CRITICAL AHU LEAVING AIR TEMP OF 70° UNITL ANY ZONE FALLS BELOW HEATING SPACE TEMPERATURE SETPOINT MINUS 2°F AT WHICH POINT AHU LEAVING AIR TEMP SHALL

RETURN TO 95°F.

3. ALARMS

3.1. THE UNIT AIR FAN SHALL BE DE-ENERGIZED ON A DROP IN COOLING COIL ENTERING AIR TEMPERATURE BELOW THE 35°F SETPOINT OF T-2 OR UPON DETECTION OF IONIZED PARTICLES BY SD-1 OR SD-2.

3.2. A SEPARATE ALARM SHALL BE INITIATED FOR EACH SAFETY. LIKEWISE, A SMOKE DETECTION ALARM

SHALL INITIATED, BY CONTRACT CLOSURE, TO THE FIRE ALARM SYSTEM PANEL.

3.3. THE PRE-FILTER STATUS IS SENSED AT DPS-1. SHOULD THE DROP ACROSS THE FILTER EXCEED 1.5", THE SWITCH SHALL CLOSE AND INITIATE AN ALARM TO THE ECC.

3.4. WHEN THE AIR UNIT FAN IS DE-ENERGIZED FOR ANY REASON, THE AIR UNIT CONTROL VALVES SHALL

RETURN TO THEIR NORMAL POSITIONS.

4. UNOCCUPIED MODE

4.1. DURING UNSCHEDULED PERIODS, THE AIR UNIT FAN SHALL BE DE-ENERGIZED AND ALL CONTROLS AND

CONTROL VALVES SHALL RETURN TO THEIR NORMAL POSITIONS.

SUPPLY TO ZONE

REHEAT COILS

AI5

T-3

T

SUPPLY AIR TEMPERATURE SENSOR (T-3)AI5

DI5 SUPPLY AIR SMOKE DETECTOR (SD-1) STATUS

AO3

AI4

DI5

SD-2

AIR HANDLING UNITS BALANCING SCHEDULE

LABEL AREA SERVED

SUPPLY

CFM

OA CFM

COOLING

COIL GPM

REHEAT

COIL

LBS/HR

46AC-1 OFFICES & VEST. 3845 215 16.8 4.4

46AC-2 CHAPEL-NAVE 6950 100 34.1 8.3

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

MIXED AIR TEMPERATURE SENSOR (T-1)

MIXED AIR HUMIDITY SENSOR (H-1)AI2

AI1

CHILLED WATER CONTROL VALVE (V-1)AI3

HEATING HOT WATER CONTROL VALVE (V-2)AI4

AI5 SUPPLY FAN VFD STATUS

DI4

DI2

DI3

DI1

DI5

LOW LIMIT TEMPERATURE SENSOR (T-2) STATUS

FILTER STATUS (DPS-1)

SUPPLY FAN STATUS

SUPPLY DISCHARGE AIR SMOKE DETECTOR (SD-2) STATUS

MIXED AIR SMOKE DETECTOR (SD-1) STATUS

SUPPLY

VFD

FAN

AO3

AI5

COIL

C H

W R

V-1

CLG

AI3

AO1

SUPPLY

PANEL

DDC CONTROL

AI1

T-1OUTSIDE AIR

RETURN AIR

H W

R

COIL

REHEAT

V-2

AI4

AO2

DI2

T-2

DI5

SD-2

DI1

SD-1

TT

AIR

FILTER

DPS-1

DI3

KEYNOTES:

EXISTING DDC DEVICE TO BE REUSED IF FUNCTIONAL AND COMPATIBLE.

EXISTING PNEUMATIC DEVICE TO BE REPLACED.

PROVIDE NEW DDC DEVICE.

PROVIDE NEW DDC CONTROLLER.

AI2

H-1

H

DO1

DI4

CHILLED WATER CONTROL VALVE (V-1)

HEATING HOT WATER CONTROL VALVE (V-2)

AO1

AO2

AO3

DO1

SUPPLY FAN VFD SPEED

SUPPLY FAN START/STOP

46AC-1 CONTROL SCHEMATIC &

SEQUENCE

46 WLP NMT

M46-201

SEQUENCE OF OPERATION

1. GENERAL

1.1. AIR UNIT FAN TO BE STARTED AND STOPPED AS SCHEDULED BY THE ECC.

2. TEMPERATURE CONTROL

2.1. COOLING SPACE TEMPERATURE SETPOINT SHALL BE 74°F (ADJ). WHEN OA DEWPOINT IS ABOVE 55°F CHILLED WATER COIL LEAVING AIR TEMPERATURE OF 55°F AS SENSED BY T-3 BY MODULATING CHILLED WATER VALVE, V-1. FAN SPEED SHALL MODULATE BETWEEN FULL SPEED AND MIN. SPEED OF 30% TO MAINTAIN SPACE TEMPERATURE. WITH THE FAN AT MIN. SPEED, UPON A CALL FOR HEATING THE REHEAT VALVE SHALL MODULATE TO MAINTAIN SPACE TEMPERATURE SETPOINT WITH AND UPPER LIMIT SUPPLY AIR TEMPERATURE OF 95°F. WHEN OA SEW POINT TEMPERATURE IS LESS THAN OR EQUAL TO 55°F, THE UNIT AT MINIMUM FAN SPEED WILL ATTEMPT TO MAINTAIN SPACE TEMPERATURE BY MODULATING EITHER THE CHILLED WATER OR STEAM REHEAT VALVE TO MEET SPACE COOLING OR HEATING SETPOINT RESPECTIVELY. IF ONE OF THE VALVES IS 100% OPEN AND ADDITIONAL HEAT OR

COOLING IS REQUIRED THE FAN SPEED SAHLL INCREASE TO SATISFY SPACE DEMAND.

2.2. HEATING SPACE TEMPERATURE SETPOINT OF 70°F (ADJ) SHALL BE MAINTAINED WITH A REHEAT COIL LEAVING TEMP, T-4, OF 95°F BY MODULATING FAN SPEED, ONCE FAN VFD HAS REACHED MIN. SPEED OF 30% (ADJ) HEATING COIL VALVE, V-2, SHALL BE MODULATED TO MAINTAIN A SPACE AIR TEMPERATURE

SETPOINT. THE OUTSIDE AIR TEMPERATURE IS TRANSMITTED BY T-1.

2.3. WHEN SPACE TEMPERATURE IS BETWEEN COOLING TEMPERATURE SETPOINT AND HEATING SETPOINT FAN VFD SHALL AT MIN SETPOINT AND CHILLED WATER VALVE, V-1, AND REHEAT VAVLE, V-2, SHALL MODULATE TO MAINTAIN NEUTRAL REHEAT COIL LEAVING AIR TEMP. SIMULTANEOUS HEATING AND

COOLING SHALL NOT BE PERMITTED.

3. HUMIDITY

3.1. MIXED AIR %RH IS TRANSMITTED TO THE ECC BY H-1.

3.2. WHEN SPACE HUMIDITY RISES ABOVE 60% RH AS SENSED BY SPACE HUMIDISTAT, H-2, VFD SPEED SHALL BE 100%, CHILLED WATER VALVE, V-1, SHALL MODULATE TO MAINTAIN CHILLED WATER COIL LAT, T-3, SHALL BE 55°F, AND REHEAT VAVLVE, V-2, SHALL MODULATE TO MAINTAIN SPACE TEMPERATURE

SETPOINT. WHEN SPACE HUMIDITY REACHES 50% RH NORMAL OPERATION SHALL RESUME.

4. ALARMS

4.1. THE UNIT AIR FAN SHALL BE DE-ENERGIZED ON A DROP IN COOLING COIL ENTERING AIR TEMPERATURE BELOW THE 35°F SETPOINT OF T-2 OR UPON DETECTION OF IONIZED PARTICLES BY SD-1 OR SD-2.

4.2. A SEPARATE ALARM SHALL BE INITIATED FOR EACH SAFETY. LIKEWISE, A SMOKE DETECTION ALARM

SHALL INITIATED, BY CONTRACT CLOSURE, TO THE FIRE ALARM SYSTEM PANEL.

4.3. THE PRE-FILTER STATUS IS SENSED AT DPS-1. SHOULD THE DROP ACROSS THE FILTER EXCEED 1.5", THE SWITCH SHALL CLOSE AND INITIATE AN ALARM TO THE ECC.

4.4. WHEN THE AIR UNIT FAN IS DE-ENERGIZED FOR ANY REASON, THE AIR UNIT CONTROL VALVES SHALL

RETURN TO THEIR NORMAL POSITIONS.

5. UNOCCUPIED MODE

5.1. DURING UNSCHEDULED PERIODS, THE AIR UNIT FAN SHALL BE DE-ENERGIZED AND ALL CONTROLS AND

CONTROL VALVES SHALL RETURN TO THEIR NORMAL POSITIONS.

AI6

T-3

T

AI9 SPACE HUMIDIAT (H-2)

AI7

T-4

T

T-5T

AI8

SPACE

THERMOSTAT

T-2H

AI9

SPACE

HUMIDISTAT

AI7 REHEAT COIL LEAVING AIR TEMPERATURE SENSOR (T-4)

AI8 SPACE THERMOSTAT (T-5)

AI6 COOLING COIL LEAVING AIR TEMPERATURE SENSOR (T-3)

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

HWS

HWR

TEMPERATURE

SENSOR (TYP)

AI3

T

AI4

DI1

FTFS

STEAM CONV.

TO COND. PUMP

STEAM

SUPPLY

AI1

AO1 1

T

AI5

STR

DO1

DI2

DI2

STR

DO2

KEYNOTES:

EXISTING DDC DEVICE TO BE REUSED IF FUNCTIONAL AND COMPATIBLE.

DETERMINE IF DEVICE EXISTS. IF NONEXISTENT, INSTALL NEW DDC DEVICE.

STEAM CONVERTER CONTROL VALVE

NOT USEDAI2

AI1

HOT WATER SUPPLY FLOWMETERAI4

HOT WATER RETURN TEMPERATURE SENSORAI5

DI2

DI3

DI1

HOT WATER PUMP (46-P-2) STATUS

HOT WATER PUMP (46-P-1) STATUS

HOT WATER PUMP (46-P-1) START/STOP

HOT WATER PUMP (46-P-2) START/STOP

DO1

DO2

AO1 STEAM CONVERTER CONTROL VALVE

STEAM CONVERTER FLOW SWITCH

SEQUENCE OF OPERATION

1. OCCUPIED MODE

1.1. ONCE FLOW IS PROVEN BY STEAM CONVERTER FLOW SWITCH, STEAM CONTROL

VALVE SHALL MODULATE TO MAINTAIN THE HOT WATER SUPPLY TEMPERATURE AT

SETPOINT.

1.2. THE HOT WATER SUPPLY TEMPERATURE RESETS INVERSELY WITH THE OUTDOOR

TEMPERATURE AS SCHEDULED: AT 30°F OA - HWS AT 180°F, AT 70°F OA - HWS AT

140°F.

1.3. HOT WATER PUMPS ARE CONTROLLED BY THE DDC SYSTEM. THE PUMPS ARE 100%

REDUNDANT REQUIRING ONLY ONE PUMP AT A TIME TO OPERATE. THE LEAD/LAG

WATER PUMPS ARE SEQUENCED BY THE DDC SYSTEM TO CHANGE EVERY 7 DAYS. IN

THE EVENT A PUMP FAILS TO START IN 30 SECONDS OR NO FLOW CONDITION AT THE

HEAT EXCHANGER, AN ALARM IS GENERATED, AND THE SECOND PUMP/EXCHANGER

STARTS AUTOMATICALLY.

2. UNOCCUPIED MODE

2.1. IF THE OUTSIDE AIR TEMPERATURE IS BELOW 40°F (ADJUSTABLE) THE DDC SYSTEM

WILL PLACE THE HWS IN OCCUPIED MODE TO START PUMPS AND ACTUATE STEAM

VALVES TO MAINTAIN SETPOINT AS NEEDED BY THE RESET SCHEDULE.

STR

46-P-3

46-P-4

CAMPUS

CHWS

CAMPUS

CHWR

T T

STR

DO1

DI1

AI1

AI2

AI3

DO2

DI2

T

BLDG 46

CHWR

BLDG 46

CHWS

21 1

SEQUENCE OF OPERATION

1. GENERAL

1.1. THE EXISTING CHILLED WATER SUPPLY FROM THE CENTRAL COOLING PLANT

PROVIDES CHILLED WATER TO THE SECONDARY PUMPING SYSTEM AT BUILDING 46.

THE SECONDARY PUMPS ARE 100% REDUNDANT REQUIRING ONLY ONE PUMP AT A

TIME TO OPERATE.

1.2. THE LEAD CHILLED WATER PUMP SHALL RUN ON CALL FOR COOLING.

2. LEAD/STANDBY PUMP CONTROL

2.1. IF THE LEAD BUILDING SECONDARY CHILLED WATER PUMP FAILS TO OPERATE, THE

STANDBY PUMP SHALL BE AUTOMATICALLY STARTED, AND THE SYSTEM SHALL

RESUME NORMAL OPERATION. AN ALARM WILL BE GENERATED AT THE DDC PANEL

TO NOTIFY OF PUMP FAILURE.

2.2. THE LEAD/STANDBY STATUS OF THE PUMPS SHALL BE ROTATED EVERY 7 DAYS

FOR EVEN RUNTIME.

KEYNOTES:

EXISTING DDC DEVICE TO BE REUSED IF FUNCTIONAL AND COMPATIBLE.

DETERMINE IF DEVICE EXISTS. IF NONEXISTENT, INSTALL NEW DDC DEVICE.

AI2

AI1

AI3

CAMPUS CHILLED WATER SUPPLY TEMPERATURE SENSOR

BUILDING 46 CHILLED WATER SUPPLY TEMPERATURE SENSOR

DI1

CHILLED WATER PUMP (46-P-4) STATUS

CHILLED WATER PUMP (46-P-3) STATUS

DI2

DO1

DO2

CHILLED WATER PUMP (46-P-3) START/STOP

CHILLED WATER PUMP (46-P-4) START/STOP

CAMPUS CHILLED WATER RETURN TEMPERATURE

PANEL

DDC CONTROL

H W

R

V-1

NC

COIL

REHEAT

NO

NOTES:

1. POINTS SHALL BE LOCATED IN 46-AC-1 CONTROL PANEL.

2. TEST AND BALANCE ALL AIR FLOWS TO REHEAT COILS PRIOR TO

STARTING WORK. CONFIRM AREA SERVED BY REHEAT COILS.

PROVIDE REPORT TO VA. BALANCE ALL AIR FLOWS TO VALUES

SHOWN IN DRAWINGS.

AO1

AI1

TO SUPPLY

SEQUENCE OF OPERATION

1. GENERAL

1.1. WHEN AIR UNIT 46-AC-1 IS ENERGIZED, THE REHEAT CONTROLS WILL BE ENABLED. THE REHEAT VALVE, V-1, WILL BE MODULATED TO MAINTAIN MIN SPACE TEMP OF 70°F (ADJ).

1.2. WHEN 46-AC-2 IS DE-ENERGIZED, THE REHEAT CONTROLS WILL BE DISABLED.

T-1T

AI2

SPACE

THERMOSTAT HOT WATER CONTROL VALVE (V-1)

SPACE TEMPERATURE SENSOR (T-1)AI2

AI1

HOT WATER CONTROL VALVE (V-1)AO1

FROM

46-AC-2

KEYNOTES:

PROVIDE NEW VALVE ACTUATOR.

PROVIDE NEW SPACE THERMOSTAT.

NOTES:

1. PROVIDE NEW DDC CONTROLLER. CONNECT TO

EXISTING ELECTRICAL SERVICE.

NOTES:

1. PROVIDE NEW DDC CONTROLLER. CONNECT TO

EXISTING ELECTRICAL SERVICE.

HHWS, SCHWS, & REHEAT COIL

CONTROL SCHEMATIC & SEQUENCE

& BALANCE SCHEDULE

46 WLP NMT

M46-202

180 160 140

HOT WATER SETPOINT

(DEG F)

OUTDOOR

AIR

TEMPERATURE

(DEG F)

HEATING HOT WATER RESET

SCHEDULE

HOT WATER SUPPLY TEMPERATURE SENSORAI3

CORR.

DETOX

OBSERVATION

MHC

PSYCHIATRIST

MED ROOM

CORR.

CORR.

CORR.

COMM

PATIENT

TOILET

ADDICTION

THERAPIST

ADDICTION

THERAPIST

CORR.

CORR.

H. K.

SUPPLY

CORR.

BIO

up

CDOP

STORAGE

SUPPLY

COPY/MAIL

COLONNADE

ENTRY

VESTIBULE

VENDING

COMMON WAITING

ROOM

CDOP

CLERK/COPY

MHC

CLERKS

DETOX

PHYSICIAN

ASST/EXAM

DETOX

NURSE

DETOX

SOCIAL

WORKER

ADDICTION

THERAPIST

CDOP

GROUP

ROOM

ADDICTION

THERAPIST

PATIENT

TOILET

CDOP

GROUP

ROOM

CDOP

RECREATION

CDOP

COORDINATOR

ADDICTION

THERAPIST

CDOP

SOCIAL

WORKER

WOMENMEN

MECHANICAL

STAFF

BREAK

ROOMMHICM

RN

136126

MHICM

COORDINATOR

SECRETARY

MHC

ADMIN.

MEN

WOMEN

PC

LPN

MHC

PHYSICIAN

ASSISTANT

MHC

NURSE

MHC

NURSE

PC

RN

STAIR

STAIR

CORR.

PC

PHYSICIAN

EXAM

MECHANICAL

129B

MECH.

LAB DRAW

LAB

TOILET

CONFERENCE

MHICM

PHYSICIAN

ASSISTANT

MHC

SOCIAL

WORKER

MHC

PhD

H. KEEPING

MHC

PSYCHIATRIST

140 141

REAR

ENTRY

CORR.

MHC

PHYSICIAN

ASSISTANT

104A

PATIENT

TOILET

BIO

SAMPLES

SPRINKLER

ROOM

FE

C

FEC

FE

C

FEC

ELEC.

ROOM

EXISTING

COLONNADE

129A

ELEC.

up

CLOSET

104B

EXIST 49-VAV-2-3

EXIST 49-VAV-2-4

EXIST 49-VAV-2-11

EXIST 49-VAV-2-12

EXIST 49-VAV-2-13

EXIST

49-VAV-1-1

EXIST

49-VAV-1-2

EXIST

49-VAV-1-5

EXIST

49-VAV-1-10

EXIST

49-VAV-1-4

EXIST

49-VAV-1-2

EXIST

49-VAV-1-6

EXIST

49-VAV-1-7

EXIST

49-VAV-1-8

EXIST

49-VAV-1-11

EXIST

49-VAV-1-12

EXIST

49-VAV-1-9

EXIST 49-HWUH-1

EXIST

49-HWH-1

EXIST

49-C-1

EXIST

49-C-2

EXIST 49-HWP-1

STARTER

EXIST 49-HWP-2

STARTEREXIST 49-HWP-2

EXIST 49-HWP-1

EXIST 49-SF-1

EXIST

BMS

CONTROL

PANEL

EXIST VFD FOR

49-AHU-1

EXIST 49-VAV-1-13

EXIST 49-VAV-1-14

EXIST STATIC PRES. SEN.

EXIST

49-VAV-2-1

EXIST CHILLED

WATER METER

(49-WFMD-1)

EXIST 49-CWP-1

EXIST VFD FOR

49-CWP-1

EXIST 49-CWP-2

EXIST VFD FOR

49-CWP-2

EXIST 49-VAV-2-9

EXIST STATIC PRES. SEN.

EXIST 49-VAV-2-10

EXIST

49-VAV-2-5

EXIST

49-VAV-2-8

EXIST

49-VAV-2-2

EXIST VFD FOR

49-SF-2

EXIST BMS

CONTROL PANEL

KEYNOTES

EXISTING 49-VAV-2-6

EXISTING 49-SF-2

EXISTING VFD FOR 49-AHU-2

EXISTING 49-CP-1

EXISTING STEAM FLOW METER

EXISTING 49-VAV-2-7

EXISTING VFD FOR 49-SF-1

EXIST 0.090 HP EXHAUST FAN (49-EF-6) TO REMAIN

ON STANDALONE CONTROLS

EXIST 0.167 HP EXHAUST FAN (49-EF-9) TO REMAIN

ON STANDALONE CONTROLS

EXIST 0.167 HP EXHAUST FAN (49-EF-10) TO

REMAIN ON STANDALONE CONTROLS

EXIST 1/20 HP EXHAUST FAN

(49-EF-3) ON ROOF TO

REMAIN ON STANDALONE

CONTROLS

EXIST 0.167 HP EXHAUST FAN

(49-EF-1) TO REMAIN ON

STANDALONE CONTROLS

EXIST 0.167 HP EXHAUST FAN

(49-EF-5) TO REMAIN ON

STANDALONE CONTROLS

EXIST 0.064 HP EXHAUST FAN

(49-EF-12) TO REMAIN ON

STANDALONE CONTROLS

EXIST 1/20 HP

EXHAUST FAN

(49-EF-4) TO REMAIN

ON STANDALONE

CONTROLS

EXIST 49-AHU-1

EXIST

49-AHU-2

EXIST 0.167 HP EXHAUST FAN

(49-EF-2) TO REMAIN ON

STANDALONE CONTROLS

EXIST 0.064 HP EXHAUST

FAN (49-EF-11) TO

REMAIN ON STANDALONE

CONTROLS

EXIST 0.160 HP EXHAUST FAN

(49-EF-7) TO REMAIN ON

STANDALONE CONTROLS

EXIST 0.160 HP EXHAUST FAN

(49-EF-8) TO REMAIN ON

STANDALONE CONTROLS

EXIST ELEC.

PANELS.

EXIST MAIN

ELEC PANEL.

NEW ELEC METER.

CONNECT TO

CAMPUS EMS.

NOTES:

1. EXIST SPACE THERMOSTATS AND

SENSORS TO BE REUSED FOR

BUILDING 49.

F E

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

1ST FLOOR PLAN - MECHANICAL

49 WLP NMT

M49-101

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING DDC. SENSORS, ACTUATORS,

SPACE THERMOSTATS/SENSORS ETC MAY BE REUSED IF

FUNCTIONAL AND COMPATIBLE.

2. PROVIDE NEW DDC CONTROLLER. CONNECT TO EXISTING

ELECTRICAL SERVICE.

OUTSIDE AIR

DPS-1

T-4T

C W

R

PANEL

DDC CONTROL

T-3

V-1

NC

RETURN AIR

DI8

DI3

AI4

AI2

SD-1

AI3

T-2VFD

OUTSIDE AIR

FAN

T-1

SPS-1

DI1

SUPPLY

FAN

SPS-2

AI7

T-5

T SPS-3

AI8

DPS-2

DI7

AIR FILTER

DI5 DI6

DO1

AO1

DI2

AI1

DO2

AO3

DI4

AI6

SEQUENCE OF OPERATION

1. GENERAL

1.1. THE VARIABLE VOLUME UNIT CONSISTS OF AN OUTSIDE AIR FAN, PRE-FILTER, CHILLED WATER COOLING COIL, AN AHU SUPPLY FAN WITH VFD, AND A FINAL FILTER RACK. THE UNIT IS DDC

CONTROLLED USING ELECTRONIC ACTUATION.

1.2. THE UNIT IS SCHEDULED FOR AUTOMATIC OPERATION ON A TIME OF DAY BASIS FOR OCCUPIED AND UNOCCUPIED MODES. THE LATEST START TIME IS THE SCHEDULED OCCUPANCY FOR THE SPACE.

1.3. THE UNIT OPERATES IN OCCUPIED AND SAFETY MODES AS FOLLOWS (ALL SUGGESTED SETPOINTS

AND SETTINGS ARE ADJUSTABLE).

2. OCCUPIED

2.1. THE AHU SUPPLY FAN MODULATES TO MAINTAIN THE SUPPLY DUCT STATIC PRESSURE SETPOINT.

THE OUTSIDE AIR FAN MODULATES TO ITS SCHEDULED CFM VALUE. WHEN THE OA DEWPOINT IS ABOVE 55°F THE CHILLED WATER VALVE, V-1, MODULATES TO MAINTAIN 55°F (ADJUSTABLE) SUPPLY

AIR TEMPERATURE.

2.2. STATIC PRESSURE IS MEASURED AT LEAST 2

3 OF THE DISTANCE DOWNSTREAM OF THE SUPPLY FAN

IN EITHER THE LONGEST OR CRITICAL DUCT RUN. UPON INITIAL STARTUP OF THE AIR HANDLING

SYSTEM, THE SUPPLY FAN SPEED SLOWLY RAMPS UP TO THE DESIRED STATIC PRESSURE.

2.4. STATIC PRESSURE SHALL BE RESET BASED ON TERMINAL BOX DAMPER POSITIONS TO MINIMIZE FAN

SPEED.

2.5. SUPPLY AIR TEMPERATURE SETPOINT SHALL BE RESET BASED ON SPACE DEMAND, FAN SPEED, AND

OUTSIDE AIR DEW POINT TEMPERATURE MIN MINIMIZE TOTAL ENERGY USAGE.

3. SAFETIES

3.1. DISCHARGE HIGH STATIC CUTOUTS AND SMOKE DETECTORS IN THE SUPPLY AIR STREAM AND

SUPPLY FAN VFD FAULT ALARMS DE-ENERGIZE THE OUTSIDE AIR AND SUPPLY FANS UPON

ACTIVATION. ALL DAMPERS AND VALVES POSITION TO THEIR NORMAL POSITIONS AFTER THE FANS

ARE DE-ENERGIZED.

3.2. WHEN THE LOW TEMPERATURE DETECTOR, T-3, IN THE MIXED AIR STREAM SENSES TEMPERATURES BELOW 38°F, THE OUTSIDE AIR AND SUPPLY FANS SHALL BE DE-ENERGIZED. AFTER THE FANS ARE

DE-ENERGIZED, THE COOLING COIL VALVE SHALL BE OPENED AND ALL OTHER DAMPERS AND

VALVES SHALL BE POSITIONED TO THEIR NORMAL POSITIONS. AN ALARM SHALL BE GENERATED AT

THE WORKSTATION.

3.3. A CURRENT SWITCH IS INSTALLED ON THE LOAD SIDE OF THE SUPPLY FAN VFD. THE DDC SYSTEM

USES THIS SWITCH TO DETERMINE IF THE FAN IS IN THE DESIRED STATE (ON OR OFF) AND

GENERATES AN ALARM IF STATUS DEVIATES FROM FROM DDC START/STOP CONTROL.

3.4. THE DDC SYSTEM GENERATES A VFD TROUBLE ALARM INDEPENDENT FROM FAN STATUS.

F E

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

AMBIENT AIR SENSOR

INSTALLED ON NORTH

SIDE OF BUILDING

CLG

COIL SUPPLY AIR

VFDTT

T

OUTSIDE AIR FAN VFD STATUS

RETURN AIR TEMPERATURE SENSOR (T-1)AI2

AI1

MIXED AIR TEMPERATURE SENSOR (T-2)AI3

AMBIENT AIR TEMPERATURE SENSOR (T-4)AI4

AI6

AI7

AI5 CHILLED WATER CONTROL VALVE (V-1)

SUPPLY FAN VFD STATUS

SUPPLY FAN DISCHARGE TEMPERATURE SENSOR (T-5)

DI6

DI7

DI4

DI2

DI3

DI1

DI5

OUTSIDE AIR FAN STATUS

LOW LIMIT TEMPERATURE SENSOR (T-3) STATUS

SUPPLY FAN STATUS

SUPPLY FAN DISCHARGE HIGH LIMIT STATIC PRESSURE SENSOR (SPS-1) STATUS

OUTSIDE AIR HIGH LIMIT STATIC PRESSURE SENSOR (SPS-1) STATUS

FILTER STATUS (DPS-2)

SUPPLY FAN DISCHARGE SMOKE DETECTOR (SD-1)

OUTSIDE AIR FAN VFD SPEED

CHILLED WATER CONTROL VALVE (V-1)

AO1

AO2

AO3

DO1

DO2

SUPPLY FAN VFD SPEED

OUTSIDE AIR FAN START/STOP

SUPPLY FAN START/STOP

AI5

AO2

AI8 SUPPLY AIR STATIC PRESSURE SENSOR (SPS-3)

49-VAV-1-1

49-VAV-1-2

49-VAV-1-3

49-VAV-1-4

49-VAV-1-5

49-VAV-1-6

49-VAV-1-7

49-VAV-1-8

49-VAV-1-9

49-VAV-1-10

49-VAV-1-11

49-VAV-1-12

49-VAV-1-13

49-VAV-2-1

49-VAV-2-2

49-VAV-2-3

49-VAV-2-4

49-VAV-2-5

49-VAV-2-6

49-VAV-2-7

49-VAV-2-8

49-VAV-2-9

49-VAV-2-10

49-VAV-2-11

49-VAV-2-12

49-VAV-2-13

GPM

HEATING

MAXMIN

CFM COOLING

VARIABLE AIR VOLUME BOX SCHEDULE

55 215 0.8

AREA SERVED

124 MHICM PHYS. ASSISTANT

49-VAV-1-14

130 510 1.8120 MHC PHD / 121 MHC PHYS. ASSISTANT / 123 MHC SOCIAL WORKER

60 230 0.8118 LAB DRAW / 122 CORRIDOR

120 485 1.7113 PHYSICIAN-EXAM ROOM / 114 CORRIDOR

50 195 0.7117 MHC PSYCHIATRIST

160 635 2.2125 MED RM. / 126 MHICM COOR. / 130 MHICM RN / 131 MHC PSYCHIATRIST

200 800 2.8132 SECRETARY / 136 MHC ADMIN. / 134 STORAGE / 133 CORRIDOR

100 400129 ELEC.

205 815 2.8106 MHC CLERKS / 135 COPY.-MAN.

145 570 2.0112 PC LPN / 115 PC RN / 116 MHC NURSES

105 410 1.4110 CONFERENCE

85 330 1.1109 MHC PHYS. ASSISTANTS

270 1080 3.7101 COMMON WAITING ROOM

250 985 3.4100 VEST. / 102 VENDING / 103 MEN / 104 CORRIDOR / 105 WOMEN

185 735 2.5140 BREAK ROOM / 141 MEN / 142 WOMEN

60 240 0.8165 CORRIDOR / 166 CDOP CLERK-COPY / 166 CDOP STORAGE

135 540 1.9168 CDOP GROUP ROOM

100 405 1.4164 CDOP GROUP ROOM

50 190146 ELEC. ROOM

125 505145 COMM. / MECH. 142

60 230 0.8148 CORRIDOR / 152 DETOX OBSERVATION

80 310 1.1157 ADDICTION THERAPIST / 158 CORRIDOR / 160 SAMPLES

130 525 1.8149 DETOX SOCIAL WORKER / 150 DETOX PHYS ASSISTANT-EXAM / 151 DETOX NURSE

190 760 2.6153 CDOP RECREATION

50 185 0.6154 ADDICTION THERAPIST / 163 CORRIDOR

190 765 2.7156 CDOP SOC. WRK / 161 ADD. THERAPIST / 162 ADD. THERAPIST / 167 ADD. THERAPIST

70 285 1.0155 CDOP COORDINATOR

LABEL AHU SERVED

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-1

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

49-AHU-2

N/A

N/A

N/A

45-AHU-1 & 45-AHU-2 CONTROL

SCHEMATICA & SEQUENCE &

BALANCE SCHEDULE

49 WLP NMT

M49-200

DI8 FILTER STATUS (DPS-1)

AIR HANDLING UNITS BALANCING SCHEDULE

LABEL UNITS SERVED

SUPPLY

CFM

OA CFM

COOLING

COIL GPM

49-AHU-1

VAV BOXES ON

WEST WING

8000 1200 16.8

49-AHU-2

VAV BOXES ON

EAST WING

6000 990 34.1

DIFFERENTIAL PRESSURE SENSOR

CWR

CWS

VFD

C W

S

C W

R

CAMPUS LOOP

TO AHU-1&2

FROM AHU-1&2

49-CWP-1

49-CWP-2

1 EXISTING DEVICE TO BE REUSED

IF FUNCTIONAL AND COMPATIBLE.

2 NEW DDC DEVICE.

KEYNOTES

TEMPERATURE SENSOR (TYP.)

SEQUENCE OF CONTROL: HEATING HOT WATER SYSTEM

1. WHEN ANY PUMP IS ON OPERATION ITS RESPECTIVE STEAM CONTROL VALVE SHALL MODULATE TO MAINTAIN THE LEAVING HOT WATER TEMPERATURE AT THE SET POINT ONCE FLOW IS PROVEN BY RESPECTIVE FLOW SWITCH.

2. THE LEAVING HOT WATER TEMPERATURE SHALL BE RESET INVERSELY WITH THE OUTDOOR AIR TEMPERATURE AS

SCHEDULED.

3. UPON A CALL FOR HEATING FROM ANY TERMINAL UNIT, HOT WATER PUMP 49-HWP-1 OR 49-HWP-2 SHALL ENERGIZE AND AFTER FLOW IS VERIFIED BY THE RESPECTIVE FLOW SWITCH, THE RESPECTIVE STEAM CONTROL VALVE SHALL MODULATE TO MAINTAIN LEAVING HOT WATER TEMPERATURE SETPOINT AT TEMPERATURE SENSOR (T1). HOT WATER PUMPS 49-HWP-1 AND 49-HWP-2 SHALL ALTERNATE AT REGULAR WEEKLY INTERVALS (ADJUSTABLE).

STR

STEAM CONV.

T

FROM BLDG 49

FROM

CAMPUS

STEAM

FROM

CAMPUS

STEAM

TO BLDG 49

SEQUENCE OF OPERATION: SECONDARY CHILLED WATER SYSTEM

1. GENERAL

1.1. UPON A CALL FOR COOLING FROM AIR HANDLING UNIT, THE LEAD CHILLED WATER PUMP SHALL

MODULATE THE PUMP TO MAINTAIN DIFFERENTIAL PRESSURE SETPOINT. (ADJUSTABLE).

DIFFERENTIAL PRESSURE SETPOINT SHALL BE RESET BASED ON VALVE POSITIONS.

1.2. SENSOR LOCATED 2

3 DOWN THE LONGEST CHILLED WATER PIPING BRANCH.

1.3. CHILLED WATER PUMPS 49-CWP-1 AND 49-CWP-2 SHALL ALTERNATE LEAD/LAG AT REGULARLY

WEEKLY INTERVALS (ADJUSTABLE).

F E

D C

B G

Alexandria, Louisiana

A&E Design - Upgrade Energy Management Control Systems

October 30, 2013

VA256-12-C-0253

VETERANS HEALTH CARE

SYSTEM

Alexandria, LA

A

U.S. Department of Veterans Affairs

KEYNOTES

EXISTING DEVICE TO BE REUSED

IF FUNCTIONAL AND

COMPATIBLE.

AI5

T

AI6

VFD

DO2

DI2

AO2

AI3

AI1

DO1

DI1

AO1

AI2

AI4

CAMPUS CHWS FLOWMETER

CHILLED WATER PUMP (49-CWP-1) VFD STATUSAI2

AI1

CHILLED WATER PUMP (49-CWP-2) VFD STATUSAI3

DIFFERENTIAL PRESSURE SENSORAI4

AI6

AI5 CHILLED WATER SUPPLY TEMPERATURE SENSOR

CHILLED WATER RETURN TEMPERATURE SENSOR

DI2

DI1

CHILLED WATER PUMP (49-CWP-2) STATUS

CHILLED WATER PUMP (49-CWP-1) STATUS

CHILLED WATER PUMP (49-CWP-1) VFD SPEED

CHILLED WATER PUMP (49-CWP-2) VFD SPEED

AO1

AO2

AO3

DO1

DO2

NOT USED

CHILLED WATER PUMP (49-CWP-1) START/STOP

CHILLED WATER PUMP (49-CWP-2) START/STOP

1 1

T

AI2

P

AMBIENT AIR TEMPERATURE

SENSOR INSTALLED ON NORTH SIDE

OF BUILDING

CONTROL

VALVE (N.C.)AO1

AO2

TO COND.

PUMP

TO COND.

PUMP

STEAM CONV.CONTROL

VALVE (N.C.)

STR

AI1 TEMPERATURE

SENSOR (TYP.)

T

DO1

DI1

DO2

DI2

HOT WATER BLDG. 49 SUPPLY TEMPERATURE SENSOR

AI2

AI1

AMBIENT AIR TEMPERATURE SENSOR

DI2

DI1 HOT WATER PUMP (49-HWP-1) STATUS

HOT WATER PUMP (49-HWP-2) STATUS

STEAM CONVERTER (49-C-2) CONTROL VALVE

STEAM CONVERTER (49-C-1) CONTROL VALVE

AO1

AO2

DO1

DO2

HOT WATER PUMP (49-HWP-1) START/STOP

HOT WATER PUMP (49-HWP-2) START/STOP

FT

CHW & HHW SYSTEMS & VAV

TERMINAL CONTROL SCHEMATICS &

SEQUENCES

49 WLP NMT

M49-201

COIL

H W

R

V-1

NC

HTG

AI2

AO1

PANEL

DDC CONTROL

T

AI3

T-1

AI4

M

AI1

NOTES:

1. PROVIDE NEW VAV CONTROLLER.

T

T-2

HTG. SET

POINT

CLG. SET

POINT

VALVE OPEN MAX. AIR

VALVE CLOSED

MIN. AIR

SUPPLY AIR

REHEAT COIL

VALVE

ROOM TEMPERATURE

°F (-°C)

°F (+°C)

VAV CONTROL SCHEDULE

AI5

SEQUENCE OF OPERATION: VAV TERMINAL (TYP.)

1. OCCUPIED MODE

1.1. A SPACE SENSOR SHALL TRANSMIT ROOM TEMPERATURE AND HUMIDITY TO THE BOX CONTROLLER, WHICH SHALL VERY THE PRIMARY AIRFLOW AND VARY HEATING VALVE TO MAINTAIN SPACE

TEMPERATURE SETPOINTS.

1.2. A RISE IN SPACE TEMPERATURE ABOVE SETPOINT MODULATE PRIMARY AIRFLOW TO MAX. CFM

SETPOINT INTO THE SPACE. A DROP IN SPACE TEMPERATURE SHALL MODULATE THE PRIMARY

AIRFLOW TO MIN. CFM SETPOINT. A FURTHER DROP IN SPACE TEMPERATURE SHALL MODULATE THE BOX REHEAT CONTROL VALVE OPEN TO HEAT THE SPACE TO MAINTAIN SETPOINT (+/- 0.5°F). THE ADJUSTABLE TOLERANCE OF (+/- 0.5°F) HAS BEEN SELECTED TO PREVENT VALVE HUNTING. VAV BOXES SHALL HAVE SEPARATE HEATING AND COOLING SPACE TEMPERATURE SETPOINTS FOR BOTH

OCCUPIED AND UNOCCUPIED MODES.

2. UNOCCUPIED MODE

2.1. WHEN THE SYSTEM IS INDEXED TO UNOCCUPIED MODE, THE AIR HANDLING SHALL STOP, THE BOX DAMPER SHALL CLOSE, AND THE REHEAT VALVE SHALL CLOSE. IF THE SPACE TEMPERATURE FALLS

BELOW THE NIGHT SETBACK POINT, THE AIR HANDLING UNIT SHALL START,

LOCAL DDC CONTROLLER

AI2

AI1

AI4

INTAKE AIR DAMPER STATUS

AI3

HEATING COIL CONTROL VALVE (V-1)

DISCHARGE AIR TEMPERATURE SENSOR (T-1)

ROOM AIR TEMPERATURE SENSOR (T/H-1)

AO1 HEATING COIL CONTROL VALVE (V-1)

AI5 ROOM AIR HUMIDITY SENSOR (T/H-1)

NOTES

1. PROVIDE NEW CONTROLLER.

CONNECT TO EXISTING

ELECTRICAL SERVICES.

NOTES

1. PROVIDE NEW CONTROLLER. CONNECT TO

EXISTING ELECTRICAL SERVICE.

EXIST ROOM THERMOSTAT & HUMIDITY

SENSOR TO REMAIN AND REUSED.

180 160 140

HOT WATER SETPOINT

(DEG F)

OUTDOOR

AIR

TEMPERATURE

(DEG F)

HEATING HOT WATER RESET

SCHEDULE

F

DI3

FLOW SWITCH

(TYP.)

F

DI4

AI3 STEAM CONVERTER (49-C-2) CONTROL VALVE STATUS

AI4 STEAM CONVERTER (49-C-1) CONTROL VALVE STATUS

DI4

DI3 STEAM CONVERTER (49-C-2) FLOW SWITCH

STEAM CONVERTER (49-C-1) FLOW SWITCH

AI3

AI4