36C25618U0323-0002014.pdf

EXIST 2-HWP10

EXIST 2-HX-4

EXIST 2-HWP9

EXIST 2-HX-3

EXIST DDC

CONTROL PANEL

EXIST 2-SCHWP3

EXIST 2-SCHWP4

EXIST 2-SCHWP6

EXIST DDC

CONTROL PANEL

EXIST 2-SCHWP1

EXIST 2-SCHWP5

EXIST DDC

CONTROL PANEL

EXIST DDC

CONTROL PANEL

EXIST 2-HWP7

EXIST 2-SCHWP2

EXIST

2-HWP8

EXIST 2-HX-1 EXIST

2-HX-2

NOTES:

1. EXISTING DDC SYSTEM IS JCI. REPLACE

CONTROLLERS IN EXIST PANELS TO FULLY

INTEGRATE ALL EQUIPMENT TO SIEMENS

CAMPUS SYSTEM. CONNECT NEW

CONTROLLERS TO EXISTING 120V

ELECTRICAL SERVICE.

PROVIDE CHILLED WATER METER IN

SUPPLY PRIOR TO ANY TAKEOFF. METER

WILL BE FOR THE TOTAL OF BLDGS 1, 2, & 3.

CHW METERS WILL BE INSTALLED IN

FUTURE PROJECTS FOR BLDGS 1 & 3, AT

WHICH TIME CHW USAGE FOR BLDG 2 CAN

BE DETERMINED.

CHILLED WATER METER PANEL. CONNECT TO

CAMPUS DDC CONTROL SYSTEM.

VFD VFD

PROVIDE NEW 7.5 HP VFD FOR

2-SCHWP2. CONNECT TO EXIST POWER

AND NEW CONTROLS.

PROVIDE NEW 7.5 HP VFD FOR

2-SCHWP4. CONNECT TO EXIST POWER

AND NEW CONTROLS.

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

BASEMENT FLOOR PLAN -

MECHANICAL

2 WLP NMT

M2-100 10-30-13

NOTES:

1. EXISTING INDUCTION UNITS AND CONTROLS

TO REMAIN.

EXISTING ELEC METER

ENCLOSURE. CONNECT

TO CAMPUS DDC

CONTROLS.

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

2 WLP NMT

M2-101

EXIST WINDOW

A/C UNIT TO

REMAIN ON UNIT

CONTROLS.

KEYNOTES:

EXISTING FAN COIL UNIT TO REMAIN.

REPLACE FAN COIL UNIT CONTROLLER

AND CONTROL PANELS TO FULLY

INTEGRATE TO SIEMENS CAMPUS

SYSTEM.

EXIST EF-2-1

T T

T

T T

TT

T

T

T T

T

T

T

T

T

T

TT

T

T

T T T T T T

TT

T

T

T

T

T

T

T

T

T

T

T T T T T T

T

T

T T

T

T

T

T

T

T

T

T

T

T TT T

T

T

T

T

T

1 1

1 1

1 1

1 1 1

1 1

1 1

1 1

1 1

1 1

1 1

EXIST EXHAUST FAN &

WINDOW A/C UNIT TO

REMAIN ON LOCAL

CONTROLS.

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

2ND FLOOR PLAN - MECHANICAL

2 WLP NMT

M2-102

EXIST EF-2-6

EXIST EF-2-5

T T

T

T TT

T

T

T

T

TT

T

T T

T

T

T

T

T T

T

T

T

T

T

T

T

T

T

T

TT

T

T

T TTTT

T

T

T

T

T

T T

T

T

T

T

T

T

T

T T

T

T

T T

T T

T T

T T

EXIST EF-2-4

EXIST EF-2-7

1 1

1 1

1 1 1

1 1

1 1

1 1

1 1

1 1

EXIST EF-2-2

EXIST EF-2-3

KEYNOTES:

EXISTING FAN COIL UNIT TO REMAIN.

REPLACE FAN COIL UNIT CONTROLLER

AND CONTROL PANELS TO FULLY

INTEGRATE TO SIEMENS CAMPUS

SYSTEM.

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

3RD FLOOR PLAN - MECHANICAL

2 WLP NMT

M2-103

1. NO EXISTING OR NEW MECHANICAL EQUIPMENT TO

BE CONTROLLED ON THIS FLOOR.

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

4TH FLOOR PLAN - MECHANICAL

2 WLP NMT

M2-104

EXISTING

2-AC-22

EXISTING

2-AC-21

EXISTING

2-AC-23

2-AC-22 IS CURRENTLY

INOPERABLE AND IS NOT TO BE

CONTROLLED.

2-AC-21 IS CURRENTLY FULLY PNEUMATIC

CONTROLS. REPLACE ALL CONTROL DEVICES WITH

DDC AND CONNECT TO NEW DDC CAMPUS

SYSTEM.

2-AC-23 IS CURRENTLY FULLY PNEUMATIC

CONTROLS. REPLACE ALL CONTROL

DEVICES WITH DDC AND CONNECT TO

NEW DDC CAMPUS SYSTEM.

HVAC

KEYNOTES:

PROVIDE NEW DDC CONTROL PANEL. CONTRACTOR

SHALL PROVIDE 120V POWER CONNECTION TO NEW

CONTROL PANEL. CONTRACTOR SHALL ROUTE TO

NEAREST 120V PANEL WITH SPARE CAPACITY, INSTALL

NEW 20A-1 POLE CIRCUIT BREAKER, & MAKE

CONNECTION. PROVIDE 20A SNAP SWITCH AT DDC

PANEL FOR DISCONNECT. CONTRACTOR TO VERIFY

120V PANEL LOCATION DURING PRE-BID

WALKTHROUGH.

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

ATTIC FLOOR PLAN - MECHANICAL

2 WLP NMT

M2-105

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

2-AC-21 & 2-AC-23 CONTROL

SCHEMATIC & SEQUENCE

2 WLP NMT

M2-200

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING PNEUMATIC AND ARE TO

BE REPLACED WITH APPROPIATE DDC DEVICES.

2. PROVIDE NEW DDC CONTROLLER. CONNECT NEW CONTROLLER

TO EXISTING 120V ELECTRICAL SERVICE.

3. TEST AND BALANCE ALL AIR FLOWS TO AHU, FCU, VAV BOXES

(MAX. AND MIN.), ETC PRIOR TO STARTING WORK. PROVIDE

REPORT TO VA. BALANCE ALL AIR FLOWS TO

PRE-CONSTRUCTION VALUES.

SUPPLY

STR

FAN

DO1

DI4

COIL

L P

S

V-1

PREHEAT

AI6

AO3

DI3

AO1

AI1

SUPPLY AIR

PANEL

DDC CONTROL

AI3

T-1

T

T-2

OUTSIDE AIR

D-1

AI4

RETURN AIR

AI7

T-3

T-4

C H

W R

COIL

CLG

V-2

NC

AI8

AO4

DI5

AI11

T-7

SPS-1

DI7

DPS-1

DI1

AIR

FILTER

DI6

SD-2

AI9

T-5

T-6

SEQUENCE OF OPERATION

1. GENERAL

1.1 THE AIR HANDLING UNIT SHALL BE STARTED AND STOPPED AUTOMATICALLY AT THE ECC. THE HOA SWITCH SHALL BE KEPT IN THE AUTO POSITION. HAND AND OFF POSITIONS SHALL BE USED FOR MAINTENANCE ONLY. UPON RECEIVING A START COMMAND THE SUPPLY FAN WILL START ONLY AFTER ALL INTERNAL SAFETIES ARE PROVEN. ONCE FAN RUN STATUS IS PROVEN BY A CURRENT SENSING RELAY, THE

CONTROLS SHALL OPERATE ACCORDING TO THE SEQUENCES AS DESCRIBED BELOW.

2. DAMPER CONTROL

3.1 DURING OCCUPIED MODE, OA DAMPER SHALL BE FULLY OPEN AND RA DAMPERS SHALL BE FULLY CLOSED.

3.2 DURING UNOCCUPIED MODE, IF THE UNIT IS RUNNING THE OA DAMPER SHALL BE FULLY CLOSED AND THE

RA DAMPER SHALL BE FULLY OPEN.

3. TEMPERATURE CONTROL

3.1 THE PREHEAT COIL VALVE (V-1) SHALL MODULATE TO MAINTAIN A PREHEAT DISCHARGE TEMPERATURE AS

SENSED BY (T-3) OF 45°F.

3.2 WHEN OA DEWPOINT IS ABOVE 55°F THE CHILLED WATER COIL VALVE (V-2) SHALL MODULATE TO MAINTAIN A UNIT DISCHARGE TEMPERATURE AS SENSED BY (T-7) OF 57°F. WHEN THE OA DEWPOINT IS BELOW 55°F THE CHILLED WATER COIL VALVE (V-2) SHALL MODULATE TO MAINTAIN A UNIT DISCHARGE TEMPERATURE

AS SENSED BY (T-7) OF 75°F.

3.3 WHEN ALL ZONES ARE CALLING FOR HEATING PREHEAT VALVE (V-1) AND REHEAT VALVE (V-3) SHALL

MODULATE TO MAINTAIN A DISCHARGE AIR TEMPERATURE OF 90°F AS SENSED BY (T-7).

4. ALARMS

4.1 THE UNIT SHALL STOP UPON ANY OF THE SAFETIES BEING TRIPPED REGARDLESS OF THE MODE OF

OPERATION (AUTOMATIC, HAND OR BYPASS).

4.2 THE RETURN AIR SMOKE DETECTOR, SD-1, OR THE SUPPLY AIR SMOKE DETECTOR, SD-2, SHALL STOP THE UNIT UPON SENSING COMBUSTION PRODUCTS IN THE SYSTEM. SMOKE DETECTORS MUST BE MANUALLY

REST AFTER AN ALARM CONDITION IN ORDER FOR THE FAN TO RESTART.

4.3 A TEMPERATURE LOW LIMIT SWITCH, T-4, SHALL STOP THE UNIT, CLOSE THE OUTSIDE AIR DAMPER, OPEN THE PREHEAT VALVE, AND SEND A CRITICAL ALARM TO THE ECC UPON SENSING A FALL IN TEMPERATURE BELOW SETPOINT (35°F ADJUSTABLE). THE LOW LIMIT SWITCHES MUST BE MANUALLY RESET AFTER AN

ALARM CONDITION.

4.4 A TEMPERATURE HIGH LIMIT, T-6, WILL SHUTDOWN THE FAN AND SEND AN ALARM TO THE ECC UPON A RISE IN DISCHARGE AIR ABOVE 125°F. THE HIGH LIMIT SWITCH MUST BE MANUALLY RESET AFTER AN ALARM.

4.5 A DISCHARGE AIR HIGH STATIC PRESSURE SAFETY SWITCH, SPS-1, LOCATED AT THE SUPPLY FAN DISCHARGE WILL STOP THE UNIT UPON SENSING HIGH SUPPLY DUCT STATIC ABOVE 3 IN. STATIC

PRESSURE (ADJUSTABLE) TO PREVENT OVER PRESSURIZING THE DUCTWORK.

5. MONITORING

5.1 THE DCC SYSTEM MONITORS THE DIFFERENTIAL PRESSURE ACROSS THE FILTER AND GENERATES AN ALARM IF THE DIFFERENTIAL PRESSURE INCREASES ABOVE THE SETPOINT OF 0.75 IN. WC. (ADJUSTABLE)

TO PROVIDE NOTIFICATION OF A DIRTY FILTER.

6. SHUTDOWN

6.1 STOPPING THE UNIT SHALL DE-ENERGIZE THE CONTROL LOOPS AND SEND THE CONTROL VALVES AND

OUTSIDE AIR DAMPER TO THE CLOSED POSITION.

T T T T T T

MIXED AIR TEMPERATURE SENSOR (T-1)

RETURN AIR TEMPERATURE SENSOR (T-2)AI4

AI1

RETURN AIR HUMIDITY SENSOR (H-1)AI5

AI6

AI8

AI9

AI7

AI10

AI11

PREHEAT COIL DISCHARGE AIR TEMPERATURE SENSOR (T-3)

CHILLED WATER CONTROL VALVE (V-2)

COOLING COIL DISCHARGE AIR TEMPERATURE SENSOR (T-5)

OUTSIDE AIR TEMPERATURE SENSOR (T-8)

DI4

DI5

DI2

DI1

DI3

STEAM PREHEAT CONTROL VALVE (V-1)

CHILLED WATER CONTROL VALVE (V-2)

AO3

AO4

AHU DISCHARGE TEMPERATURE SENSOR (T-7)

FILTER STATUS (DPS-1)

LOW LIMIT TEMPERATURE SENSOR (T-4) STATUS

SUPPLY FAN STATUS

SUPPLY AIR SMOKE DETECTOR (SD-2) STATUS

HIGH LIMIT TEMPERATURE SENSOR (T-6) STATUS

SUPPLY AIR HIGH STATIC PRESSURE SWITCH (SPS-1) STATUS

AI2

AO2

D-2

DI6

DO3 SUPPLY FAN START/STOP

DI2

SD-1

NO

COIL

L P

S

V-3

REHEAT

AI10

AO5

NO

T

H-1

AI5

STEAM PREHEAT CONTROL VALVE (V-1)

STEAM REHEAT CONTROL VALVE (V-3)

AI12

RETURN AIR SMOKE DETECTOR (SD-1) STATUS

DI7

STEAM REHEAT CONTROL VALVE (V-3)AO5

AI2

AI1 OUTSIDE AIR DAMPER (D-1) STATUS

RETURN AIR DAMPER (D-2) STATUS

AO1

AO2

OUTSIDE AIR DAMPER (D-1)

RETURN AIR DAMPER (D-2)

T

T-8

T

H-2

AI12 AI13

OUTSIDE AIR HUMIDITY SENSOR (H-2)AI13

SUPPLY

FAN COIL

H W

S

V-2

HTG

AI2

AO2DO1

DI1

PANEL

DDC CONTROL

AI3

T-1

D-1

RETURN AIR

C H

W R

COIL

CLG

V-1

AI1

AO1DO2

DI2

NC

SUPPLY AIR

T-2

AI4

SPACE

THERMOSTAT

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING DDC.

2. FAN COIL UNIT CONTROLLER TO BE REPLACED.

3. SPACE THERMOSTAT TO BE REPLACED.

4. UNIT TEMP SENSORS AND ACTUATORS CAN BE

REUSED IF FUNCTIONAL AND COMPATIBLE WITH

NEW CONTROLS.

5. TYPICAL OF 110 UNITS.

SEQUENCE OF OPERATION: FAN COIL UNIT (TYP.)

1. SUPPLY FAN CONTROL

1.1. WHEN THE THERMOSTAT FAN MODE IS SET TO "ON", THE SUPPLY FAN SHALL RUN

CONTINUOUSLY.

1.2. WHEN THE THERMOSTAT FAN MODE IS SET TO "AUTO", THE SUPPLY FAN SHALL

RUN ANYTIME THERE IS A CALL FOR HEATING OR COOLING.

2. TEMPERATURE CONTROL

2.1. THE UNIT SHALL CONTROL TO MAINTAIN THE ZONE TEMPERATURE SETPOIINT AS

SENSED BY THE ZONE TEMPERATURE SENSOR, T-2.

3. OCCUPIED MODE

3.1. THE OCCUPANCY MODE SHALL BE CONTROLLED VIA A NETWORK INPUT.

4. OUTSIDE AIR DAMPER

4.1. OUTSIDE AIR DAMPER SHALL BE OPEN WHEN RESPECTIVE AHU IS ON.

T

T

AI2

AI1

AI3

OUTSIDE AIR DAMPER (D-1) STATUSDI1

DI2

AO1

AO2

DO1 OUTSIDE AIR DAMPER (D-1)

CHILLED WATER CONTROL VALVE (V-1)

HOT WATER CONTROL VALVE (V-2)

DO2 SUPPLY FAN START/STOP

CHILLED WATER CONTROL VALVE (V-1)

HOT WATER CONTROL VALVE (V-2)

DISCHARGE AIR TEMPERATURE SENSOR (T-1)

AI4 ZONE TEMPERATURE SENSOR (T-2)

SUPPLY 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

FAN COIL UNIT (TYP.) & EXHAUST

FAN (TYP.) CONTROL SCHEMATICS,

SEQUENCES & BALANCE SCHEDULES

2 WLP NMT

M2-201

EXHAUST

FAN

EXHAUST FAN STATUSDI1

EXHAUST FAN (7-EF#4) START/STOPDO1

DI1

DO1

PANEL

DDC CONTROL

SEQUENCE OF OPERATION: EXHAUST FAN (TYP.)

1. START/STOP CONTROL

1.1. FAN TO BE STARTED AND STOPPED BY A TIME SCHEDULE OF 24 HOURS A DAY (ADJ.).

2. ALARM

2.1. ALARM SHALL BE GENERATED WHEN STATUS DOES NOT MATCH COMMAND.

2ND FLOOR FAN COIL UNITS BALANCING SCHEDULE

QTY. FCU

PER ROOM

AREA SERVED

SUPPLIED BY

AHU

TOTAL

CFM

OA CFM

GPM

COOLING HEATING

2 201 2-AC-21 220 30 1.50 1.0

1 201C 2-AC-21 420 45 2.25 1.0

1 201B 2-AC-21 450 45 2.50 1.0

1 203 2-AC-21 200 30 1.50 1.0

1 203 2-AC-21 400 40 2.25 1.0

1 205 2-AC-21 150 20 0.75 0.75

1 206 2-AC-21 280 30 1.25 1.0

1 208 2-AC-21 240 30 1.25 0.75

1 209 2-AC-21 450 45 2.50 1.0

2 210 2-AC-21 570 40 3.50 1.0

2 210 2-AC-21 320 40 2.25 1.0

1 210 2-AC-21 250 40 1.25 1.0

1 212 2-AC-21 150 30 1.0 0.75

1 213 2-AC-21 150 30 1.0 0.75

1 214 2-AC-21 150 30 1.0 0.75

1 217 2-AC-21 560 90 4.0 1.0

1 217B 2-AC-21 840 90 5.75 0.75

1 217E 2-AC-21 560 90 4.0 1.0

1 217F 2-AC-21 560 90 4.0 1.0

1 POST DEPLOYMENT CLERK 2-AC-21 560 90 4.0 1.0

1 218 2-AC-21 80 20 0.75 0.50

1 219 2-AC-21 190 30 1.25 0.75

2 220 2-AC-21 450 50 3.25 1.0

2 211 2-AC-21 350 40 2.0 1.0

2 222 2-AC-21 250 40 1.25 1.0

1 226 2-AC-21 570 45 3.0 1.0

1 227 2-AC-21 350 40 2.0 1.0

1 228 2-AC-21 320 40 1.75 1.0

1 229 2-AC-21 270 40 1.25 1.0

1 230 2-AC-21 320 40 1.75 1.0

1 231 2-AC-21 340 40 1.75 1.0

1 232 2-AC-23 330 30 1.75 1.0

1 233 2-AC-23 325 30 1.75 1.0

1 234 2-AC-23 200 20 1.00 0.75

1 235 2-AC-23 300 40 1.50 1.0

1 236 2-AC-23 400 50 2.0 1.0

1 237 2-AC-23 80 20 0.75 0.50

1 237A 2-AC-23 200 30 1.25 1.0

2 238 2-AC-23 530 40 2.75 1.0

2 239 2-AC-23 530 40 2.75 1.0

1 240 2-AC-23 210 45 1.50 1.0

1 241A 2-AC-23 620 65 3.50 0.75

1 241 2-AC-23 840 120 6.70 1.0

1 242 2-AC-23 630 60 3.00 0.75

1 242B 2-AC-23 840 80 5.75 0.75

1 242C 2-AC-23 760 50 3.50 0.75

1 242D 2-AC-23 250 30 1.25 1.0

1 245 2-AC-23 90 30 0.75 0.50

1 246 2-AC-23 80 20 0.75 0.50

1 247 2-AC-23 80 20 1.25 0.50

4 248 2-AC-23 530 55 3.50 1.0

2 249 2-AC-23 270 40 1.50 1.0

1 250 2-AC-23 430 45 2.50 1.0

1 252 2-AC-21 200 20 1.25 0.75

1 254 2-AC-21 250 30 1.25 1.0

1 255 2-AC-21 170 25 1.0 0.75

1 256 2-AC-21 450 45 2.50 1.0

2ND FLOOR SOUTHEAST

CORRIDOR

2-AC-21 830 90 3.50 0.75

2ND FLOOR SOUTHWEST

CORRIDOR

2-AC-21 830 90 3.75 0.75

1 2ND FLOOR NORTH CORRIDOR 2-AC-23 830 80 3.50 0.75

OUTSIDE AIR

FROM AHU

3RD FLOOR FAN COIL UNITS BALANCING SCHEDULE

QTY. FCU

PER ROOM

AREA SERVED

SUPPLIED BY

AHU

TOTAL

CFM

OA CFM

GPM

COOLING HEATING

2 301 2-AC-21 300 40 2.25 1.0

1 301C 2-AC-21 450 45 2.50 1.0

1 301B 2-AC-21 540 60 2.50 1.0

2 303 2-AC-21 430 60 3.50 1.0

1 305 2-AC-21 150 20 0.75 0.75

1 306 2-AC-21 150 20 0.75 0.75

2 308 2-AC-21 280 35 1.50 1.0

1 309 2-AC-21 270 45 1.75 1.0

2 310 2-AC-21 550 50 3.0 1.0

2 311 2-AC-21 430 50 2.75 1.0

1 312 2-AC-21 130 45 0.75 0.75

1 313 2-AC-21 240 65 1.25 1.0

4 316 2-AC-21 750 90 5.25 0.75

1 316B 2-AC-21 840 90 6.70 0.75

1 319 2-AC-21 80 20 0.75 0.5

1 320 2-AC-21 240 65 1.25 1.0

1 321 2-AC-21 270 45 1.25 1.0

1 322 2-AC-21 460 45 2.75 1.0

1 323 2-AC-21 460 45 2.50 1.0

1 324 2-AC-21 270 45 1.25 1.0

1 325 2-AC-21 270 45 1.25 1.0

1 326 2-AC-21 230 30 1.25 1.0

1 329 2-AC-21 230 30 1.25 1.0

1 330 2-AC-21 270 45 1.25 1.0

1 331 2-AC-21 200 30 1.25 1.0

1 332 2-AC-21 270 30 1.0 1.0

2 333 2-AC-21 250 25 1.25 1.0

1 334 2-AC-23 750 60 3.50 0.75

1 335 2-AC-23 840 90 5.80 0.75

1 336 2-AC-23 300 30 1.50 1.0

1 337 2-AC-23 350 30 2.0 1.0

1 338 2-AC-23 310 30 1.0 1.0

3 339 2-AC-23 400 35 2.50 1.0

3 340 2-AC-23 320 35 2.0 1.0

2 341 2-AC-23 120 35 1.0 0.50

1 342 2-AC-23 550 50 2.50 1.0

1 342A 2-AC-23 840 240 6.70 0.75

4 343 2-AC-23 630 70 4.50 1.0

1 346 2-AC-23 150 20 0.75 0.5

1 347 2-AC-23 200 45 1.25 0.5

2 348 2-AC-23 450 50 3.0 1.0

2 349 2-AC-23 330 25 2.0 1.0

1 350 2-AC-23 280 45 1.25 0.75

1 351 2-AC-23 280 45 1.25 0.75

1 352 2-AC-23 280 45 1.25 0.75

1 353 2-AC-23 300 45 1.25 0.75

1 355 2-AC-23 220 30 1.0 0.75

1 357 2-AC-23 220 40 1.25 0.75

1 358 2-AC-23 180 20 1.0 0.50

1 359 2-AC-23 400 40 2.25 1.0

3RD FLOOR SOUTHEAST

CORRIDOR

2-AC-21 1000 80 6.70 0.75

3RD FLOOR SOUTHWEST

CORRIDOR

2-AC-21 1000 80 6.70 0.75

1 3RD FLOOR NORTH CORRIDOR 2-AC-23 1100 80 6.70 0.75

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

NORTH & SOUTH SCHWS CONTROL

SCHEMATICS & SEQUENCES

2 WLP NMT

M2-202

CHWS TO FCU'S

CHWR FROM FCU'S

STR

2-SCHWP3

2-SCHWP4

CHWS TO 2-AC-23

CHWR FROM 2-AC-23

CAMPUS

PRIMARY CHW

SUPPLY

CHWS TO INDUCTION UNITS

2-SCHWP6

CHWR FROM INDUCTION UNITS

CAMPUS PRIMARY

CHW RETURN

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING

DDC. TEMPERATURE SENSORS, VALVE

ACTUATORS, ETC. CAN BE REUSED IF

FUNCTIONAL AND COMPATIBLE.

2. CONTROLLERS ARE TO BE REPLACED.

3. SERVES NORTHSIDE OF BLDG 2, 2ND

AND 3RD FLOOR FCUS AND INDUCTION

UNITS.

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING DDC.

TEMPERATURE SENSORS, VALVE ACTUATORS, ETC.

CAN BE REUSED IF FUNCTIONAL AND COMPATIBLE.

2. CONTROLLERS ARE TO BE REPLACED. CONNECT NEW

CONTROLLERS TO EXISTING ELECTRICAL SERVICE.

3. SERVES SOUTHSIDE OF BLDG 2, 2ND AND 3RD FLOOR

FCUS AND INDUCTION UNITS.

2-VLV6-0

2-VLV4-0

SEQUENCE OF OPERATION

1. START/STOP CONTROLS

1.1. THE EXISTING CHILLED WATER SUPPLY FROM THE CENTRAL COOLING PLANT PROVIDES CHILLED WATER TO THE SECONDARY PUMPING SYSTEM FOR BUILDING 2. SYSTEM ENABLE SHALL BE CONTROLLED BY THE DDC SYSTEM.

1.2. WHEN THE SYSTEM IS ENABLED THE SECONDARY CHILLED WATER PUMPS SHALL BE COMMANDED "ON".

1.3. WHEN THE SYSTEM IS "OFF", THE SYSTEM SHALL BE DISABLED.

2. CHILLED WATER VALVE CONTROLS

2.1. THE VALVES SHALL MODULATE TO MAINTAIN THE DESIRED CHILLED WATER SUPPLY TEMPERATURE TO SETPOINT FOR EACH

SECTION. INITIAL SETTING WILL BE 60°F FOR THE INDUCTION UNITS SECTION.

3. CHILLED WATER PUMP CONTROLS

3.1. WHEN ENABLED, THE PUMPS WILL BE STARTED. IF THE PUMP STATUS DOES NOT MATCH THE COMMAND, AN ALARM SHALL BE GENERATED, AND THE PUMP SHALL BE STOPPED. THE PUMP SHALL AUTOMATICALLY RETRY TO START

3.2. 2-SCHWP4 VFD SHALL MODULATE TO MAINTAIN STATIC PRESSURE SETPOINT. STATIC PRESSURE SETPOINT SHALL BE RESET BASED

ON VALVE POSITION.

SEQUENCE OF OPERATION

1. START/STOP CONTROLS

1.1. THE EXISTING CHILLED WATER SUPPLY FROM THE CENTRAL COOLING PLANT PROVIDES CHILLED WATER TO THE SECONDARY PUMPING

SYSTEM FOR BUILDING 2. SYSTEM ENABLE SHALL BE CONTROLLED BY THE DDC SYSTEM.

1.2. WHEN THE SYSTEM IS ENABLED THE SECONDARY CHILLED WATER PUMPS SHALL BE COMMANDED "ON".

1.3. WHEN THE SYSTEM IS "OFF", THE SYSTEM SHALL BE DISABLED.

2. CHILLED WATER VALVE CONTROLS

2.1. THE VALVES SHALL MODULATE TO MAINTAIN THE DESIRED CHILLED WATER SUPPLY TEMPERATURE TO SETPOINT FOR EACH SECTION. INITIAL

SETTING WILL BE 60°F FOR THE INDUCTION UNITS SECTION.

3. CHILLED WATER PUMP CONTROLS

3.1. WHEN ENABLED, THE PUMPS WILL BE STARTED. IF THE PUMP STATUS DOES NOT MATCH THE COMMAND, AN ALARM SHALL BE GENERATED, AND THE PUMP SHALL BE STOPPED. THE PUMP SHALL AUTOMATICALLY RETRY TO START.

3.2. 2-SCHWP1 & 2-SCHWP2 VFD SHALL MODULATE TO MAINTAIN STATIC PRESSURE SETPOINT. STATIC PRESSURE SETPOINT SHALL BE RESET

BASED ON VALVE POSITION.

AI3

AO1 T

AI5

T

AI2 AI4

AO2 T

AI6

VFD

STR

DI2 DO2

DI3 DO3

DI1 DO1

AI2

AI1

AI3

AI4

AI6

AI5

INDUCTION UNITS CHWS CONTROL VALVE (2-VLV6-0)

FCU'S CHWS TEMPERATURE SENSOR

INDUCTION UNITS CHWS TEMPERATURE SENSOR

INDUCTION UNITS CHILLED WATER BYPASS TEMPERATURE SENSOR

DI1

CHILLED WATER PUMP (2-SCHWP4) STATUS

CHILLED WATER PUMP (2-SCHWP3) STATUS

DI2

CHILLED WATER PUMP (2-SCHWP6) STATUSDI3

DO1

DO2

CHILLED WATER PUMP (2-SCHWP3) START/STOP

CHILLED WATER PUMP (2-SCHWP4) START/STOP

AO1

AO2 INDUCTION UNITS CHWS CONTROL VALVE (2-VLV6-0)

DO3 CHILLED WATER PUMP (2-SCHWP5) START/STOP

CHWS TO FCU'S

CHWR FROM FCU'S

VFD

2-SCHWP1

2-SCHWP2

CHWS TO FCU'S AND AHU'S

CHWR FROM FCU'S AND AHU'S

CAMPUS

PRIMARY CHW

SUPPLY

CHWS TO INDUCTION UNITS

2-SCHWP5

CHWR FROM INDUCTION UNITS

CAMPUS PRIMARY

CHW RETURN

2-VLV5-0

2-VLV2-0

AI3

AO1 T

AI5

T

AI2 AI4

AO2 T

AI6

VFD

STR

DI2 DO2

DI3 DO3

DI1 DO1

AI2

AI1

AI3

AI4

AI6

AI5

2-SCHWP1 CHILLED WATER PUMP VFD STATUS

2-SCHWP1 CHILLED WATER PUMP DIFFERENTIAL PRESSURE SENSOR

INDUCTION UNITS CHWS CONTROL VALVE (2-VLV5-0)

FCU'S CHWS TEMPERATURE SENSOR

INDUCTION UNITS CHWS TEMPERATURE SENSOR

INDUCTION UNITS CHILLED WATER BYPASS TEMPERATURE SENSOR

DI1

CHILLED WATER PUMP (2-SCHWP2) STATUS

CHILLED WATER PUMP (2-SCHWP1) STATUS

DI2

CHILLED WATER PUMP (2-SCHWP5) STATUSDI3

DO1

DO2

CHILLED WATER PUMP (2-SCHWP1) START/STOP

CHILLED WATER PUMP (2-SCHWP2) START/STOP

AO1

AO2

2-SCHWP1 CHILLED WATER PUMP VFD SPEED

INDUCTION UNITS CHWS CONTROL VALVE (2-VLV5-0)

DO3 CHILLED WATER PUMP (2-SCHWP5) START/STOP

KEYNOTES:

DEMO CHILLED WATER BYPASS LINE AND

3-WAY CONTROL VALVE ON FCU CHILLED

WATER PUMP. CONNECT PUMP INLET TO

CAMPUS PRIMARY CHILLED WATER SUPPLY.

AI3

P

AI1 AO1

AI7 2-SCHWP-1 SYSTEM DIFFERENTIAL PRESSURE SETPOINT SENSOR

P AI7

INSTALL DIFFERENTIAL PRESSURE

SETPOINT SENSOR 2

3 DOWN LONGEST

RUN IN ATTIC MECH. RM.

AI8 AO3

P AI9

INSTALL DIFFERENTIAL PRESSURE

SETPOINT SENSOR 2

3 DOWN LONGEST

RUN IN ATTIC MECH. RM.

AI8 2-SCHWP-2 CHILLED WATER PUMP VFD STATUS

AI9 2-SCHWP-2 SYSTEM DIFFERENTIAL PRESSURE SETPOINT SENSOR

AO3 2-SCHWP2 CHILLED WATER PUMP VFD SPEED

KEYNOTES:

DEMO CHILLED WATER BYPASS LINE AND

3-WAY CONTROL VALVE ON FCU CHILLED

WATER PUMP. CONNECT PUMP INLET TO

CAMPUS PRIMARY CHILLED WATER SUPPLY.

AI1 AO1

2-SCHWP4 CHILLED WATER PUMP VFD SPEED

2-SCHWP4 CHILLED WATER PUMP VFD STATUS

P AI3

INSTALL DIFFERENTIAL PRESSURE

SETPOINT SENSOR 2

3 DOWN LONGEST

RUN IN ATTIC MECH. RM.

2-SCHWP-4 SYSTEM DIFFERENTIAL PRESSURE SETPOINT SENSOR

1. ALL CONTROL DEVICES ARE EXISTING DDC.

TEMPERATURE SENSORS, VALVE ACTUATORS, ETC. CAN

BE REUSED IF FUNCTIONAL AND COMPATIBLE.

2. CONTROLLERS ARE TO BE REPLACED.

3. SERVES SOUTHSIDE OF BLDG 2, 2ND AND 3RD FLOOR

FCU'S AND INDUCTION UNITS.

SEQUENCE OF OPERATION

1. START/STOP CONTROLS

1.1. THE HEATING SYSTEM SHALL AUTOMATICALLY START WHEN THE

OUTSIDE AIR TEMPERATURE FALLS BELOW THE SYSTEM ENABLE

SETPOINT.

1.2. WHEN THE SYSTEM IS "ON":

1.2.1. STEAM CONTROL VALVES SHALL MODULATE TO MAINTAIN THE

HOT WATER SUPPLY TEMPERATURE AT SETPOINT.

1.2.2. THE HOT WATER SUPPLY TEMPERATURE RESETS INVERSELY

WITH THE OUTDOOR TEMPERATURE AS SCHEDULED: AT 30°F OA,

HWS TEMPERATURE AT 180°F, AT 70°F OA, HWS TEMPERATURE

AT 140°F.

1.2.3. STEAM HOT WATER CONVERTERS, 2-HTX-1 & 2-HTX-2, ARE 100%

REDUNDANT AND ONLY ONE UNIT AT A TIME SHALL OPERATE.

1.2.4. HOT WATER PUMPS ARE CONTROLLED BY THE DDC SYSTEM. THE

PUMPS ARE 100% REDUNDANT REQUIRING ONLY ONE PUMP AT A

TIME TO OPERATE.

1.3. WHEN THE OUTSIDE AIR TEMPERATURE RISES ABOVE THE SYSTEM

ENABLE SETPOINT OR THE SYSTEM IS "OFF", THE HEATING SHALL BE

DISABLED.

2. HEAT EXCHANGER CONTROL

2.1. THIS SYSTEM CONSISTS OF TWO STEAM HEAT EXCHANGERS WITH 1

3 -

3 STEAM VALVES. AFTER THE FLOW THROUGH THE HEAT

EXCHANGER HAS BEEN CONFIRMED VIA THE FLOW SWITCH (FS-X),

THE 24VAC POWER SHALL BE APPLIED TO THE STEAM VALVE

ACTUATORS. THE TWO STEAM INLET VALVES WILL MODULATE IN

SEQUENCE TO MAINTAIN THE DESIRED HOT WATER SUPPLY

TEMPERATURE TO SETPOINT AS RESET BY THE OUTDOOR AIR

TEMPERATURE.

3. HOT WATER PUMP CONTROL

3.1. WHEN ENABLED, A PUMP SHALL BE STARTED. IF THE PUMP STATUS

DOES NOT MATCH THE COMMAND, AN ALARM SHALL BE GENERATED

AND THE LAG PUMP SHALL BE STARTED. LEAD/LAG STATUS SHALL BE

SWITCHED WEEKLY TO EQUALIZE RUNTIME.

SEQUENCE OF OPERATION

1. START/STOP CONTROLS

1.1. THE HEATING SYSTEM SHALL AUTOMATICALLY START WHEN THE

OUTSIDE AIR TEMPERATURE FALLS BELOW THE SYSTEM ENABLE

SETPOINT.

1.2. WHEN THE SYSTEM IS "ON":

1.2.1. STEAM CONTROL VALVES SHALL MODULATE TO MAINTAIN THE

HOT WATER SUPPLY TEMPERATURE AT SETPOINT.

1.2.2. THE HOT WATER SUPPLY TEMPERATURE RESETS INVERSELY

WITH THE OUTDOOR TEMPERATURE AS SCHEDULED: AT 30°F OA,

HWS TEMPERATURE AT 180°F, AT 70°F OA, HWS TEMPERATURE

AT 140°F.

1.2.3. STEAM HOT WATER CONVERTERS, 2-HTX-3 & 2-HTX-4, ARE 100%

REDUNDANT AND ONLY ONE UNIT AT A TIME SHALL OPERATE.

1.2.4. HOT WATER PUMPS ARE CONTROLLED BY THE DDC SYSTEM. THE

PUMPS ARE 100% REDUNDANT REQUIRING ONLY ONE PUMP AT A

TIME TO OPERATE.

1.3. WHEN THE OUTSIDE AIR TEMPERATURE RISES ABOVE THE SYSTEM

ENABLE SETPOINT OR THE SYSTEM IS "OFF", THE HEATING SHALL BE

DISABLED.

2. HEAT EXCHANGER CONTROL

2.1. THIS SYSTEM CONSISTS OF TWO STEAM HEAT EXCHANGERS WITH 1

3 -

3 STEAM VALVES. AFTER THE FLOW THROUGH THE HEAT

EXCHANGER HAS BEEN CONFIRMED VIA THE FLOW SWITCH, THE

24VAC POWER SHALL BE APPLIED TO THE STEAM VALVE ACTUATORS.

THE TWO STEAM INLET VALVES WILL MODULATE IN SEQUENCE TO

MAINTAIN THE DESIRED HOT WATER SUPPLY TEMPERATURE TO

SETPOINT AS RESET BY THE OUTDOOR AIR TEMPERATURE.

3. HOT WATER PUMP CONTROL

3.1. WHEN ENABLED, A PUMP SHALL BE STARTED. IF THE PUMP STATUS

DOES NOT MATCH THE COMMAND, AN ALARM SHALL BE GENERATED

AND THE LAG PUMP SHALL BE STARTED. LEAD/LAG STATUS SHALL BE

SWITCHED WEEKLY TO EQUALIZE RUNTIME.

STR

STEAM CONV.

T

AI7

HWR

HWS

STEAM

SUPPLY

STEAM

SUPPLY

180 160 140

HOT WATER SETPOINT

(DEG F)

OUTDOOR

AIR

TEMPERATURE

(DEG F)

HEATING HOT WATER RESET

SCHEDULE

T

T

STEAM CONV.

2-HTX-3 VALVE 2

3 VALVE OUTPUT

2-HTX-3 VALVE 1

3 VALVE OUTPUT

2-HTX-4 VALVE 2

3 VALVE OUTPUT

2-HTX-4 VALVE 1

3 VALVE OUTPUT

AI6

DI1

DI2

DI3

DO1

DI4

DO2

STR

AMBIENT AIR

TEMPERATURE SENSOR

INSTALLED ON NORTH

SIDE OF BUILDING

FS

FS

AI2

AO2

AI1

AO1

AI3

AO3

AI4

AO4

SENSOR (TYP)

TEMPERATURE

AI5

CAMPUS STEAM

CONDENSATE

RETURN

CAMPUS STEAM

CONDENSATE

RETURN

FLOW SWITCH

(TYP)

AI2

AI1

AI3

AI4

AI6

AI7

AI5

STEAM CONVERTER (2-HTX-3) VALVE 2 STATUS

STEAM CONVERTER (2-HTX-4) VALVE 2 STATUS

STEAM CONVERTER (2-HTX-4) VALVE 1 STATUS

HOT WATER SUPPLY TEMPERATURE SENSOR

HOT WATER RETURN TEMPERATURE SENSOR

AMBIENT AIR TEMPERATURE SENSOR

STEAM CONVERTER (2-HTX-3) VALVE 1 STATUS

DI4

DI3

DI1

STEAM CONVERTER (2-HTX-4) FLOW SWITCH STATUS

HOT WATER PUMP (2-HWP9) STATUS

HOT WATER PUMP (2-HWP10) STATUS

STEAM CONVERTER (2-HTX-3) FLOW SWITCH STATUS

DI2

DO1

DO2

HOT WATER PUMP (2-HWP9) START/STOP

HOT WATER PUMP (2-HWP10) START/STOP

AO1

AO2

STEAM CONVERTER (2-HTX-3) VALVE 2 CONTROLLER

STEAM CONVERTER (2-HTX-3) VALVE 1 CONTROLLER

AO3

AO4

STEAM CONVERTER (2-HTX-4) VALVE 2 CONTROLLER

STEAM CONVERTER (2-HTX-4) VALVE 1 CONTROLLER

NOTES:

1. ALL CONTROL DEVICES ARE EXISTING DDC.

TEMPERATURE SENSORS, VALVE ACTUATORS, ETC. CAN

BE REUSED IF FUNCTIONAL AND COMPATIBLE.

2. CONTROLLERS ARE TO BE REPLACED.

3. SERVES NORTHSIDE OF BLDG 2, 2ND AND 3RD FLOOR

FCU'S AND INDUCTION UNITS.

STR

STEAM CONV.

T

AI7

HWR

HWS

STEAM

SUPPLY

STEAM

SUPPLY

180 160 140

HOT WATER SETPOINT

(DEG F)

OUTDOOR

AIR

TEMPERATURE

(DEG F)

HEATING HOT WATER RESET

SCHEDULE

T

T

STEAM CONV.

2-HTX-1 VALVE 2

3 VALVE OUTPUT

2-HTX-1 VALVE 1

3 VALVE OUTPUT

2-HTX-2 VALVE 2

3 VALVE OUTPUT

2-HTX-2 VALVE 1

3 VALVE OUTPUT

AI6

DI1

DI2

DI3

DO1

DI4

DO2

STR

AMBIENT AIR TEMPERATURE SENSOR

INSTALLED ON NORTH SIDE OF

BUILDING

FS

FS

AI2

AO2

AI1

AO1

AI3

AO3

AI4

AO4

SENSOR (TYP)

TEMPERATURE

AI5

CAMPUS STEAM

CONDENSATE

RETURN

CAMPUS STEAM

CONDENSATE

RETURN

AI2

AI1

AI3

AI4

AI6

AI7

AI5

STEAM CONVERTER (2-HTX-1) VALVE 2 STATUS

STEAM CONVERTER (2-HTX-2) VALVE 2 STATUS

STEAM CONVERTER (2-HTX-2) VALVE 1 STATUS

HOT WATER SUPPLY TEMPERATURE SENSOR

HOT WATER RETURN TEMPERATURE SENSOR

AMBIENT AIR TEMPERATURE SENSOR

STEAM CONVERTER (2-HTX-1) VALVE 1 STATUS

DI4

DI3

DI1

STEAM CONVERTER (2-HTX-2) FLOW SWITCH STATUS

HOT WATER PUMP (2-HWP7) STATUS

HOT WATER PUMP (2-HWP8) STATUS

STEAM CONVERTER (2-HTX-1) FLOW SWITCH STATUS

DI2

DO1

DO2

HOT WATER PUMP (2-HWP7) START/STOP

HOT WATER PUMP (2-HWP8) START/STOP

AO1

AO2

STEAM CONVERTER (2-HTX-1) VALVE 2 CONTROLLER

STEAM CONVERTER (2-HTX-1) VALVE 1 CONTROLLER

AO3

AO4

STEAM CONVERTER (2-HTX-2) VALVE 2 CONTROLLER

STEAM CONVERTER (2-HTX-2) VALVE 1 CONTROLLER

FLOW SWITCH

(TYP)

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

NORTH & SOUTH HEATING HOT

WATER SYSTEMS CONTROL

SCHEMATICS & SEQUENCES

2 WLP NMT

M2-203