596A4-22-700 Drawing M-701 - Mechanical Controls.pdf

SPLIT SYSTEM AIR CONDITIONING UNITS (AC) & (ACCU):

SYSTEM SHALL BE UTILIZED TO PROVIDE TEMPERATURE CONTROL FOR THE TELECOMMUNICATION ROOMS (TR) AND

ELECTRICAL ROOMS (ER).

CONTROL OF THE SPLIT SYSTEM AIR CONDITIONING UNIT AND THE ASSOCIATED REMOTE AIR COOLED CONDENSING UNIT SHALL BE ACCOMPLISHED LOCALLY BY MANUFACTURER PROVIDED UNIT CONTROLLER. THE SPLIT SYSTEM MANUFACTURER SHALL PROVIDE ALL PROGRAMMING, CONTROLLERS, SENSORS, AND OTHER REQUIRED DEVICES

NECESSARY TO ACHIEVE THE SEQUENCE OF OPERATION AS FOLLOWS.

THE SPLIT SYSTEM CONTROLLER SHALL CYCLE THE OUTDOOR CONDENSING UNIT COMPRESSOR AND CONDENSER FAN TO MAINTAIN SPACE TEMPERATURE SETPOINT OF 72°F (ADJ). CONTROL THE INDOOR FAN IN EITHER LOW, MEDIUM, OR HIGH SPEEDS TO MAINTAIN SETPOINT AND MINIMIZE CYCLING OF THE CONDENSING UNIT.

THE BAS SHALL MONITOR THE NEW SPLIT SYSTEM ALARMS AND TRENDS.

PROVIDE A CONDENSATE PUMP.

PROVIDE A WALL MOUNTED SPACE TEMPERATURE/ HUMIDITY SENSOR FOR TRENDING SPACE TEMPERATURE, MONITORING AND ALARM PURPOSES. INSTALL ONLY (1) SENSOR PER ROOM, SENSOR TO CONTROL MULTIPLE AC

UNITS, IF APPLICABLE.

PROVIDE A BAS ALARM IF SPACE TEMPERATURE RISES ABOVE 85°F (ADJ).

SPLIT SYSTEM CONTROLS - SEQUENCE OF OPERATIONS

SPC-TT

WDS-AS

SPC-TTWALL-MOUNTED

TEMP SENSOR

WITH OVERRIDE

DATA CENTER (CRAC) - SEQUENCE OF OPERATIONS

SYSTEM DESCRIPTION

THE SYSTEM CONSISTS OF THREE COMPUTER ROOM TYPE UNIT WITH DX COOLING COIL, ELECTRIC REHEAT COIL, AND REMOTE AIR COOLED CONDENSING UNIT. INDIVIDUAL UNIT CONTROL SHALL BE PROVIDED BY THE INTERNAL STANDARD MANUFACTURERS TEMPERATURE CONTROLS. THE SYSTEM SHALL BE UNDER THE CONTROL OF THE BAS. THE PLANT IS CONFIGURED FOR N+1 REDUNDANCY, SUCH THAT ANY ONE CRAC UNIT COULD FAIL AND THE OTHER REMAINING UNITS COULD PROVIDE THE COOLING AND

HUMIDIFICATION CONTROL FOR THE COMPUTER ROOM A073.

IN NORMAL CONDITION OPERATION, ALL CRAC UNITS OPERATE CONCURRENTLY, AT THE LOWEST COLLECTIVE ENERGY USE LEVEL

POSSIBLE.

TEMPERATURE AND HUMIDITY MONITORING

THE SPACE TEMPERATURE AND HUMIDITY SHALL BE SENSED BY SPACE SENSORS. THE TEMPERATURE AND HUMIDITY READINGS SHALL BE REPORTED TO THE BAS. THE BAS SHALL BE ABLE TO ADJUST THE SPACE TEMPERATURE AND HUMIDITY SETTINGS.

RACK TEMPERATURE SENSOR MONITORING

A RACK INFRASTRUCTURE MANAGEMENT SYSTEM IS BEING INSTALLED WITH THE RACKS. THE BAS SHALL INTERFACE WITH THIS SYSTEM

(3) LOCATIONS - BOTTOM, MIDDLE, AND TOP) TO MONITOR THE AIR TEMPERATURES AT THE RACKS. AVERAGE RACK-FACE INLET TEMPERATURE SHALL BE DETERMINED AS THE AVERAGE OF THE 3-SENSOR TEMPERATURE MEASUREMENT. THE AVERAGE TEMPERATURE AT THE RACK INLET IS TO BE BETWEEN 72°F AND 80.6°F. ALARM THE BAS IF ANY OF THE AVERAGE RACK INLET

TEMPERATURES INDICATE TEMPERATURES ABOVE 80.6F (ADJ.).

DESIGN CONDITIONS AT THE RACKS SHALL MAINTAIN A 20°F ΔT BETWEEN THE SUPPLY AIR (COLD AISLE) AND THE RETURN AIR

TEMPERATURE AT THE WALL MOUNTED SPACE SENSOR.

THE CONTROL SYSTEM SHALL BE ABLE TO DETERMINE THE OPERATIONAL ΔT, MONITOR THE SUPPLY TEMPERATURES AT THE RACK ENCLOSURES, AND REGULATE THE FAN SPEED AND REFRIGERANT FLOW AT EACH INDIVIDUAL CRAC.

COOLING

THE ACTIVATION AND SEQUENCING OF COMPUTER ROOM AIR CONDITIONING UNITS (CRAC) SHALL BE PERFORMED BY THE BAS.

CONTROL OF EACH CRAC'S INTERNAL OPERATION SHALL BE ACCOMPLISHED LOCALLY AND SHALL BE RESIDENT IN EACH CRAC'S

CONTROL PANEL.

THE CRAC UNIT CONTROLLER SHALL OPERATE EACH CRAC IN TEAMWORK MODE WHICH ENABLES ALL THREE UNITS TO TURN ON AND OFF BASED ON HEAT LOAD AND DYNAMICALLY COORDINATES THE FAN SPEED UP/DOWN TO MEET THE COOLING DEMANDS. AS THE HEAT LOAD SHIFTS DOWN, THE CONTROL SHALL MEET THE NEEDS BY SLOWING THE FAN SPEED DOWN AND CASCADING UNITS BY PUTTING

THEM INTO STANDBY MODE.

IF AN OPERATING CRAC GOES INTO ALARM OR FAILS FOR ANY REASON, THE BAS SHALL IMMEDIATELY SHUT DOWN THE FAILED UNIT, CLOSE THE ASSOCIATED ISOLATION DAMPER, AND SPEED THE FANS UP TO FULL SPEED IN THE TWO CRACS THAT ARE STILL IN OPERATION. PROVIDE FLOAT SWITCH IN CRAC UNIT DRAIN PAN TO CUT POWER TO CRAC UNIT IF DRAIN PAN IS ABOUT TO OVERFLOW.

SWITCH TO CUT POWER TO CRAC UNIT AND ALARM THE BAS.

HUMIDITY CONTROL

THE MANUFACTURER TEMPERATURE CONTROLS SHALL CONTROL THE HUMIDIFICATION CYCLE. ON A CALL FOR HUMIDITY, THE CRAC UNITS WILL ENABLE THE HUMIDIFIERS. ON A CALL FOR DEHUMIDIFICATION, THE UNIT TO OPERATE CONTINUOUSLY IN FULL COOLING WHILE IN DEHUMIDIFICATION MODE, WITH THE ELECTRIC REHEAT MAINTAINING SPACE TEMPERATURES

SMOKE DETECTION

WHEN SMOKE IS DETECTED BY THE SMOKE DETECTOR, THE FANS SHALL BE DE-ENERGIZED AND AN ALARM SENT TO THE BAS AND FIRE

ALARM SYSTEM.

FILTER

MONITOR FILTER PRESSURE DROP. ALARM THE BAS WHEN THE PRESSURE DROP EXCEEDS 0.5" WC (ADJ.)

UNDERFLOOR WATER SENSORS

24 VAC POWERED SOLID STATE SINGLE POLE – DOUBLE THROW CONTACTS THAT CLOSES UPON THE SENSOR’S DETECTION OF WATER AT THE BOTTOM OF PAN, FLOOR ETC. SENSOR DESIGNED TO BE PLACED AT THE BOTTOM OF THE PAN, FLOOR ETC. WHERE IT WILL DETECT MOISTURE. SENSOR DESIGN SHALL INCORPORATE WATER SENSOR ARRAY INSIDE A HYDROPHILIC PAD DESIGNED TO ABSORB AND ALARM WITH ONLY A SMALL AMOUNT OF WATER. CONTACT RATING 4A AT 24 VAC MAXIMUM AND 100 MA AT 5 VDC MINIMUM.

MISCELLANEOUS

BAS TO PROVIDE A DRY CONTACT TO MONITOR THE EPO SWITCH POSITION THAT SHALL SHUT DOWN THE CRAC UNITS WHEN IT IS

ACTIVATED.

RACK-T SPC-HH

TOP

(TYP 4 AT RACKS)

UF-WS (TYP 8)

S U

P P

L Y

A

IR

S T

A R

T E

R

ELEC - HC

CRAC-SS

DP-FLT

EHC-SS

DX

FLTR-CRAC-PD

D P

R S

R L

CONDENSING

UNIT

S D

SMOKE DETECTOR

FURNISHED BY UNIT

MANUFACTURER AND

INSTALLED BY DIV. 26

CRAC-ALM

DP-WS

CU-SS

DATA CENTER - CONTROLS DIAGRAM

R E

T U

R N

A

IR

CRAC UNIT

S U

P P

L Y

A

IR

S T

A R

T E

R

ELEC - HC

CRAC-SS

DP-FLT

EHC-SS

DX

FLTR-CRAC-PD

D P

R S

R L

CONDENSING

UNIT

S D

CRAC-ALM

DP-WS

CU-SS

R E

T U

R N

A

IR

CRAC UNIT

S U

P P

L Y

A

IR

S T

A R

T E

R

ELEC - HC

CRAC-SS

DP-FLT

EHC-SS

DX

FLTR-CRAC-PD

D P

R S

R L

CONDENSING

UNIT

S D

CRAC-ALM

DP-WS

CU-SS

R E

T U

R N

A

IR

CRAC UNIT

RACK TEMP

SENSORS AT (3)

LOCATIONS

MIDDLE

BOTTOM

RACK SENSORS

PROVIDED BY DIV. 23

SMOKE DETECTOR

FURNISHED BY UNIT

MANUFACTURER AND

INSTALLED BY DIV. 26

SMOKE DETECTOR

FURNISHED BY UNIT

MANUFACTURER AND

INSTALLED BY DIV. 26

EA

EXHAUST FAN

EF-X-S

EF-X-DP

EF-X-SS

EF-X-D

EXHAUST FAN (EF-X) SEQUENCE OF OPERATION

SYSTEM DESCRIPTION

THE SYSTEM CONSISTS OF A CONSTANT VOLUME EXHAUST FAN AND AN SMOKE

DAMPER (SEE DAMPER SOO).

EXHAUST FAN

START/STOP: UPON RECEIVING A SIGNAL TO START, AFTER A TIME DELAY TO

ALLOW ALL THE ISOLATION, FIRE/SMOKE AND SMOKE DAMPERS TO OPEN, THE

CLEAN AGENT SYSTEM SHALL START THE SUPPLY FAN.

THE FAN SHALL RUN CONTINUOUSLY.

INSTALL A CURRENT STATUS SWITCH TO PROVE SUPPLY FAN OPERATION. SEND

AN ALARM TO THE OPERATOR'S WORKSTATION UPON FAN FAILURE.

SMOKE DAMPER

PRIOR TO ENABLING EXHAUST FAN, SMOKE DAMPER SHALL OPEN, ONCE PROVEN

OPEN, FAN SHALL BE ENABLED.

WHEN FAN IS DISABLED, AFTER A TIME DELAY TO ALLOW FOR FAN TO RAMP

DOWN, SMOKE DAMPER SHALL CLOSE.

NO

EXHAUST FAN (EF-X) CONTROLS DIAGRAM

EF-X-PS

PS

SMOKE PARTITION

SMOKE DAMPER (N.O.)

PRESSURE SWITCH HIGH TO SHUT

DOWN FAN UPON REACHING HIGH

PRESSURE SETPOINT

DAMPER POSITION

FEEDBACK TO BAS

2 POSITION

BINARY POINT

120V

ELECTRICAL

POWER

TO CLEAN AGENT

SYSTEM

AIRFLOW

AIR

DUCT

SD

AD

DUCT TRANSITION

AS REQUIRED

PSH

ZS M

DAMPER REQUIREMENTS:

A MOTORIZED DAMPER SHALL BE PROVIDED WITH RELAY IF NECESSARY. INTERLINK DAMPER TO A

CONTROL MODULE WITHIN THE CLEAN AGENT PANEL. CLOSE DAMPER UPON THE CLEAN AGENT

SYSTEM ACTIVATION. DAMPER IS NORMALLY OPEN. DISPLAY DAMPER ON FRONT-END GRAPHIC AND

PROVIDE TRENDS.

SMOKE DAMPER (SD) - SEQUENCE OF OPERATIONS

SMOKE DAMPER (SD) - CONTROLS DIAGRAM

Project Number

Building Number

Drawing Number

DrawnCheckedIssue Date

Location

Project TitlePhaseDrawing Title

Approved: Project Director

ARCHITECT OF RECORDCONSULTANT

Revisions: Date:

U.S. Department of Veterans Affairs

Construction and Facilities Management

8718 Botts Lane Phone: (210) 816-4784

San Antonio, Texas 78217 Fax: (210) 881-6808 www.hfscompany.com jbianco@hfscompany.com

FULLY SPRINKLERED

569A4-22-700100% CONSTRUCTION

DOCUMENTS

LEXINGTON-COOPER EHRM

INFRASTRUCTURE DESIGN

1101 VETERANS DRIVE

LEXINGTON, KY 40502

21 3 4 5 6 7 8 9 10

21 3 4 5 6 7 8 9 10

B

A

C

D

E

F

B

A

C

D

E

F

St. Louis

6 South Old Orchard St. Louis, MO 63119 t: +1 800.404.7677 e: hello@introba.com www.introba.com

1 & 1A

M-701

CL

MECHANICAL CONTROLS

SS5/16/23

EXISTING BAS REQUIREMENT:

1. MODIFICATIONS TO THE OWNER'S EXISTING METASYS CONTROLS

SYSTEM AND OPERATOR'S GRAPHIC INTERFACE SHALL BE

INCLUDED AS PART OF THIS CONTRACT. THE REMOVAL OR

MODIFYING OF ANY EXISTING EQUIPMENT WITHIN THE SCOPE OF

THIS PROJECT SHALL BE ADJUSTED. SEE SPECIFICATION 230923

FOR FURTHER CONTROLS SYSTEM INFORMATION.

GENERAL BAS CONTROL NOTE

ELECTRICAL PANEL REQUIREMENT:

1. BAS TO MONITOR ELECTRIC METERS FOR EACH PANELBOARD

SERVING THE TR ROOMS. TOTAL KILOWATT HOURS OF EACH PANEL

TO BE SENT TO THE BAS FOR MONITORING AND REPORTING

PURPOSES.

2. METERS SHALL COMMUNICATE TO EXISTING BUILDING TRIDIUM

SYSTEM. PROVIDE THE REQUIRED COMMUNICATION DEVICES AND

PROGRAMING TO COMMUNICATE DATA TO THE TRIDIUM SYSTEM.

3. PROVIDE A BACNET NETWORK ALLOWING COMMUNICATION FROM

THE METERS’ DATA HEADS TO THE SITE DATA AGGREGATION

DEVICE.

4. PROVIDE DATA HEADS AT EACH METER, CONVERTING ANALOG AND

PULSED INFORMATION TO DIGITAL INFORMATION.

5. THE GRAPHICAL METER SCREEN AT THE BAS SHALL PROVIDE REAL

TIME REPORTING.

6. REFER TO SPEC 251010 FOR ADDITIONAL REQUIREMENTS,

METERING POINTS AND REPORTS.

ELECTRIC METERING NOTE

WATER DETECTOR/ SENSOR REQUIREMENTS:

A DRAIN PAN SHALL BE PROVIDED FOR ALL EXISTING TO REMAIN WET PIPING IN TELECOMMUNICATION ROOMS AND ELECTRICAL ROOMS. PROVIDE A SMALL CONDENSATE PUMP AND WATER DETECTOR SENSOR IN EACH DRAIN PAN

NEAR THE DRAIN OUTLET.

ACTIVATE THE PUMP UPON DETECTION OF WATER.

THE SENSOR SHALL ALARM THE BAS IF STAGNANT WATER OCCURS IN THE PAN.

WATER SENSOR ALARMS AND TRENDS TO BE MONITORED BY THE BAS. SEND AN ALARM TO OPERATOR'S GRAPHIC

INTERFACE WHEN ACTIVATED. RECORD ALARM TRENDS FOR MAINTENANCE REQUIREMENTS.

PROVIDE LOCALIZED AUDIBLE ALARM.

WATER SENSOR CONTROLS - SEQUENCE OF OPERATIONS

DATA CENTER - CONTROL POINTS LIST

CONTROL POINT TAG SYSTEM POINT DESCRIPTION

INPUTS OUTPUTS SOFTWARE ALARM REPORTS

NOTESDI AI DO AO AV BV I

N

T E

G R

A T

E D

H

IG

H \L

O W

L

IM

IT

S A

F E

T Y

M A

IN

T

E N

A N

C E

A B

N O

R M

A L O

N /O

F F

O P

E N

/C L

O S

E

A L A

R M

R U

N T

IM

E

T O

T A

L

IZ

A T

IO

N

T R

E N

D

CRAC-ALM CRAC ALARM ● ● ●

CRAC-SS CRAC START/STOP ● ●

CU-SS CONDENSING UNIT START/STOP ●

DP-FLT DRAIN PAN FLOAT ● ● ● ● ●

DP-WS DRAIN PAN WATER SENSOR ● ●

EHC-SS ELECTRIC HEATING COIL START/STOP ●

FLTR-CRAC-PD CRAC FILTER PRESSURE DROP ● ● ● ●

RACK-T RACK TEMPERATURE ● ● ●

SPC-H SPACE HUMIDITY ● ● ●

SPC-T SPACE TEMPERATURE ● ● ●

UF-WS UNDERFLOOR WATER SENSOR ● ● ●

SPLIT SYSTEM - CONTROL POINTS LIST

CONTROL POINT TAG SYSTEM POINT DESCRIPTION

INPUTS OUTPUTS SOFTWARE ALARM REPORTS

NOTESDI AI DO AO AV BV I

N

T E

G R

A T

E D

H

IG

H \L

O W

L

IM

IT

S A

F E

T Y

M A

IN

T

E N

A N

C E

A B

N O

R M

A L O

N /O

F F

O P

E N

/C L

O

A

R M

R U

N T

IM

E

T O

T A

L

IZ

A T

IO

N

T R

E N

D

SPC-T SPACE TEMPERATURE ● ● ●

WDS-A WATER DETECTOR SENSOR ALARM ● ● ●

EXHAUST FAN (EF-X) POINTS LIST

CONTROL

POINT TAG SYSTEM POINT DESCRIPTION

INPUTS OUTPUTS SOFTWARE ALARM REPORTS

NOTESDI AI DO AO AV BV I

N

T E

G R

A T

E D

H

IG

H \L

O W

L

IM

IT

S A

F E

T Y

M A

IN

T

E N

A N

C E

A B

N O

R M

A L O

N /O

F F

O P

E N

/C L

O

A

R M

R U

N T

IM

E

T O

T A

L

IZ

A T

IO

N

T R

E N

D

EF-X-D EXHAUST AIR DAMPER OPEN/CLOSE ●

EF-X-DP EXHAUST AIR DAMPER POSITION ● ● ● ●

EF-X-PS EXHAUST AIR PRESSURE SENSOR ● ● ●

EF-X-S EXHAUST FAN STATUS ● ● ● ●

EF-X-SS EXHAUST FAN START/STOP ●

1 ESI-001 (PRE-BID #47) 1/8/2024