50-M703.pdf

PATIENT

TOILET

EXAM/

TREATMENT

(ISOLATION)

ANTEROOM

WALL MOUNTED PRESSURE

MONITOR FOR ANTE ROOM,

ISOLATION ROOM AND CORRIDOR

MULTIPOINT ROOM PRESSURE MONITOR

ROOM TEMPERATURE SENSOR

HI

HI

LOW

LOW

ROOM

PRESSURE

MONITOR

(TYPICAL)

DIRECTION OF

AIRFLOW (TYPICAL)

SEQUENCE OF OPERATION - ISOLATION ROOM SUITE CONTROL

VAV TERMINAL UNIT WILL MAINTAIN A CONSTANT SUPPLY FLOW. ASSOCIATED ISOLATION ROOM EXHAUST AIR VALVE WILL MAINTAIN CONSTANT EXHAUST AIR FLOW. WHEN A LOW AIRFLOW CONDITION EXISTS ON A VAV TERMINAL UNIT, THE OPERATOR

WILL BE NOTIFIED OF A LOW FLOW STATUS CAUTION ALARM AT THE BAS.

SPACE/RETURN AIR TEMPERATURE SENSOR (ZN-T) MOUNTED IN THE EXHAUST DUCT WILL MODULATE REHEAT COIL CONTROL VALVE (RH) TO MAINTAIN SPACE AIR TEMPERATURE SETPOINT (72 DEG. F ADJ.). THE REHEAT DISCHARGE AIR TEMPERATURE (DA-T) WILL BE MONITORED. WHEN THE SPACE TEMPERATURE (ZN-T) IS NOT WITHIN ALARM LIMITS, THE OPERATOR WILL BE NOTIFIED AT

THE BAS.

SPACE PRESSURIZATION MONITORING:

SPACE DIFFERENTIAL PRESSURE SENSORS (DP) WILL MONITOR SPACE PRESSURE RELATIONSHIPS BETWEEN THE FOLLOWING

ROOMS:

1. ANTE-ROOM AND CORRIDOR

2. ANTE-ROOM AND ISOLATION ROOM.

THE SPACE PRESSURE WILL BE DISPLAYED/ALARMED ON THE ROOM MONITOR DISPLAYS AT THE ENTRY TO EACH SUITE (ANTE ROOM AND ISOLATION ROOM). DESIGN PRESSURE DIFFERENTIALS ARE -0.05" WG WITH PRESSURE GRADIENTS AS INDICATED IN THE FLOW DIAGRAMS. THE PRESSURE MONITOR WILL GENERATE LOCAL ALARM INDICATED BY A RED BACKGROUND DISPLAY AND ANNUNCIATED BY AN ALARM HORN WHENEVER THE PRESSURE DIFFERENTIAL FALLS T0 -0.03" WC FOR A PERIOD OF 30 SECONDS.

ONCE IN ALARM, THE LOCAL HORN MAY BE SILENCED AT THE DISPLAY. WHEN THE RELATIONSHIP RETURNS TO NORMAL, THE

DISPLAY WILL HAVE A GREEN BACKGROUND AND THE ALARM WILL AUTOMATICALLY SILENCE.

FAILURE MODES:

THE FOLLOWING FAILURE MODES CAUSE A FAN FAILURE ALARM. EACH ALARM GENERATES A UNIQUE ALARM MESSAGE AND NOTIFIES THE OPERATOR AT THE BAS. A UNIQUE ALARM WILL BE GENERATED AT THE BAS AND A LOCAL LED AND HORN OUTSIDE THE ISOLATION ROOM SUITES. THE FAN FAILURE ALARM MUST BE RESET AT THE BAS PRIOR TO MANUALLY RESTARTING THE

FAILED FAN.

1. HIGH EXHAUST SUCTION FAILURE: WHEN THE EXHAUST SUCTION PRESSURE (LSP-A) ON THE FAN SIDE OF THE EXHAUST FILTER HOUSING EXCEEDS THE SAFETY SETPOINT OF 6" WC THE EXHAUST FANS WILL SHUTDOWN. THIS

WILL CAUSE AN EXHAUST AIR SYSTEM FAILURE.

2. EXHAUST AIR SYSTEM FAILURE: WHEN THE EXHAUST AIR STATIC PRESSURE SENSOR (EAP-SP) DROPS BELOW 0.5"

(LOW EAP-SP).

3. ISOLATION DAMPER FAILURE: ISOLATION DAMPER IS NOT PROVEN OPEN THROUGH END SWITCH ID1-ES OR ID2-ES (NOT SHOWN) WITHIN 10 SECONDS OF BEING COMMANDED ON, AN ALARM IS SENT TO THE BAS. THE FAN IS VARIED TO

MAINTAIN THE DUCT STATIC SETPOINT.

4. EXHAUST FAN FAILURE: SHOULD EITHER DUTY FAN BE ENABLED AND STATUS NOT READ "ON" AFTER THE INITIAL 30 SECONDS, THE EXHAUST FAN IS SHUT DOWN AND ALARM IS SENT TO THE BAS. THE REMAINING FAN IS VARIED TO

MAINTAIN THE DUCT STATIC. (SEE EXHAUST FAN FAILURE SEQUENCE BELOW.

EXHAUST AIR SYSTEM FAILURE CONTROL:

UPON LOSS OF EXHAUST AIR AS DETERMINED BY THE EXHAUST AIR STATIC PRESSURE SENSOR DROPPING BELOW 0.5" (FIELD ADJUSTABLE). THE VAV TERMINAL UNIT IN SUPPLY AIR BRANCH DUCTWORK SERVING THE ISOLATIN ROOM WILL CLOSE. BUBBLE TIGHT DAMPERS IN EXHAUST AIR BRANCH DUCTWORK SERVING THE ISOLATION ROOM WILL CLOSE. ALARM WILL BE GENERATED AT BAS. UPON EXHAUST AIR RESTORATION, THE ISOLATION ROOM WILL REMAIN IN FAILURE MODE UNTIL MANUALLY RESET AT THE BAS. AFTER THE BAS RESET, THE BUBBLE TIGHT DAMPERS IN THE EXHAUST AIR BRANCH DUCTWORK WILL OPEN AND THE EXHAUST FANS MODULATE TO MAXIMUM SCHEDULED AIR FLOW. AFTER A 30 SECOND TIME DELAY (FIELD ADJUSTABLE), THE SUPPLY AIR BUBBLE TIGHT DAMPERS WILL OPEN AND SUPPLY FAN 'AC-V30' WILL START AND OPERATE IN ACCORDANCE WITH ITS SEQUENCE OF OPERATION. EXHAUST AIR SYSTEM FAILURE MODE WILL TAKE PRIORITY OVER SUPPLY AIR SYSTEM FAILURE MODE.

HILOW

EAVEAV

DP

VAVFROM AHU UNIT

T

AO

HWR

HWS

VAVFROM AHU UNIT

T

AO

VAVFROM AHU UNIT

T

AO

DP

DP

HWR

HWS

HWS

HWR

WALL MOUNTED TEMPERATURE

CONTROLS FOR ANTE ROOM AND

ISOLATION ROOMPATIENT

TOILET

EXAM/

TREATMENT

(ISOLATION)

SEQUENCE OF OPERATION - ISOLATION ROOM SUITE CONTROL

PROVIDE THE FOLLOWING:

1. ROOM THERMOSTAT WITH INTEGRAL TEMPERATURE SENSOR, INTEGRAL DISPLAY, SLIDING SCALE SETPOINT

ADJUSTMENT, AND REMOTE COMMUNICATION PORT.

2. THE ISOLATION ROOM SUITE CONSISTS OF ONE (1) VARIABLE VOLUME EXHAUST AIR VALVE, AND TWO (2) VAV AIR

TERMINAL UNITS WITH REHEAT COIL.

3. SUPPLY AIR SENSOR DOWNSTREAM OF THE SUPPLY TERMINAL REHEAT COILS FOR USE IN MONITORING OVERALL

TERMINAL UNIT PERFORMANCE.

4. THE ISOLATION ROOM SUITE SHALL BE SERVED BY ONE (1) HIGH PLUME DILUTION FAN.

5. ONE ROOM PRESSURE MONITOR SHALL SERVE THE ISOLATION ROOM AND ONE ROOM PRESSURE MONITOR SHALL

SERVE THE ANTE-ROOM.

6. CALCULATE TOTAL EXHAUST AIR VOLUME AND TOTAL SUPPLY AIR VOLUME FOR ISOLATI ROOM, ANTE-ROOM, AND

ISOLATION ROOM TOILETS TO MONITOR AND MAINTAIN A SCHEDULED AIRFLOW OFFSET.

7. OCCUPANCY SCHEDULE SHALL BE DETERMINED BY SCHEDULE OR OCCUPANCY SENSOR.

OCCUPIED MODE

1. THE CONTROLLER SHALL MAINTAIN OCCUPIED TEMPERATURE SETPOINTS 72°F (ADJ) AND MINIMUM VENTILATION

RATES. REFER TO SCHEDULE FOR MINIMUM OCCUPIED CFM SETPOINTS TO ESTABLISH MINIMUM VENTILATION RATES

DURING OCCUPIED MODE.

UNOCCUPIED MODE

1. THE CONTROLLER SHALL MAINTAIN UNOCCUPIED TEMPERATURE SETPOINTS 78°F (ADJ) AND MINIMUM VENTILATION

RATES. REFER TO SCHEDULE FOR MINIMUM UNOCCUPIED CFM SETPOINTS TO ESTABLISH MINIMUM VENTILATION

RATES DURING UNOCCUPIED MODE.

ROOM PRESSURIZATION CONTROL

1. THE CONTROLLER SHALL UTILIZE AN AIRFLOW SENSOR IN THE ROOM SUPPLY AIR TERMINAL TO CONTINUOUSLY

MEASURE THE ACTUAL ROOM SUPPLY AIR CFM.

2. THE CONTROLLER CALCULATES THE REQUIRED ROOM SUPPLY AIR CFM NECESSARY TO MAINTAIN THE PRE-

DETERMINED FLOW TRACKING DIFFERENTIAL AIRFLOW BY SUBTRACTING THE FLOW TRACKING DIFFERENTIAL CFM

SET POINT FROM THE TOTAL ROOM EXHAUST CFM.

3. THE CONTROLLER SHALL MODULATE THE ROOM SUPPLY AIR CFM TO ENSURE THAT THE FLOW TRACKING

DIFFERENTIAL CFM IS ALWAYS MAINTAINED.

ROOM TEMPERATURE CONTROL

1. WHEN THE ROOM AIRFLOWS ARE NOT CHANGING, THE CONTROLLER MAINTAINS THE ROOM AT THE AMBIENT

TEMPERATURE SET POINT BY MODULATING THE HEATING VALVE.

2. THE CONTROLLER SHALL CONTINUOUSLY CALCULATE THE ROOM COOLING LOAD AS A FUNCTION OF THE SUPPLY

AIRFLOW AND THE TEMPERATURE DIFFERENCE BETWEEN THE ROOM TEMPERATURE SENSOR AND THE SUPPLY AIR

TEMPERATURE SENSOR.

3. IF THE CALCULATED SUPPLY AIR TEMPERATURE IS OUTSIDE OF THE PRE-RESET SUPPLY AIR TEMPERATURE DISCHARGE LIMITS, THE SEQUENCE MAINTAINS THE SUPPLY DISCHARGE TEMPERATURE AT THE LIMIT AND INCREASES THE SUPPLY AIRFLOW TO HANDLE THE COOLING LOAD WHILE ALSO INCREASING THE ROOM GENERAL

EXHAUST AIRFLOW TO MAINTAIN ROOM PRESSURIZATION.

SETTINGS:

A DROP IN TEMPERATURE BELOW SET POINT SHALL CAUSE THE SUPPLY AIR TERMINAL UNIT TO DECREASE IN FLOW UNTIL ITS MINIMUM POSITION IS REACHED. ON A FURTHER DROP IN TEMPERATURE THE REHEAT VALVE WILL BE MODULATED OPEN. INITIAL TEMPERATURE SET POINT SHALL BE 73°F (ADJ). FAIL-SAFE CONDITIONS UNDER LOSS OF POWER ALL AIR

VALVES WILL FAIL TO THEIR LAST POSITION.

REFER TO ISOLATION ROOM

EXHAUST FANS (EF-2A & EF-2B)

DIAGRAM

RUN CONDITIONS - RUN CONDITIONS:

THE EXHAUST FANS (EF-2A + EF-2B) SHALL RUN CONTINUOUSLY. THE EXHAUST FAN ARE SIZED AT

100% CAPACITY (THE SECOND EXHAUST FAN IS FULLY REDUNDANT). THE EXHAUST FAN SHALL

OPERATE IN A LEAD / STANBY FASHION.

EXHAUST FAN:

THE EXHAUST FAN SHALL RUN WHEN COMMANDED ON. WHEN PLACED IN THE HAND POSITION

THE EXHAUST FAN SHALL RUN CONTINUOUSLY. WHEN PLACED IN AUTO POSITION THE

CONTROLLER SHALL CONTROL THE FAN OPERATION. THE CONTROLLER SHALL MEASURE THE

STATIC PRESSURE AND MODULATE THE EXHAUST FAN VFD SPEED TO MAINTAIN STATIC

PRESSURE SETPOINT. ALL SETPOINTS SHALL BE FIELD ADJUSTED DURING THE COMMISSIONING

PERIOD TO MEET THE REQUIREMENTS OF ACTUAL FIELD CONDITIONS. THE EXHAUST FAN VFD

SPEED SHALL NOT DROP BELOW 25% (ADJ.).

TWO POSITION ISOLATION DAMPER SHALL FULLY OPEN WHEN THE DESIGNATED EXHAUST FAN IS ACTIVATED. ISOLATION DAMPER SHALL FULLY CLOSE WHEN THE EXHAUST FAN IS DE-ACTIVATED.

WHEN THE EXHAUST FAN STATUS IS PROVEN ON, COMMAND THE ISOLATION DAMPER TO OPEN.

FAN STATUS:

THE CONTROLLER SHALL MONITOR THE FAN STATUS.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• FAN FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.

• FAN IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.

• FAN RUNTIME EXCEEDED: FAN STATUS RUNTIME EXCEEDS A USER DEFINABLE LIMIT

(ADJ.).

EXHAUST FAN SYSTEM ROTATION:

THE CONTROLLER SHALL AUTOMATICALLY ALTERNATE BETWEEN FANS ON A WEEKLY BASIS TO

EQUALIZE RUN TIME. UPON A SIGNAL FROM THE BAS TO ROTATE THE EXHAUST FANS THE

FOLLOWS SHALL OCCUR:

• START THE NEW LEAD EXHAUST FAN WHEN EXHAUST FAN IS AT MINIMUM SPEED

OPEN ISOLATION DAMPER.

• THE OLD LEAD EXHAUST FAN SHALL STAY ACTIVE AND RUN THE FAN DOWN TO 50%

(ADJ.). AS THE NEW LEAD EXHAUST FAN START TO RAMP UP AND THE OLD LEAD

EXHAUST FAN RAMPS DOWN TO MINIMUM SPEED THE OLD LEAD EXHAUST FAN

SHALL START CLOSING THE ISOLATION DAMPER ONCE THE END SWITCH INDICATES

THE DAMPER CLOSED, COMMAND THE OLD LEAD EXHAUST FAN TO DEACTIVATE.

• STOP THE OLD LEAD FAN AND DESIGNATE IT AS THE NEW STANDBY FAN.

• THE NEW LEAD FAN SHALL MAINTAIN STATIC PRESSURE SETPOINT.

EXHAUST FAN FAILURE:

IN THE EVENT ONE OF THE EXHAUST FANS FAIL, IMMEDIATELY START THE STANDBY EXHAUST

FAN. THE STANDBY FAN WILL REMAIN ON AND BE RE-DESIGNATED AS THE NEW PRIMARY FAN.

THE FAILED FAN SHALL MAINTAIN ITS ALARM CONDITION UNTIL A BAS RESET IS INITIATED TO

BRING THE FAILED FAN OUT OF ITS ALARM CONDITION.

PREFILTER SYSTEM:

THE CONTROLLER SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE PREFILTER.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• PREFILTER CHANGE REQUIRED: PREFILTER DIFFERENTIAL PRESSURE EXCEEDS A

USER DEFINABLE LIMIT (ADJ.)

HEPA FILTER SYSTEM:

THE CONTROLLER SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE HEPA FILTER.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• HEPA FILTER CHANGE REQUIRED: HEPA FILTER DIFFERENTIAL PRESSURE EXCEEDS

A USER DEFINABLE LIMIT (ADJ.)

ALARMS:

• PRE-FILTER DIFFERENTIAL STATIC PRESSURE EXCEEDS 1.0" W.G. (ADJ.)

• HEPA-FILTER DIFFERENTIAL STATIC PRESSURE EXCEEDS 2.0" W.G. (ADJ.)

BO - (FAN START/STOP)

AI - ISOLATION DAMPER STATUS

BI - (VFD FAULT)

AO - VFD SPEED CONTROL)

BI - (FAN STATUS)

A0 - ISOLATION AIR DAMPER

VFD VFD

M M

AI - ISOLATION AIR DAMPER STATUS

A0 - ISOLATION AIR DAMPER

BO - (FAN START/STOP)

BI - (VFD FAULT)

AO - VFD SPEED CONTROL)

BI - (FAN STATUS)'EF-2B''EF-2A'

EXHAUST

DISCHARGE

THROUGH

STACK

EXHAUST

DISCHARGE

THROUGH

STACK

HEPA

FILTER

PRE

FILTER

SPS-1

AI

DP

AI - FILTER STATUS

DP

AI - FILTER STATUS

NOTE TO TEMPERATURE CONTROL CONTRACTOR:

CONTROL CONTRACTOR SHALL BE RESPONSIBLE FOR

PROVIDING THE CORRECT TYPE, SIZES AND QUANTITIES OF

CONTROL CABLES, CONTROLLERS, SENSORS,

TRANSFORMERS, DEVICES AND PROGRAMMING

NECESSARY FOR A FULLY FUNCTIONAL SYSTEM.

BI - HIGH LEVEL ALARM

DECONTAMINATION BASIN

GRADE

(SEE PLUMBING DRAWINGS)

o n e e ig h th in c h o n e fo o t th re e in c h e s o n e fo o t o n e a n d o n e h a lf in c h e s o n e fo o t o n e in c h o n e fo o t th re e q u a rt e rs in c h o n e fo o t o n e h a lf in c h o n e fo o t th re e e ig h th s in c h o n e fo o t o n e q u a rt e r in c h o n e fo o t

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

A

B

C

D

E

F

A

B

C

D

E

F

Drawing Title Project Title

VA FORM 08-6231

Office of Facilities Management

U.S. Department of Veterans Affairs

STAMP

Date

Location

Building Number Checked Drawn Drawing Number

Project Number

BID SET

Approved: Director

Approved: Associate Director

Approved: Assistant Director

Approved: Assoc. Director for Patient Care Service/Nurse Executive

Approved: Deputy Assoc. Director of Patient Care Services

Approved: Chief of Staff

Approved: Deputy Chief of Staff

Approved: Chief of Engineering

Approved:

Approved:

ARCHITECT/ENGINEER/CONSULTANTS:

Bancroft Project No.

SAVAHCS, TUCSON, AZ 85723

3300 Dundee Road

Northbrook, IL 60062

T: 847.952.9362

04/30/2024MECHANICAL - CONTROLS EXPAND AND RENOVATE

EMERGENCY DEPARTMENT B50

50 DGG TE

50-M703

678-331

8-

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NOT TO SCALE

ISOLATION ROOM SUITE CONTROLS

NOT TO SCALE

ISOLATION ROOM EXHAUST FANS (EF-2A & EF-2B)

FAN RUNTIME EXCEEDED 2 X

FAN RUNTIME EXCEEDED 1 X

FAN IN HAND 2 X

FAN IN HAND 1 X

ISOLATION AIR DAMPER FAILURE 2 X

ISOLATION AIR DAMPER FAILURE 1 X

FAN FAILURE 2 X

FAN FAILURE 1 X

HEPA-FILTER CHANGE REQUIRED X X X X

PRE-FILTER CHANGE REQUIRED X X X X

SCHEDULE X

STATIC PRESSURE SETPOINT X X X

EXHAUST FAN START / STOP 2 X X X

EXHAUST FAN START / STOP 1 X X X

EXHAUST FAN VFD FAULT 2 X X

EXHAUST FAN VFD FAULT 1 X X

EXHAUST FAN STATUS 2 X X X

EXHAUST FAN STATUS 1 X X X

HEPA-FILTER STATUS X X

PRE-FILTER STATUS X X

DAMPER ACTUATOR X X

ISOLATION AIR DAMPER 2 X X X

ISOLATION AIR DAMPER 1 X X X

EXHAUST FAN VFD SPEED 2 X X X

EXHAUST FAN VFD SPEED 1 X X X

ISOLATION AIR DAMPER STATUS 2 X X

ISOLATION AIR DAMPER STATUS 1 X X

STATIC PRESSURE SENSOR, SPS-1 X X X

POINT NAME AI AO BI BO AV BV SCHED TREND ALARM SHOW ON GRAPHIC

HARDWARE POINTS SOFTWARE POINTS

EXHAUST FAN (EF-2A & EF-2B) POINTS LIST

HIGH LEVEL ALARM X X X

POINT NAME AI AO BI BO AV BV SCHED TREND ALARM SHOW ON GRAPHIC

HARDWARE POINTS SOFTWARE POINTS

DECONTAMINATION BASIN POINTS LIST

NOT TO SCALE

DECONTAMINATION BASIN CONTROLS

Revisions: Date:

BID SET 05/01/2023

ADDENDUM 1 04/30/2024