PART 6 ATTACHMENT L_ELECTRICAL MECHANICAL DRAWINGS.pdf

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111A

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2246 Yaupon Drive

Wilmington, NC 28401

Phone: 910.791.4000

Fax: 910.791.5266 www.cbhfengineers.com

NC# P-0506

c

Copyright 2020 CBHF Engineers, PLLC

Engineers, PLLC

DISCLOSURE OF INFORMATION:

CONTRACTOR SHALL COMPLY AS FOLLOWS:

A. THE CONTRACTOR SHALL NOT RELEASE TO ANYONE OUTSIDE THE CONTRACTOR'S ORGANIZATION ANY UNCLASSIFIED INFORMATION, REGARDLESS OF MEDIUM (E.G. FILM, TAPE, DOCUMENT), PERTAINING TO ANY PART OF THIS CONTRACT

OR ANY PROGRAM RELATED TO THIS CONTRACT, UNLESS-

1. THE CONTRACTING OFFICER HAS GIVEN PRIOR WRITTEN APPROVAL; OR

2. THE INFORMATION IS OTHERWISE IN THE PUBLIC DOMAIN BEFORE THE DATE OF THE RELEASE.

B. REQUESTS FOR APPROVAL SHALL IDENTIFY THE SPECIFIC INFORMATION TO BE RELEASED, THE MEDIUM TO BE USED, AND THE PURPOSE FOR THE RELEASE. THE CONTRACTOR SHALL SUBMIT ITS REQUEST TO THE CONTRACTING

OFFICER AT LEAST 45 DAYS BEFORE THE PROPOSED DATE FOR RELEASE.

C. THE CONTRACTOR AGREES TO INCLUDE A SIMILAR REQUIREMENT IN EACH SUBCONTRACT UNDER THIS CONTRACT.

SUBCONTRACTORS SHALL SUBMIT REQUESTS FOR AUTHORIZATION TO RELEASE THROUGH THE PRIME CONTRACTOR

TO THE CONTRACTING OFFICER.

THE RFP-DOCUMENTS (RFPD), INCLUDING BUT NOT LIMITED TO: THE DRAWINGS, PLANS, DESIGNS, REPORTS, SURVEYS, CALCULATIONS, COMPUTER PRINT-OUTS, ETC. ARE MADE AVAILABLE TO THE CONTRACTOR'S FOR REFERENCE PURPOSES ONLY IN RELATION TO THIS DESIGN-BID PROJECT. THE RFPD ARE THE PROPERTY OF THE GOVERNMENT.

THE RFPD ARE PROVIDED "AS-IS" WITHOUT ANY GUARANTEE, REPRESENTATION, CONDITION, OR WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, OR STATUTORY.

THE GOVERNMENT ASSUMES NO LIABILITY WITH RESPECT TO ANY RELIANCE THE CONTRACTOR(S) PLACE ON THESE RFPD. IF THE CONTRACTOR(S) RELY ON THESE RFPD IN ANY WAY, THE CONTRACTOR(S) ASSUME THE ENTIRE RISK AS TO THE TRUTH, ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION CONTAINED IN THESE RFPD.

1" = 20'-0" 0 20 401 BUILDING 115 SITE PLAN - POWER

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EXISTING PAD MOUNTED TRANSFORMER

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DESCRIPTIONSYMBOL

ELECTRICAL LEGEND

AutoCAD SHX Text

SYM

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DATE

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APPROVED

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REVISIONS

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SATISFACTORY TO: DATE

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APPROVED: PWO OR OICC DATE

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DESIGN DIR.

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SUBMITTED BY:

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DR.

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CHK.

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DES.

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CAMP LEJEUNE, NORTH CAROLINA

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CONST. CONTR.

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MARINE CORPS BASE

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DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND

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SCALE:

AutoCAD SHX Text E1

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SIZE

AutoCAD SHX Text 80091

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SPEC.

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CODE IDENT. NO

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NAVFAC DRAWING NO.

AutoCAD SHX Text

SHEET OF

AutoCAD SHX Text 18168

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MULTIPURPOSE AND GYMNASIUM

AutoCAD SHX Text

RENOVATIONS 115 & 201

AutoCAD SHX Text 20-0046

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NA

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NOTED

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PRELIMINARY

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T H BURTON, PE

AutoCAD SHX Text E-101

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BOQ BLDG 115 SITE POWER PLAN

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JPF

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HGH

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JPF

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BLDG

EXISTING PAD MOUNTED

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SHP210A

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McHUGH BOULEVARD

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2246 Yaupon Drive

Wilmington, NC 28401

Phone: 910.791.4000

Fax: 910.791.5266 www.cbhfengineers.com

NC# P-0506

c

Copyright 2020 CBHF Engineers, PLLC

Engineers, PLLC

DISCLOSURE OF INFORMATION:

CONTRACTOR SHALL COMPLY AS FOLLOWS:

A. THE CONTRACTOR SHALL NOT RELEASE TO ANYONE OUTSIDE THE CONTRACTOR'S ORGANIZATION ANY UNCLASSIFIED INFORMATION, REGARDLESS OF MEDIUM (E.G. FILM, TAPE, DOCUMENT), PERTAINING TO ANY PART OF THIS CONTRACT

OR ANY PROGRAM RELATED TO THIS CONTRACT, UNLESS-

1. THE CONTRACTING OFFICER HAS GIVEN PRIOR WRITTEN APPROVAL; OR

2. THE INFORMATION IS OTHERWISE IN THE PUBLIC DOMAIN BEFORE THE DATE OF THE RELEASE.

B. REQUESTS FOR APPROVAL SHALL IDENTIFY THE SPECIFIC INFORMATION TO BE RELEASED, THE MEDIUM TO BE USED, AND THE PURPOSE FOR THE RELEASE. THE CONTRACTOR SHALL SUBMIT ITS REQUEST TO THE CONTRACTING

OFFICER AT LEAST 45 DAYS BEFORE THE PROPOSED DATE FOR RELEASE.

C. THE CONTRACTOR AGREES TO INCLUDE A SIMILAR REQUIREMENT IN EACH SUBCONTRACT UNDER THIS CONTRACT.

SUBCONTRACTORS SHALL SUBMIT REQUESTS FOR AUTHORIZATION TO RELEASE THROUGH THE PRIME CONTRACTOR

TO THE CONTRACTING OFFICER.

THE RFP-DOCUMENTS (RFPD), INCLUDING BUT NOT LIMITED TO: THE DRAWINGS, PLANS, DESIGNS, REPORTS, SURVEYS, CALCULATIONS, COMPUTER PRINT-OUTS, ETC. ARE MADE AVAILABLE TO THE CONTRACTOR'S FOR REFERENCE PURPOSES ONLY IN RELATION TO THIS DESIGN-BID PROJECT. THE RFPD ARE THE PROPERTY OF THE GOVERNMENT.

THE RFPD ARE PROVIDED "AS-IS" WITHOUT ANY GUARANTEE, REPRESENTATION, CONDITION, OR WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, OR STATUTORY.

THE GOVERNMENT ASSUMES NO LIABILITY WITH RESPECT TO ANY RELIANCE THE CONTRACTOR(S) PLACE ON THESE RFPD. IF THE CONTRACTOR(S) RELY ON THESE RFPD IN ANY WAY, THE CONTRACTOR(S) ASSUME THE ENTIRE RISK AS TO THE TRUTH, ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION CONTAINED IN THESE RFPD.

1" = 20'-0" 0 20 401 BUILDING 201 SITE PLAN - POWER

PLAN

NORTH

EXISTING MANHOLE MH #-#

EXISTING PAD MOUNTED TRANSFORMER

EXISTING POWER POLE

DESCRIPTIONSYMBOL

ELECTRICAL LEGEND

AutoCAD SHX Text

SYM

AutoCAD SHX Text

DATE

AutoCAD SHX Text

APPROVED

AutoCAD SHX Text

REVISIONS

AutoCAD SHX Text

SATISFACTORY TO: DATE

AutoCAD SHX Text

APPROVED: PWO OR OICC DATE

AutoCAD SHX Text

DESIGN DIR.

AutoCAD SHX Text

SUBMITTED BY:

AutoCAD SHX Text

DR.

AutoCAD SHX Text

CHK.

AutoCAD SHX Text

DES.

AutoCAD SHX Text

CAMP LEJEUNE, NORTH CAROLINA

AutoCAD SHX Text

CONST. CONTR.

AutoCAD SHX Text

MARINE CORPS BASE

AutoCAD SHX Text

DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND

AutoCAD SHX Text

SCALE:

AutoCAD SHX Text E1

AutoCAD SHX Text

SIZE

AutoCAD SHX Text 80091

AutoCAD SHX Text

SPEC.

AutoCAD SHX Text

CODE IDENT. NO

AutoCAD SHX Text

NAVFAC DRAWING NO.

AutoCAD SHX Text

SHEET OF

AutoCAD SHX Text 18168

AutoCAD SHX Text

MULTIPURPOSE AND GYMNASIUM

AutoCAD SHX Text

RENOVATIONS 115 & 201

AutoCAD SHX Text 20-0046

AutoCAD SHX Text

NA

AutoCAD SHX Text

NOTED

AutoCAD SHX Text

PRELIMINARY

AutoCAD SHX Text

T H BURTON, PE

AutoCAD SHX Text E-102

AutoCAD SHX Text

BOQ BLDG 201 SITE POWER PLAN

AutoCAD SHX Text

AutoCAD SHX Text

JPF

AutoCAD SHX Text

HGH

AutoCAD SHX Text

JPF

PROGRESS

DRAWING - DO NOT

USE FOR

CONSTRUCTION

2246 Yaupon Drive

Wilmington, NC 28401

Phone: 910.791.4000

Fax: 910.791.5266 www.cbhfengineers.com

NC# P-0506

c

Copyright 2020 CBHF Engineers, PLLC

Engineers, PLLC

DISCLOSURE OF INFORMATION:

CONTRACTOR SHALL COMPLY AS FOLLOWS:

A. THE CONTRACTOR SHALL NOT RELEASE TO ANYONE OUTSIDE THE CONTRACTOR'S ORGANIZATION ANY UNCLASSIFIED INFORMATION, REGARDLESS OF MEDIUM (E.G. FILM, TAPE, DOCUMENT), PERTAINING TO ANY PART OF THIS CONTRACT

OR ANY PROGRAM RELATED TO THIS CONTRACT, UNLESS-

1. THE CONTRACTING OFFICER HAS GIVEN PRIOR WRITTEN APPROVAL; OR

2. THE INFORMATION IS OTHERWISE IN THE PUBLIC DOMAIN BEFORE THE DATE OF THE RELEASE.

B. REQUESTS FOR APPROVAL SHALL IDENTIFY THE SPECIFIC INFORMATION TO BE RELEASED, THE MEDIUM TO BE USED, AND THE PURPOSE FOR THE RELEASE. THE CONTRACTOR SHALL SUBMIT ITS REQUEST TO THE CONTRACTING

OFFICER AT LEAST 45 DAYS BEFORE THE PROPOSED DATE FOR RELEASE.

C. THE CONTRACTOR AGREES TO INCLUDE A SIMILAR REQUIREMENT IN EACH SUBCONTRACT UNDER THIS CONTRACT.

SUBCONTRACTORS SHALL SUBMIT REQUESTS FOR AUTHORIZATION TO RELEASE THROUGH THE PRIME CONTRACTOR

TO THE CONTRACTING OFFICER.

THE RFP-DOCUMENTS (RFPD), INCLUDING BUT NOT LIMITED TO: THE DRAWINGS, PLANS, DESIGNS, REPORTS, SURVEYS, CALCULATIONS, COMPUTER PRINT-OUTS, ETC. ARE MADE AVAILABLE TO THE CONTRACTOR'S FOR REFERENCE PURPOSES ONLY IN RELATION TO THIS DESIGN-BID PROJECT. THE RFPD ARE THE PROPERTY OF THE GOVERNMENT.

THE RFPD ARE PROVIDED "AS-IS" WITHOUT ANY GUARANTEE, REPRESENTATION, CONDITION, OR WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, OR STATUTORY.

THE GOVERNMENT ASSUMES NO LIABILITY WITH RESPECT TO ANY RELIANCE THE CONTRACTOR(S) PLACE ON THESE RFPD. IF THE CONTRACTOR(S) RELY ON THESE RFPD IN ANY WAY, THE CONTRACTOR(S) ASSUME THE ENTIRE RISK AS TO THE TRUTH, ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION CONTAINED IN THESE RFPD.

NOT TO SCALE1 CONTROL DIAGRAM - VAV AHU

TH

OA

BI - FREEZESTAT

M

M

AO - RETURN AIR DAMPER AI - MIXED AIR TEMP

AI - RETURN AIR TEMP

RA

AI - RETURN AIR HUMIDITY

T

AI - SUPPLY AIR TEMP

BI - HIGH STATIC SHUTDOWN

M

CT

VFD

BO - SUPPLY FAN START/STOP

BI - SUPPLY FAN STATUS

AO - SUPPLY FAN VFD SPEED

BI - SUPPLY FAN VFD FAULT

AO - COOLING VALVE

CHWS

CHWR

LOCATE 3/4" DISTANCE

DOWN LONGEST DUCT

H

L

AI - SUPPLY AIR STATIC PRESSURE

SA

M

T T

SF

N.O.

CHW

H L

BUILDING AUTOMATION SYSTEM INTERFACE:

THE BUILDING AUTOMATION SYSTEM (BAS) SHALL SEND THE CONTROLLER OCCUPIED BYPASS, PRE-COOL, OCCUPIED/UNOCCUPIED AND HEAT/COOL MODES. THE BAS SHALL ALSO SEND THE DISCHARGE AIR TEMPERATURE SETPOINT AND THE DUCT STATIC PRESSURE SETPOINT. IF COMMUNICATION IS LOST WITH THE BAS THE

CONTROLLER SHALL OPERATE USING DEFAULT MODES AND SETPOINTS.

EMERGENCY SHUTDOWN:

THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING AN EMERGENCY SHUTDOWN SIGNAL.

EMERGENCY SHUTDOWN TO BE A HARDWIRE INTERLOCK.

OCCUPIED:

DURING OCCUPIED PERIODS, THE SUPPLY FAN SHALL RUN CONTINUOUSLY AND THE OUTSIDE AIR DAMPER SHALL OPEN TO MAINTAIN MINIMUM VENTILATION REQUIREMENTS. THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. IF THE DISCHARGE AIR TEMPERATURE SENSOR FAILS THE CHILLED WATER VALVE SHALL CLOSE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

UNOCCUPIED:

WHEN THE SPACE TEMPERATURE IS ABOVE THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED AND THE CHILLED WATER VALVE SHALL OPEN. WHEN THE SPACE TEMPERATURE FALLS BELOW THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG.

F (ADJ.) MINUS THE UNOCCUPIED DIFFERENTIAL OF 4.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP, THE CHILLED

WATER VALVE SHALL CLOSE.

OPTIMAL START:

THE BAS SHALL MONITOR THE SCHEDULED OCCUPIED TIME, OCCUPIED SPACE SETPOINTS AND SPACE

TEMPERATURE TO CALCULATE WHEN THE OPTIMAL START OCCURS.

PRE-COOL MODE:

DURING OPTIMAL START, IF THE AVERAGE SPACE TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT, PRE-COOL MODE SHALL BE ACTIVATED. WHEN PRE-COOL IS INITIATED THE UNIT SHALL ENABLE THE FAN AND COOLING. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE SPACE TEMPERATURE REACHES OCCUPIED COOLING SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE OCCUPIED MODE.

OPTIMAL STOP:

THE BAS SHALL MONITOR THE SCHEDULED UNOCCUPIED TIME, OCCUPIED SETPOINTS AND SPACE TEMPERATURE TO CALCULATE WHEN THE OPTIMAL STOP OCCURS. WHEN THE OPTIMAL STOP MODE IS ACTIVE THE UNIT CONTROLLER SHALL MAINTAIN THE SPACE TEMPERATURE TO THE SPACE TEMPERATURE OFFSET SETPOINT.

OUTSIDE AIR DAMPER SHALL REMAIN ENABLED TO PROVIDE MINIMUM VENTILATION.

OCCUPIED BYPASS:

THE BAS SHALL MONITOR THE STATUS OF THE “ON” AND “CANCEL” BUTTONS OF THE SPACE TEMPERATURE SENSORS. WHEN AN OCCUPIED BYPASS REQUEST IS RECEIVED FROM A SPACE SENSOR, THE UNIT SHALL TRANSITION FROM ITS CURRENT OCCUPANCY MODE TO OCCUPIED BYPASS MODE AND THE UNIT SHALL MAINTAIN

THE SPACE TEMPERATURE TO THE OCCUPIED SETPOINTS (ADJ.).

HUMIDITY CONTROL:

IF THE SPACE RELATIVE HUMIDITY IS GREATER THAN 60% (ADJ.), THE CHILLED WATER SETPOINT SHALL BE RESET

3.0 DEG. F (ADJ.) LOWER. THE VAV BOXES WILL CONTROL TO MAINTAIN THE ZONE TEMPERATURE SETPOINT. MODE SHALL TERMINATE AFTER (2) TWO HOURS, MINIMUM OR WHEN THE SPACE RELATIVE HUMIDITY FALLS BELOW THE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) MINUS 3% (ADJ.). IF THE SPACE RELATIVE HUMIDITY SENSOR FAILS THE DEHUMIDIFICATION SEQUENCE SHALL BE TERMINATED AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

VENTILATION:

WHEN IN THE OCCUPIED MODE, THE OUTDOOR-AIR DAMPER SHALL MODULATE OPEN.

SUPPLY FAN:

THE FAN SHALL BE OFF IN THE UNOCCUPIED MODE. WHEN THE UNIT CONTROLLER IS IN THE OCCUPIED MODE, THE SUPPLY FAN SHALL OPERATE CONTINUOUSLY AND ITS SPEED SHALL BE MODULATED TO MAINTAIN THE DUCT STATIC PRESSURE SETPOINT. THE DUCT STATIC PRESSURE SETPOINT SHALL BE SENT BY THE BAS AND IS RESET BETWEEN THE MINIMUM AND MAXIMUM STATIC PRESSURE LIMITS TO MAINTAIN THE CRITICAL ZONE VAV AIR

DAMPER IN A POSITION BETWEEN 65% AND 75% OPEN.

IF THE SUPPLY FAN FAILS TO PROVE STATUS FOR 30 SECONDS (ADJ.), THE FAN SHALL BE COMMANDED OFF, THE OUTSIDE AIR DAMPER SHALL CLOSE, CHILLED WATER VALVE SHALL CLOSE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. A MANUAL RESET SHALL BE REQUIRED TO RESTART THE FAN. A HARDWIRED, HIGH STATIC PRESSURE CUT-OFF SWITCH SHALL BE ELECTRICALLY INTERLOCKED WITH THE VARIABLE SPEED DRIVE. IF THE HIGH STATIC PRESSURE CUT-OFF SWITCH IS TRIPPED THE FAN SHALL STOP, THE OUTSIDE AIR DAMPER SHALL CLOSE, CHILLED WATER VALVE SHALL CLOSE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. A MANUAL RESET OF THE HIGH STATIC PRESSURE CUT-OFF SWITCH SHALL BE REQUIRED TO RESTART THE FAN.

FILTER STATUS:

A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FILTER WHEN THE FAN IS RUNNING. IF THE SWITCH CLOSES DURING NORMAL OPERATION A DIRTY FILTER ALARM SHALL BE

ANNUNCIATED AT THE BAS.

SEQUENCE OF OPERATION - VAV AHU

BUILDING AUTOMATION SYSTEM INTERFACE:

THE BUILDING AUTOMATION SYSTEM (BAS) SHALL SEND THE CONTROLLER OCCUPIED BYPASS, MORNING WARM-UP/PRE-COOL, OCCUPIED/UNOCCUPIED AND HEAT/COOL MODES. IF A BAS COMMUNICATION IS LOST, THE

CONTROLLER SHALL OPERATE USING DEFAULT MODES AND SETPOINTS.

EMERGENCY SHUTDOWN:

THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING AN EMERGENCY SHUTDOWN SIGNAL.

EMERGENCY SHUTDOWN TO BE A HARDWIRE INTERLOCK.

OCCUPIED:

DURING OCCUPIED PERIODS, THE SUPPLY FAN SHALL RUN CONTINUOUSLY AND THE OUTSIDE AIR DAMPER SHALL OPEN. THE CHILLED WATER AND HOT WATER VALVES SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. THE DISCHARGE AIR TEMPERATURE SETPOINT SHALL BE DYNAMICALLY RESET BASED ON THE DEVIATION OF ACTUAL RETURN AIR TEMPERATURE FROM THE ACTIVE RETURN AIR TEMPERATURE SETPOINT. IF THE DISCHARGE AIR TEMPERATURE SENSOR FAILS THE CHILLED WATER AND HOT WATER VALVES SHALL MODULATE TO MAINTAIN THE ACTIVE RETURN AIR TEMPERATURE SETPOINT AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. IF THE DISCHARGE AIR TEMPERATURE SENSOR AND THE RETURN AIR TEMPERATURE SENSOR FAIL THE CHILLED WATER AND HOT WATER VALVES SHALL CLOSE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. ADJUSTMENT TO THE ZONE TEMPERATURE SETPOINT MUST REFERENCE THE RETURN

AIR SETPOINT AND ADJUST ACCORDINGLY.

UNOCCUPIED:

WHEN THE SPACE TEMPERATURE IS BELOW THE UNOCCUPIED HEATING SETPOINT OF 60.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED AND THE HOT WATER VALVE SHALL OPEN. WHEN THE SPACE TEMPERATURE RISES ABOVE THE UNOCCUPIED HEATING SETPOINT OF 60.0 DEG. F (ADJ.) PLUS THE UNOCCUPIED DIFFERENTIAL OF 4.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP AND THE HOT

WATER VALVE SHALL CLOSE.

WHEN THE SPACE TEMPERATURE IS ABOVE THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE CHILLED WATER VALVE SHALL OPEN. WHEN THE SPACE TEMPERATURE FALLS BELOW THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) MINUS THE UNOCCUPIED DIFFERENTIAL OF 4.0

DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP, THE CHILLED WATER VALVE SHALL CLOSE.

OPTIMAL START:

THE BAS SHALL MONITOR THE SCHEDULED OCCUPIED TIME, OCCUPIED RETURN AIR SETPOINTS AND RETURN AIR

TEMPERATURE TO CALCULATE WHEN THE OPTIMAL START OCCURS.

MORNING WARM-UP MODE:

DURING OPTIMAL START, IF THE RETURN AIR TEMPERATURE IS BELOW THE OCCUPIED HEATING SETPOINT A MORNING WARM-UP MODE SHALL BE ACTIVATED. WHEN MORNING WARM-UP IS INITIATED THE UNIT SHALL ENABLE THE HEATING AND SUPPLY FAN. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE RETURN AIR TEMPERATURE REACHES THE OCCUPIED HEATING SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE

OCCUPIED MODE.

PRE-COOL MODE:

DURING OPTIMAL START, IF THE RETURN AIR TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT, PRE-COOL MODE SHALL BE ACTIVATED. WHEN PRE-COOL IS INITIATED THE UNIT SHALL ENABLE THE FAN AND COOLING. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE RETURN AIR TEMPERATURE REACHES OCCUPIED COOLING SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE OCCUPIED MODE.

OPTIMAL STOP:

THE BAS SHALL MONITOR THE SCHEDULED UNOCCUPIED TIME, OCCUPIED SETPOINTS AND SPACE TEMPERATURE TO CALCULATE WHEN THE OPTIMAL STOP OCCURS. WHEN THE OPTIMAL STOP MODE IS ACTIVE THE UNIT CONTROLLER SHALL MAINTAIN THE RETURN AIR TEMPERATURE TO THE RETURN AIR TEMPERATURE OFFSET

SETPOINT. OUTSIDE AIR DAMPER SHALL REMAIN ENABLED TO PROVIDE VENTILATION.

OCCUPIED BYPASS:

THE BAS SHALL MONITOR THE STATUS OF THE “ON” AND “CANCEL” BUTTONS OF THE RETURN AIR TEMPERATURE SENSOR. WHEN AN OCCUPIED BYPASS REQUEST IS RECEIVED FROM A RETURN AIR SENSOR, THE UNIT SHALL TRANSITION FROM ITS CURRENT OCCUPANCY MODE TO OCCUPIED BYPASS MODE AND THE UNIT SHALL MAINTAIN

THE RETURN AIR TEMPERATURE TO THE OCCUPIED SETPOINTS (ADJ.).

HEAT/COOL MODE:

WHEN THE RETURN AIR TEMPERATURE RISES ABOVE THE OCCUPIED COOLING SETPOINT THE MODE SHALL TRANSITION TO COOLING. WHEN THE RETURN AIR TEMPERATURE FALLS BELOW THE OCCUPIED HEATING SETPOINT THE MODE SHALL TRANSITION TO HEATING. WHEN THE RETURN AIR TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT OR BELOW THE OCCUPIED HEATING SETPOINT THE MODE SHALL REMAIN IN ITS LAST STATE. IF THE RETURN AIR TEMPERATURE SENSOR FAILS THE MODE SHALL REMAIN IN ITS LAST STATE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. IF THE LOCAL AND COMMUNICATED SETPOINTS FAIL THE CONTROLLER SHALL DISABLE THE SUPPLY FAN AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

COOLING: THE SETPOINT SHALL BE 55°F (ADJ.).

HEATING: THE SETPOINT SHALL BE 90°F (ADJ.) WHENEVER THE RETURN AIR TEMPERATURE DROPS BELOW 68°F

(ADJ.).

OCCUPIED HUMIDITY CONTROL:

IF THE RETURN AIR RELATIVE HUMIDITY IS GREATER THAN 55% (ADJ.), THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN RETURN AIR RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) AND THE REHEAT VALVE SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. MODE SHALL TERMINATE WHEN THE RETURN AIR RELATIVE HUMIDITY FALLS BELOW THE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) MINUS 3% (ADJ.).

IF THE RETURN AIR RELATIVE HUMIDITY SENSOR FAILS THE DEHUMIDIFICATION SEQUENCE SHALL BE TERMINATED

AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

UNOCCUPIED HUMIDITY CONTROL:

IF THE SPACE RELATIVE HUMIDITY IS GREATER THAN 55% (ADJ.), THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN SPACE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) AND THE REHEAT VALVE SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. MODE SHALL TERMINATE WHEN THE SPACE RELATIVE HUMIDITY FALLS BELOW THE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) MINUS 3% (ADJ.). IF THE SPACE RELATIVE HUMIDITY SENSOR FAILS THE DEHUMIDIFICATION SEQUENCE SHALL BE TERMINATED AND AN ALARM

SHALL BE ANNUNCIATED AT THE BAS.

OCCUPIED VENTILATION:

THE OUTSIDE AIR DAMPER SHALL MODULATE OPEN TO SCHEDULED AIRFLOW.

SUPPLY FAN:

THE SUPPLY FAN SHALL BE ENABLED WHILE IN THE OCCUPIED MODE AND CYCLED ON DURING THE UNOCCUPIED MODE. THE UNIT CONTROLLER SHALL VARY THE SUPPLY FAN SPEED TO OPTIMIZE MINIMUM FAN SPEED IN ALL COOLING AND HEATING MODES. A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FAN. IF THE SWITCH DOES NOT OPEN WITHIN 40 SECONDS AFTER A REQUEST FOR FAN OPERATION A FAN FAILURE ALARM SHALL BE ANNUNCIATED, THE UNIT SHALL STOP, REQUIRING A MANUAL RESET.

FREEZE PROTECTION:

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% (ADJUST PER CLIMATE) 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.

FILTER STATUS:

A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FILTER WHEN THE FAN IS RUNNING. IF THE SWITCH CLOSES DURING NORMAL OPERATION A DIRTY FILTER ALARM SHALL BE

ANNUNCIATED AT THE BAS.

SEQUENCE OF OPERATIONS - SINGLE ZONE VAV

NOT TO SCALE3 CONTROL DIAGRAM - ELECTRIC METER

H L

OA

BI - FREEZESTAT

M

MAO - RETURN AIR DAMPER

AI - MIXED AIR TEMP

RA

T

AI - SUPPLY AIR TEMP

M

CT

VFD

BO - SUPPLY FAN START/STOP

BI - SUPPLY FAN STATUS

AO - SUPPLY FAN VFD SPEED

BI - SUPPLY FAN VFD FAULT

HWS

HWR

AO - HEATING VALVEAO - COOLING VALVE

CHWS

CHWR

AI - FILTER DIFFERENTIAL

PRESSURE

SA

MM

T T

SF

N.O.

N.C.

CHW HW

H L

AI - FILTER DIFFERENTIAL PRESSURE

H AI - ZONE TEMP/HUMIDITY

AI - ZONE TEMP SETPOINT ADJUST

BI - ZONE OVERRIDE

T

BI - ATFP

EMERGENCY

SHUT DOWNE

BI - ATFP

EMERGENCY

SHUT DOWNE

TH

AI - RETURN AIR TEMP

AI - RETURN AIR HUMIDITY

AO - OUTSIDE AIR DAMPER

CO2

AI - ZONE CARBON DIOXIDE PPM

AO - OUTSIDE AIR DAMPER

ELECTRIC METER:

THE CONTROLLER SHALL MONITOR THE ELECTRIC METER FOR ELECTRIC CONSUMPTION ON A CONTINUAL BASIS.

THESE VALUES SHALL BE MADE AVAILABLE TO THE SYSTEM AT ALL TIMES.

ALARM SHALL BE GENERATED AS FOLLOWS:

• METER FAILURE: SENSOR READING INDICATES A LOSS OF PULSE OUTPUT FROM THE ELECTRIC METER.

PEAK DEMAND HISTORY:

THE CONTROLLER SHALL MONITOR AND RECORD THE PEAK (HIGH AND LOW) DEMAND READINGS FROM THE ELECTRIC METER. PEAK READINGS SHALL BE RECORDED ON A DAILY, MONTH-TO-DATE, AND YEAR-TO-DATE BASIS.

USAGE HISTORY:

THE CONTROLLER SHALL MONITOR AND RECORD ELECTRIC METER READINGS SO AS TO PROVIDE A POWER CONSUMPTION HISTORY. USAGE READINGS SHALL BE RECORDED ON A DAILY, MONTH-TO-DATE, AND YEAR-TO-DATE

BASIS.

DEMAND LEVELS:

THE CONTROLLER SHALL SET THE SYSTEM DEMAND LEVEL (ADJ.) BASED ON THE CURRENT POWER CONSUMPTION READINGS FROM THE ELECTRIC METER. THERE SHALL BE SIX DAILY TIME PERIODS IN WHICH THE DEMAND SHALL BE ADJUSTED ON THREE LEVELS. THESE DEMAND LEVELS SHALL BE AVAILABLE FOR FACILITY EQUIPMENT TO UTILIZE

FOR DEMAND LIMITING.

• DEMAND LEVEL 1: POWER CONSUMPTION HAS EXCEEDED THE FIRST DEMAND LEVEL THRESHOLD (ADJ.).

• DEMAND LEVEL 2: POWER CONSUMPTION HAS EXCEEDED THE SECOND DEMAND LEVEL THRESHOLD (ADJ.).

• DEMAND LEVEL 3: POWER CONSUMPTION HAS EXCEEDED THE THIRD DEMAND LEVEL THRESHOLD (ADJ.).

SEQUENCE OF OPERATION - ELECTRIC METER

ELECTRIC METER POINTS

HARDWARE POINTS SOFTWARE POINTS

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

KW PULSE X X

CURRENT DEMAND LEVEL X X X

KW DEMAND X X

KW PEAK MONTH-TO-DATE X X

KW PEAK TODAY X X

KW PEAK YEAR-TO-DATE X X

KWH TODAY X X

MWH MONTH-TO-DATE X X

MWH YEAR-TO-DATE X X

DEMAND LEVEL 1 X

DEMAND LEVEL 2 X

DEMAND LEVEL 3 X

METER FAILURE X

AI - KW PULSE

POINTS LIST - SINGLE ZONE VAV

HARDWARE POINTS SOFTWARE POINTS

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

FILTER DIFFERENTIAL PRESSURE X X

MIXED AIR TEMP X X X

RETURN AIR HUMIDITY X X X

RETURN AIR TEMP X X X

ZONE AIR HUMIDITY X X X

ZONE AIR TEMP X X X

SUPPLY AIR TEMP X X X

ZONE CARBON DIOXIDE PPM X X X

ZONE TEMP X X X

ZONE SETPOINT ADJUST X X

COOLING VALVE X X X

HEATING VALVE X X X

RETURN AIR DAMPER X X X

OUTSIDE AIR DAMPER X X X

SUPPLY FAN VFD SPEED X X X

FREEZESTAT X X X X

SUPPLY FAN STATUS X X X

SUPPLY FAN VFD FAULT X X X

ZONE OVERRIDE X X X

SUPPLY FAN START/STOP X X X

ZONE CARBON DIOXIDE PPM

SETPOINT X X X

DEHUMIDIFICATION SETPOINT X X X

MIXED AIR TEMP SETPOINT X X X

SUPPLY AIR TEMP SETPOINT X X X

EMERGENCY SHUTDOWN X X X X

FILTER CHANGE REQUIRED X X

HIGH MIXED AIR TEMP X

HIGH RETURN AIR HUMIDITY X

HIGH RETURN AIR TEMP X

HIGH SUPPLY AIR STATIC PRESSURE X

HIGH SUPPLY AIR TEMP X

HIGH ZONE TEMP X

HIGH ZONE CO2 CONCENTRATION X

LOW MIXED AIR TEMP X

LOW RETURN AIR HUMIDITY X

LOW RETURN AIR TEMP X

LOW SUPPLY AIR STATIC PRESSURE X

LOW SUPPLY AIR TEMP X

LOW ZONE TEMP X

SUPPLY FAN FAILURE X

SUPPLY FAN IN HAND X

SUPPLY FAN RUNTIME EXCEEDED X

POINTS LIST - VAV AHU

HARDWARE POINTS SOFTWARE POINTS

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

GRAPHIC

FILTER DIFFERENTIAL PRESSURE X X

MIXED AIR TEMP X X X

RETURN AIR HUMIDITY X X X

RETURN AIR TEMP X X X

SUPPLY AIR STATIC PRESSURE X X X X

SUPPLY AIR TEMP X X X

COOLING VALVE X X X

SUPPLY FAN VFD SPEED X X X

FREEZESTAT X X X X

HIGH STATIC SHUTDOWN X X X X

SUPPLY FAN STATUS X X X

SUPPLY FAN VFD FAULT X X X

OUTSIDE AIR DAMPER X X X

RETURN AIR DAMPER X X X

SUPPLY FAN START/STOP X X X

SUPPLY AIR STATIC PRESSURE

SETPOINT X X X

SUPPLY AIR TEMP SETPOINT X X X

EMERGENCY SHUTDOWN X X X X

HIGH MIXED AIR TEMP X

HIGH RETURN AIR HUMIDITY X

HIGH RETURN AIR TEMP X

HIGH SUPPLY AIR STATIC PRESSURE X

HIGH SUPPLY AIR TEMP X

HIGH SUPPLY AIR TEMP X

LOW MIXED AIR TEMP X

LOW RETURN AIR HUMIDITY X

LOW RETURN AIR TEMP X

LOW SUPPLY AIR STATIC PRESSURE X

LOW SUPPLY AIR TEMP X

LOW SUPPLY AIR TEMP X

OUTSIDE AIR DAMPER FAILURE X

OUTSIDE AIR DAMPER IN HAND X

RETURN AIR DAMPER FAILURE X

RETURN AIR DAMPER IN HAND X

SUPPLY FAN FAILURE X

SUPPLY FAN IN HAND X

SUPPLY FAN RUNTIME EXCEEDED X

NOT TO SCALE2 CONTROL DIAGRAM - SINGLE ZONE VAV

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SYM

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DATE

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APPROVED

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REVISIONS

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SATISFACTORY TO: DATE

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APPROVED: PWO OR OICC DATE

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DESIGN DIR.

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SUBMITTED BY:

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DR.

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CHK.

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DES.

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CAMP LEJEUNE, NORTH CAROLINA

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CONST. CONTR.

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MARINE CORPS BASE

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DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND

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SCALE:

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SIZE

AutoCAD SHX Text 80091

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SPEC.

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CODE IDENT. NO

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NAVFAC DRAWING NO.

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SHEET OF

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MULTIPURPOSE AND GYMNASIUM

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RENOVATIONS 115 & 201

AutoCAD SHX Text 20-0046

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NA

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NOTED

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PRELIMINARY

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T H BURTON, PE

AutoCAD SHX Text M-601

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MECHANICAL

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CONTROLS

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GRM

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GRM

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DMH

USE FOR

CONSTRUCTION

2246 Yaupon Drive

Wilmington, NC 28401

Phone: 910.791.4000

Fax: 910.791.5266 www.cbhfengineers.com

NC# P-0506

c

Copyright 2020 CBHF Engineers, PLLC

Engineers, PLLC

DISCLOSURE OF INFORMATION:

CONTRACTOR SHALL COMPLY AS FOLLOWS:

A. THE CONTRACTOR SHALL NOT RELEASE TO ANYONE OUTSIDE THE CONTRACTOR'S ORGANIZATION ANY UNCLASSIFIED INFORMATION, REGARDLESS OF MEDIUM (E.G. FILM, TAPE, DOCUMENT), PERTAINING TO ANY PART OF THIS CONTRACT

OR ANY PROGRAM RELATED TO THIS CONTRACT, UNLESS-

1. THE CONTRACTING OFFICER HAS GIVEN PRIOR WRITTEN APPROVAL; OR

2. THE INFORMATION IS OTHERWISE IN THE PUBLIC DOMAIN BEFORE THE DATE OF THE RELEASE.

B. REQUESTS FOR APPROVAL SHALL IDENTIFY THE SPECIFIC INFORMATION TO BE RELEASED, THE MEDIUM TO BE USED, AND THE PURPOSE FOR THE RELEASE. THE CONTRACTOR SHALL SUBMIT ITS REQUEST TO THE CONTRACTING

OFFICER AT LEAST 45 DAYS BEFORE THE PROPOSED DATE FOR RELEASE.

C. THE CONTRACTOR AGREES TO INCLUDE A SIMILAR REQUIREMENT IN EACH SUBCONTRACT UNDER THIS CONTRACT.

SUBCONTRACTORS SHALL SUBMIT REQUESTS FOR AUTHORIZATION TO RELEASE THROUGH THE PRIME CONTRACTOR

TO THE CONTRACTING OFFICER.

THE RFP-DOCUMENTS (RFPD), INCLUDING BUT NOT LIMITED TO: THE DRAWINGS, PLANS, DESIGNS, REPORTS, SURVEYS, CALCULATIONS, COMPUTER PRINT-OUTS, ETC. ARE MADE AVAILABLE TO THE CONTRACTOR'S FOR REFERENCE PURPOSES ONLY IN RELATION TO THIS DESIGN-BID PROJECT. THE RFPD ARE THE PROPERTY OF THE GOVERNMENT.

THE RFPD ARE PROVIDED "AS-IS" WITHOUT ANY GUARANTEE, REPRESENTATION, CONDITION, OR WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, OR STATUTORY.

THE GOVERNMENT ASSUMES NO LIABILITY WITH RESPECT TO ANY RELIANCE THE CONTRACTOR(S) PLACE ON THESE RFPD. IF THE CONTRACTOR(S) RELY ON THESE RFPD IN ANY WAY, THE CONTRACTOR(S) ASSUME THE ENTIRE RISK AS TO THE TRUTH, ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION CONTAINED IN THESE RFPD.

BUILDING AUTOMATION SYSTEM INTERFACE:

THE BUILDING AUTOMATION SYSTEM (BAS) SHALL SEND THE CONTROLLER OCCUPIED BYPASS, MORNING WARM-UP/PRE-COOL, OCCUPIED/UNOCCUPIED AND HEAT/COOL MODES. IF A BAS COMMUNICATION IS LOST WITH

THE BAS, THE CONTROLLER SHALL OPERATE USING DEFAULT MODES AND SETPOINTS.

EMERGENCY SHUTDOWN:

THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING AN EMERGENCY SHUTDOWN SIGNAL.

EMERGENCY SHUTDOWN TO BE A HARDWIRE INTERLOCK.

OCCUPIED:

DURING OCCUPIED PERIODS, THE SUPPLY FAN SHALL RUN CONTINUOUSLY AND THE OUTSIDE AIR DAMPER SHALL OPEN TO MAINTAIN MINIMUM VENTILATION REQUIREMENTS. THE CHILLED WATER AND HOT WATER VALVES SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. THE DISCHARGE AIR TEMPERATURE SETPOINT SHALL BE DYNAMICALLY RESET BASED ON THE DEVIATION OF ACTUAL RETURN AIR TEMPERATURE FROM THE ACTIVE RETURN AIR TEMPERATURE SETPOINT. IF THE DISCHARGE AIR TEMPERATURE SENSOR FAILS, THE CHILLED WATER AND HOT WATER VALVES SHALL MODULATE TO MAINTAIN THE ACTIVE RETURN AIR TEMPERATURE SETPOINT AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. IF THE DISCHARGE AIR TEMPERATURE SENSOR AND THE RETURN AIR TEMPERATURE SENSOR FAIL THE CHILLED WATER AND HOT WATER VALVES SHALL CLOSE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. ADJUSTMENT TO THE ZONE TEMPERATURE SETPOINT MUST REFERENCE THE RETURN AIR SETPOINT AND ADJUST ACCORDINGLY.

UNOCCUPIED:

WHEN THE SPACE TEMPERATURE IS BELOW THE UNOCCUPIED HEATING SETPOINT OF 60.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED AND THE HOT WATER VALVE SHALL OPEN. WHEN THE SPACE TEMPERATURE RISES ABOVE THE UNOCCUPIED HEATING SETPOINT OF 60.0 DEG. F (ADJ.) PLUS THE UNOCCUPIED DIFFERENTIAL OF 4.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP AND THE HOT

WATER VALVE SHALL CLOSE.

WHEN THE SPACE TEMPERATURE IS ABOVE THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE CHILLED WATER VALVE SHALL OPEN. WHEN THE SPACE TEMPERATURE FALLS BELOW THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) MINUS THE UNOCCUPIED DIFFERENTIAL OF 4.0

DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP, THE CHILLED WATER VALVE SHALL CLOSE.

OPTIMAL START:

THE BAS SHALL MONITOR THE SCHEDULED OCCUPIED TIME, OCCUPIED SPACE SETPOINTS AND SPACE

TEMPERATURE TO CALCULATE WHEN THE OPTIMAL START OCCURS.

MORNING WARM-UP MODE:

DURING OPTIMAL START, IF THE RETURN AIR TEMPERATURE IS BELOW THE OCCUPIED HEATING SETPOINT A MORNING WARM-UP MODE SHALL BE ACTIVATED. WHEN MORNING WARM-UP IS INITIATED THE UNIT SHALL ENABLE THE HEATING AND SUPPLY FAN. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE RETURN AIR TEMPERATURE REACHES THE OCCUPIED HEATING SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE

OCCUPIED MODE.

PRE-COOL MODE:

DURING OPTIMAL START, IF THE RETURN AIR TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT, PRE-COOL MODE SHALL BE ACTIVATED. WHEN PRE-COOL IS INITIATED THE UNIT SHALL ENABLE THE FAN AND COOLING. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED. WHEN THE RETURN AIR TEMPERATURE REACHES OCCUPIED COOLING SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE OCCUPIED MODE.

OPTIMAL STOP:

THE BAS SHALL MONITOR THE SCHEDULED UNOCCUPIED TIME, OCCUPIED SETPOINTS AND RETURN AIR TEMPERATURE TO CALCULATE WHEN THE OPTIMAL STOP OCCURS. WHEN THE OPTIMAL STOP MODE IS ACTIVE THE UNIT CONTROLLER SHALL MAINTAIN THE RETURN AIR TEMPERATURE TO THE RETURN AIR TEMPERATURE

OFFSET SETPOINT. OUTSIDE AIR DAMPER SHALL REMAIN ENABLED TO PROVIDE VENTILATION.

OCCUPIED BYPASS:

THE BAS SHALL MONITOR THE STATUS OF THE “ON” AND “CANCEL” BUTTONS OF THE RETURN AIR TEMPERATURE SENSOR. WHEN AN OCCUPIED BYPASS REQUEST IS RECEIVED FROM A RETURN AIR SENSOR, THE UNIT SHALL TRANSITION FROM ITS CURRENT OCCUPANCY MODE TO OCCUPIED BYPASS MODE AND THE UNIT SHALL MAINTAIN

THE RETURN AIR TEMPERATURE TO THE OCCUPIED SETPOINTS (ADJ.).

HEAT/COOL MODE:

WHEN THE RETURN AIR TEMPERATURE RISES ABOVE THE OCCUPIED COOLING SETPOINT THE MODE SHALL TRANSITION TO COOLING. WHEN THE RETURN AIR TEMPERATURE FALLS BELOW THE OCCUPIED HEATING SETPOINT THE MODE SHALL TRANSITION TO HEATING. WHEN THE RETURN AIR TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT OR BELOW THE OCCUPIED HEATING SETPOINT THE MODE SHALL REMAIN IN ITS LAST STATE. IF THE RETURN AIR TEMPERATURE SENSOR FAILS THE MODE SHALL REMAIN IN ITS LAST STATE AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS. IF THE LOCAL AND COMMUNICATED SETPOINTS FAIL THE CONTROLLER SHALL DISABLE THE SUPPLY FAN AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

SUPPLY AIR TEMPERATURE SETPOINT - FIXED:

THE CONTROLLER SHALL MONITOR THE SUPPLY AIR TEMPERATURE AND SHALL MAINTAIN FIXED SUPPLY AIR

TEMPERATURE SETPOINTS AS FOLLOWS:

COOLING: THE SETPOINT SHALL BE 55°F (ADJ.).

HEATING: THE SETPOINT SHALL BE 90°F (ADJ.) WHENEVER THE RETURN AIR TEMPERATURE DROPS BELOW 68°F

(ADJ.).

OCCUPIED HUMIDITY CONTROL:

IF THE RETURN AIR RELATIVE HUMIDITY IS GREATER THAN 55% (ADJ.), THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN RETURN AIR RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) AND THE REHEAT VALVE SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. MODE SHALL TERMINATE WHEN THE RETURN AIR RELATIVE HUMIDITY FALLS BELOW THE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) MINUS 3% (ADJ.).

IF THE RETURN AIR RELATIVE HUMIDITY SENSOR FAILS THE DEHUMIDIFICATION SEQUENCE SHALL BE TERMINATED

AND AN ALARM SHALL BE ANNUNCIATED AT THE BAS.

UNOCCUPIED HUMIDITY CONTROL:

IF THE SPACE RELATIVE HUMIDITY IS GREATER THAN 55% (ADJ.), THE CHILLED WATER VALVE SHALL MODULATE TO MAINTAIN SPACE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) AND THE REHEAT VALVE SHALL MODULATE TO MAINTAIN THE DISCHARGE AIR TEMPERATURE SETPOINT. MODE SHALL TERMINATE WHEN THE SPACE RELATIVE HUMIDITY FALLS BELOW THE RELATIVE HUMIDITY SETPOINT OF 55% (ADJ.) MINUS 3% (ADJ.). IF THE SPACE RELATIVE HUMIDITY SENSOR FAILS THE DEHUMIDIFICATION SEQUENCE SHALL BE TERMINATED AND AN ALARM

SHALL BE ANNUNCIATED AT THE BAS.

DEMAND CONTROL VENTILATION:

WHEN THE INPUT CO2 CONCENTRATION SETPOINT (ADJ.) IS REACHED, THE OUTSIDE AIR DAMPER SHALL MODULATE OPEN IN SMALL INCREMENTS UNTIL THE RETURN CO2 LEVEL IS SATISFIED OR THE OUTSIDE AIR DAMPER REACHES THE FULLY OPEN POSITION. IF THE INPUT CO2 CONCENTRATION FALLS, THE OUTSIDE AIR DAMPER SHALL MODULATE TOWARD MINIMUM VENTILATION SETPOINT. IF THE MIXED AIR TEMPERATURE DROPS BELOW THE MIXED AIR LOW LIMIT SETPOINT THE SPACE CO2 SENSOR INPUT IS OVERRIDDEN AND MODULATES THE OUTSIDE AIR DAMPER CLOSED TO MAINTAIN THE MIXED AIR TEMPERATURE LOW LIMIT SETPOINT. WHEN THE MIXED AIR TEMPERATURE RISES ABOVE THE MIXED AIR LOW LIMIT SETPOINT, CO2 OPERATION IS ONCE AGAIN

RESTORED.

SUPPLY FAN:

THE SUPPLY FAN SHALL BE ENABLED WHILE IN THE OCCUPIED MODE AND CYCLED ON DURING THE UNOCCUPIED MODE. THE UNIT CONTROLLER SHALL VARY THE SUPPLY FAN SPEED TO OPTIMIZE MINIMUM FAN SPEED IN ALL COOLING AND HEATING MODES. A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FAN. IF THE SWITCH DOES NOT OPEN WITHIN 40 SECONDS AFTER A REQUEST FOR FAN OPERATION A FAN FAILURE ALARM SHALL BE ANNUNCIATED, THE UNIT SHALL STOP, REQUIRING A MANUAL RESET.

OUTSIDE AIR DAMPER AND EXHAUST AIR DAMPER TRACKING:

THE EXHAUST AIRFLOW SHALL MODULATE IN UNISON WITH THE OUTSIDE AIRFLOW. THE EXHAUST AIRFLOW

SETPOINT SHALL BE 100% (ADJ.) OF THE OUTSIDE AIRFLOW MINUS 1,000 CFM.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

HIGH EXHAUST AIRFLOW: IF THE EXHAUST AIRFLOW IS AN ADJUSTABLE PERCENTAGE GREATER THAN SETPOINT.

LOW EXHAUST AIRFLOW: IF THE EXHAUST AIRFLOW IS AN ADJUSTABLE PERCENTAGE LESS THAN SETPOINT.

MIXED AIR LOW LIMIT:

THE INITIAL DAMPER OPENING RATE SHALL BE LIMITED TO 2% PER MINUTE (ADJ.) UNTIL THE DAMPER HAS REACHED ITS MINIMUM VENTILATION POSITION. THE OUTSIDE AIR DAMPER SHALL MODULATE TO A POSITION LESS THAN THE MINIMUM DAMPER POSITION IF THE MIXED AIR TEMPERATURE DROPS BELOW 50.0 DEG. F (ADJ.). IF THE MIXED AIR TEMPERATURE SENSOR FAILS AN ALARM SHALL BE ANNUNCIATED AT THE BAS AND THE OUTSIDE AIR

DAMPER SHALL RETURN TO THE MINIMUM POSITION.

FREEZE PROTECTION:

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% (ADJUST PER CLIMATE) 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.

FILTER STATUS:

A DIFFERENTIAL PRESSURE SWITCH SHALL MONITOR THE DIFFERENTIAL PRESSURE ACROSS THE FILTER WHEN THE FAN IS RUNNING. IF THE SWITCH CLOSES DURING NORMAL OPERATION A DIRTY FILTER ALARM SHALL BE

ANNUNCIATED AT THE BAS.

SUPPLY AIR SMOKE DETECTION: THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING A

SUPPLY AIR SMOKE DETECTOR STATUS.

SEQUENCE OF OPERATIONS - AHU (HIGH VOLUME)

NOT TO SCALE1 CONTROL DIAGRAM - AHU (HIGH VOLUME)

TH

BI - FREEZESTAT

AO - MIXED AIR DAMPERS

AI - MIXED AIR TEMP

AI - RETURN AIR TEMP

M

CT

VFD

BO - RETURN FAN START/STOP

BI - RETURN FAN STATUS

RA

AO - RETURN FAN VFD SPEED

BI - RETURN FAN VFD FAULT

EA

AI - RETURN AIR CARBON DIOXIDE PPM AI - RETURN AIR HUMIDITY

AI - SUPPLY AIR TEMP

BO - SUPPLY FAN START/STOP

BI - SUPPLY FAN STATUS

AO - SUPPLY FAN VFD SPEED

BI - SUPPLY FAN VFD FAULT

HWS

HWR

AO - HEATING VALVEAO - COOLING VALVE

CHWS

CHWR

AI - FILTER DIFFERENTIAL

PRESSURE

INSIDE OUTSIDE

H L

AI - BUILDING STATIC PRESSURE

MONITOR ONLY

M

CO2

SF

RF

N.C.

N.O.

CHW HW

H AI - ZONE TEMP/HUMIDITY

AI - ZONE TEMP SETPOINT ADJUST

BI - ZONE OVERRIDE

T

M

TTTH LM

N.C. M

CT

VFD

SA

M M

BI - SUPPLY AIR SMOKE DETECTOR

OUTSIDE

INSIDE BUILDINGOUTSIDE BUILDING

INSIDE

BUILDING

OUTSIDE

BUILDING

AO - EXHAUST AIR DAMPER

AO - OUTSIDE AIR DAMPER

AI - OUTSIDE

AIRFLOW

AI - EXHAUST

AIRFLOW

BI - ATFP

EMERGENCY

SHUT DOWNE

POINTS LIST - AHU (HIGH VOLUME)

HARDWARE POINTS SOFTWARE POINTS

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

GRAPHIC

BUILDING STATIC PRESSURE X X X

FILTER DIFFERENTIAL PRESSURE X X

MIXED AIR TEMP X X X

RETURN AIR CARBON DIOXIDE PPM X X X

RETURN AIR HUMIDITY X X X

RETURN AIR TEMP X X X

SUPPLY AIR TEMP X X X

COOLING VALVE X X X

HEATING VALVE X X X

MIXED AIR DAMPERS X X X

EXHAUST AIR DAMPER X X X

OUTSIDE AIR DAMPER X X X

RETURN FAN VFD SPEED X X X

SUPPLY FAN VFD SPEED X X X

FREEZESTAT X X X X

RETURN FAN STATUS X X X

RETURN FAN VFD FAULT X X X

SUPPLY AIR SMOKE DETECTOR X X X X

SUPPLY FAN STATUS X X X

SUPPLY FAN VFD FAULT X X X

RETURN FAN START/STOP X X X

SUPPLY FAN START/STOP X X X

DEHUMIDIFICATION SETPOINT X X X

RETURN AIR CO2 PPM SETPOINT X X X

SUPPLY AIR TEMP SETPOINT X X X

EMERGENCY SHUTDOWN X X X X

FILTER CHANGE REQUIRED X X

HIGH BUILDING STATIC PRESSURE X

HIGH MIXED AIR TEMP X

HIGH RETURN AIR C02

CONCENTRATION X

HIGH RETURN AIR HUMIDITY X

HIGH RETURN AIR TEMP X

HIGH SUPPLY AIR STATIC PRESSURE X

HIGH SUPPLY AIR TEMP X

LOW BUILDING STATIC PRESSURE X

LOW MIXED AIR TEMP X

LOW RETURN AIR HUMIDITY X

LOW RETURN AIR TEMP X

LOW SUPPLY AIR STATIC PRESSURE X

LOW SUPPLY AIR TEMP X

RETURN FAN FAILURE X

RETURN FAN IN HAND X

RETURN FAN RUNTIME EXCEEDED X

SUPPLY FAN FAILURE X

SUPPLY FAN IN HAND X

SUPPLY FAN RUNTIME EXCEEDED X

OUTSIDE AIR CONDITIONS:

THE CONTROLLER SHALL MONITOR THE OUTSIDE AIR TEMPERATURE AND HUMIDITY AND CALCULATE THE OUTSIDE AIR ENTHALPY ON A CONTINUAL BASIS. THESE VALUES SHALL BE MADE AVAILABLE TO THE SYSTEM AT

ALL TIMES.

ALARM SHALL BE GENERATED AS FOLLOWS:

• SENSOR FAILURE: SENSOR READING INDICATES SHORTED OR DISCONNECTED SENSOR. IN THE EVENT OF A

SENSOR FAILURE, AN ALTERNATE OUTSIDE AIR CONDITIONS SENSOR SHALL BE MADE AVAILABLE TO THE

SYSTEM WITHOUT INTERRUPTION IN SENSOR READINGS.

IF AN OA TEMP SENSOR CANNOT BE READ, A DEFAULT VALUE OF 65°F WILL BE USED.

IF AN OA HUMIDITY SENSOR CANNOT BE READ, A DEFAULT VALUE OF 50 % WILL BE USED.

OUTSIDE AIR TEMPERATURE HISTORY:

THE CONTROLLER SHALL MONITOR AND RECORD THE HIGH AND LOW TEMPERATURE READINGS FOR THE OUTSIDE AIR. THESE READINGS SHALL BE RECORDED ON A DAILY, MONTH-TO-DATE, AND YEAR-TO-DATE BASIS.

SEQUENCE OF OPERATION - OUTSIDE AIR MONITORING

AI - OUTSIDE AIR TEMP

AI - OUTSIDE AIR HUMIDITY

T

NOT TO SCALE2 CONTROL DIAGRAM - OUTSIDE AIR MONITORING

OUTSIDE AIR MONITORING POINTS

HARDWARE POINTS SOFTWARE POINTS

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

OUTSIDE AIR HUMIDITY X X X

OUTSIDE AIR TEMP X X X

OUTSIDE AIR ENTHALPY X X X

OUTSIDE AIR HUMIDITY (ALTERNATE) X X

OUTSIDE AIR TEMP (ALTERNATE) X X

HIGH TEMP MONTH-TO-DATE X X

HIGH TEMP TODAY X X

HIGH TEMP YEAR-TO-DATE X X

LOW TEMP MONTH-TO-DATE X X

LOW TEMP TODAY X X

LOW TEMP YEAR-TO-DATE X X

SENSOR FAILURE X

NOT TO SCALE3 ECMS NETWORK DIAGRAM

FIELD

SERVER

CASCADE

LOYTEC

ROUTER

BASE

LAN

BUILDING

SUPERVISORY

CONTROLLER

LEAD

BOILER BOILER

MSTP

*OAT

*SYSTEM SUPPLY

TEMP

FIELD

CONTROLLER

*SUPPLIED WITH

BOILER

CHILLERWATER

HEATER

BUILDING RETURN TEMP

BUILDING SUPPLY TEMP

AutoCAD SHX Text

SYM

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DATE

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APPROVED

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REVISIONS

AutoCAD SHX Text

SATISFACTORY TO: DATE

AutoCAD SHX Text

APPROVED: PWO OR OICC DATE

AutoCAD SHX Text

DESIGN DIR.

AutoCAD SHX Text

SUBMITTED BY:

AutoCAD SHX Text

DR.

AutoCAD SHX Text

CHK.

AutoCAD SHX Text

DES.

AutoCAD SHX Text

CAMP LEJEUNE, NORTH CAROLINA

AutoCAD SHX Text

CONST. CONTR.

AutoCAD SHX Text

MARINE CORPS BASE

AutoCAD SHX Text

DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND

AutoCAD SHX Text

SCALE:

AutoCAD SHX Text E1

AutoCAD SHX Text

SIZE

AutoCAD SHX Text 80091

AutoCAD SHX Text

SPEC.

AutoCAD SHX Text

CODE IDENT. NO

AutoCAD SHX Text

NAVFAC DRAWING NO.

AutoCAD SHX Text

SHEET OF

AutoCAD SHX Text 18168

AutoCAD SHX Text

MULTIPURPOSE AND GYMNASIUM

AutoCAD SHX Text

RENOVATIONS 115 & 201

AutoCAD SHX Text 20-0046

AutoCAD SHX Text

NA

AutoCAD SHX Text

NOTED

AutoCAD SHX Text

PRELIMINARY

AutoCAD SHX Text

T H BURTON, PE

AutoCAD SHX Text M-602

AutoCAD SHX Text

MECHANICAL

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CONTROLS

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GRM

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GRM

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DMH

USE FOR

CONSTRUCTION

2246 Yaupon Drive

Wilmington, NC 28401

Phone: 910.791.4000

Fax: 910.791.5266 www.cbhfengineers.com

NC# P-0506

c

Copyright 2020 CBHF Engineers, PLLC

Engineers, PLLC

DISCLOSURE OF INFORMATION:

CONTRACTOR SHALL COMPLY AS FOLLOWS:

A. THE CONTRACTOR SHALL NOT RELEASE TO ANYONE OUTSIDE THE CONTRACTOR'S ORGANIZATION ANY UNCLASSIFIED INFORMATION, REGARDLESS OF MEDIUM (E.G. FILM, TAPE, DOCUMENT), PERTAINING TO ANY PART OF THIS CONTRACT

OR ANY PROGRAM RELATED TO THIS CONTRACT, UNLESS-

1. THE CONTRACTING OFFICER HAS GIVEN PRIOR WRITTEN APPROVAL; OR

2. THE INFORMATION IS OTHERWISE IN THE PUBLIC DOMAIN BEFORE THE DATE OF THE RELEASE.

B. REQUESTS FOR APPROVAL SHALL IDENTIFY THE SPECIFIC INFORMATION TO BE RELEASED, THE MEDIUM TO BE USED, AND THE PURPOSE FOR THE RELEASE. THE CONTRACTOR SHALL SUBMIT ITS REQUEST TO THE CONTRACTING

OFFICER AT LEAST 45 DAYS BEFORE THE PROPOSED DATE FOR RELEASE.

C. THE CONTRACTOR AGREES TO INCLUDE A SIMILAR REQUIREMENT IN EACH SUBCONTRACT UNDER THIS CONTRACT.

SUBCONTRACTORS SHALL SUBMIT REQUESTS FOR AUTHORIZATION TO RELEASE THROUGH THE PRIME CONTRACTOR

TO THE CONTRACTING OFFICER.

THE RFP-DOCUMENTS (RFPD), INCLUDING BUT NOT LIMITED TO: THE DRAWINGS, PLANS, DESIGNS, REPORTS, SURVEYS, CALCULATIONS, COMPUTER PRINT-OUTS, ETC. ARE MADE AVAILABLE TO THE CONTRACTOR'S FOR REFERENCE PURPOSES ONLY IN RELATION TO THIS DESIGN-BID PROJECT. THE RFPD ARE THE PROPERTY OF THE GOVERNMENT.

THE RFPD ARE PROVIDED "AS-IS" WITHOUT ANY GUARANTEE, REPRESENTATION, CONDITION, OR WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, OR STATUTORY.

THE GOVERNMENT ASSUMES NO LIABILITY WITH RESPECT TO ANY RELIANCE THE CONTRACTOR(S) PLACE ON THESE RFPD. IF THE CONTRACTOR(S) RELY ON THESE RFPD IN ANY WAY, THE CONTRACTOR(S) ASSUME THE ENTIRE RISK AS TO THE TRUTH, ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION CONTAINED IN THESE RFPD.

NOT TO SCALE1 CONTROL DIAGRAM - BOILER PLANT

B02

BO - BOILER 2 ENABLE

BI - BOILER 2 STATUS

OAT

BO - BOILER 1 ENABLE

BI - BOILER 1 STATUS

AI - PRIMARY HOT WATER RETURN TEMP

AI - PRIMARY HOT WATER SUPPLY TEMP

T

T

AO - BOILER 1 HOT WATER SUPPLY TEMP SETPOINT RESET

AO - BOILER 2 HOT WATER SUPPLY TEMP SETPOINT RESET

M

CT

STARTER

BO - CIRCULATION PUMP 1 START/STOP

BI - CIRCULATION PUMP 1 STATUS

M

CT

STARTER

BO - CIRCULATION PUMP 2 START/STOP

BI - CIRCULATION PUMP 2 STATUS

HWS

HWR

HWS

HWR

HWP01A

M

CT

VFD

CT

VFD

BO - HOT WATER PUMP 1 START/STOP

BI - HOT WATER PUMP 1 STATUS

BI - HOT WATER PUMP 2 STATUS

BO - HOT WATER PUMP 2 START/STOP

H L

AI - HOT WATER DIFFERENTIAL PRESSURE

AO - HOT WATER PUMP 1 VFD SPEED

BI - HOT WATER PUMP 1 VFD FAULT

AO - HOT WATER PUMP 2 VFD SPEED

BI - HOT WATER PUMP 2 VFD FAULT

M

SEQUENCE OF OPERATIONS

RUN CONDITIONS - SCHEDULED:

THE FAN SHALL RUN ACCORDING TO A USER DEFINABLE SCHEDULE.

FAN:

THE FAN SHALL HAVE A USER DEFINABLE (ADJ.) MINIMUM RUNTIME.

EXHAUST AIR DAMPER:

THE EXHAUST AIR DAMPER SHALL OPEN ANYTIME THE UNIT RUNS AND SHALL CLOSE ANYTIME THE UNIT STOPS. THE

EXHAUST AIR DAMPER SHALL CLOSE 30 SEC (ADJ.) AFTER THE FAN STOPS.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• DAMPER FAILURE: COMMANDED OPEN, BUT THE STATUS IS CLOSED.

• DAMPER IN HAND: COMMANDED CLOSED, BUT THE STATUS IS OPEN.

DAMPER STATUS:

THE FAN SHALL BE ENABLED AFTER THE DAMPER STATUS HAS PROVEN.

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.).

SEQUENCE OF OPERATION - SCHEDULED

NOT TO SCALE2 CONTROL DIAGRAM - SCHEDULED

EA

DO - FAN START/STOP

M

CT

DI - FAN STATUS

BP02

BP01

HWP01B

SEQUENCE OF OPERATION - BOILER PLANT

GENERAL DESCRIPTION:

THE HOT WATER SYSTEM CONSISTS OF MULTIPLE BOILERS AND ASSOCIATED PUMPS. THE BUILDING AUTOMATION SYSTEM (BAS) CONTROLLER SHALL PROVIDE STAND-ALONE CONTROL OR BAS WORKSTATION CONTROL OF THE SUPPLY HEATING WATER TEMPERATURE SETPOINT (ADJ.) BY CONTROLLING THE BOILER'S ENABLE/DISABLE BOILER SIGNAL. THE BAS CONTROLLER SHALL BE EQUIPPED WITH A HUMAN-INTERFACE PANEL THAT SHALL BE PASSWORD PROTECTED TO PREVENT UNAUTHORIZED ACCESS.

HEATING SYSTEM ENABLE/DISABLE:

THE HEATING SYSTEM SHALL BE ENABLED 24/7/365. WHEN ENABLED, THE BAS CONTROLLER SHALL START THE LEAD HOT WATER DISTRIBUTION PUMP, THE LEAD BOILER CIRCULATING PUMP, AND ENABLE THE LEAD BOILER. THE BOILER FACTORY CONTROL SHALL

OPERATE THE BOILER TO MAINTAIN ITS LOCAL SUPPLY SETPOINT.

BOILER CONTROL:

THE BOILER LEAD/LAG SEQUENCE SHALL ROTATE ON THE 1ST AND 15TH OF THE MONTH. FROM THE BAS CONTROLLER HUMAN-INTERFACE PANEL OR A BAS WORKSTATION, AN OPERATOR SHALL BE ABLE TO MANUALLY CHANGE THE LEAD/LAG SEQUENCE.

IF THE HOT WATER DISTRIBUTION SYSTEM SUPPLY TEMPERATURE FALLS MORE THAN 15.0 DEG. F (ADJ.) BELOW SETPOINT FOR A PERIOD LONGER THAN 15 MINUTES (ADJ.), OR IF AN ACTIVE BOILER SIGNALS A FAILURE ALARM, THE BAS CONTROLLER SHALL ENABLE THE LAG BOILER. IN ADDITION, THE BAS CONTROLLER SHALL SEND AN ALARM TO THE BAS WORKSTATION. WHEN A BOILER FAILURE EXISTS, LEAD/LAG AUTOMATION SHALL BE DISABLED AND THE CURRENTLY RUNNING BOILER SHALL BECOME THE LEAD BOILER. ONCE THE PROBLEM IS CORRECTED, THE OPERATOR SHALL BE ABLE TO CLEAR THE ALARM FAILURE FROM THE BAS CONTROLLER OR BAS

WORKSTATION. THIS SHALL RE-ENABLE THE LEAD/LAG SEQUENCE.

ONCE THE LEAD BOILER IS ENABLED, THE ADD SEQUENCE OF ADDITIONAL BOILERS SHALL BE DISABLED FOR A PERIOD OF 30 MINUTES (ADJ.). ADDITIONAL BOILERS ARE ADDED IF THE HOT WATER DISTRIBUTION SYSTEM SUPPLY TEMPERATURE FALLS 5.0 DEG. F (ADJ.) BELOW

THE HOT WATER SETPOINT FOR A PERIOD OF 10 MINUTES (ADJ.) OR MORE.

THE LAST BOILER ENABLED SHALL BE DISABLED WHEN THE HOT WATER TEMPERATURE RISES 5.0 DEG. F (ADJ.) ABOVE THE HOT WATER SETPOINT FOR A PERIOD OF 10 MINUTES (ADJ.) OR MORE. ADDITIONAL BOILERS SHALL BE DISABLED FOLLOWING THE SAME SUBTRACTION SEQUENCE IF THE HOT WATER TEMPERATURE REMAINS 5.0 DEG. F (ADJ.) ABOVE THE HOT WATER SETPOINT FOR A PERIOD OF 10 MINUTES

(ADJ.) OR MORE.

HOT WATER RESET:

THE HOT WATER SUPPLY TEMPERATURE SETPOINT SHALL BE LINEARLY RESET FROM 100.0 DEG. F (ADJ.) TO 130.0 DEG. F (ADJ.) AS THE

OUTSIDE AIR TEMPERATURE FALLS FROM 60.0 DEG. F (ADJ.) TO 30.0 DEG. F (ADJ.)

HOT WATER DISTRIBUTION PUMP START/STOP:

THE BAS CONTROLLER SHALL START A HOT WATER PUMP THROUGH A CONTACT CLOSURE OF THE PUMP'S VARIABLE FREQUENCY DRIVE

(VFD) RUN-ENABLE CONTACTS.

HOT WATER DISTRIBUTION PUMP STATUS:

THE BAS CONTROLLER SHALL DETECT HOT WATER PUMP RUN STATUS BY A VFD CURRENT SWITCH.

HOT WATER DISTRIBUTION PUMP LEAD/LAG:

THE HOT WATER PUMP LEAD/LAG SEQUENCE SHALL ROTATE ON THE 1ST AND 15TH OF THE MONTH. FROM THE BAS CONTROLLER HUMAN-INTERFACE PANEL OR A BAS WORKSTATION, AN OPERATOR SHALL BE ABLE TO MANUALLY CHANGE THE LEAD/LAG SEQUENCE.

IF THE LEAD PUMP SPEED FALLS BELOW 40% (ADJ.) FOR FIVE MINUTES (ADJ.) THE LAG PUMP SHALL BE DISABLED.

HOT WATER DISTRIBUTION PUMP FAILURE:

IF THE LEAD START/STOP RELAY IS ENABLED AND THE CURRENT SWITCH STATUS IS OFF FOR MORE THAN 30 SECONDS (ADJ.), THE BAS CONTROLLER SHALL ANNUNCIATE A HOT WATER PUMP FAILURE ALARM TO THE BAS WORKSTATION AND STARTS THE LAG PUMP. WHEN A PUMP FAILURE EXISTS, LEAD/LAG AUTOMATION SHALL BE DISABLED AND THE CURRENTLY RUNNING PUMP BECOMES THE LEAD PUMP.

ONCE THE PROBLEM HAS BEEN CORRECTED, THE OPERATOR SHALL BE ABLE TO CLEAR THE ALARM FAILURE FROM THE BAS CONTROLLER

OR BAS WORKSTATION. THIS ACTION SHALL RE-ENABLE THE LEAD/LAG SEQUENCE.

HOT WATER DISTRIBUTION PUMP SPEED:

THE BAS CONTROLLER SHALL MONITOR THE HOT WATER SYSTEM DIFFERENTIAL PRESSURE SENSOR. WHEN THE PUMP VFD IS ENABLED, THE BAS CONTROLLER SHALL CONTROL THE ANALOG SPEED SIGNAL SENT TO THE PUMP VFD TO MAINTAIN A HOT WATER DIFFERENTIAL

PRESSURE SETPOINT OF 50.0 PSIG (ADJ.).

PUMP OPTIMIZATION:

THE BAS SHALL CONTINUALLY MONITOR THE HOT WATER CONTROL VALVE POSITION OF ALL AHU'S IN THE HOT WATER SYSTEM.

AT HOT WATER SYSTEM STARTUP, THE HOT WATER PRESSURE SETPOINT IS 100% OF THE MAXIMUM PRESSURE SETPOINT. WHEN ALL HOT WATER VALVES ARE LESS THAN 85% OPEN, THE HOT WATER DIFFERENTIAL PRESSURE SETPOINT SHALL BE LOWERED BY 0.1 PSIG (ADJ.) OF THE CURRENT HOT WATER DIFFERENTIAL PRESSURE SETPOINT. THIS OCCURS EVERY 5 MINUTES UNTIL AT LEAST ONE VALVE IS MORE THAN 85% OPEN, OR IF THE SETPOINT IS EQUAL TO THE MINIMUM HOT WATER DIFFERENTIAL PRESSURE SETPOINT, OR IF THE PUMP VFD'S

ARE AT A MINIMUM SPEED SETTING (22 HZ).

WHEN ANY HOT WATER VALVE IS MORE THAN 95% OPEN, THE HOT WATER PRESSURE SETPOINT SHALL INCREASES BY 0.1 PSIG (ADJ.) OF THE CURRENT HOT WATER DIFFERENTIAL SETPOINT. THIS OCCURS EVERY 5 MINUTES UNTIL NO VALVE IS MORE THAN 95% OPEN, OR IF THE HOT WATER DIFFERENTIAL PRESSURE SETPOINT HAS RISEN TO THE SYSTEM'S MAXIMUM SETTING, OR IF THE PUMP VFD'S ARE AT THE

MAXIMUM SETTING (60 HZ).

FREEZE PROTECTION:

WHEN THE OUTDOOR AIR TEMPERATURE FALLS BELOW 35.0 DEG. F (ADJ.), THE HOT WATER DISTRIBUTION PUMP SHALL OPERATE CONTINUOUSLY TO PROVIDE HOT WATER CIRCULATION TO ALL ASSOCIATED HOT WATER COILS. IF THE HOT WATER SUPPLY TEMPERATURE FALLS BELOW 130.0 DEG.