M802.pdf

PDF 370 KB Posted Apr 1, 2025

Attached to: IDIQ Small Business Multiple Award Construction Contract for General Construction Projects Primarily for the Marine Corps Base Camp Lejeune and Marine Corps Air Station Cherry Point
Solicitation number: N4008524R2785
Issued by: Department of the Navy Naval Facilities Engineering Command

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Written by GovTribe AI · Apr 1, 2025

This document is a mechanical engineering control system diagram for a Design Wing Relocation project at Marine Corps Base Camp Lejeune, specifically focusing on Building 1005's exhaust fan and unit heater control systems. The technical drawing details multiple point lists including VHF points, exhaust fan/unit heater points, and communication room temperature sensor points, with comprehensive sequence of operations for various HVAC components. The diagram illustrates the control system architecture, showing interconnections between Air Handling Unit (AHU), Variable Frequency Drive (VFD), Variable Air Volume (VAV), and telecom space sensors on an existing bacnet bus. The document is part of construction documents for mechanical systems, specifically labeled as sheet M802 for Marine Corps Base construction work, indicating it is a detailed technical specification for HVAC control system design and integration.

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Attachment B - CONSTRUCTION AND DESIGN EXPERIENCE PROJECT DATA.docx	DOCX document	Feb 11, 2025
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DESIGN WING RELOCATION

BUILDING 1005

EXHAUST FAN/UNIT HEATER CONTROL DIAGRAM2

COMM ROOM 313 TEMPERATURE3

VAV CONTROL DIAGRAM1

CONTROL SYSTEM ARCHITECTURE4

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J F ORR PE

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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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R DUNCAN

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C MAAS

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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 SYSTEMS COMMAND

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SIZE

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CODE IDENT. NO

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NAVFAC DRAWING NO.

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C MAAS

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K ROOT

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SCALE: NOTED

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SHEET OF

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SPEC.

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SYM

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DATE

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APPROVED

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REVISIONS

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OUTSIDE AIR

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EXHAUST TO EXTERIOR

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MECHANICAL ROOM

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GRAVITY BACKDRAFT DAMPER

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BI - EF1 STATUS

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AI - ZONE TEMPERATURE

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BI - ZONE OCCUPANCY OVERRIDE

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EXHAUST FAN/UNIT HEATER POINTS LIST

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SOFTWARE POINTS

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MECH. ZONE TEMPERATURE

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POINT NAME

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MECH. ZONE OVERRIDE

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EF1 STATUS

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UH1 STATUS

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HARDWARE POINTS

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LOOP

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SCHED

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TREND

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ALARM

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SHOW ON

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GRAPHIC

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SCALE: N.T.S.

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AutoCAD SHX Text GENERAL: WHEN THE SPACE TEMPERATURE IS ABOVE 85°F (ADJUSTABLE), THE MOTORIZED OUTSIDE AIR DAMPER SHALL OPEN AND THE EXHAUST FAN SHALL ENERGIZE. WHEN THE SPACE TEMPERATURE IS BELOW 85°F (ADJUSTABLE), THE MOTORIZED OUTSIDE AIR DAMPER SHALL CLOSE AND THE EXHAUST FAN SHALL DE-ENERGIZE. WHEN THE SPACE TEMPERATURE IS BELOW 50°F (ADJUSTABLE), THE UNIT HEATER SHALL ENERGIZE. WHEN THE SPACE TEMPERATURE IS ABOVE 60°F (ADJUSTABLE), THE UNIT HEATER SHALL DE-ENERGIZE. MANUAL: WHEN INITIATED, THE MOTORIZED OUTSIDE AIR DAMPER SHALL OPEN AND THE EXHAUST FAN SHALL RUN FOR A MAXIMUM DURATION OF 60 MINUTES (ADJUSTABLE). AFTER 60 MINUTES (ADJUSTABLE), THE MOTORIZED OUTSIDE AIR DAMPER SHALL CLOSE AND THE EXHAUST FAN SHALL DE-ENERGIZE. ALARMS: IF THE MOTORIZED OUTSIDE AIR DAMPER STATUS DOES NOT MATCH THE COMMAND AFTER 90 SECONDS (ADJUSTABLE) AFTER BEING COMMANDED OPEN, AN ALARM WILL BE GENERATED. IF THE UNIT HEATER STATUS DOES NOT MATCH THE COMMAND AFTER 90 SECONDS (ADJUSTABLE) AFTER BEING COMMANDED ON, AN ALARM WILL BE GENERATED. IF THE EXHAUST FAN STATUS DOES NOT MATCH THE COMMAND AFTER 90 SECONDS (ADJUSTABLE) AFTER BEING COMMANDED ON, AN ALARM WILL BE GENERATED. MECH. ZONE TEMPERATURE SHALL HAVE AN ADJUSTABLE LOW AND HIGH ALARM LIMIT.

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EXHAUST FAN/UNIT HEATER SEQUENCE OF OPERATIONS

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UH1 FAILURE

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OUTSIDE AIR DAMPER FAILURE

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OUTSIDE AIR DAMPER STATUS

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EF1 FAILURE

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BI - OUTSIDE AIR DAMPER STATUS

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UNIT HEATER

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COMMUNICATION ROOM 313 TEMPERATURE SENSOR POINTS LIST

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SOFTWARE POINTS

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ZONE TEMPERATURE

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POINT NAME

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HIGH ZONE TEMPERATURE

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HARDWARE POINTS

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LOOP

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SCHED

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TREND

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ALARM

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SHOW ON

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AutoCAD SHX Text GENERAL: TEMPERATURE SENSOR SHALL MONITOR THE ZONE TEMPERATURE OF THE COMMUNICATIONS ROOM. ALARMS: ZONE TEMPERATURE SHALL HAVE AN ADJUSTABLE HIGH ALARM LIMIT INITIALLY SET TO 80°F (ADJ.).

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COMMUNICATION ROOM 313 SEQUENCE OF OPERATIONS

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AI - AIRFLOW

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AO - ZONE DAMPER

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HHW

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AI - DISCHARGE AIR TEMP

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AO - HEATING VALVE

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HHWR

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HHWS

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VAV POINTS LIST

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SOFTWARE POINTS

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ZONE TEMPERATURE

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POINT NAME

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ZONE WARM/COOL ADJUST

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ZONE TEMPERATURE SETPOINT

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AIRFLOW

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HARDWARE POINTS

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LOOP

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SCHED

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TREND

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ALARM

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SHOW ON

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GRAPHIC

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AIRFLOW SETPOINT

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ZONE DAMPER SETPOINT

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ZONE DAMPER

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EFFECTIVE HEATING SETPOINT

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HEATING VALVE

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EFFECTIVE COOLING SETPOINT

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HEATING VALVE SETPOINT

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ZONE OCCUPANCY OVERRIDE

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DISCHARGE AIR TEMPERATURE

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HIGH ZONE TEMEPRATURE

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LOW ZONE TEMPERATURE

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SCALE: N.T.S.

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AI - ZONE WARM/COOL ADJUST

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AI - MECH. ZONE TEMPERATURE

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BI - MECH. ZONE OVERRIDE

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AI - ZONE TEMPERATURE

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AutoCAD SHX Text A. SETPOINTS AND AIRFLOW SETTINGS SETPOINTS AND AIRFLOW SETTINGS 1. PROGRAM TEMPERATURE SETPOINTS PROGRAM TEMPERATURE SETPOINTS a. OCCUPIED ACTIVE TEMPERATURE SETPOINT (°F) PER RESET SCHEDULE OCCUPIED ACTIVE TEMPERATURE SETPOINT (°F) PER RESET SCHEDULE 1) 70°F @ 50°F OUTSIDE AMBIENT 70°F @ 50°F OUTSIDE AMBIENT 2) 76°F @ 80°F OUTSIDE AMBIENT 76°F @ 80°F OUTSIDE AMBIENT 3) BETWEEN 50°F AND 80°F, RESET ADJUSTMENTS SHALL BE LINEAR BETWEEN 50°F AND 80°F, RESET ADJUSTMENTS SHALL BE LINEAR b. UNOCCUPIED TEMPERATURE SETPOINTS (°F) UNOCCUPIED TEMPERATURE SETPOINTS (°F) 1) 60°F HEATING 60°F HEATING 2) 80°F COOLING 80°F COOLING c. THE ZONE EFFECTIVE SETPOINT SHALL BE THE OCCUPIED ZONE SETPOINT PLUS THE ZONE EFFECTIVE SETPOINT SHALL BE THE OCCUPIED ZONE SETPOINT PLUS THE OCCUPANT OFFSET OF +/-2°F (ADJ.). d. THE OFFSET BETWEEN HEATING VALVE (HEATING), THE PRIMARY AIR DAMPER THE OFFSET BETWEEN HEATING VALVE (HEATING), THE PRIMARY AIR DAMPER (COOLING) AND THE ZONE EFFECTIVE SETPOINT SHALL BE NO LESS THAN +/- 1F. 2. PROGRAM ALL VAV TERMINAL UNIT FLOW SET POINTS PER SCHEDULE PROGRAM ALL VAV TERMINAL UNIT FLOW SET POINTS PER SCHEDULE a. COOLING MAXIMUM AIRFLOW SETPOINT (CFM) COOLING MAXIMUM AIRFLOW SETPOINT (CFM) b. COOLING MINIMUM AIRFLOW SETPOINT (CFM) COOLING MINIMUM AIRFLOW SETPOINT (CFM) c. HEATING AIRFLOW SETPOINT (CFM) HEATING AIRFLOW SETPOINT (CFM) B. OCCUPIED CONTROL SEQUENCE: OCCUPIED CONTROL SEQUENCE: OCCUPIED AND UNOCCUPIED MODE SHALL BE DETERMINED BY THE ASSOCIATED AHU SCHEDULE. HEATING VALVE AND PRIMARY AIR DAMPER SHALL MODULATE TO MAINTAIN THE ZONE EFFECTIVE SETPOINT. 1. HEATING MODE: HEATING MODE: a. MODULATE THE HOT WATER RE-HEAT VALVE TO MAINTAIN ZONE EFFECTIVE MODULATE THE HOT WATER RE-HEAT VALVE TO MAINTAIN ZONE EFFECTIVE TEMPERATURE SETPOINT. 2. COOLING MODE: COOLING MODE: a. MODULATE THE ZONE DAMPER BETWEEN SCHEDULED COOLING MINIMUM AIRFLOW MODULATE THE ZONE DAMPER BETWEEN SCHEDULED COOLING MINIMUM AIRFLOW AND COOLING MAXIMUM AIRFLOW TO MAINTAIN ZONE EFFECTIVE TEMPERATURE SETPOINT. C. UNOCCUPIED CONTROL SEQUENCE: UNOCCUPIED CONTROL SEQUENCE: 1. VAV UNITS SHALL CONTROL TO THEIR UNOCCUPIED HEATING OR COOLING SETPOINTS VAV UNITS SHALL CONTROL TO THEIR UNOCCUPIED HEATING OR COOLING SETPOINTS DURING UNOCCUPIED PERIODS. 2. THE AHU WILL START ONLY DURING UNOCCUPIED COOLING MODE BASED ON ITS THE AHU WILL START ONLY DURING UNOCCUPIED COOLING MODE BASED ON ITS UNOCCUPIED SEQUENCE. 3. UNOCCUPIED HEATING MODE: UNOCCUPIED HEATING MODE: a. ON A DROP IN ZONE TEMPERATURE BELOW THE UNOCCUPIED SETPOINT THE ON A DROP IN ZONE TEMPERATURE BELOW THE UNOCCUPIED SETPOINT THE TERMINAL UNIT SHALL BE ENERGIZED, AND THE HOT WATER REHEAT VALVE SHALL BE SET TO 100% OPEN. b. ON A RISE IN ZONE TEMPERATURE 5 DEG F (ADJ.) ABOVE THE UNOCCUPIED ON A RISE IN ZONE TEMPERATURE 5 DEG F (ADJ.) ABOVE THE UNOCCUPIED SETPOINT, THE VALVE SHALL CLOSE, AND THE FAN SHALL BE DE-ENERGIZED. 4. UNOCCUPIED COOLING MODE: UNOCCUPIED COOLING MODE: a. ON A RISE IN ZONE TEMPERATURE ABOVE THE UNOCCUPIED SETPOINT, MODULATE ON A RISE IN ZONE TEMPERATURE ABOVE THE UNOCCUPIED SETPOINT, MODULATE THE ZONE DAMPER TO MAINTAIN COOLING MAXIMUM AIRFLOW. b. THE HOT WATER REHEAT VALVE SHALL REMAIN CLOSED. THE HOT WATER REHEAT VALVE SHALL REMAIN CLOSED. c. THE AVERAGE OF ALL ZONE COOLING DEMAND VALUES DETERMINES WHEN THE THE AVERAGE OF ALL ZONE COOLING DEMAND VALUES DETERMINES WHEN THE ASSOCIATED AHU STARTS IN UNOCCUPIED MODE. REFER TO THE AHU SEQUENCE OF OPERATION FOR SPECIFIC SETTINGS AND PROVIDE COOLING DEMAND VALUES TO THE AHU FIELD CONTROLLER. 5. THE TIMED OVERRIDE BUTTON, IF ACTIVATED, SHALL SET ASSOCIATED VAV THE TIMED OVERRIDE BUTTON, IF ACTIVATED, SHALL SET ASSOCIATED VAV TEMPERATURE SETPOINTS TO THE OCCUPIED MODE FOR 2 HOURS (ADJ.). D. DISCHARGE AIR TEMPERATURE DISCHARGE AIR TEMPERATURE 1. A DISCHARGE AIR TEMPERATURE SENSOR SHALL BE PROVIDED ON EACH BOX FOR A DISCHARGE AIR TEMPERATURE SENSOR SHALL BE PROVIDED ON EACH BOX FOR MONITORING PURPOSES. E. EMERGENCY ATFP EMERGENCY ATFP 1. ACTIVATION OF THE EMERGENCY ATFP SWITCH SHALL, VIA SOFTWARE COMMANDS, ACTIVATION OF THE EMERGENCY ATFP SWITCH SHALL, VIA SOFTWARE COMMANDS, OVERRIDE VAV UNIT OPERATION AND CLOSE THE ZONE DAMPER. F. ALARM SETTINGS ALARM SETTINGS 1. GENERATE AN ALARM AT THE BAS IF THE ZONE TEMPERATURE EXCEEDS +/- 5 DEG GENERATE AN ALARM AT THE BAS IF THE ZONE TEMPERATURE EXCEEDS +/- 5 DEG F (ADJ.) FROM THE EFFECTIVE SETPOINT FOR MORE THAN 60 MINUTES (ADJ.).

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VAV SEQUENCE OF OPERATIONS

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EXISTING BACNET BUS

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AHU

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ENABLE SPEED STATUS

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VFD

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VAV (TYP.)

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TELECOM SPACE SENSOR

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SCALE: N.T.S.

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MECHANICAL - HVAC CONTROLS

AutoCAD SHX Text NOTES: BACNET MS/TP COMMUNICATION LOOP SHALL BE HOME RUN CONNECTION BACK TO BUILDING AUTOMATION CONTROLLER LOCATED IN COMMUNICATION CLOSET A. INTEGRATE NEW DDC DEVICES TO JACE BUILDING AUTOMATION CONTROLLER LOCATED IN COMMUNICATION CLOSET A.

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CONSTRUCTION DOCUMENTS

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AMENDMENT 2. UPDATED DSS SEQUENCE

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Sheets and Views

M802

File details come from the government source that posted it. Updated Apr 1, 2025.