S02 - 08 - VA Hospital Phase 2G - ATC As-Built Drawings.pdf
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- Solicitation number
- 36C24426Q0675
About this file
This document is a partial submittal of design drawings for the VA HVAC Controls Upgrade - Phase 2G project at the VA Medical Center in Wilmington, Delaware. The submittal includes control system specifications and wiring diagrams for Building #13 Regional Office HVAC equipment.
The drawings detail the control systems for two air handling units (AHU-1 and AHU-2) and associated chiller and heat exchanger controls. AHU-1 and AHU-2 utilize FEC-26 and IOM-47 controllers manufactured by Johnson Controls, with point identification tables specifying sensor locations and control functions including outdoor air temperature, return air temperature, mixed air temperature, coil leaving air temperature, and space temperature sensors. The sequence of operations for both units includes manual start/stop capability via the Distributed Control Panel (DCP) or Building Management System (BMS), temperature control through modulating valves during heating and cooling modes, constant supply fan air flow, freeze protection at 45°F with alarm notifications, and emergency shutdown triggered by duct-mounted smoke detectors. Control valves are provided by Modern Controls, with reference to a Master Building Valve Schedule and Master Building Network Architecture Drawing contained in the ATC as-built/O&M manual binder for supervisory controller information and IP addresses. The chiller and heat exchanger control drawing (C-2) references point identification tables for both AHU FEC26 and IOM47 controllers, plus additional AHU2 IOM47 point identification. All pneumatic control devices have been replaced with electronic controls, and contract documents reference existing DDC control panels as "OCP" for project close-out with permanent panel-specific labels to be provided for all new and existing control panels upon VA Hospital approval.
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Text version
MECHANICAL AND CONTROL SYSTEMS
Environmental Control System
Building Automation System
PROJECT
ARCHITECT
ENGINEER
CONTRACTOR
REFERENCE DRAWING
NO. REVISION-LOCATION ECN DATE BY
Automatic Temperature Controls
Heating
Air Conditioning
Air Filters
Water Treatment
Coil Cleaning
Contract Operations
Time-Shared Automated Building Service
Refrigeration
Industrial Controls / Recording / Indication Equipment
Air and Water Systems Balancing
Instrumentation System Installation
Building Operations Management
Energy Conservation Control
Custom Programmed Maintenance
211-1009IW/BM 12/17/12IW/JAIW
VA MEDICAL CENTER
HVAC CONTROLS UPGRADE - PHASE 2G
WILMINGTON, DELAWARE
HATCH MOTT MACDONALD
27 BLEEKER ST.
MILLBURN, NJ 07041
BOB SMITH CONTRACTORS
281 EAST EVERGREEN ST.
WEST GROVE, PA 19390
DEPT. OF VETERANS AFFAIRS
1601 KIRKWOOD HIGHWAY
WILMINGTON, DE 19805
VA HVAC CONTROLS UPGRADE - PHASE 2G
(PARTIAL SUBMITTAL - INCLUDES BLDG. #13 REGIONAL OFFICE HVAC EQUIPMENT)
PAGE # DRAWING TITLE LAST REVISION
TP-1 TITLE PAGE 12/10/13
C-1A AIR HANDLING UNIT CONTROL – AHU-1 12/10/13
C-1B CONTROLLER WIRING DETAIL – AHU-1 12/10/13
C-1C AIR HANDLING UNIT CONTROL – AHU-2 12/10/13
C-1D CONTROLLER WIRING DETAIL – AHU-2 12/10/13
C-1E SEQUENCE OF OPERATIONS – BLDG. 13 AHU-1 & AHU-2 12/10/13
C-2 CHILLER & ASSOCIATED HEAT EXCHANGER CONTROL 12/10/13
AS-BUILT REV. FINAL POINT TERM.1 12/10/13 DB
1 2
AS-BUILT REV. ADD ‘MASTER’ NOTE1 01/28/14 DB
NOTE(S): REFER TO ‘MASTER BUILDING NETWORK ARCHITECTURE DRAWING’
PROVIDED IN OUR ATC AS-BUILT / O&M MANUAL BINDER FOR ALL
SUPERVISORY CONTROLLER INFORMATION AND ASSOCIATED IP
ADDRESSES USED BY MODERN CONTROLS.
REFER TO ‘MASTER BUILDING VALVE SCHEDULE’ PROVIDED IN OUR
ATC AS-BUILT / O&M MANUAL BINDER FOR A COMPLETE LIST OF ALL
CONTROL VALVES PROVIDED FOR AIR HANDLING UNITS AND
ASSOCIATED VAV BOXES.
REFERENCE DRAWING NO. REVISION-LOCATION ECN DATE BY
Sales Engineer Project Manager Application Engineer
BY DATE BY DATE
DRAWN APPROVED
ONTRACT NUMBER
RAWING NUMBER
Drawing Title
Project Title
BM 12/17/12
211-1009
IW/BMIW/JAIW
C-1E
SEQUENCE OF OPERATIONS -
BLDG.#13 AIR HANDLING
UNITS (AHU-1 & AHU-2)
VA HVAC CONTROLS UPGRADE -
PHASE 2G
WILMINGTON, DELAWARE
SEQUENCE OF OPERATIONS - BLDG.#13 AIR HANDLING UNITS
(TYPICAL FOR AHU-1 & AHU-2)
GENERIC AHU - SEQUENCE OF OPERATION
1. GENERAL
UNIT IS MANUALLY STARTED AND STOPPED BY THE DCP OR REMOTELY AT THE BMS. WHEN UNIT IS OFF DAMPER D-1 IS CLOSED. WHEN UNIT IS ON DAMPER D-1 IS OPEN.
2. TEMPERATURE CONTROL
DURING HEATING MODE THE SPACE TEMPERATURE SENSED BY T-1 SHALL BE MAINTAINED AT SETPOINT BY DCP MODULATING V-1. DURING COOLING MODE THE COOLING
COIL LEAVING AIR TEMPERATURE SENSED BY T-3 SHALL BE MAINTAINED AT SETPOINT BY DCP BY MODULATING V-2, AND THE SPACE TEMPERATURE SENSED BY T-1 SHALL
BE MAINTAINED AT SETPOINT BY MODULATING V-3.
3. AIR FLOW CONTROL
THE SUPPLY FAN SHALL RUN AT CONSTANT SPEED PROVIDING CONSTANT AIR FLOW.
4. FREEZE PROTECTION
IF THE AIR TEMPERATURE AS SENSED BY T-2 FALLS BELOW 45F AN ALARM SIGNAL IS INDICATED AT THE DCP AND BMS. IF THIS TEMPERATURE FALLS BELOW 40F THE UNIT
SUPPLY FAN SHALL STOP, THE DAMPER D-1 SHALL CLOSE AND A CRITICAL ALARM SHALL BE INDICATED AT THE DCP AND BMS.
5. EMERGENCY SHUTDOWN/RESTART
WHEN SMOKE IS DETECTED BY THE DUCT MOUNTED SMOKE DETECTOR THE SUPPLY FAN SHALL SHUT OFF, DAMPER D-1 CLOSE AND AN ALARM SIGNAL SHALL BE
TRANSMITTED TO THE FIRE ALARM SYSTEM. SUPPLY FAN SHALL RESTART AND DAMPER D-1 SHALL OPEN WHEN THE FIRE ALARM CIRCUIT IS MANUALLY RESET.
*SEE NOTES
NOTES: AHU-1 AND AHU-2 WERE PROGRAMMED TO MATCH THE
EXISTING CSI CONTROLLERS PROGRAM. ABOVE SEQUENCE
WAS FROM ‘AHU-1 CLINICAL’ WHICH WAS THE SAME TYPE OF
UNIT. *SEE ASSOCIATED CONTROL DIAGRAM ON DRAWING
C-1A AND C-1C.
AS-BUILT REV. NEW DWG. / POINT TERM.1 12/10/13 DB
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