Amen02 dwg 60039115r1.pdf
PDF 460 KB Posted
- Attached to
- Repair By Replacement TC601 Federal contract opportunity
- Solicitation number
- N4008523R2850
About this file
This document contains mechanical drawings and specifications for a boiler plant controls system for a federal facility. Key details include specifications for a dual boiler plant with lead-lag control and variable frequency drives on secondary pumps for balancing. The system will provide hot water for heating and freeze protection below 38 degrees Fahrenheit. Alarms are specified for high and low supply temperatures, pump failures, and emergency gas shutoff. The related federal contract opportunity is a solicitation from the Department of the Navy to repair by replacement of a boiler plant controls system at Naval Facilities Engineering Command Contract Center TC601. The solicitation number and name of the project are provided.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Amen 07 Photos3of3.pdf | ||
| Amen07 Photos1of3.pdf | ||
| Amen07 Photos2of3.pdf | ||
| Amen07 220049.pdf | ||
| Amen06 Dwg SKS-1.pdf | ||
| Amen06 220049.pdf | ||
| Amen05 220049.pdf | ||
| Amen04 220049.pdf | ||
| Amen04 Spec 23 07 00r1.pdf | ||
| Amen04 dwg 60039100r2.pdf | ||
| Amen04 dwg 60039111r1.pdf | ||
| Amen03 220049.pdf | ||
| Amen02 220049.pdf | ||
| Amen02 220049.pdf | ||
| Amen02 dwg 60039105r1.pdf | ||
| Amen02 dwg 60039100r1.pdf | ||
| Amen01 220049.pdf | ||
| 22-0049 APPD.pdf | ||
| 22-0049 PIS.pdf | ||
| 22-0049 Design Analysis.pdf | ||
| 22-0049 Geotechnical Report.pdf | ||
| N4008522B0049 DRWGS.pdf | ||
| RFP 220049.pdf | ||
| N4008522B0049 SPECS.pdf |
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Text version
043801
TROY O. GRADY
SEAL
R
EENI GN
P R
OF E S S I ON
A
E
L
NO
RT H CAROL I NA
SEE DISCLOSURE OF INFORMATION STATEMENT ON SHEET G-001
2246 Yaupon Drive Wilmington, NC 28401
Phone: 910.791.4000 Fax: 910.791.5266 www.cbhfengineers.com NC# P-0506c Copyright 2023CBHF Engineers, PLLC
Engineers, PLLC
06-08-2023
151 Poole Rd. Suite 100 | Leland, NC, 28451
TEL (910) 383-1044 | FAX (910) 383-1045
www.capefearengineering.com | N.C. LICENSE # C-1621
M-802
MECHANICAL
CONTROLS
NOT TO SCALE1 BOILER PLANT CONTROLS
BOILER PLANT SEQUENCE OF OPERATION
AI
HWS
AI HOT WATER RETURN
TEMPERATURE
HOT WATER SUPPLY
TEMPERATURE
OUTSIDE AIR TEMPERATURE
HOT WATER PUMP 1
HOT WATER PUMP 2
BI
BO
BOILER 1
ENABLE/DISABLE
BOILER 1
ALARM
BOILER 1 CIRCULATING
PUMP
BOILER - 1
BI
BO
BOILER 2
ENABLE/DISABLE
BOILER 2
ALARM
BOILER 2 CIRCULATING
PUMP
BOILER - 2
AI
SECONDARY LOOP HOT WATER
PUMP 1 START/STOP
SECONDARY LOOP HOT WATER
PUMP 1 STATUS
BI
BO
HWR
HOT WATER SUPPLY TEMPERATURE
BY BOILER MANUFACTURER
WIRED TO BOILER 1
AI
AI
PLANT HW
FLOW METER
AI
PRIMARY HOT WATER
RETURN TEMPERATURE
AI
PRIMARY HOT WATER
SUPPLY TEMPERATURE
VFD
SECONDARY LOOP HOT WATER
PUMP 1 SPEED
AO
SECONDARY LOOP HOT WATER
PUMP 2 START/STOP
SECONDARY LOOP HOT WATER
PUMP 2 STATUS
BI
BO
VFD
SECONDARY LOOP HOT WATER
PUMP 2 SPEED
AO
PRIMARY-SECONDARY LOOP CONSTANT FLOW BOILER PLANT
GENERAL DESCRIPTION:
THE HOT WATER SYSTEM CONSISTS OF (2) BOILERS, THEIR ASSOCIATED CIRCULATION PUMPS AND TWO SECONDARY PUMPS. THE BUILDING AUTOMATION SYSTEM (BAS) CONTROLLER SHALL PROVIDE THE ENABLE SIGNAL TO THE BOILER PLANT AND THE START THE A SECONDARY PUMP. THE FACTORY BOILER CONTROLS SHALL PROVIDE CONTROL OF THE SUPPLY HEATING WATER TEMPERATURE SETPOINT (ADJ.) AND CONTROL THE BOILER'S CIRCULATION PUMP. ONLY TWO (2) BOILERS, THEIR CIRCULATION PUMPS AND (1) SECONDARY PUMP SHALL RUN
AT A TIME. VFD'S ON SECONDARY PUMPS MUST BE UTILIZED FOR BALANCING.
HEATING SYSTEM ENABLE/DISABLE:
THE HEATING SYSTEM SHALL BE ENABLED WHEN A DEFINABLE NUMBER (ADJ.) OF HOT WATER COILS NEED HEATING OR THE OUTSIDE AIR TEMPERATURE FALLS BELOW 60.0 DEG. F (ADJ.) OR ON A COMMAND FOR DEHUMIDIFICATION. WHEN ENABLED, THE BAS CONTROLLER SHALL START THE LEAD SECONDARY PUMP, AND ENABLE THE BOILER PLANT. THE BOILER FACTORY CONTROL SHALL OPERATE THE BOILERS INCLUDING THE
BOILER CIRCULATION PUMPS, TO MAINTAIN ITS LOCAL SUPPLY SETPOINT.
THE BOILERS SHALL RUN SUBJECT TO ITS OWN INTERNAL SAFETIES AND CONTROLS.
THE BOILER PLANT SHALL ALSO RUN FOR FREEZE PROTECTION WHENEVER THE OUTSIDE AIR TEMPERATURE IS
LESS THAN 38°F (ADJ.).
BOILER CONTROL:
THE TWO BOILERS SHALL OPERATE IN A LEAD/LAG FASHION WHEN CALLED TO RUN AND FLOW IS PROVEN. THE
BOILERS SHALL CONTROL ITS CIRCULATION PUMP.
· THE LEAD BOILER SHALL RUN FIRST. IF NEEDED THE BOILER FACTORY CONTROLS SHALL ENABLE THE LAG
BOILER TO MAINTAIN SETPOINT.
· ON FAILURE OF THE LEAD BOILER, THE STANDBY BOILER SHALL RUN AND THE LEAD BOILER SHALL TURN OFF.
IF THE HOT WATER DISTRIBUTION SYSTEM SUPPLY TEMPERATURE FALLS MORE THAN 25.0 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 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 AND
THIS SHALL RE-ENABLE THE LEAD/LAG SEQUENCE.
THE FACTORY BOILER CONTROLS SHALL ROTATE THE LEAD/LAG SEQUENCE OF THE BOILERS.
THE BAS SHALL ROTATE THE LEAD/STANDBY SEQUENCE OF THE SECONDARY PUMPS ON THE 1ST AND THE 15TH
OF EACH MONTH.
BOILER ALARMS SHALL BE PROVIDED AS FOLLOWS:
· FAILURE: COMMANDED ON BUT THE STATUS IS OFF.
· RUNNING IN HAND: COMMANDED OFF BUT THE STATUS IS ON.
· RUNTIME EXCEEDED: STATUS RUNTIME EXCEEDS A USER DEFINABLE LIMIT.
SECONDARY HOT WATER DISTRIBUTION PUMP LEAD/STANDBY OPERATION:
THE TWO HOT WATER PUMPS SHALL OPERATE IN A LEAD/STANDBY FASHION. THE LEAD PUMP SHALL RUN FIRST.
ON FAILURE OF THE LEAD PUMP, THE STANDBY PUMP SHALL RUN AND THE LEAD PUMP SHALL TURN OFF. THE
LEAD PUMP DESIGNATION SHALL BE ROTATED ON THE 1ST AND 15TH OF EACH MONTH.
SECONDARY HOT WATER DISTRIBUTION PUMP ALARMS SHALL BE PROVIDED AS FOLLOWS:
· FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.
· RUNNING IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.
· RUNTIME EXCEEDED: STATUS RUNTIME EXCEEDS A USER DEFINABLE LIMIT.
BOILER CIRCULATION PUMP 1:
THE CIRCULATION PUMP 1 SHALL RUN ANYTIME BOILER 1 IS CALLED TO RUN AND SHALL HAVE A USER DEFINABLE
DELAY (ADJ.) ON STOP.
ALARMS SHALL BE PROVIDED AS FOLLOWS:
· CIRCULATION PUMP 1 FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.
· CIRCULATION PUMP 1 RUNNING IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.
· CIRCULATION PUMP 1 RUNTIME EXCEEDED: STATUS RUNTIME EXCEEDS A USER-DEFINABLE LIMIT.
BOILER CIRCULATION PUMP 2:
THE CIRCULATION PUMP 2 SHALL RUN ANYTIME BOILER 2 IS CALLED TO RUN AND SHALL HAVE A USER DEFINABLE
DELAY (ADJ.) ON STOP.
ALARMS SHALL BE PROVIDED AS FOLLOWS:
· CIRCULATION PUMP 2 FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.
· CIRCULATION PUMP 2 RUNNING IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.
· CIRCULATION PUMP 2 RUNTIME EXCEEDED: STATUS RUNTIME EXCEEDS A USER-DEFINABLE LIMIT.
HOT WATER SUPPLY TEMPERATURE SETPOINT RESET:
THE FACTORY BOILER CONTROLS SHALL RESET THE HOT WATER SUPPLY TEMPERATURE SETPOINT BASED ON
OUTSIDE AIR TEMPERATURE.
AS OUTSIDE AIR TEMPERATURE RISES FROM 35°F (ADJ.) TO 70°F (ADJ.) THE HOT WATER SUPPLY TEMPERATURE SETPOINT SHALL RESET DOWNWARDS BY SUBTRACTING FROM 0°F (ADJ.) TO 30°F
(ADJ.) FROM THE CURRENT BOILER SETPOINT 130°F (ADJ.).
HOT WATER SUPPLY TEMPERATURE MONITORING:
· HOT WATER SUPPLY.
· HOT WATER RETURN.
ALARMS SHALL BE PROVIDED AS FOLLOWS:
HIGH HOT WATER SUPPLY TEMP: IF GREATER THAN 160°F (ADJ.).
LOW HOT WATER SUPPLY TEMP: IF LESS THAN 80°F (ADJ.).
FREEZE PROTECTION:
WHEN THE OUTDOOR AIR TEMPERATURE FALLS BELOW 38.0 DEG. F (ADJ.), THE HOT WATER DISTRIBUTION PUMP SHALL OPERATE CONTINUOUSLY TO PROVIDE HOT WATER CIRCULATION TO ALL ASSOCIATED HOT WATER COILS.
EMERGENCY GAS SHUTOFF:
IF THE EMERGENCY GAS SHUTOFF BUTTON IS ACTIVATED, THE NATURAL GAS VALVE SHALL CLOSE AND THE HOT WATER SYSTEM SHALL BE DISABLED. BUTTON SHALL BE HARD-WIRED TO SHUT OFF NATURAL GAS DELIVERY TO BOILER AND SEND A CONTROL SIGNAL TO THE BUILDING DDC SYSTEM TO GENERATE AN ALARM.
AI
OUTSIDE AIR TEMPERATURE
NOTE: HARDWIRE OUTDOOR AIR
TEMPERATURE SENSOR TO LEAD BOILER
BO
BP2 START/STOP
BO
BP1 START/STOP
BOILER POINTS LIST
HARDWARE POINTS SOFTWARE POINTS
POINT NAME AI AO BI BO AV BV LOOP SCHED TREND ALARM SHOW ON GRAPHIC
PLANT HOT WATER FLOW METER X X
PRIMARY HOT WATER RETURN TEMP X X
PRIMARY HOT WATER SUPPLY TEMP X X
HOT WATER RETURN TEMP X X X
HOT WATER SUPPLY TEMP X X X
BOILER 1 HOT WATER SUPPLY TEMP SETPOINT RESET X X X
BOILER 2 HOT WATER SUPPLY TEMP SETPOINT RESET X X X
BOILER 1 ENABLE X X
BOILER 2 ENABLE X X
BOILER 1 STATUS X X X
BOILER 2 STATUS X X X
BOILER 1 FLOW / CIRCULATION PUMP 1 STATUS X X X
BOILER 2 FLOW / CIRCULATION PUMP 2 STATUS X X X
CIRCULATION PUMP 1 START/STOP X X X
CIRCULATION PUMP 2 START/STOP X X X
HOT WATER PUMP 1 STATUS X X X
HOT WATER PUMP 2 STATUS X X X
HOT WATER PUMP 1 SPEED X X X
HOT WATER PUMP 2 SPEED X X X
HOT WATER PUMP 1 START/STOP X X
HOT WATER PUMP 2 START/STOP X X
OUTSIDE AIR TEMP X X
EMERGENCY SHUTDOWN X X X X
BOILER 1 FAILURE X
BOILER 1 HIGH HOT WATER SUPPLY TEMP X
BOILER 1 LOW HOT WATER SUPPLY TEMP X
BOILER 1 RUNNING IN HAND X
BOILER 1 RUNTIME EXCEEDED X
BOILER 2 FAILURE X
BOILER 2 HIGH HOT WATER SUPPLY TEMP X
BOILER 2 LOW HOT WATER SUPPLY TEMP X
BOILER 2 RUNNING IN HAND X
BOILER 2 RUNTIME EXCEEDED X
CIRCULATION PUMP 1 FAILURE X
CIRCULATION PUMP 1 RUNNING IN HAND X
CIRCULATION PUMP 1 RUNTIME EXCEEDED X
CIRCULATION PUMP 2 FAILURE X
CIRCULATION PUMP 2 RUNNING IN HAND X
CIRCULATION PUMP 2 RUNTIME EXCEEDED X
HIGH PRIMARY HOT WATER SUPPLY TEMP X
HOT WATER PUMP 1 FAILURE X
HOT WATER PUMP 1 RUNNING IN HAND X
HOT WATER PUMP 1 RUNTIME EXCEEDED X
HOT WATER PUMP 2 FAILURE X
HOT WATER PUMP 2 RUNNING IN HAND X
HOT WATER PUMP 2 RUNTIME EXCEEDED X
HIGH HOT WATER SUPPLY TEMP X
LOW HOT WATER SUPPLY TEMP X
BI
BOILER 2
FLOW
BI
BOILER 2
FLOW
HARDWIRED - EMERGENCY SHUT DOWNE
NOTE: BUTTON SHALL BE HARD-WIRED TO SHUT
OFF NATURAL GAS DELIVERY TO BOILER,
SHUTDOWN BOILERS AND SEND A CONTROL
SIGNAL TO THE BUILDING DDC SYSTEM TO
GENERATE AN ALARM.
1 REVISED PER RFI 02 08/08/2023
08/08/2023
| 2023-08-08T16:09:04-0400 | |
| Troy O Grady |
File details come from the government source that posted it. Updated .