SHEET SPECS MECH_JCN 21006911_Nome Boilers Project.pdf

MECHANICAL SPECIFICATIONS – NOME HOUSING COMPLEX BOILER REPLACEMENT

SUMMARY OF WORK:

1. DEMOLISH LEGACY MECHANICAL SYSTEMS AS SHOWN, SCHEDULED AND

SPECIFIED.

2. PROVIDE NEW MECHANICAL SYSTEMS AS SHOWN, SCHEDULED AND

SPECIFIED TO SUPPORT THE REPLACEMENT AND REDESIGN OF THE NOME

FAA HOUSING COMPLEX BOILER SYSTEM.

3. THE CONTRACTOR WILL MAINTAIN HEATING SERVICE TO ALL FAA AND NWS

SPACES TO THE GREATEST EXTENT POSSIBLE. CUTOVERS WILL BE

COORDINATED WITH THE FAA COR. HEATING OUTAGES MUST BE KEPT TO

MINIMUM DURATION. OCCUPIED SPACES WILL BE MAINTAINED AT A

TEMPERATURE OF 60 DEGREES OR GREATER DURING A CUTOVER.

CONTRACTOR WILL SUBMIT PROJECT SCHEDULE AND CUTOVER PHASING

PLAN TO BE AGREED UPON WITH FAA.

REGULATORY REQUIREMENTS

4. PROVIDE PLUMBING AND MECHANICAL SYSTEM IN COMPLIANCE WITH

THE FOLLOWING CODES AND STANDARDS AS ADOPTED/AMENDED BY THE

LOCAL AUTHORITY HAVING JURISDICTION:

A. 2021 INTERNATIONAL BUILDING CODE (IBC)

B. 2021 INTERNATIONAL MECHANICAL CODE (IMC)

C. 2021 UNIFORM PLUMBING CODE (UPC)

D. 2021 INTERNATIONAL FUEL GAS CODE (IFGC)

E. 2021 INTERNATIONAL FIRE CODE (IFC)

5. DESIGN GUIDELINES: AMERICAN SOCIETY OF HEATING,

REFRIGERATION AND AIR- CONDITONING ENGINEERS (ASHRAE)

GENERAL

6. PERFORM WORK IN ACCORDANCE WITH THE LATEST EDITIONS, REVISIONS,

OR AMENDMENTS OF APPLICABLE FEDERAL, STATE, AND LOCAL CODES AND

REGULATIONS. ALL MECHANICAL WORK SHALL COMPLY WITH IMC, NFPA,

AND NEC CODES.

7. FURNISH ALL LABOR EQUIPMENT, SUPPLIES, AND MATERIALS NECESSARY

TO PROVIDE COMPLETE AND OPERATIONAL SYSTEMS. NOTIFY FAA IN

WRITING OF ANTICIPATED DESIGN DEFICIENCIES.

8. THE CONTRACTOR SHALL FIELD VERIFY EXISTING CONDITIONS OF WORK

AND IS RESPONSIBLE FOR NOTIFYING THE CONTRACTING OFFICER'S

REPRESENTATIVE (COR) OF ANY DIFFERING FIELD CONDITIONS PRIOR TO THE

BEGINNING OF WORK.

9. CONTRACTOR IS RESPONSIBLE FOR THE PROTECTION OF EXISTING TO

REMAIN ELECTRICAL AND MECHANICAL EQUIPMENT FROM DAMAGE

DURING INSTALLATION OF NEW WORK.

10. MANUFACTURERS – ALL PRODUCTS, MATERIALS, AND EQUIPMENT SPECIFIED

IN THESE SPECIFICATIONS AND IN THE EQUIPMENT SCHEDULE ARE LISTED AS

BASIS-OF-DESIGN ONLY. PRODUCT SUBSTITUTIONS WHICH MEET THE

REQUIREMENTS OF THIS SECTION AND OTHER CONTRASCT DOCUMENTS ARE

ALLOWABLE WITH APPROVAL FROM THE FAA.

11. SUBMITTALS – SUBMIT PRODUCT DATA FOR SCHEDULED

EQUIPMENT AND PRODUCTS/MATERIALS LISTED IN THIS

SECTION.

DOMESTIC COLD WATER

A. ALL POTABLE WATER PIPING AND COMPONENTS MUST COMPLY WITH

NSF 14, NSF 61, AND NSF 372.

B. PIPING – HARD DRAWN COPPER TUBE, ASTM B88M TYPE L,

12. SOLDER-JOINT FITTINGS – ASTM B16.18 CAST COPPER ALLOY OR ASME

B16.22, WROUGHT COPPER, SOLDER-JOINT PRESSURE TYPE

13. PRESSURE FITTINGS – CAST-BRASS, CAST-BRONZE, OR WROUGHT COPPER

WITH EPDM O- RING SEAL IN EACH END. MINIMUM 200 PSIG WORKING-

PRESSURE RATING AT 250 DEG F.

14. FLANGES – BRONZE, ASME B16.24, CLASS 150, WITH SOLDER JOINT END.

FURNISH CLASS

300FLANGESIF REQUIREDTO MATCH PIPING.

15. UNIONS – MSS SP-123 CAST COPPER ALLOY, HEXAGONAL-STOCK BODY,

BALL-AND-SOCKET METAL-TO-METAL SEATING SURFACE. SOLDER-JOINT

OR THREADED ENDS.

16. GATE VALVES – BRONZE BODY WITH INTEGRAL SEAT AND SCREW-IN

BONNET. NON-RISING STEM, CLASS 125. MSS SP-80 TYPE 1.

17. BACKFLOW PREVENTION DEVICES – DOUBLE CHECK VALVE ASSEMBLY TYPE,

ASSE 1024

18. DRAIN VALVES – GATE VALVE TYPE, COPPER BODY, HOSE-THREAD END,

MSS SP-80 FOR GATE VALVES. CLASS 125 PRESSURE RATING.

19. INSULATION

A. PREFORMED CELLULAR GLASS INSULATION – TYPE II, CLASS 2 WITH

FACTORY APPLIED ASJ JACKET.

B. FLEXIBLE ELASTOMERIC – CLOSED-CELL, EXPANDED-RUBBER

MATERIAL, COMPLY WITH ASTM C534

HYDRONIC HEATING

20. PIPING – ALL PIPING SMALLER THAN 5” IN DIAMETER SHALL BE COPPER.

A. COPPER TUBE – HARD DRAWN COPPER TUBE, ASTM B88M TYPE L.

I. SOLDER-JOINT FITTINGS – ASTM B16.18 CAST COPPERALLOY OR

ASME B16.22, WROUGHT COPPER.

II. PRESSURE FITTINGS – CAST-BRASS, CAST-BRONZE, OR WROUGHT

COPPER WITH EPDM O-RINGS SEAL IN EACH END. MINIMUM 200PSIG

WORKING-PRESSURE RATING AT 250 DEG

21. FLANGES – BRONZE, ASME B16.24, CLASS 150, WITH SOLDER JOINTEND.

FURNISH CLASS 300 FLANGES IF REQUIRED TO MATCH PIPING

22. UNIONS – MSS SP 123 CAST-COPPER ALLOY, HEXAGONAL-STOCK BODY,

BALL-AND-SOCKET METAL-TO-METAL SEATING SURFACE. SOLDER JOINT OR

THREADED ENDS.

23. DIELECTRIC UNIONS – ASSE 1079, COPPER ALLOY AND FERROUS METAL

ASSEMBLY WITH SEPARATING NONCONDUCTIVE INSULATING MATERIAL.

MINIMUM PRESSURE RATING 125 PSIG AT 200 DEG F.

24. Y-STRAINERS – ASTM A126, CLASS B, CAST IRON BODY WITH BOLTED COVER

AND BOTTOM DRAIN CONNECTION. THREAD ENDS FOR SIZE NPS 2 AND

SMALLER. STAINLESS-STEEL 40- MESH STRAINER, OR PERFORATED

STAINLESS-STEEL BASKET. 125 PSIG COLD WATER PRESSURE RATING.

25. ISOLATION VALVES

A. GATE VALVES – ASMSE B16.1 TYPE FLANGED END IRON VALVE CLASS 125

OR HIGHER,

CWP RATING: 200 PSIG

B. BALL VALVES – MSS SP-110 BRASS OR BRONZE BODY, FULL PORT BALL

VALVESWITH THREADED OR PRESS END CONNECTIONS. CHROME

PLATED BRASS BALL WITH PTFE SEAT MATERIAL. MINIMUM

PRESSURE RATING OF 150 PSIG FOR SERVICE TEMPERATURES.

26. BALANCING VALVES – BRONZE BODY, BALL OR PLUG TYPE BALANCING

VALVE WITH CALIBRATED ORIFACE OR VENTURI. BRASS OR STAINLESS

STEEL BALL OR RESIN FOR PLUG TYPE. PTFE SEST MATERIAL. THREADED

CONNECTIONS, INTEGRAL SEALS FOR PRESSURE GAUGE CONNECTION.

HANDLE STYLE LEAVER WITH MEMORY STOP TO RETAIN SET POSITION.

MINIMUM 125 PSIG COLD WATER WORKING PRESSURE. MAXIMUM

OPERATING TEMPERATURE 250 DEG F.

27. CHECK VALVES – MSS SP-80, TYPE 3 BRONZE BODY SPRING CHECK VALVE

WITH BRONZE DOSC, CLASS 125, 200 PSIG COLD WATER PRESSURE

RATING.

28. AUTOMATIC AIR VENTS – BRONZE BODY, NON-FERROUS INTERNAL

COMPONENTS, NPS 1/2 INLET CONNECTION, NPS ¼ OUTLET CONNECTION. 150

PSIG COLD WATER PRESSURE RATING.

29. THERMOMETERS – ASME B40.200 BI-METAL, DIAL-TYPE, LIQUID-FILLED

THERMOMETER. NON-REFLECTIVE ALUMINUM 5” DIAL WITH ETCHED SCALE

MARKINGS IN DEG F. ACCURACY PLUS OR MINUS 1% OF MIDDLE HALF OF

SCALE RANGE.

30. PRESSURE GAUGES – ASME B40.100, DIRECT-MOUNTED, DIAL-TYPE GAUGE

WITH METAL CASE AND NON-REFLECTIVE 4-1/2” ALUMINUM DIAL WITH

ETCHED SCALE MARKINGS IN PSIG. BOURDON TUBE PRESSURE-ELEMENT

ASSEMBLY. GRADE A ACCURACY WITH PLUS OR MINUS 1% OF MIDDLE HALF

OF SCALE RANGE.

31. INSULATION – PREFORMED CELLULAR GLASS INSULATION – TYPE II, CLASS 2

WITH FACTORY APPLIED ASJ JACKET

VENTILATION AND EXHAUST

32. DUCT AND FITTINGS – GALVANIZED STEEL, UNLESS NOTED AS FLEX,

PROVIDE SMOOTH, EFFICIENT AIR FLOW. USE RADIUS BENDS WHERE

SHOWN, NOT SQUARE MITERS.

A. ROUND DUCT AND FITTINGS – 24 GAUGE THICKNESS MINIMUM, OR

26 GAUGE MINIMUM FOR SPIRAL PIPE AND FITTINGS.

B. ROUND FLEXIBLE – ACOUSTICAL FLEXIBLE AIR DUCT, FIRE-RATED.

MISCELLANEOUS

33. HANGERS AND SUPPORTS

A. PIPING – PROVIDE HANGERS AND SUPPORTS WITH SUFFICIENT STRENGTH

TO WITHSTAND ALL ANTICIPATED STATIC AND DYNAMIC LOADING

CONDITIONS ASSOCIATED WITH THE INTENDED USE. PIPE HANGERS IN

DIRECT CONTACT WITH THE PIPING SHALL BE OF APPROVED MATERIALS

THAT WILL NOT PROMOTE GALVANIC ACTION. ATTACH SUPPORTS TO

BUILDING CONSTRUCTION SO AS TO NOT ADVERSELY AFFECT THE

STRUCTURAL INTEGRITY OF THE BUILDING. SPACE SUPPORTS AT

INTERVALS IN ACCORDANCE WITH ANSI/MSS SP-58.

B. DUCTWORK – SUPPORT DUCT SYSTEMS IN ACCORDANCE WITH

SMACNA HVAC DUCT CONSTRUCTION STANDARDS FOR METAL AND

FLEXIBLE DUCTWORK.

34. SYSTEM IDENTIFICATION

A. EQUIPMENT LABELS – METAL OR PLASTIC LABELS WITH

MECHANICALLY ENGRAVED LETTERING. ABLE TO WITHSTAND

TEMPERATURES UP TO 160 DEF F. MINIMUM LABEL SIZE 2-1/2” BY ¾”.

SIZE LETTERING ACCORDING TO VIEWING DISTANCE, BUT NOT

SMALLER THAN ¼” TEXT HEIGHT.

B. PIPE AND DUCT LABELS – PRE-PRINTED, COLOR CODED, WITH LETTERING

INDICATING SERVICE AND SHOWING FLOW DIRECTION ACCORDING TO

ASME A13.1. SELF ADHESIVE TYPE.

35. PRESSURE TESTING – TEST INSTALLED PIPING FOR LEAKS

A. DOMESTIC WATER PIPING –TEST SECTIONS WITH AIR NOT LESS THAN 50 PSI.

B. HYDRONIC PIPING – TEST SECTIONS HYDROSTATICALLY WITH WATER

AT 100 PSI. THIS PRESSURE MAY EXCEED THE RATINGS OF CERTAIN

SECTIONS OF THE HYDRONIC SYSTEM. IN THESE CASES, TEST THOSE

PIPING SECTIONS AT THE MAXIMUM SYSTEM PRESSURE, 30 PSI. IN ALL

CASES, MAINTAIN PRESSURE IN THE SYSTEM FOR NO LESS THAN 15

MINUTES.

SEQUENCE OF OPERATIONS

36. DEVICES:

A. TC-100 – BOILER TEMPERATURE CONTROL

B. FC-100 - PUMP SEQUENCER BOILER SIDE [UNSURE IF REQUIRED]

C. FC-200 - PUMP SEQUENCER LOAD SIDE

D. FM-100A – FLOW METER FOR BOILER LOOP

E. FM-200A, B, C – FLOW METERS FOR LOAD LOOPS

F. TE-100A, B – TEMPERATURE ELEMENTS FOR BOILER LOOP

G. TE-200A, B, C - TEMPERATURE ELEMENTS FOR LOAD LOOP RETURN LINES

H. TE-200D – TEMPERATURE ELEMENT FOR LOAD LOOP SUPPLY

TEMPERATURE

I. TE-200E – TEMPERATURE ELEMENT FOR LOAD LOOP COMBINED RETURN

[UNSURE IF REQUIRED]

J. TI-100A, B, 200D, E – TEMPERATURE INDICATORS FOR THE BOILER SIDE (100)

AND LOAD LOOP SIDE (200)

K. PS-100A – PRESSURE SENSOR FOR BOILER LOOP

L. PS-200D, E – PRESSURE SENSORS FOR LOAD LOOP SUPPLY AND RETURN

37. BOILER PUMPS CP-1A AND CP-1B

A. BOILER PUMPS CP-1A AND CP-1B ARE LOCATED IN THE BOILER ROOM

AND RUN CONTINUOUSLY IN A PRIMARY/STAND-BY CONFIGURATION.

FC-100 ROTATES PUMPS IN AND OUT OF PRIMARY/STANDBY STATUS

PERIODICALLY TO ENSURE EQUAL RUN TIME. FLOW METER FM 100A

PROVIDES FLOW PROOF TO FLOW CONTROLLER (FC-100). IF SYSTEM

FLOW IS LOST, FC-100 AUTOMATICALLY ALTERNATES PUMP STATUS,

ENERGIZING THE STANDBY PUMP AND INITIATES A FAULT

NOTIFICATION.

38. CIRCULATION PUMPS CP-2A, 2B, 3A, 3B, 4A, AND 4B

A. CIRCULATION PUMPS CP-2A, 2B, 3A, 3B, 4A, AND 4B ARE ALSO LOCATED

IN THE BOILER ROOM AND RUN CONTINUOUSLY IN A PRIMARY/STAND-

BY CONFIGURATION IN THEIR RESPECTIVE PAIRS. FC-200 ROTATES

PUMPS IN AND OUT OF PRIMARY/STANDBY STATUS PERIODICALLY TO

ENSURE EQUAL RUN TIME, AND ADJUSTS PUMP SPEED BASED ON

READINGS FROM TEMPERATURE ELEMENTS TE-200A, B, AND C. FLOW

METER FM 200A, B, AND C PROVIDE FLOW PROOF TO FLOW

CONTROLLER (FC-200). IF SYSTEM FLOW IS LOST OR DOES NOT MATCH

THE EXPECTED FLOW RATE, FC-200 AUTOMATICALLY ALTERNATES

PUMP STATUS, ENERGIZING THE STANDBY PUMP TO THE APPROPRIATE

SPEED SETTING AND INITIATES A FAULT NOTIFICATION.

39. BOILER TEMPERATURE CONTROLLER TC-100

A. TC-100 MONITORS THE SUPPLY AND RETURN TEMPERATURES ON THE

BOILER LOOP ON EITHER SIDE OF THE HEAT EXCHANGER (TE-100A

SUPPLY, AND TE-100B RETURN)

B. ON CALL FOR HEAT, TC-100 STAGES BOILERS B-1, B-2, AND B-3 TO

MAINTAIN TARGET SUPPLY TEMPERATURE OR 180 DEGREES F

(MAXIMUM TEMPERATURE ADJUSTABLE) AS MEASURED BY TE-100A. TO

PREVENT SHORT CYCLING, TC-100 CYCLES BOILERS ON AND OFF BASED

ON A TEMPERATURE DIFFERENTIAL BETWEEN TE-100A, AND TE-100B.

THE TEMPERATURE DIFFERENTIAL CAN BE SET MANUALLY BY THE

OPERATOR OR AUTOMATICALLY SENSED.

C. LEAD/LAG OPERATION: DURING HEATING OPERATION, TC-100

OPERATES BOILERS B-1, B-2, AND B-3 IN A LEAD/LAG CONFIGURATION.

IF THE SET POINT TEMPERATURE CANNOT BE MET BY THE PRIMARY

BOILER, TC-100 WILL FIRE THE SECONDARY BOILER AFTER A STAGE

DELAY (USER DEFINED OR AUTOMATICALLY SENSED BY CONTROLLER.

D. OUTDOOR RESET: BOILER CONTROLLER TC-100 IS EQUIPPED WITH AN

OUTDOOR RESET FUNCTION USING TE-100EWHICH ADJUSTS THE

TARGET SUPPLY TEMPERATURE.