THE JAMES RUSHTON EARLY LEARNING AND FAMILY SUCCESS CENTER #2616 ISSUE FOR CONSTRUCTION

Transcription

1 SECTION FIRE-SUPPRESSION SYSTEMS PART 1 - GENERAL 1.1 SUMMARY: A. This Section includes fire-suppression piping and equipment for the following building systems: 1. Wet-pipe, fire-suppression sprinklers, including piping, valves, specialties, and automatic sprinklers. 2. Dry-pipe, fire-suppression sprinklers, including piping, valves, specialties, automatic sprinklers, air compressor, and accessories. B. Work specified in this Section includes, but is not limited to providing the following: 1. Design and installation of a complete hydraulically calculated automatic wet or dry sprinkler system. 2. Provide sprinkler heads in all areas to insure required coverage per NFPA Piping layouts as required to meet NFPA 13 Standards. 4. Testing of system. 1.2 SYSTEM PERFORMANCE REQUIREMENTS: A. Design automatic sprinkler system and obtain approval from authorities having jurisdiction. B. Design sprinkler piping according to the following and obtain approval from authorities having jurisdiction: 1. Include 20 percent margin of safety for available water flow and pressure. 2. Include losses through water-service piping, valves, and backflow preventers. 3. Sprinkler Occupancy Hazard Classifications: As follows: a. Building Service Areas: Ordinary Hazard, Group 1. b. Electrical Equipment Rooms: Ordinary Hazard, Group 1. c. General Storage Areas (Stockpiles 10 ft or less): Ordinary Hazard, Group 2. d. Mechanical Equipment Rooms: Ordinary Hazard, Group 1. e. Office and Public Areas: Light Hazard. f. Kitchen Service Areas: Ordinary Hazard, Group 1. FIRE-SUPPRESSION SYSTEMS

2 4. System density and design areas shall be per NFPA 13 and based on occupancy designations listed above. 5. Sprinkler spacing shall be per NFPA 13 unless directed otherwise within the sprinkler listing or manufacturer s requirements. C. Components and Installation: Capable of producing piping systems with 175-psig minimum working-pressure rating, unless otherwise indicated. 1.3 SUBMITTAL: A. Submittal shall be made to the Architect at the same time it is made to the authority having jurisdiction and the insurance underwriter. B. Submit six (6) sets of shop drawings, indicating all phases of the installation, pipe routing, equipment layouts, elevations, sections and details to Architect for approval. The submittal shall include evidence that the shop drawings have been sent to other review authorities. Approvals from other authorities shall be provided to the Architect. Revisions shall be made for comments and resubmitted for approval. No work is to begin until approvals have been given in writing. C. Submit product data for the following: 1. Pipe and fitting materials and methods of joining piping. 2. Pipe hangers and supports. 3. Piping seismic restraints (as applicable). 4. Valves, including specialty valves, backflow preventers, accessories, and devices. 5. Alarm devices. 6. Air compressors and air maintenance devices. 7. Fire department connections. Include type; number, size, and arrangement of inlets; caps and chains; size and direction of outlet; escutcheon and marking; and finish. 8. Sprinklers, escutcheons, and guards. Include sprinkler flow characteristics, mounting, finish, and other pertinent data. D. Fire-Hydrant Flow Test Report: 1. A fire-hydrant flow test shall be performed by contractor as a basis for hydraulically calculated systems. Testing shall be conducted at a location representative of the actual future system supply and be no more than one year old at the date of submission. The flow test report shall have, as a minimum, the following information: a. Contractor s name, company, telephone number and address. b. Project name. c. Date, time and location of flow test. d. Static pressure (in pounds per square inch). e. Residual pressure (in pounds per square inch). FIRE-SUPPRESSION SYSTEMS (INTERIOR)

3 f. Flowing (in gallons per minute). g. Elevation of hydrant(s) tested. E. Approved Sprinkler Piping Drawings: Working plans, prepared according to NFPA 13, that have been approved by authorities having jurisdiction. Include hydraulic calculations, if applicable. F. Field Test Reports and Certificates: Indicate and interpret test results for compliance with performance requirements and as described in NFPA 13. Include "Contractor's Material and Test Certificate for Aboveground Piping" and "Contractor's Material and Test Certificate for Underground Piping." G. Maintenance Data: For each type of standpipe and sprinkler specialty to include in maintenance manuals specified in Division QUALITY ASSURANCE: A. Installer Qualifications: An experienced installer, licensed by the state in which the Project is located to install fire protection systems, who has designed and installed fire-suppression systems similar to that indicated for this Project and obtained design approval and inspection approval from authorities having jurisdiction. B. Contractor s Engineering Responsibility: Preparation of working plans, calculations, and field test reports by a qualified professional engineer. Base calculations on results of fire-hydrant flow test. C. Contractor s Professional Engineer Qualifications: A professional engineer who is legally qualified to practice in jurisdiction where Project is located and who is experienced in providing engineering services of the kind indicated. Engineering services are defined as those performed for installations of fire-suppression piping that are similar to those indicated for this Project in material, design, and extent. D. Manufacturer Qualifications: Firms whose equipment, specialties, and accessories are listed by product name and manufacturer in UL's "Fire Protection Equipment Directory" and FM's "Fire Protection Approval Guide" and that comply with other requirements indicated. E. Standpipe and Sprinkler Components: Listing/approval stamp, label, or other marking by a testing agency acceptable to authorities having jurisdiction. F. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction. 1.5 EXTRA MATERIALS: FIRE-SUPPRESSION SYSTEMS (INTERIOR)

4 A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. PART 2 - PRODUCTS 2.1 PIPES AND TUBES: 1. Sprinkler Cabinets: Finished, wall-mounting steel cabinet and hinged cover, with space for a minimum of six spare sprinklers plus sprinkler wrench. Include the number of sprinklers required by NFPA 13 and wrench for sprinklers. Include separate cabinet with sprinklers and wrench for each type of sprinkler on Project. A. Ductile-Iron Pipe: AWWA C151, mechanical-joint type; with cement-mortar lining and seal coat according to AWWA C104. Include gland, rubber gasket, and bolts and nuts according to AWWA C111. B. Schedule 10 Steel Pipe: ASTM A 135 or ASTM A 795, Schedule 10 in NPS 5 and smaller and NFPA 13 specified wall thickness in NPS 6 to NPS PIPE AND TUBE FITTINGS: A. Ductile-Iron Fittings: AWWA C110, ductile-iron or cast-iron type; or AWWA C153, ductile-iron, compact mechanical-joint type. Include cement-mortar lining and seal coat according to AWWA C104 and glands, rubber gaskets, and bolts and nuts according to AWWA C111. B. Ductile-Iron Fittings: ASTM A 47, malleable-iron or ASTM A 536, ductile-iron casting complying with AWWA pipe size; with ends factory grooved according to AWWA C606. C. Cast-Iron Threaded Fittings: ASME B16.4. D. Malleable-Iron Threaded Fittings: ASME B16.3. E. Steel, Threaded Couplings: ASTM A 865. F. Steel Welding Fittings: ASTM A 234/A 234M, ASME B16.9, or ASME B G. Steel Flanges and Flanged Fittings: ASME B16.5. H. Steel, Grooved-End Fittings: UL-listed and FM-approved, ASTM A 47, malleable iron or ASTM A 536, ductile iron; with dimensions matching steel pipe and ends factory grooved according to AWWA C JOINING MATERIALS: A. Ductile-Iron, Flanged Joints: AWWA C115, ductile-iron or gray-iron pipe flanges, rubber gaskets, and steel bolts and nuts. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

5 B. Steel, Keyed Couplings: UL 213 and AWWA C606, for steel-pipe dimensions. Include ASTM A 536, ductile-iron housing, rubber gaskets, and steel bolts and nuts. Include listing for dry-pipe service for couplings for dry piping. C. Transition Couplings: AWWA C219, sleeve type, or other manufactured fitting the same size as, with pressure rating at least equal to, and with ends compatible with piping to be joined. 2.4 FIRE PROTECTION SERVICE VALVES: A. General: UL listed and FM approved, with minimum 175-psig nonshock workingpressure rating. Valves for grooved-end piping may be furnished with grooved ends instead of type of ends specified. B. Gate Valves, NPS 2 and Smaller: UL 262; cast-bronze, threaded ends; solid wedge; OS&Y; and rising stem. C. Indicating Valves, NPS 2-½ and Smaller: UL 1091; butterfly or ball-type, bronze body with threaded ends; and integral indicating device. 1. Indicator: Visual. 2. Indicator: Electrical 115-V ac, prewired, single-circuit, supervisory switch. 3. Indicator: Electrical 115-V ac, prewired, two-circuit, supervisory switch. D. Gate Valves, NPS 2-½ and Larger: UL 262, iron body, bronze mounted, taper wedge, OS&Y, and rising stem. Include replaceable, bronze, wedge facing rings and flanged ends. E. Swing Check Valves, NPS 2 and Smaller: UL 312 or MSS SP-80, Class 150; bronze body with bronze disc and threaded ends. F. Swing Check Valves, NPS 2-½ and Larger: UL 312, cast-iron body and bolted cap, with bronze disc or cast-iron disc with bronze-disc ring and flanged ends. G. Split-Clapper Check Valves, NPS 4 and Larger: UL 312, cast-iron body with rubber seal, bronze-alloy discs, and stainless-steel spring and hinge pin. 2.5 SPECIALTY VALVES: A. Alarm Check Valves: UL 193, 250-psig working pressure; designed for horizontal or vertical installation, with cast-iron flanged inlet and outlet, bronze grooved seat with O-ring seals, and single-hinge pin and latch design. Valve trim shall be externally galvanized and have a maximum working pressure of 250- psig. Include trim sets for bypass, drain, electric sprinkler alarm switch, pressure gages, retarding chamber, and fill-line attachment with strainer. Valve shall be Viking Corp model J-1 or equal. 1. Option: Grooved-end connections for use with keyed couplings. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

6 2. Drip Cup Assembly: Pipe drain without valves, and separate from main drain piping. 3. Drip Cup Assembly: Pipe drain with check valve to main drain piping. B. Ball Drip Valves: UL 1726, automatic drain valve, NPS 3/4, ball check device with threaded ends. 2.6 SPRINKLERS: A. General: 1. Store sprinkler system components in their original shipping container, in a clean, dry space protected from weather. Until completion of all finishout, protective caps shall not be removed from concealed sprinklers or cover plates installed. Any painted sprinklers or cover plates shall be replaced. 2. Fire sprinklers shall be of one manufacturer throughout the building. No mixing of sprinkler brands shall be permitted. Sprinklers shall be of all brass frame construction utilizing a metal Belleville spring seal, coated on both sides with Teflon film. Utilization of non-metal parts in the sealing portion of the sprinkler is strictly prohibited. B. Automatic Sprinklers: With heat-responsive element complying with the following: 1. UL UL 1767, for early suppression, fast-response applications. C. Sprinkler Types and Categories 1. Upright or Pendent: Viking Microfast (Quick Response). 2. Recessed Pendent: Viking Microfast (Quick Response) with Model E-1 or E-2 recessed escutcheon. 3. Concealed Pendent: Viking Horizon Mirage (Quick Response). 4. Standard Coverage Sidewall: Viking Microfast (Quick Response). 5. Extended Coverage Sidewall: Viking Microfast (Quick Response). 6. Concealed Sidewall: Viking QR Concealed HSW, Model VK408. D. Sprinkler Escutcheons: Materials, types, and finishes for the following sprinkler mounting applications. Escutcheons for concealed, flush, and recessed-type sprinklers are specified with sprinklers. Concealed sprinklers shall have a cover plate that is a push-on, thread-off design that allows for up to ½" of adjustment and have a diameter no greater than 2-3/4". 1. Ceiling Mounting: Chrome-plated steel, one piece, flat. 2. Ceiling Mounting: Chrome-plated steel, two piece, with 1-inch vertical adjustment. 3. Sidewall Mounting: Chrome-plated steel, one piece, flat. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

7 E. Sprinkler Guards: Wire-cage type, including fastening device for attaching to sprinkler. 2.7 SPECIALTY SPRINKLER FITTINGS: A. Specialty Fittings: UL listed and FM approved; made of steel, ductile iron, or other materials compatible with piping. B. Dry-Pipe-System Fittings: UL listed for dry-pipe service. C. Drop-Nipple Fittings: UL 1474, with threaded inlet, threaded outlet, and seals; adjustable. D. Sprinkler, Drain and Alarm Test Fittings: UL-listed, cast- or ductile-iron body; with threaded inlet and outlet, test valve, and orifice and sight glass. E. Sprinkler, Branch-Line Test Fittings: UL-listed, brass body; with threaded inlet and capped drain outlet and threaded outlet for sprinkler. F. Sprinkler, Inspector's Test Fittings: UL-listed, cast- or ductile-iron housing; with threaded inlet and drain outlet and sight glass. 2.8 FIRE DEPARTMENT CONNECTIONS: A. Wall, Fire Department Connections: UL 405; cast-brass body with brass, wall, escutcheon plate; brass, lugged caps with gaskets and brass chains; and brass, lugged swivel connections. Include inlets with threads according to NFPA 1963 and matching local fire department sizes and threads, outlet with pipe threads, extension pipe nipples, check devices or clappers for inlets, and escutcheon plate with permanent descriptive marking appropriate to system served. 2.9 ALARM DEVICES: 1. Mounting: flush or exposed projecting mounting as indicated on plans. 2. Escutcheon Plate: round, square or rectangular. 3. Finish: Polished brass. A. General: Types matching piping and equipment connections. B. Electronic Water Flow Alarm: Alarm shall be Potter Electric Horn Strobe Model SASH-120, 120 VAC or equal by system sensor. C. Water-Flow Indicators: UL 346; electrical-supervision, vane-type water-flow detector; with 250-psig pressure rating; and designed for horizontal or vertical installation. Include two single-pole, double-throw, circuit switches for isolated alarm and auxiliary contacts, 7 A, 125-V ac and 0.25 A, 24-V dc; complete with factory-set, field-adjustable retard element to prevent false signals and tamperproof cover that sends signal if removed. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

8 D. Pressure Switches: UL 753; electrical-supervision-type, water-flow switch with retard feature. Include single-pole, double-throw, normally closed contacts and design that operates on rising pressure and signals water flow. E. Valve Supervisory Switches: UL 753; electrical; single-pole, double throw; with normally closed contacts. Include design that signals controlled valve is in other than fully open position PRESSURE GAGES: A. Pressure Gages: UL 393, 3-1/2- to 4-1/2-inch diameter dial with dial range of 0 to 250 psig. PART 3 - EXECUTION 3.1 EXAMINATION: A. Examine roughing-in for hose connections and stations to verify actual locations of piping connections before installation. B. Examine walls and partitions for suitable thickness, fire- and smoke-rated construction, framing for hose-station cabinets, and other conditions where hose connections and stations are to be installed. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PIPING APPLICATIONS: A. Do not use welded joints with galvanized steel pipe. B. All steel piping used for dry pipe systems shall be hot-dipped galvanized. C. Flanges, unions, and transition and special fittings with pressure ratings the same as or higher than system's pressure rating may be used in aboveground applications, unless otherwise indicated. D. Piping between Fire Department Connections and Check Valves: Use galvanized, standard-weight steel pipe with grooved ends; steel, grooved-end fittings; steel, keyed couplings; and grooved joints. E. Underground Service-Entrance Piping: 1. Ductile-iron, mechanical-joint pipe and fittings and restrained joints. 2. Ductile-iron, grooved-end pipe and fittings; ductile-iron, keyed couplings; and grooved joints. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

9 F. Standpipes: Use the following: 1. NPS 4 - NPS 8: a. Standard-weight steel pipe with grooved ends; steel, grooved-end fittings; steel, keyed couplings; and grooved joints. b. Standard-weight steel pipe with plain ends, steel welding fittings, and welded joints. c. Galvanized, standard-weight steel pipe with grooved ends; steel, grooved-end fittings; steel, keyed couplings; and grooved joints. d. Schedule 10 steel pipe with roll-grooved ends; steel, grooved-end fittings; and grooved joints. G. Wet-Pipe Sprinklers: Use the following: 1. Sprinkler-Piping Option: Specialty sprinkler fittings, NPS 2 and smaller, including mechanical-t fittings, may be used downstream from sprinkler zone valves. 2. NPS 2 - NPS 6 a. Standard-weight steel pipe with threaded ends, cast- or malleableiron threaded fittings, and threaded joints. b. Standard-weight steel pipe with plain ends, steel welding fittings, and welded joints. c. Galvanized, standard-weight steel pipe with threaded ends; castor malleable-iron threaded fittings; and threaded joints. H. Dry-Pipe Sprinklers: Use the following: 1. NPS 2 - NPS VALVE APPLICATIONS: a. Standard-weight steel pipe with threaded ends, cast- or malleableiron threaded fittings, and threaded joints. b. Standard-weight steel pipe with plain ends, steel welding fittings, and welded joints. c. Galvanized, standard-weight steel pipe with threaded ends; castor malleable-iron threaded fittings; and threaded joints. A. Drawings indicate valve types to be used. Where specific valve types are not indicated, the following requirements apply: FIRE-SUPPRESSION SYSTEMS (INTERIOR)

10 1. Fire-Protection-Service Valves: UL listed and FM approved for applications where required by NFPA 13. a. Shutoff Duty: Use indicating OS & Y valves. 2. General-Duty Valves: For applications where UL-listed and FM-approved valves are not required by NFPA JOINT CONSTRUCTION: a. Shutoff Duty: Use ball or butterfly valves. b. Throttling Duty: Use globe, ball, or butterfly valves. A. Ductile-Iron-Piping, Grooved Joints: Use ductile-iron pipe with radius-cutgrooved ends; ductile-iron, grooved-end fittings; and ductile-iron, keyed couplings. Assemble joints with couplings, gaskets, lubricant, and bolts according to coupling manufacturer's written instructions. B. Steel-Piping, Grooved Joints: Use Schedule 40 steel pipe with cut or rollgrooved ends and Schedule 30 or thinner steel pipe with roll-grooved ends; steel, grooved-end fittings; and steel, keyed couplings. Assemble joints with couplings, gaskets, lubricant, and bolts according to coupling manufacturer's written instructions. Use gaskets listed for dry-pipe service for dry piping. C. Dissimilar-Piping-Material Joints: Construct joints using adapters or couplings compatible with both piping materials. Use dielectric fittings if both piping materials are metal. Refer to Division 15 Section "Basic Materials and Methods" for dielectric fittings. 3.5 SERVICE ENTRANCE PIPING: A. Connect standpipe and sprinkler piping to water-service piping of size and in location indicated for service entrance to building. Refer to Division 2 for exterior piping. B. Install shutoff valve, backflow preventer, pressure gage, drain, and other accessories indicated at connection to water-service piping. Refer to Division 2 for backflow preventers. C. Install shutoff valve, check valve, pressure gage, drain, and other accessories at connection to water service. 3.6 PIPING INSTALLATION: A. Locations and Arrangements: Drawing plans, schematics, and diagrams indicate general location and arrangement of piping. They do not show all changes in direction, elevation or offsets necessary for complete installation. Install piping as indicated, as far as practical. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

11 1. Deviations from approved working plans for piping require written approval from authorities having jurisdiction. File written approval with Architect before deviating from approved working plans. B. Install underground service-entrance piping according to NFPA 24 and with restrained joints. C. Use approved fittings to make changes in direction, branch takeoffs from mains, and reductions in pipe sizes. D. Install unions adjacent to each valve in pipes NPS 2 and smaller. Unions are not required on flanged devices or in piping installations using grooved joints. E. Install flanges or flange adapters on valves, apparatus, and equipment having NPS 2-½ and larger connections. F. Install "Inspector's Test Connections" in sprinkler piping, complete with shutoff valve, sized and located according to NFPA 13. G. Install sprinkler piping with drains for complete system drainage. H. Install sprinkler zone control valves, test assemblies, and drain risers adjacent to standpipes when sprinkler piping is connected to standpipes. I. Install drain valves on standpipes. J. Install ball drip valves to drain piping between fire department connections and check valves. Drain to floor drain or outside building. K. Install alarm devices in piping systems. L. Hangers and Supports: Comply with NFPA 13 for hanger materials. Install according to NFPA 13 for sprinkler piping. M. Install piping with grooved joints according to manufacturer's written instructions. Construct rigid piping joints, unless otherwise indicated. N. Install pressure gages on riser or feed main, at each sprinkler test connection, and at top of each standpipe. Include pressure gages with connection not less than NPS 1/4 and with soft metal seated globe valve, arranged for draining pipe between gage and valve. Install gages to permit removal, and install where they will not be subject to freezing. 3.7 SPECIALTY SPRINKLER FITTING INSTALLATION: A. Install specialty sprinkler fittings according to manufacturer's written instructions. 3.8 VALVE INSTALLATION: FIRE-SUPPRESSION SYSTEMS (INTERIOR)

12 A. O S & Y Valves: Install fire-protection-service valves supervised-open, located to control sources of water supply except from fire department connections. Provide permanent identification signs indicating portion of system controlled by each valve. B. Install check valve in each water-supply connection. Install backflow preventers instead of check valves in potable-water supply sources. C. Alarm Check Valves: Install valves in vertical position for proper direction of flow, including bypass check valve and retard chamber drain-line connection. 3.9 SPRINKLER APPLICATIONS: A. General: Use sprinklers according to the following applications unless noted otherwise: 1. Rooms without Ceilings: Upright and pendent sprinklers, as indicated. 2. Rooms with Suspended Ceilings: Pendent, recessed, flush, and concealed sprinklers, as indicated. 3. Wall Mounting: Sidewall sprinklers. 4. Spaces Subject to Freezing: Upright; dry pendent and dry sidewall. 5. Special Applications: Use extended-coverage and quick-response sprinklers where indicated. 6. Sprinkler Finishes: Use sprinklers with the following finishes: 3.10 SPRINKLER INSTALLATION: a. Upright, Pendent, and Sidewall Sprinklers: Chrome-plated in finished spaces exposed to view; rough bronze in unfinished spaces not exposed to view; wax coated where exposed to acids, chemicals, or other corrosive fumes. b. Concealed Sprinklers: Rough brass, with factory-painted white cover plate. c. Flush Sprinklers: Bright chrome, with painted white escutcheon. A. Install sprinklers in accordance with manufacturer s listing. B. Install sprinklers in suspended ceilings in center of acoustical panels and tiles. C. Install sprinklers in suspended ceilings in center of narrow dimension of acoustical panels. FIRE-SUPPRESSION SYSTEMS (INTERIOR)

13 D. Do not install pendent or sidewall, wet-type sprinklers in areas subject to freezing. Use dry-type sprinklers with water supply from heated space CONNECTIONS: A. Connect water supplies to standpipes and sprinklers. Include backflow preventers. B. Install ball drip valves at each check valve for fire department connection. Drain to floor drain or outside building. C. Connect piping to specialty valves, hose valves, specialties, fire department connections, and accessories. D. Electrical Connections: Power wiring is specified in Division 26. E. Connect alarm devices to fire alarm LABELING AND IDENTIFICATION: A. Install labeling and pipe markers on equipment and piping according to requirements in NFPA FIELD QUALITY CONTROL: A. Flush, test, and inspect sprinkler piping according to NFPA 13, "System Acceptance" Chapter. B. Flush, test, and inspect standpipes according to NFPA 14, "Tests and Inspection" Chapter. C. Replace piping system components that do not pass test procedures and retest to demonstrate compliance. Repeat procedure until satisfactory results are obtained. D. Report test results promptly and in writing to Architect and authorities having jurisdiction CLEANING: A. Clean dirt and debris from sprinklers. B. Remove and replace sprinklers having paint other than factory finish PROTECTION: A. Protect sprinklers from damage until all finish-out operations have been completed TESTING AND STARTUP: FIRE-SUPPRESSION SYSTEMS (INTERIOR)

14 A. Verify that specialty valves, trim, fittings, controls, and accessories are installed and operate correctly. B. Verify that specified tests of piping are complete. C. Verify that damaged sprinklers and sprinklers with paint or coating not specified are replaced with new, correct type. D. Verify that sprinklers are correct types, have correct finishes and temperature ratings, and have guards as required for each application. E. Verify that potable-water supplies have correct types of backflow preventers. F. Drain dry-pipe sprinkler piping. G. Verify that fire department connections have threads compatible with local fire department equipment. H. Fill wet-pipe sprinkler piping with water. I. Energize circuits to electrical equipment and devices. J. Adjust operating controls and pressure settings. K. Coordinate with fire alarm tests. Operate as required DEMONSTRATION: A. Demonstrate equipment, specialties, and accessories. Review operating and maintenance information. B. Schedule demonstration with Owner with at least seven days' advance notice. END OF SECTION FIRE-SUPPRESSION SYSTEMS (INTERIOR)