232113 HYDRONIC PIPING.pdf

02-01-20

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SECTION 23 21 13

HYDRONIC PIPING

PART 1 - GENERAL

1.1 DESCRIPTION

A. Water piping to connect HVAC equipment, including the following:

1. Chilled water, condenser water, heating hot water and drain piping.

2. Extension of domestic water make-up piping for HVAC systems.

3. Glycol-water piping.

B. A complete listing of common acronyms and abbreviations are included in //Section 23 05 10, COMMON WORK RESULTS FOR BOILER PLANT AND STEAM

GENERATION// //Section 23 05 11, COMMON WORK RESULTS FOR HVAC//.

1.2 RELATED WORK

A. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Section 23 57 33, HEAT TRANSFER FLUID AND EQUIPMENT.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. Where conflicts occur these specifications and the VHA standard will govern.

B. American Society of Mechanical Engineers (ASME):

B1.20.1-//2013//........Pipe Threads, General Purpose (Inch)

B16.22-//2018//.........Wrought Copper and Copper Alloy Solder-Joint

Pressure Fittings

B31.9-//2014//..........Building Services Piping

B40.100-//2013//........Pressure Gauges and Gauge Attachments

C. American Society for Testing and Materials (ASTM):

F439-//2019//...........Standard Specification for Chlorinated Poly

(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 23 21 13, HYDRONIC PIPING”, with applicable paragraph identification.

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C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Pipe and equipment supports.

2. Pipe and tubing, with specification, class or type, and schedule.

3. Pipe fittings, including miscellaneous adapters and special fittings.

4. Couplings and fittings.

5. Flexible connectors for water service.

D. As-Built Piping Diagrams.

1. One wall-mounted stick file with complete set of prints. Mount stick file in the Basement MER.

2. One complete set of reproducible drawings.

3. One complete set of drawings in electronic AutoCAD and pdf format.

1.5 QUALITY ASSURANCE

A. All couplings, fittings, valves, and specialties shall be the products of a single manufacturer.

1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. The installing contractor shall maintain as-built drawings Provide record drawings as follows:

1. As-built drawings are to be provided, with a copy of them on AutoCAD provided on CD or DVD. The CAD drawings shall use multiple line layers with a separate individual layer for each system.

1.7 NOT USED

A.

PART 2 - PRODUCTS

2.1 PIPE SUPPORTS

A. Provide in accordance with ANSI B31.1, MSS SP-58, SP-69 & SP-89.

2.2 PIPE AND TUBING

A. Heating Hot Glycol-Water

1. Copper water tube option: ASTM B88, Type L, hard drawn.

B. Pipe supports, including insulation shields.

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2.3 NOT USED

2.4 FITTINGS FOR COPPER TUBING

A. Joints:

1. Solder Joints: Joints shall be made up in accordance with recommended practices of the materials applied. Apply 95/5 tin and antimony on all copper piping.

B. Fittings: ASME B16.18 cast copper or ASME B16.22 solder wrought copper.

2.5 NOT USED

A. Schedule 40, socket type for solvent welding.

B. Schedule 40 PVC drain piping: Drainage pattern.

C. Chemical feed piping for condenser water treatment: CPVC, Schedule

80, ASTM F439.

2.6 DIELECTRIC FITTINGS

A. Provide where copper tubing and ferrous metal pipe are joined.

B. 50 mm (2 inches) and Smaller: Threaded dielectric union, ASME B16.39.

C. Temperature Rating, 99 degrees C (210 degrees F).

2.7 SCREWED JOINTS

A. Pipe Thread: ASME B1.20.1.

B. Lubricant or Sealant: Oil and graphite or other compound approved for the intended service.

2.8 NOT USED

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2.9 NOT USED

2.10 NOT USED

2.11 NOT USED

2.12 NOT USED

2.13 NOT USED

2.14 NOT USED

2.15 NOT USED

2.16 NOT USED

2.17 NOT USED

2.18 NOT USED

2.19 NOT USED

PART 3 - EXECUTION

3.1 GENERAL

A. If an installation is unsatisfactory to the COR, the Contractor shall correct the installation at no additional cost or time to the

Government.

B. Store materials to avoid excessive exposure to weather or foreign materials. Keep inside of piping relatively clean during installation and protect open ends when work is not in progress.

C. Support piping securely.

D. Locate and orient valves to permit proper operation and access for maintenance of packing, seat and disc. Generally, locate valve stems in overhead piping in horizontal position. Provide a union adjacent to one end of all threaded end valves.

E. Offset equipment connections to allow valving off for maintenance and repair with minimal removal of piping.

F. Provide manual air vent at high point. Install piping to floor drains from all automatic air vents.

G. Connect piping to equipment as shown on the drawings.

3.2 PIPE JOINTS

A. Screwed: Threads shall conform to ASME B1.20.1; joint compound shall be applied to male threads only and joints made up so no more than three threads show. Coat exposed threads on steel pipe with joint compound, or red lead paint for corrosion protection.

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3.3 NOT USED

3.4 NOT USED

3.5 LEAK TESTING ABOVEGROUND PIPING

A. Inspect all joints and connections for leaks and workmanship and make corrections as necessary, to the satisfaction of the COR. Tests may be either of those below, or a combination, as approved by the COR.

B. An operating test at design pressure, and for hot systems, design maximum temperature.

C. A hydrostatic test at 1.5 times design pressure. For water systems, the design maximum pressure would usually be the static head, or glycol make-up system maximum pressure. factory tested equipment

(convertors, exchangers, coils, etc.) need not be field tested.

Isolate equipment where necessary to avoid excessive pressure on mechanical seals and safety devices.

3.6 FLUSHING AND CLEANING PIPING SYSTEMS

A. Initial Flushing: Flush out loose dirt, mill scale, metal chips, rust, and like deleterious substances with water until clean without damage to any system component.

B. Final Flushing: Return systems to conditions required by initial flushing after all dirt and debris has been displaced by clean water.

Flush all dead ends and isolated clean equipment. Gently operate all valves to dislodge any debris in valve body by throttling velocity.

Flush for not less than one hour.

3.7 NOT USED

3.8 NOT USED

3.9 STARTUP AND TESTING

A. Perform tests as recommended by product manufacturer and listed standards and under actual or simulated operating conditions and prove full compliance with design and specified requirements. Tests of the various items of equipment shall be performed simultaneously with the system of which each item is an integral part.

B. When any defects are detected, correct defects and repeat test at no additional cost or time to the Government.

3.10 NOT USED

3.11 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s trained technical representative for 4 hours to instruct each VA personnel responsible in operation and maintenance of the system.

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