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Laurens Salon Suite B Plumbing Plan No. PLB 1406-00019 Page 2 July l7, 2014 4. A steam generator must have an approved high-hazard backflow preventer installed on its water supply(see Minnesota Rules,part 4715.2100). Since the possibility of back pressure exists,an RPZ backflow preventer must be installed. 5. It is recommended that a cleanout be provided where new waste and vent piping connects with existing plumbing to facilitate required testing of the new installation. 6. Verify that the existing water supply and waste systems are sized to accommodate the added fixtures(see Minnesota Rules,part 4715.3800 and part 4715.2310). 7. Showers and combination showers-baths shall be equipped with individual thermostatic, pressure balancing, or combination thermostatic and pressure-balancing control valves in accordance with ASSE 1016(see Minnesota Rules,part 4715.1380, subpart 5). The m�imum temperature setting must be set or adjusted in accordance with the standard and should not exceed 110 degrees F. 8. Valves shall be installed permitting the water supply to each room or individual fixture to be shut offwithout disrupting any other portion of the building(see Minnesota Rules,part 4715.1800, subpart 6). 9. Pipe hangers and supports shall comply with Minnesota Rules, part 4715.1430. 10. Plastic pipe must be installed in accordance with Minnesota Rules, part 4715.0550 through part 4715.0600. Above-grade horizontal runs cannot exceed 35 feet in total length. 11. Cross-link polyethylene(PEX)tubing must meet Minnesota Rules,part 4715.0520: a. The tubing system must comply with ASTM F877 and F876. b. When installed as a system in accordance with ASTM F877,the system tubing and fittings must be of the same manufacturer and be marked as required. c. When not installed as a system,the fittings must be marked with ASTM F1807,F1960, F2080, F2098-01,or F2159. The tubing must list the fitting and tubing standard. d. Installers must be factory trained and possess a card documenting completion of training. 12. The water distribution system shall be disinfected per Minnesota Rules,part 4715.2250. 13. The plumbing system shall be tested in accordance with Minnesota Rules,part 4715.2820. NOTE(S): 1. The scope of this project consists of remodeling an existing building. Installation includes a floor drain,a shower vaive, a steam generator,a hand sink,and two pedicure spas. 2. The building is served by existing municipal sewer and water services. 3. The plans and specifications were prepared by a licensed plumber. Only the plumber who has prepared the plans may use the plans for construction. If another plumber is contracted to install the plumbing,they must submit their own plans and specifications for the project.