IAPMO IGC PUBLIC REVIEW DRAFT Recirculating Shower Systems

Transcription

1 IAPMO IGC PUBLIC REVIEW DRAFT Recirculating Shower Systems

2 IAPMO Standard IAPMO IGC Published: August 2017 Previous Editions: August 2017, May 2016 Published by International Association of Plumbing and Mechanical Officials (IAPMO) East Philadelphia Street, Ontario, California, 91761, USA Visit the IAPMO Online Store at: Visit the IAPMO Standards website at: Copyright by International Association of Plumbing and Mechanical Officials (IAPMO) All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America

3 IAPMO Notes (1) The use of the singular does not exclude the plural (and vice versa) when the sense allows. (2) The use of IAPMO Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. (3) This standard was developed using an open process and in accordance with IAPMO Standards Policy S 001, Standards Development Process, which is available on the IAPMO Standards website ( (4) During its development, this Standard was made available for public review, thus providing an opportunity for additional input from stakeholders from industry, academia, regulatory agencies, and the public at large. Upon closing of public review, all comments received were duly considered and resolved by the IAPMO Standards Review Committee. (5) This Standard was developed in accordance with the principles of consensus, which is defined as substantial agreement; consensus implies much more than a simple majority, but not necessarily unanimity. It is consistent with this definition that a member of the IAPMO Standards Review Committee might not be in full agreement with all sections of this Standard. (6) Although the intended primary application of this Standard is stated in its scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose. (7) IAPMO Standards are subject to periodic review and suggestions for their improvement will be referred to the IAPMO Standards Review Committee. To submit a proposal for change to this Standard, you may send the following information to the International Association of Plumbing and Mechanical Officials, Attention Standards Department, at standards@iapmostandards.org or, alternatively, at East Philadelphia Street, Ontario, California, 91761, and include Proposal for change in the subject line: (a) standard designation (number); (b) relevant section, table, or figure number, as applicable; (c) wording of the proposed change, tracking the changes between the original and the proposed wording; and (d) rationale for the change. (8) Requests for interpretation should be clear and unambiguous. To submit a request for interpretation of this Standard, you may send the following information to the International Association of Plumbing and Mechanical Officials, Attention Standards Department, at standards@iapmostandards.org or, alternatively, at East Philadelphia Street, Ontario, California, 91761, and include Request for interpretation in the subject line: (a) the edition of the standard for which the interpretation is being requested; (b) the definition of the problem, making reference to the specific section and, when appropriate, an illustrative sketch explaining the question; (c) an explanation of circumstances surrounding the actual field conditions; and (d) the request for interpretation phrased in such a way that a yes or no answer will address the issue. (9) Attention is drawn to the possibility that some of the elements of this Standard may be the subject of patent rights. IAPMO is not to be held responsible for identifying any or all such patent rights. Users of this Standard are expressly advised that determination of the validity of any such patent rights is entirely their responsibility. (10) IAPMO does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this Standard, and does not undertake to insure anyone utilizing this Standard against liability for infringement of any applicable patents, nor assumes any such liability. Users of this Standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their responsibility. (11) Participation by federal or state agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this Standard. August 2017November 9, 2018 PUBLIC REVIEW DRAFT i

4 IAPMO IGC Scope 1.1 Scope This Standard covers portable and stationary recirculating shower systems intended for new and retrofit residential, and commercial, RV and trailer applications and specifies requirements for materials, physical characteristics, performance testing, and markings Recirculating shower systems covered by this standard, as shown in Figure 1 and Figure 2, may operate in (a) recirculating mode, which recycles shower water for reuse; or, (b) conventional mode, which doesn t recirculate shower water Shower systems covered by this Standard may be manufactured with plastic and/or glass pressuresealed walls, a showerhead, a shower panel with handheld showerhead, and a shower pan with water filtering and electrical recirculating components. These systems can include (a) factory installed supply and waste fittings; (b) factory formed shower thresholds; and (c) factory installed shower walls and/or panels. 1.2 Alternative Materials The requirements of this Standard are not intended to prevent the use of alternative materials or methods of construction provided such alternatives meet the intent and requirements of this Standard. 1.3 Terminology In this Standard, (a) shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard; (b) should is used to express a recommendation, but not a requirement; (c) may is used to express an option or something permissible within the scope of the Standard; and (d) can is used to express a possibility or a capability. Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separate explanatory or informative material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements. 1.4 Units of Measurement SI units are the primary units of record in global commerce. In this Standard, the inch/pound units are August 2017November 9, 2018 PUBLIC REVIEW DRAFT 1

5 shown in parentheses. The values stated in each measurement system are equivalent in application, but each unit system is to be used independently. All references to gallons are to U.S. gallons. 1.5 Amendments Proposals for amendments to this Standard will be processed in accordance with the standardswriting procedures of IAPMO. 1.6 Patents The user s attention is called to the possibility that compliance with this Standard may require use of an invention covered by patent rights. By publication of this Standard, no position is taken with respect to the validity of any such claim(s) or of any patent rights in connection therewith. If a patent holder has filed a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license, then details can be obtained from IAPMO. 2 Reference Publications This Standard refers to the following publications, and where such reference is made, it shall be to the current edition of those publications, including all amendments published thereto. ASME A ASME A ASME A ASME A ASME B16.18 ASME B16.22 ASME A /CSA B125.1 ASME A /CSA B125.2 ASME A /CSA B125.6 ASME A /CSA B45.4 ASSE 1001 ASSE 1012 ASSE 1013 ASSE 1020 ASSE 1056 ASSE 1061 Air Gaps in Plumbing Systems Air Gap Fittings for Use with Plumbing Fixtures, Appliances, and Appurtenances Floor and Trench Drains Bathtubs/Whirlpool Bathtubs with Pressure Sealed Doors Cast Copper Alloy Solder Joint Pressure Fittings Wrought Copper and Copper Alloy Solder Joint Pressure Fittings Plumbing supply fittings Plumbing waste fittings Flexible water connectors Stainless steel plumbing fixtures Performance Requirements for Atmospheric Type Vacuum Breakers Performance Requirements for Backflow Preventers with Intermediate Atmospheric Vent Reduced Pressure Principle Backflow Preventers and Reduced Pressure Principle Fire Protection Backflow Preventers Pressure Vacuum Breaker Assembly Spill Resistant Vacuum Breaker Assemblies Performance requirements for Push Fit Fittings ASSE 1016/ASME A /CSA B Performance requirements for automatic compensating valves for individual showers and tub/shower combinations August 2017November 9, 2018 PUBLIC REVIEW DRAFT 2

6 ASTM B88 Standard Specification for Seamless Copper Water Tube ASTM D1785 Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120 ASTM D2239 Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR PR) Based on Controlled Inside Diameter1 ASTM D2466 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 ASTM D2564 Standard Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems ASTM D2609 Standard Specification for Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe ASTM D2683 Standard Specification for Socket Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing ASTM D2737 Standard Specification for Polyethylene (PE) Plastic Tubing ASTM D2846 Standard Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot and Cold Water Distribution Systems1 ASTM D3035 Standard Specification for Polyethylene (PE) Plastic Pipe (DR PR) Based on Controlled Outside Diameter ASTM D3261 Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing ASTM D5476 Standard Specification for Standard Classification System for Thermoplastic Polyurethane Materials (TPU) ASTM F493 Standard Specification for Solvent Cements for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe and Fittings ASTM F877 Standard Specification for Crosslinked Polyethylene (PEX) Hotand Cold Water Distribution Systems ASTM F1055 Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing ASTM F1807 Standard Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE RT) Tubing ASTM F2098 Standard Specification for Stainless Steel Clamps for Securing SDR9 Cross linked Polyethylene (PEX) Tubing to Metal Insert and Plastic Insert Fittings ASTM F2159 Standard Specification for Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE RT) Tubing ASTM F2389 Standard Specification for Pressure rated Polypropylene (PP) Piping Systems ASTM F2735 Standard Specification for Plastic Insert Fittings For SDR9 Crosslinked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE RT) Tubing ASTM F2769 Standard Specification for Polyethylene of Raised Temperature (PE RT) Plastic Hot and Cold Water Tubing and Distribution Systems ASTM G85 Standard Specification for Standard Practice for Modified Salt Spray (Fog) Testing August 2017November 9, 2018 PUBLIC REVIEW DRAFT 3

7 AWWA C901 CAN/CGSB 12.1 CFR Title 16, Chapter II, Part 1201 CSA C22.2 No. 14 CSA C22.2 No. 68 CSA C22.2 No. 223 CSA C22.2 No CSA B64 Series CSA B137 Series CSA B137.1 CSA B137.3 CSA B137.5 CSA B137.6 CSA B CSA B CSA B45.5/IAPMO Z124 Polyethylene (PE) Pressure Pipe and Tubing, ½ In. (13 mm) Through 3 In. (76 mm), for Water Service Tempered or Laminated Safety Glass Safety Standard for Architectural Glazing Materials Industrial Control Equipment Motor operated appliances (household and commercial) Power Supplies With Extra Low Voltage Class 2 Outputs Safety of household and similar appliances Part 1: General requirements Backflow preventers and vacuum breakers Thermoplastic pressure piping compendium Polyethylene (PE) pipe, tubing, and fittings for cold water pressure services Rigid polyvinylchloride (PVC) pipe and fittings for pressure applications Crosslinked polyethylene (PE) tubing systems for pressure applications Chlorinated polyvinylchloride (CPVC) pipe, tubing, and fittings for hot and cold water distribution systems Polypropylene (PP R) pipe and fittings for pressure applications Polyethylene of raised temperature resistance (PE RT) tubing systems for pressure applications Plastic plumbing fixtures ICC/ANSI A117.1 NSF/ANSI 42 NSF/ANSI 53 NSF/ANSI 55 Accessible and Usable Building and Facilities Drinking water treatment units Aesthetic effects Drinking water treatment units Health effects Ultraviolet Microbiological Water Treatment System UL 499 Electric Heating Appliances UL 508 Industrial Control Equipment UL 778 Motor Operated Water Pumps UL 935 Fluorescent Lamp Ballasts UL 979 Safety Water Treatment Appliances UL 1310 Class 2 Power Units UL 1951 Electric Plumbing Accessories UL Safety of Household and Similar Electrical Appliances, Part 1: General Requirements August 2017November 9, 2018 PUBLIC REVIEW DRAFT 4

8 3 Definitions and Abbreviations 3.1 Definitions In addition to the definitions in ASME A /CSA B125.1, and CSA B45.5/IAPMO Z124, the following definitions shall apply in this Standard: Interchangeable Assemblies A collection of otherwise individual components that are permanently encased or attached together, and which are intended to be removed and replaced as a complete assembly when one of the components or connections fail. Shower panel a frame or structural element with plumbing components intended for spraying water onto a bather. Note: Shower panels can (a) include electrical components; and (b) be a free standing column or part of a shower enclosure. 3.2 Abbreviations The following abbreviation applies in this Standard: CFR Code of Federal Regulations CPVC Chlorinated polyvinylchloride PE Polyethylene ppt Parts per thousand PVC Polyvinylchloride RP Reduced pressure principle backflow preventer TPU Thermoplastic polyurethane UV Ultraviolet 4 General Requirements 4.1 General Recirculating shower systems shall consist of panels, walls, and factory supplied components (e.g., plumbing supply fittings, plumbing waste fittings, connectors, piping, valves, electrical controls, and shower pans) and shall comply with the applicable requirements of this Standard Recirculating Mode The supply of water provided by recirculating shower systems operating in an active recirculating mode may vary from the requirements of a normal shower as follows: (a) System shall operate at water temperatures between 15 and 49ºC (59 and 120 ºF), (b) Operating in recirculating mode the showerhead or hand held shower shall meet the manufacturers specified flow rate which may exceed the maximum flow rate specified by ASME A /CSA B Conventional Mode The supply of water provided by recirculating shower systems operating in conventional mode shall meet the flow rate requirements of ASME A /CSA B August 2017November 9, 2018 PUBLIC REVIEW DRAFT 5

9 4.2 Materials Plastic Enclosures and Plastic Shower Panels Recirculating showers supplied with plastic enclosures and plastic shower panels shall comply with the applicable requirements of CSA B45.5/IAPMO Z124, except that portable shower panels shall not need to comply with the ignitability and cigarette tests specified in Clauses 5.13 and 5.14 of CSA B45.5/IAPMO Z Stainless Steel Shower Panels Recirculating showers supplied with stainless steel shower panels shall (a) comply with the applicable requirements of ASME A /CSA B45.4; and (b) have a minimum wall thickness of 1.17 mm (0.046 in) Aluminum Shower Panels Recirculating showers supplied with aluminum shower panels shall (a) have a minimum wall thickness of 2.16 mm (0.085 in); and (b) be anodized; and (c) not show any signs of corrosion, blistering, or discoloration when tested in accordance with Annex A1 of ASTM G85 for 24 h Wood Shower Panels Recirculating showers supplied with wood shower panels shall comply with the following tests specified in CSA B45.5/IAPMO Z124: (a) Clause 5.10, colorfastness test; (b) Clause 5.11, stain resistance test; (c) Clause 5.12, cleanability and wear test; (d) Clause 5.15, chemical resistance test; and (e) Clause , water absorption test Coatings Coatings, other than porcelain enameled steel or cast iron, shall comply with the coating requirements specified in Clause 5.2 of ASME A /CSA B Backflow Protection Backflow Prevention Methods and Devices Cold and hot water supply to the system shall be protected against backflow with the use of (a) an RP that shall comply to ASSE 1013 or CSA B64 Series, see Figures 3 and 4; (b) an air gap that shall comply to ASME A , or CSA B64 Series, see Figure 5; (c) an atmospheric vacuum breaker that shall comply to ASSE 1001, or CSA B64 Series, see Figure 6; (d) a spill resistant pressure vacuum breaker that shall comply with ASSE 1056, see Figure 7, or; (e) a pressure vacuum breaker that shall comply to ASSE 1020, or CSA B64 Series, see Figure 8. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 6

10 4.4 Plumbing Components Supply Fittings Control valves, diverter valves, shall comply with the applicable requirements of ASME A /CSA B Showerhead and handheld showers shall comply with the applicable requirements of ASME A /CSA B125.1 except for the applicable flow rate. Operating in recirculating mode the showerhead or handheld shower shall meet the manufacturers specified flow rate which may exceed the maximum flow rate specified by ASME A /CSA B Automatic compensating valves shall comply with ASSE 1016/ASME A /CSA B Connections Connections shall comply with Clause 4.4 or 4.5 of ASME A /CSA B Flexible Connectors Flexible connectors shall comply with ASME A /CSA B Supply Piping, Tubing, and Fittings Supply piping, tubing, and fittings for connection to the existing plumbing system shall comply with Sections through Supply piping, tubing, and fittings integral to the recirculating shower system shall (a) be part of an interchangeable assembly provided by the manufacturer and be tested in accordance with Section 5.11 in addition to the other applicable performance requirements of this standard; or, (b) comply with Section through Copper fitting shall comply with ASME B16.18 or ASME B Copper water tubes shall comply with ASTM B CPVC pipe and fittings shall comply with ASTM D2846 or CSA B PEX pipe tubing shall comply with ASTM F876 or CSA B137.5and PEX fittings shall comply with ASTM F877 or CSA B PVC fittings shall comply with ASTM D2466 or CSA B PVC pipe shall comply with ASTM D1785 or CSA B PE fittings shall comply with ASTM D2609, ASTM D2683, ASTM D3261, ASTM F1055, or CSA B August 2017November 9, 2018 PUBLIC REVIEW DRAFT 7

11 PE pipe shall comply with ASTM D2239, ASTM D2737, ASTM D3035, AWWA C901 or CSA B PE RT fittings shall comply with ASTM F1807, ASTM F2098, ASTM F2159, ASTM F2735 or CSA B PE RT pipe shall comply with ASTM F2769 or CSA B PP pipe and fittings shall comply with ASTM F2389 and CSA B Supply piping, tubing, and fittings made of materials other than those specified shall comply with their applicable standards Solvent Cement Solvent Cements shall comply with the requirements of: (a) ASTM D2564 for PVC (b) ASTM F493 for CPVC Flexible Thermoplastic Polyurethane (TPU) Spiral Tubing Flexible TPU spiral tubing shall (a) be made of materials complying with or exceeding classification 0253 as specified in ASTM D5476; and (b) comply with Section 5.4 of this Standard When using TPU spiral tubing with push fit fittings, an internal support shall be inserted into the end of the tubing prior to assembly Push Fit Fittings External push fit fittings shall comply with ASSE Waste Fittings Except when proprietary (i.e., non standard) waste fittings are provided by the manufacturer, the dimensions of waste outlets shall comply with CSA B45.5/IAPMO Z Factory supplied waste fittings shall comply with ASME A /CSA B125.2 or ASME A Electrical Requirements Recirculating shower systems incorporating electrical components or features shall comply with the applicable CSA or UL standards (e.g., CSA C22.2 No. 14, CSA C22.2 No. 68, CSA C22.2 No , UL 499, UL 508, UL 1951, or UL ) except when powered by a: (a) direct plug in Class 2 transformer that complies with the applicable CSA or UL standards (e.g., CSA C22.2 No. 223 or UL 1310); August 2017November 9, 2018 PUBLIC REVIEW DRAFT 8

12 (b) low voltage circuit (i.e., a circuit involving a peak open circuit potential of not more than 42.2 V supplied by a battery or by a Class 2 power supply); or (c) battery. 4.6 Glass Components Glass inserts, glass doors, glass side or return panels, and other glass components shall comply with the requirements for Category II applications specified in (a) CFR Title 16, Chapter II, Part 1201, for products intended for the United States; and (b) CAN/CGSB 12.1, for products intended for Canada The joints between glass inserts and enclosures or shower panels shall be watertight. 4.7 Shower Fixture Components Shower Pans Shower pans shall comply with CSA B45.5/IAPMO Z Glass and/or Plastic Pressure Sealed Walls Glass and/or plastic pressure sealed walls shall comply with the: (a) requirements for glass and/or plastic components of this Standard; and (b) applicable requirements of ASME A Filtration and Disinfection (a) There shall be at least one filter cartridge that shall comply to NSF/ANSI 42; (b) If a filter housing is provided for the filter cartridge as part of the recirculating shower system then the filter housing shall be compliant with Section 5, Structural performance requirements of NSF/ANSI 42; and, (b)(c) There shall be at least one of the following: (i) A water filter that complies to NSF/ANSI 53; or, (ii) An ultraviolet disinfection system that complies with the applicable electrical requirements specified in Section 4.5 of this standard and with the applicable requirements of a. UL 935; b. UL 979; and, c. NSF/ANSI 55, and shall be rated for Class A or Class B systems. Note: UV disinfection systems should be capable of delivering a minimum dosage of 30 mj/cm 2 and be rated by the manufacturer for residential use or higher. 4.9 Metallic Components Metallic profiles of doors with factory installed plumbing components shall (a) be protected with a non corrosive coating; and (b) shall comply with Clause of ASME A /CSA B Door hinges shall be made of metal coated with decorative organic coatings complying with Clause of ASME A /CSA B August 2017November 9, 2018 PUBLIC REVIEW DRAFT 9

13 4.9.3 Tie Bars Tie bars shall be made of brass or aluminum having a minimum wall thickness of 1.22 mm (0.048 in) Water Reservoirs Water reservoirs shall have a maximum volume of 7.6 L (2 gal) and shall comply with the test specified in Section Accessible Enclosures Enclosures designed to be accessible shall comply with the applicable requirements of ICC/ANSI A Water Pumps Water pumps shall comply with the requirements of UL Water Heaters Water heaters shall comply with the requirements of UL Water Control Valves Solenoid type water control valves shall comply with the requirements of ASME A /CSA B Conduit Conduit tubing and fittings used to house supply or return pipe shall be capable of containing a leak of the supply pipe. The conduit shall be manufactured of suitable pipe for the intended application and shall be capable of holding 35 kpa (5 psi) hydrostatic pressure for a period of 1 hr Interchangeable Assemblies Interchangeable assemblies may be tested as a single component or a system. Interchangeable assemblies shall comply with the applicable requirements specified in this standard and shall be subject to the additional performance test in Section 5. 5 Testing Requirements 5.1 Test Specimens Tests for enclosures and shower panels shall be conducted on complete shower panel or enclosure assemblies, unless otherwise specified in the test procedure. 5.2 Operation Tests General The operation tests in Section 5.2 apply only to shower systems intended to recirculate shower water for showering applications. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 10

14 5.2.2 Basic Operation and Reservoir Drain Test Test Procedure The basic operation test shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions; (b) Turn on and run the system as it is intended to be used for 15 min; (c) Turn the system off; (d) Allow the system to complete the shut down sequence in accordance with the manufacturer s instructions; (e) Let stand for 10 min; and. (f) Check water reservoirs Performance Requirements The shower system shall function as intended and the water reservoirs shall fully drain leaving only as much residual water as a typical shower pan Reservoir Leak Test Test Procedure The water reservoir leak test shall be conducted as follows: (a) Fill the test specimen with water a room temperature; (b) Place in an environmental chamber (c) Set the temperature to 60 ± 3⁰C (140 ⁰F ± 5) (d) Maintain temperature for 72 h; and (e) Allow to cool to room temperature; and, (f) Remove the reservoir Performance Requirement The water reservoir shall not leak, crack or permanently deform Contaminated Shower Water Recirculating Test Test Procedure of Muddy Solution The contaminated shower water recirculating test shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Prepare a 0.47 L (0.125 US gal) volume of contaminated water solution consisting of: (i) 10% by volume ground dirt sediment, (ii) 20% by volume hair shampoo, (iii) 20% by volume hair conditioner, (iv) 20% by volume body wash. (v) 30% water (This water shall be drawn from the same water as the tap water supplied to the shower) (c) Initiate the shower water recirculating operation and slowly pour the contaminated water solution onto the shower pan over a period of 10 s. (d) Let shower run for 1 minute after solution has been dispensed (e) Collect 16 ounces 0.47 L (0.125 gal)of water from showerhead in a clean, clear vessel. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 11

15 Performance Requirements Inspect the collected water. There shall be no (a) noticeable contamination or sediment, (b) noticeable color, or (c) noticeable odor Test Procedure of Saline Solution The salt contaminated shower water recirculating test shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Prepare a 16 ounces 0.47 L (0.125 gal) volume of a saline solution as follows: (i) Fill a clear vessel with 16 ounces 0.47 L (0.125 gal) of water from the shower or the same source as the shower (as close to the shower as possible) (ii) Test the sodium content (ppt units) record this as the baseline salinity of the sample (iii) Add about ¼ teaspoontsp (1.25 grams) of table salt in water (iv) Stir until dissolved (no visible salt crystals remain) (v) Add one or two drops of liquid dark food color (vi) Stir until completely dissolved and let stand for 2 3 minutes (c) Measure sodium content in ppt, then increase the salinity to be between 5 and 8 ppt above the baseline salinity measured in (b)(ii) in this section by adding more salt or more water to solution (d) Initiate the shower water recirculating operation and pour the salt contaminated water solution slowly and steadily onto the shower pan over a period of 10 secondss (e) Let shower run for 1 minute after solution dispensed (f) Collect 16 ounces 0.47 L (0.125 gal) of water from showerhead in a clean, clear vessel (g) Inspect this sample and measure the salinity of this sample in ppt and record as the resulting shower salinity Performance Requirements (a) Inspect the collected water. There shall be no (i) noticeable odor (ii) noticeable color (iii) noticeable contamination in the water, and (b) The difference between the resulting shower salinity to the baseline salinity shall not be greater than 0.30 ppt Plugged Water Filter Test Test Procedure The plugged water filter shower water recirculating test shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Install a clogged or simulated clogged filter or filter cap as supplied by the manufacturer (c) Turn on the shower system (d) Wait one minute August 2017November 9, 2018 PUBLIC REVIEW DRAFT 12

16 Performance Requirement The shower system must either shut down and not restart or it must enter conventional mode. In conventional operation the recirculating shower system shall: (a) open the drain to pass shower water to the drain (b) supply external hot and cold water to the shower user, (c) not exceed the flow rate requirements of ASME A /CSA B Shower Water Recirculating Thermal and Flow Test Test Procedure The shower recirculating test for shower systems shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. The hot water supplied to the system shall be ºC ( ºF) and the cold water supplied to the system shall be 10 ±3ºC (50 ± 5 ºF). (b) Initiate recirculating operation by dialing shower water temperature to its maximum hot water temperature setting. (c) Allow hot water to circulate and reach steady state. (d) Record flowing temperature and flowrate for 1.0 min. (e) Dial shower water temperature to its maximum coldest temperature setting. (f) Allow cold water to circulate and reach steady state. (g) Record flowing temperature and flowrate for 1.0 min. Note: Steps (b) and (h) constitute one cycle. (h) Repeat Steps (b) to (h) for 50 cycles Performance Requirements of the System There shall be no (a) Leakage or cracking of any component during or after the test; and, (b) Hot water temperature shall not exceed 49ºC (120ºF); and, (c) Flowrate fluctuations more than ± 10% Shower Water Conventional Thermal and Flow Test Test Procedure Disable the shower recirculating operation and conduct the testing in accordance with Section 4, Performance requirements and test methods, of ASSE /ASME A /CSA B Performance Requirements The system shall comply with all the performance requirements specified in Section 4, Performance requirements and test methods, of ASSE /ASME A /CSA B , with the following exception. When the system is tested in accordance with Section 4.7, Water supply failure test all types, of ASSE /ASME A /CSA B , the following performance requirement shall apply. After shutting off the hot/cold inlets, allow the system to run until the system shuts down, during this time, record the outlet temperature constantly to ensure it shall not exceed 49ºC (120 ºF) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 13

17 5.3 Load Tests Load Test for Complete Enclosures Test Procedure The load test for complete enclosures shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Apply a horizontal force of 667 ± 22 N (150 ± 5 lbf) to each area where a permanent fitting could be gripped. Note: When the test specimen does not have factory supplied fittings, use supply fittings that comply with ASME A /CSA B125.1 for conducting the test. (c) Hold the load for 1 min Performance Requirements The test specimen shall not pull away from the wall (or from the enclosure, when the test specimen is a shower panel). In addition, fittings shall not pull away from the enclosure or shower panel Load Test for Metal Panels of Enclosures Test Procedure Metal panels of enclosures shall be tested in accordance with the load test for shower wall surrounds specified in Clause of CSA B45.5/IAPMO Z Performance Requirements The test specimen shall comply with the performance requirements specified in Clause of CSA B45.5/IAPMO Z Load Test for Shower Panels Test Procedure The load test for shower panels shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Apply a downward force of 667 ± 22 N (150 ± 5 lbf) to one of the fittings that can be gripped. (c) Hold the downward force for 1 min. (d) Apply a horizontal force of 667 ± 22 N (150 ± 5 lbf) to one of the fittings that can be gripped. (e) Hold the horizontal force for 1 min Performance Requirements The shower panel shall not move downward or pull away from the wall or from the enclosure. In addition, fittings shall not pull away from the shower panel. 5.4 Tests for Flexible TPU Tubing Thermal Cycling Test for Flexible TPU Tubing August 2017November 9, 2018 PUBLIC REVIEW DRAFT 14

18 Test Procedure The thermal cycling test for flexible TPU spiral tubing used with push fit fittings in non continuous pressure applications shall be conducted as follows: (a) Connect the flexible TPU spiral tubing to the push fit fitting and the body spray or shower nozzle in accordance with the manufacturer s installation instructions. (b) Open the body spray or shower nozzle to the maximum flow. (c) Pressurize the test assembly to 483 ± 17 kpa (70 ± 2.5 psi) with water at 60 ± 2 ºC (140 ± 3ºF). (d) Hold the pressure for 20 s. (e) Shut off the water and allow the test assembly to depressurize for 10 s. (f) Pressurize the test assembly to 483 ± 17 kpa (70 ± 2.5 psi) with water at 10 ± 2 ºC (50 ± 3ºF). (g) Hold the pressure for 20 s. (h) Shut off the water and allow the test assembly to depressurize for 10 s. (i) Steps (c) to (h) constitute one cycle. Cycle the test assembly at a rate of 1 cycle per minute for a total of 10,000 cycles Performance Requirements There shall be no water leakage, separation between the tubing and the push fit fitting, or any sign of tubing rupture Pull Out Test for Flexible TPU Tubing Test Procedure The pull out test for flexible TPU spiral tubing used with push fit fittings in non continuous pressure applications shall be conducted as follows: (a) Connect the flexible TPU tubing to the push fit fitting in accordance with the manufacturer s installation instructions. (b) Condition the test assembly to a temperature of 10 ± 2 ºC (50 ± 3ºF) for 1 h. (c) Grip the push fit fitting and gradually, over a period of 10 s, pull with a force of 156 N (35 lbf) parallel to the axis of the tubing. (d) Hold the load for 10 min. (e) Examine the test assembly for any signs of separation. (f) Pressurize the test assembly with air to 483 ± 17 kpa (70 ± 2.5 psi) and immerse in water at temperature of 10 ± 2 ºC (50 ± 3ºF). (g) Examine for any signs of leakage Performance Requirements There shall be no separation or leakage Pressure Test for Flexible Tubing Test Procedure The pressure test for flexible tubing and hoses in non continuous pressure applications shall be conducted as follows: (a) Pressurize the test specimen to 862 ± 7 kpa (125 ± 1 psi) with water at 66 ± 2 ºC (150 ± 3ºF). (b) Hold the test pressure for 5 min Performance Requirements August 2017November 9, 2018 PUBLIC REVIEW DRAFT 15

19 The test specimen shall not leak or otherwise fail Tests for Glass and Plastic Inserts Water Tightness Test for Glass and Plastic Inserts Test Procedure The water tightness test for joints between glass or plastic inserts and enclosures or shower panels shall be conducted as follows: (a) Place a shower head capable of the manufacturer s maximum recirculation flow rate of water at 550 kpa (80 psi) 600 mm (2 ft) above and 600 mm (2 ft) in front of the uppermost joint. (b) Ensure that the water is at room temperature. (c) Direct the center of the spray at the uppermost joint. (d) Spray for at least 30 min Performance Requirement There shall be no leakage through the joint Thermal Shock Test for Glass and Plastic Inserts Test Procedure Glass and plastic inserts shall be tested in accordance with the thermal shock resistance test specified in Section 5.16 of CSA B45.5/IAPMO Z124, except that the water temperatures shall be 10 ± 2 ºC (50 ± 3ºF) and 49 ± 2 ºC (120 ± 3ºF) Performance Requirement The glass or plastic inserts shall not break Tests for Thresholds General Tests for thresholds shall be conducted on the largest size thresholds. For testing purposes, thresholds shall be installed in accordance with the manufacturer s installation instructions simulating field conditions of permanent fastening Vertical Load Test Test Procedure The vertical load test for thresholds shall be conducted as follows: (a) Apply a 1,334 ± 22 N (300 ± 5 lbf) force to the center of the horizontal threshold surface using a 75 mm (3 in) disc (see Figure 4). (b) Hold the load for 1 min. (c) Measure the deflection with the load in place. (d) Remove the load. (e) Measure the deflection 10 min after removal of the load. (f) Repeat Steps (a) to (e) at two other locations on the horizontal surface, 150 mm (6 in) from each end. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 16

20 (g) Examine the threshold in accordance with Items (b) to (d) of Clause of CSA B45.5/IAPMO Z Performance Requirements There shall be no deformation or visible cracks on the surface of the threshold. The deflection of the top surface, measured while the load is in place, shall not exceed 3.8 mm (0.15 in). The residual deflection, after removal of the load, shall not exceed 1.5 mm (0.06 in) Side Load Test Test Procedure The side load test for thresholds shall be conducted as follows: (a) Apply a 222 ± 4 N (50 ± 1 lbf) force to the center of a vertical threshold surface using a 75 mm (3 in) disc. (b) Hold the load for 1 min. (c) Examine the threshold in accordance with Items (b) to (d) of Clause of CSA B45.5/IAPMO Z Performance Requirements There shall be no visible cracks or deformation on the threshold Thermal Distortion Test for Thresholds Test Procedure The thermal distortion test for thresholds shall be conducted as follows: (a) Locate and mark a mm (10 4 in) test area on the horizontal plane of the threshold that provides a largest possible contact surface. (b) Heat a x 1.6 mm ( in) aluminum sheet for 15 min in an oven at 232 ± 6 ºC (450 ± 10ºF). (c) Remove the aluminum sheet from the oven and place it on the test area for 10 min. (d) Remove the aluminum sheet and allow the test area to cool for 4 h in ambient laboratory conditions. (e) Examine the test specimen Performance Requirements There shall be no cracking, blistering, delaminating, or visible distortion Corrosion Test for Metallic Parts Thresholds, metallic profiles of shower doors, hinges, tie bars, and other metallic components shall be tested in accordance with Clause of ASME A /CSA B Load Test for Doors Test Procedure The load test for doors shall be conducted as follows: (a) Install the door in accordance with the manufacturer s installation instructions. (b) Close the door. (c) Apply a downward force of 667 ± 22 N (150 ± 5 lbf) to one of the door handles. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 17

21 (d) Hold the load for 1 min Performance Requirements The handle shall not move downward, and the hinges shall show no signs of fracture or distortion under the applied load Load Test for Floor Mounted Showers Test Procedure The load test for floor mounted showers shall be conducted as follows: (a) Install the test specimen in accordance with the manufacturer s installation instructions. (b) Apply a 667 ± 22 N (150 ± 5 lbf) horizontal force at a point (i) 1,500 mm (5 ft) above the floor and (ii) on the center of the width of the test specimen; (c) Hold the load for 1 min. (d) Measure the angle of tilt. (e) Remove the load and wait for 1 min. (f) Measure the angle of tilt again, after removal of the load. (g) Repeat steps (b) to (f) applying the force at (i) a point on the test specimen perpendicular, in the horizontal plane, to the original point of application; and (ii) two additional separate locations at the same height on the test specimen. (h) Record a total of eight measurements Performance Requirement The test specimen shall not tilt more than 5º from its original vertical position Load Test for Shower Floor Edge Test Procedure The vertical load for the shower floor edge shall be conducted as follows: (a) Apply a 1,334 ± 22 N (300 ± 5 lbf) force to the edge of floor surface using a 75 mm (3 in) disc (see Figure 7). (b) Hold the load for 1 min. (c) Measure the deflection with the load in place. (d) Remove the load. (e) Measure the deflection 10 min after removal of the load. (f) Repeat Steps (a) to (e) at two other locations along the edge of the shower floor. (g) Examine the edge in accordance with Items (b) to (d) of Clause of CSA B45.5/IAPMO Z Performance Requirements There shall be no deformation or visible cracks on the surface of the shower floor edge. The deflection of the top surface, measured while the load is in place, shall not exceed 3.8 mm (0.15 in). The residual deflection, after removal of the load, shall not exceed 1.5 mm (0.06 in) Interchangeable Assembly Test Interchangeable assemblies intended for supply or recirculation of water shall be subject to the following hydraulic pressure and vacuum test: August 2017November 9, 2018 PUBLIC REVIEW DRAFT 18

22 Test Procedure Interchangeable assemblies intended for supply or recirculation of water shall be tested as follows: Install the interchangeable assembly in accordance with the manufacturer s installation instructions. (a) Apply a hydrostatic pressure of 1.5 times the manufacturers rated pressure for 15 min; and (b) If applicable subject the interchangeable assembly to a vacuum 1.5 times greater than the manufacturers rated vacuum for 15 min Performance Requirements The interchangeable assembly shall operate as intended and shall not burst or collapse or otherwise fail to perform as designed. August 2017November 9, 2018 PUBLIC REVIEW DRAFT 19

23 6 Markings and Accompanying Literature 6.1 General Recirculating shower systems complying with this Standard shall be marked with the manufacturer's name or trademark or, in the case of private labeling, the name of the customer for whom the shower system was manufactured Markings shall be permanent, legible, and visible after installation. 6.2 Third Party Manufacturers and Replacement Parts Recirculating shower system components manufactured by third parties shall bear a mark identifying the third party manufacturer Alternatively, shower systems may indicate, on a permanently affixed label, the web address or telephone number of a service department from which end users can obtain replacement parts. 6.3 Temperature Identification Temperature identification markings shall be in accordance with Clause 6.2 of ASME A /CSA B Instructions Each system shall be accompanied by a set of detailed instructions for their installation, adjustment, and care and maintenance. 6.5 Packaging Markings on packaging shall be in accordance with Clause 6.3 of ASME A /CSA B August 2017November 9, 2018 PUBLIC REVIEW DRAFT 20

24 Figure 1 Recirculating Shower System Flow Diagram Conventional Mode (See Section 1.1.2) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 21

25 Figure 2 Recirculating Shower System Flow Diagram Recirculation Mode (See Section 1.1.2) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 22

26 Figure 3 Recirculating Shower System Backflow Protection with RP Configuration 1 (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 23

27 Figure 4 Recirculating Shower System Backflow Protection with RP configuration 2 (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 24

28 Figure 5 Recirculating Shower System Backflow Protection with Air Gap (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 25

29 Figure 6 Recirculating Shower System Backflow Protection with Atmospheric Vacuum Breaker (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 26

30 Figure 7 Recirculating Shower System Backflow Protection with Spill Resistant Pressure Vacuum Breaker (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 27

31 Figure 8 Recirculating Shower System Backflow Protection with Pressure Vacuum Breaker (See Section 4.3) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 28

32 Figure 9 Shower Threshold, and Floor Edge Load Test (See Sections , ) August 2017November 9, 2018 PUBLIC REVIEW DRAFT 29