1、 January 2004 2004 NSF International Page i NSF Protocol P181 Residential Portable Electrical Spas January 2004 January 2004 2004 NSF International Page ii NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global supplier of public he
2、alth and safety-based risk management services serving the interests of all stakeholders. This Protocol is subject to revision. Contact NSF to confirm this revision is current. Users of this Protocol may request clarifications and interpretations, or propose revisions by contacting: NSF Internationa
3、l Engineering * January 2004 Copyright 2004 NSF International Page 5 of 13 Have a flow rate which equals or exceeds the flow rating of the specific opening when tested as described in ANSI/UL 1563, Section 54.1.* * derived from ANSI/NSPI 6 Residential Portable Spas, National Pool and Spa Institute 6
4、.4 Filters All filtration systems components shall meet the requirements of NSF/ANSI 50 - Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs relating to spas/hot tubs. Filters shall meet the requirements of ANSI/UL 1563 “Standard for Electric Hot Tubs, Spas and Ass
5、ociated Equipment”. For filters integral to the spa, the requirements shall apply during normal spa operation. A separate data plate and operational instructions may not be required. 7 Surface Skimmers/Weirs All surface skimmers shall meet the requirements of ANSI/NSF 50 Circulation System Component
6、s and Related Materials for Swimming Pools, Spas/Hot Tubs, relating to spa/hot tubs. For surface skimmers integral to the spa, the requirements shall apply to the spa under normal operating conditions. A separate data plate and operational instructions may not be required. 8 Air Blower and Air Induc
7、tion Systems The requirements of this section apply to systems that induce or allow air to enter the spa either by means of a power pump or passive design: Air blower systems shall prevent water backflow;* Air intake sources shall not introduce water, dirt or contaminants from outside the spa unit,
8、into the spa;* Integral air passages shall be able to withstand 150% the manufacturers maximum rated working pressure for a minimum of 5 minutes. * derived from ANSI/NSPI 6 Residential Portable Spas, National Pool and Spa Institute 9 Temperature Control Systems 9.1 Temperature Control Each spa shall
9、 have a temperature-regulating control that is in conformance with ANSI/UL 1563 “Standard for Electric Hot Tubs, Spas, and Associated Equipment”, including requirements for: Maximum set point corresponding to a water temperature of 40oC (104oF) in the tub; and Tolerance at the maximum temperature se
10、tting of not more than 3oC ( 5oF). 9.2 Temperature Limits Each spa shall have a temperature-limiting control that is in conformance with ANSI/UL 1563 “Standard for Electric Hot Tubs, Spas, and Associated Equipment”, including requirements for: January 2004 Copyright 2004 NSF International Page 6 of
11、13 Limiting the water at the inlet to the tub to a maximum temperature of 50oC (122oF); and Tolerance at the maximum temperature setting of not more than 3oC ( 5oF). 9.3 Temperature display Each spa shall have a display in one degree increments (Fahrenheit or Celsius) reflecting the spa water temper
12、ature. This display shall be located on the top surface or side of the spa and shall be readily visible to persons prior to entry. 9.4 Heater The heater shall be stable and stationary after plumbing and electrical connections are completed. The minimum clearances to combustible materials, as specifi
13、ed by the heater manufacturer, shall be maintained. Heaters shall meet the requirements of ANSI/UL 1261 “Electric Water Heaters for Pools and Tubs”. 10 Sanitation Systems 10.1 Water Sanitation Water sanitation in the spa shall be accomplished using chemicals registered by the United States Environme
14、ntal Protection Agency (EPA) under the Federal Insecticide, Fungicide, and Rodenticide Act, as recommended in the manufacturers manual (see Section 12.6). NSF shall not evaluate the effectiveness of EPA registered chemicals in specific spa systems under the scope of this protocol. Systems which do n
15、ot require direct addition of chemicals by the consumer shall be of the following two types and shall meet the applicable requirements of NSF/ANSI 50 - Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs: Mechanical and flow through chemical feeding systems; Electro
16、lytic chlorine/bromine generators. For process equipment integral to the spa, the requirements shall be met during normal spa operation and separate data plate and operational instructions may not be required. Water sanitation systems not included in this section will need to go through separate eva
17、luation and may be acceptable in the context of a formal protocol revision under the direction of the NSF Protocol Review Panel. 10.2 Water Treatment Equipment The applicable requirements of NSF/ANSI 50 - Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs shall app
18、ly to equipment supplied by the spa manufacturer for use in treatment of spa water, including: Ozone systems; UV light systems; Copper and silver ion generators. January 2004 Copyright 2004 NSF International Page 7 of 13 For process equipment integral to the spa, the requirements shall be met during
19、 normal spa operation and separate data plate and operational instructions may not be required. Water treatment equipment shall meet the requirements of the relevant electrical safety standard (UL/CSA/TUV). 11 Data Plate Each spa shall have a data plate that is permanent and easy to read. The data p
20、late shall have, at a minimum, the following information: Manufacturers name and address; Model and serial number; Maximum number of users (bathers); Maximum recommended temperature; Recommended spa water quality parameters, including pH, temperature, sanitizer level (e.g. 3-5 mg/L (ppm) Free Availa
21、ble Chlorine, 4-6 mg/L (ppm) Total Bromine); Reference to using EPA registered chemical disinfectants; Date of manufacture; Dry weight, water capacity, filled/occupied weight. 12 Owners Manual A comprehensive manual or manual package shall be provided with each spa covering important areas such as s
22、pa operation, maintenance, water quality monitoring, and safety. For spas utilizing components certified under NSF/ANSI 50, separate component manuals shall be included in the manual package. If the spa component is integral to the spa, equivalent information shall be provided in the spa manual. 12.
23、1 General Spa Safety This section shall include, at a minimum, the following information: Electrical hazards; Drowning hazards; Appropriate injury and health hazards. 12.2 Spa Specifications This section shall include, at a minimum, the following information: Maximum number of users (bathers); Footp
24、rint dimensions; Spa height; Effective filtration area; Heater output; Water capacity; Dry weight; January 2004 Copyright 2004 NSF International Page 8 of 13 Filled weight, assuming average occupant weight of 175 lbs.; Dead weight, assuming average occupant weight of 175 lbs.; Electrical requirement
25、s; A general description of how the spa operates. 12.3 Installation Instructions Installation instructions shall include, at a minimum: Site preparation; Ventilation instructions, if installed indoors; Spa leveling procedure; Electrical requirements and precautions. 12.4 Operating Instructions Opera
26、ting instructions shall include, at a minimum: Start-up and refill procedures and frequency; Jet control operations; Temperature adjustment operations; Lighting control, if appropriate. 12.5 Spa Care and Maintenance Instructions Maintenance instructions shall include, at a minimum: Draining instruct
27、ions; Filter system maintenance, including filter cartridge removal, cleaning, and installation; Care instructions for spa shell, exterior, and cover; Instructions for prevention of freezing and winterizing; Vacation care instructions. 12.6 Water Quality and Maintenance Instructions Water quality in
28、structions shall include, at a minimum; Methods for testing the spa water (test kit methods should be based on Standard Methods for the Examination of Water and Wastewater, APHA, 20thEdition (or latest edition), 1998); Methods for adding chemicals to the water; Methods for maintaining the proper wat
29、er chemistry; Recommended water quality parameters as shown in Annex B, Table B-1; Basic chemical safety guidelines; Recommended test frequency; Statement specifying use of EPA registered chemicals for spa sanitation; Statement reading “Maintaining your sanitizer at the recommended levels at all tim
30、es will decrease the occurrence of unsafe bacteria in your spa water” (or equivalent). January 2004 Copyright 2004 NSF International Page 9 of 13 12.7 Service Information Service information shall include, at a minimum; Troubleshooting guide; Warranty; Contact information for manufacturer; List of s
31、erviceable components/parts; Statement that consumer should not attempt to repair non-serviceable components. January 2004 Copyright 2004 NSF International Page 10 of 13 Annex A Program Specific Policies for Residential Portable Electrical Spas A.1 Marking the product In addition to that required in
32、 the NSF Certification Policies for NSF Protocols and Non-NSF Standards, certified individual products or packaging materials should bear the following information: A.2 Annual audits Audits of all production locations shall be conducted by NSF at least annually. Audits will cover the following basic
33、 items, at a minimum: No materials, design or construction changes without prior approval of NSF; Labeling A.3 Re-testing Re-qualification of test products shall occur at least every five years to assure continued compliance with the protocol. NSF Protocol P181 Residential Portable Electrical Spas J
34、anuary 2004 Copyright 2004 NSF International Page 11 of 13 Annex B Table B-1 Recommended Basic Water Quality Parameters (reprinted by permission of National Pool and Spa Institute) Parameter Minimum Ideal Maximum Comments A. SANITIZER LEVELS 1. Free chlorine (ppm) 2.0 3.0 5.0 10.0 Maintain these lev
35、els continually during hours of operation. Test water before use. During extended use, test water hourly. Shock treat water after use. 2. Combined chlorine (ppm) 0 0 0.2 High combined chlorine results in reduced sanitizer efficacy. Take remedial action to reduce combined chlorine. Other signs of com
36、bined chlorine: Sharp chlorinous odor and eye irritation (e.g. mucous membrane). 3. Total Bromine (ppm) 2.0 4.0 6.0 10.0 Hot water/heavy use may require operation at or near maximum levels. Regular oxidation is recommended. Test water before use. During extended use test water hourly. Shock treat wa
37、ter after use. 4. PHMB (ppm) Polyhexa-methylene biguanide 30 30-50 50 Certain classes of pool chemicals or treatment processes are incompatible with PHMB sanitizer. The pool or spa owner should consult with the supplier of PHMB if there is any question about compatibility of an auxiliary chemical or
38、 process. These include, but are not limited to: Chlorine/bromine sanitizers Copper-based algicides Monopersulfate (peroxymonosulfate) oxidizers Phosphate-based chelators and detergents Electrolytic chlorinators Copper/silver Ionizers When used with ozone, follow manufacturers directions Consult poo
39、l professional or test kit manufacturer for appropriate test kit Regular oxidation is recommended B. CHEMICAL VALUES 1. pH 7.2 7.4 7.6 7.8 Operating pH at the minimum level requires alkalinity and hardness to be operated at a higher level. At maximum pH, calcium hardness and total alkalinity may hav
40、e to be adjusted downward to maintain proper water balance. If pH is too high, then you get: Low chlorine efficacy Scale formation Cloudy water Eye discomfort. If pH is too low, then you get: Rapid dissipation of sanitizer Plaster and concrete etching Eye discomfort Corrosion of metals Vinyl liner w
41、rinkling 2. Total Alkalinity, buffering (ppm as CaCO3) 60 80-100 For calcium hypochlorite, lithium hypochlorite and sodium hypochlorite 100-120 For sodium dichlor, trichlor, chlorine gas, and bromine compounds 180 If total alkalinity is too low you get: pH bounce Corrosion tendency If total alkalini
42、ty is too high you get: Cloudy water Increased scale formation pH tends to be too high These values are based on the carbonate alkalinity 3. Total Dissolved Solids (ppm) 1,500 greater than TDS at spa start-up *Start-up TDS includes source water TDS and any other inorganic salt added at start-up An i
43、ncrease in TDS may indicate an accumulation of impurities during the course of operation. Excessively high TDS may lead to hazy water, corrosion of fixtures, and may inhibit sanitation. TDS should be periodically reduced by draining. January 2004 Copyright 2004 NSF International Page 12 of 13 Parame
44、ter Minimum Ideal Maximum Comments 4. Calcium Hardness (ppm as CaCO3) 100 150 250 800 Lower alkalinity and lower pH must be used with calcium above ideal. 5. Heavy Metals NA NA If excessive heavy metals are present, staining may occur, water may discolor, filter cycle may decrease, and may indicate
45、pH too low, corrosion, etc. C. BIOLOGICAL VALUES (maintaining adequate sanitizer levels is critical to preventing growth of algae and bacteria) 1. Visible Algae None visible None visible None visible If algae growth is observed, recommendations include: but are not limited to: superchlorinate the sp
46、a use an EPA-registered approved algicide according to label directions supplement with brushing and vacuuming Some algicides may cause foaming. 2. Bacteria None None Refer to Local Code Maintain proper sanitizer level and pH to control bacteria. D. STABILIZER 1. Cyanuric Acid (ppm) 10 30 50 150 If
47、stabilizer is too low: Chlorine residual is rapidly destroyed by sunlight. If stabilizer is too high: May reduced chlorine efficacy to algae. NOTE: Since less sunlight is found in indoor spas, the benefit of stabilizers is less important. Cyanuric acid does not stabilize bromine sanitizers. E. OXIDA
48、TION (regular oxidation is recommended for spas with normal bather load as a preventative measure) 1. Chlorine Products As needed At the end of each day facility is used. Determined by bather load, weather conditions, etc. Some high use spas my require oxidation several times per week. Regular oxida
49、tion is recommended to prevent the build-up of contaminants, maximize sanitizer efficacy, minimize combined chlorine and improve water clarity. Chlorine should not be used to oxidize a spa sanitized by PHMB. 2. Potassium Monopersulfate As needed At the end of each day facility is used. Determined by bather load, weather conditions, etc. Some high use spas my require oxidation severa
