<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_04a443eb-c049-4be8-9a9f-5fe41dba5bf8" outputclass="ncc-clause"><sptc>J8D4</sptc><title id="_b08ccfc3-5bc0-4c09-bf68-fde9a0c3020b">Spa pool heating and pumping</title><archive-num>2019: J7.4</archive-num><subclause id="_dbdd59e1-efa3-41fd-8f60-867ab2f486dd" outputclass="subclause"><title id="_2059d8a1-d3e3-479b-931f-f01b1ccc0ebb">SubClause</title><num>1</num><p>Heating for a spa pool that shares a water recirculation system with a <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1487_0.7.0.xml#_4cbd9e00-0622-4dfd-9de4-913c80257732" id="_03d29560-81a2-4c13-bc84-9c14c5bc92df" scope="local" type="abcb-glossentry">swimming pool</xref> must be by—</p><ol outputclass="alpha"><li id="_033fd7f0-201a-4e92-9275-251591a0cee9">a solar heater; or</li><li id="_542ad88c-f145-4a72-bd1c-9dae7491c15e">a heater using reclaimed heat from another process such as reject heat from a refrigeration plant; or</li><li id="_a37a2bfc-e319-4e0a-8697-e00f79f8fef7">a geothermal heater; or</li><li id="_86045103-a04d-47ac-8d08-a03121a7a838">a gas heater that—<ol><li>if rated to consume 500 MJ/hour or less, achieves a minimum gross thermal efficiency of 86%; or</li><li>if rated to consume more than 500 MJ/hour, achieves a minimum gross thermal efficiency of 90%; or</li></ol></li><li id="_e1db8823-7de7-42bc-95b5-30952aeb38a0">a heat pump; or</li><li id="_7303f458-2049-45d0-a396-5ebae0170ec1">a combination of (a) to (e).</li></ol></subclause><subclause id="_7c54f5a7-b8dc-4ba9-8202-e67432946094" outputclass="subclause"><title id="_5cfea037-65d6-4659-9af5-479a84ba57ea">SubClause</title><num>2</num><p>Where some or all of the heating <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_a9790ddb-e13d-4fc0-aa34-02693631e444" scope="local" type="abcb-glossentry">required</xref> by (1) is by a gas heater or a heat pump, the spa pool must have—</p><ol outputclass="alpha"><li id="_5f274df3-5292-4286-98a6-c6a5ec9af6a5">a cover with a minimum <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1420_0.4.0.xml#_e5acb40f-3d3d-4a3d-8987-f09f7eaadf77" id="_5c8c4eea-b427-4c02-a331-fd744f532d48" scope="local" type="abcb-glossentry">R-Value</xref> of 0.05; and</li><li id="_2853fecf-13b6-443b-9422-acd90f00ac6f">a push button and a time switch to control the operation of the heater.</li></ol></subclause><subclause id="_c4502794-9af9-4b04-933b-75be39c3520b" outputclass="subclause"><title id="_017a9d54-675e-4533-9478-80873c64997b">SubClause</title><num>3</num><p>A time switch must be provided to control the operation of a circulation pump for a spa pool having a capacity of 680 L or more.</p></subclause><subclause id="_0cd6b71c-f352-4080-a906-c61b51a63cdc" outputclass="subclause"><title id="_ed9727e2-1fed-46d1-8ffc-e0ed15f92ad5">SubClause</title><num>4</num><p>Where <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_8da9acbb-e7ea-4222-9aa8-fd5e3ffefb79" scope="local" type="abcb-glossentry">required</xref>, a time switch must be capable of switching electric power on and off at variable pre-programmed times and on variable pre-programmed days.</p></subclause><subclause id="_565c83f2-7154-4a98-afb1-caf52d05422e" outputclass="subclause"><title id="_7c3eee00-62f3-402b-81aa-eac537c4fc7c">SubClause</title><num>5</num><p>Pipework carrying heated or chilled water for a spa pool must comply with the insulation requirements of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/3442_4.13.0.xml#_50999247-ceaf-47bd-a08d-6422d3df8860" id="_8eb6144a-8fcd-43af-8023-87ce9076064c" referencetype="Text" scope="local" synctargettext="false" type="ncc-clause">J6D9</xref>.</p></subclause><callout id="_af88044f-1ed6-42c6-be3b-1f60c30bb588"><callout-type ncc-info-type="application"/><p>J8D4 does not apply to a Class 2 building and a Class 4 part of a building.</p></callout></clause>