{"product_id":"wall-mounted-water-switch-with-submersible-pump","title":"Wall Mounted Water Switch with Submersible Pump","description":"\u003cp\u003eThe Promax Wall Mounted Water Switch is a complete rainwater to mains changeover system. It runs your toilets, laundry and outdoor taps on rainwater from your tank, and automatically switches to mains water whenever the tank runs dry, so the house never goes without water.\u003c\/p\u003e\n\u003cp\u003eIt will never top your tank up. Instead, when it detects there's no water coming from the tank supply, it directs mains water to the outlets, leaving the tank empty and waiting for the next rainfall to fill it.\u003c\/p\u003e\n\u003cp\u003eThe switch has a dual check valve built into the unit, protecting the mains supply from backflow in line with NZ Building Code Clause G12 (Acceptable Solution G12\/AS1).\u003c\/p\u003e\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe tank supply and the mains supply are both connected into the water switch (changeover device), which mounts on the outside wall of the house.\u003c\/p\u003e\n\u003cp\u003eThe system always uses rainwater first. While the pump has water to deliver, the switch sends rainwater through to the house.\u003c\/p\u003e\n\u003cp\u003eWhen the tank is empty, it changes over to mains so everything keeps working, and once rain refills the tank it switches back to rainwater on its own.\u003c\/p\u003e\n\u003cp\u003eThe pump has run-dry protection, which means when the tank runs out of water it switches off and won't attempt to restart for another 24 hours.\u003c\/p\u003e\n\u003cp\u003eIt tries every 24 hours until it finds water. When it does, the pump runs in automatic on-demand mode, starting whenever you open a tap, until the tank is next empty, when it switches off for another 24 hours.\u003c\/p\u003e\n\u003cp\u003eMains water never goes into the tank. There is no top-up or fill valve, so the full tank volume is always free to capture the next rainfall.\u003c\/p\u003e\n\u003cp\u003eTopping up a tank with mains is outdated and wasteful: if it rains the next day, the mains water used to top up has taken the place of free rainwater.\u003c\/p\u003e\n\u003cp\u003eThis makes the changeover approach a more sustainable option, and a simple way to meet council rainwater reuse and retention requirements.\u003c\/p\u003e\n\u003ch3\u003eBackflow Protection\u003c\/h3\u003e\n\u003cp\u003eThe built-in dual check valve is the appropriate level of protection for most residential rainwater reuse installations, which are generally considered low risk. A separate testable backflow device is only required where the installation is classed as high risk, for example where the supply serves a bidet or other high risk fixtures. Testable backflow devices are available from Promax on request.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBiases rainwater first, with automatic changeover to mains when the tank is empty\u003c\/li\u003e\n\u003cli\u003eBuilt-in dual check valve protecting the mains supply, in line with G12\/AS1\u003c\/li\u003e\n\u003cli\u003eNo mains top-up, so full tank capacity is kept for rainfall\u003c\/li\u003e\n\u003cli\u003eBrass valve body and fittings with a steel wall bracket\u003c\/li\u003e\n\u003cli\u003eLow profile moulded wall cover, 440mm wide x 490mm high x 115mm deep\u003c\/li\u003e\n\u003cli\u003eSuits Promax above ground and underground tanks\u003c\/li\u003e\n\u003cli\u003eSupplied with the Promax Submersible Pump 40LPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDesign note:\u003c\/strong\u003e pipework supplied from the switch carries non-potable water and must be identified as such (lilac pipe). It is intended for toilets, laundry and outdoor use.\u003c\/p\u003e\n\u003ch3\u003eThis Kit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWall bracket\u003c\/li\u003e\n\u003cli\u003eWall cover\u003c\/li\u003e\n\u003cli\u003eWater switch (changeover device) with built-in dual check valve\u003c\/li\u003e\n\u003cli\u003eSubmersible Pump 40LPM\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Promax","offers":[{"title":"Default Title","offer_id":53016367366429,"sku":"ACPUSUB40LMWMWS","price":2250.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/8293\/9677\/files\/wall-mounted-water-switch-cover-light-grey.png?v=1790205342","url":"https:\/\/www.promax.co.nz\/products\/wall-mounted-water-switch-with-submersible-pump","provider":"Promax","version":"1.0","type":"link"}