{"product_id":"limestone-gravel-kit-hi-e2","title":"Jandy Limestone Gravel Condensate Neutralizer for Hi-E2 and Hi-E2R Pool Heaters, R0306200","description":"\u003cp\u003eThe Jandy R0306200 is the replacement limestone gravel for the condensate tray of Pro Series Hi-E2 and Hi-E2R gas pool and spa heaters. The Jandy parts list names it the condensate neutralizer for the model 350.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Hi-E2 is a high efficiency heater that cools its combustion gases so far that water condenses out of them, and Jandy notes that very cold pool water can produce 2 or 3 gallons of condensate an hour. That water is mildly acidic, typically pH 3.5 to 6.0 before treatment. It drains into the trap and neutralizer assembly, where the limestone raises the pH. Jandy calls the neutralizer necessary to prevent corrosion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eJandy's schedule is once a year. At that service, check that condensate drains freely and that the tray holds enough neutralizer and water to keep the water seal in the trap. A blue-green deposit in old gravel is normal: small traces of copper settle out as the limestone raises the pH.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstalling the refill\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSpread the gravel evenly through the tray and around the drain tubes, and make sure no pebble blocks a tube. Add water up to the level of the overflow, then put the tray cover back on.\u003c\/p\u003e","brand":"Jandy","offers":[{"title":"Default Title","offer_id":48650274275540,"sku":"LAR-151-2497","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/55092_1_201341873033.jpg?v=1789073576","url":"https:\/\/www.activepoolsupply.com\/products\/limestone-gravel-kit-hi-e2","provider":"Active Pool Supply","version":"1.0","type":"link"}