{"product_id":"grundfos-ups-25-80n-stainless-steel-three-speed-circulator-pump-for-tankless-water-heaters","title":"Grundfos UPS 25-80N Stainless Steel Three Speed Circulator Pump for Tankless Water Heaters with Composite Impeller","description":"\u003cp\u003eUnderfloor heating circuits and multi-zone hot water systems place more resistance on a pump than a simple recirculation loop, requiring additional head to maintain flow across extended pipe runs and manifold assemblies. The Grundfos UPS 25-80N is designed to meet that requirement, with an 8 m maximum head rating that keeps flow consistent across larger circuits.\u003c\/p\u003e\r\n\u003cp\u003eOn its highest speed setting the pump moves 82.5 L\/Min against a maximum head of 8 m, with power scaling from 114 W up to 160 W across its three settings and current reaching 0.7 A at 1 x 240 V. That range allows the same unit to serve a smaller zone at reduced speed or a full underfloor loop at full output.\u003c\/p\u003e\r\n\u003cp\u003eConstruction follows the canned rotor principle used across the UPS N range, with the rotor and bearings lubricated directly by the system water rather than a separate mechanical seal. The stainless steel housing and composite impeller extend the pump's liquid temperature tolerance down to -25°C, useful in plant rooms exposed to cold conditions before start-up.\u003c\/p\u003e\r\n\u003cp\u003eInternal thermal protection is built into the motor itself, and the enclosure carries an IPX2D rating for contact protection. At 180 mm port-to-port with 1 1\/2 inch connections, it shares mounting dimensions with the smaller UPS 25-60N, simplifying upgrades where more head is later needed.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eThree-speed selector provides field adjustment to match pump output to the hydraulic resistance of underfloor manifolds and multi-zone configurations\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design integrates the pump and motor without a mechanical shaft seal\u003c\/li\u003e\r\n\u003cli\u003eInternal thermal motor protection safeguards the winding against overload in continuous heating service\u003c\/li\u003e\r\n\u003cli\u003eStainless steel housing with potable water approval and wide temperature tolerance from -25°C to 110°C\u003c\/li\u003e\r\n\u003cli\u003eComposite impeller construction offers consistent hydraulic performance in heating and hot water applications\u003c\/li\u003e\r\n\u003cli\u003eIPX2D enclosure rating provides protection against dripping water and contact in service environments\u003c\/li\u003e\r\n\u003cli\u003eCanned rotor design with self-lubricating bearings supports continuous operation without routine intervention\u003c\/li\u003e\r\n\u003cli\u003e180 mm port-to-port body dimension matches the mounting footprint of the smaller UPS 25-60N\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50978282209527,"sku":"95906439","price":1282.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-ups-25-80n-stainless-steel-three-speed-circulator-pump-for-tankless-water-heaters.png?v=1785223210","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-ups-25-80n-stainless-steel-three-speed-circulator-pump-for-tankless-water-heaters","provider":"Foundation Pumps","version":"1.0","type":"link"}