{"product_id":"pentair-intellicenter-521905-i5p-pool-only-automation-system-5-function-load-center-intellichlor-ic40-salt-cell-no-actuators-legacy-part-number","title":"PENTAIR INTELLICENTER 521905 i5P POOL ONLY AUTOMATION SYSTEM – 5 FUNCTION, LOAD CENTER, INTELLICHLOR IC40 SALT CELL, NO ACTUATORS (LEGACY PART NUMBER)","description":"\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e Pentair IntelliCenter i5P\u003cbr\u003e\u003cstrong\u003ePart Number\/SKU:\u003c\/strong\u003e 521905 — legacy part number, superseded by 523962\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Pool Only — single body of water\u003cbr\u003e\u003cstrong\u003eSystem Capacity:\u003c\/strong\u003e 5 functions — filter pump circuit plus 4 auxiliary circuits\u003cbr\u003e\u003cstrong\u003ePanel Type:\u003c\/strong\u003e Load Center with 150 A built-in circuit breaker subpanel\u003cbr\u003e\u003cstrong\u003eSalt System:\u003c\/strong\u003e Included — cell and salt chlorine generator transformer\u003cbr\u003e\u003cstrong\u003eSalt Cell:\u003c\/strong\u003e IntelliChlor IC40\u003cbr\u003e\u003cstrong\u003eRemote Control:\u003c\/strong\u003e Pentair Pool app, outdoor wireless antenna included\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair IntelliCenter 521905 i5P\u003c\/strong\u003e is the single-body salt bundle — a pool without a spa, or a spa on its own. The i5P personality controls one body of water with a dedicated filter pump circuit plus four auxiliary circuits, covering a variable-speed pump, heater, lighting and a cleaner or water feature, with the full IntelliCenter touchscreen and app experience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis is a legacy part number.\u003c\/strong\u003e Pentair's Transition Guide supersedes 521905 with \u003cstrong\u003e523962\u003c\/strong\u003e; it no longer appears in the 2025–2026 catalogue. The system ships in an \u003cstrong\u003eIntelliCenter Load Center\u003c\/strong\u003e with a 150 A built-in circuit breaker subpanel and five pre-installed high-voltage relays, and includes both the \u003cstrong\u003esalt chlorine generator transformer\u003c\/strong\u003e and a salt cell. One point deserves emphasis: \u003cstrong\u003eno valve actuators are included\u003c\/strong\u003e. Pentair's Transition Guide records this SKU as the one salt bundle in the range that ships without them, and that is correct for a single-body system — there is no intake and return diverter pair to drive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA note on the cell.\u003c\/strong\u003e Pentair's replacement-parts sheet describes 521905 as shipping the \u003cstrong\u003eIntelliChlor IC40\u003c\/strong\u003e, while the Transition Guide's cell column reads “Yes, ICL Plus40” — most plausibly describing the replacement part number rather than the legacy one. We list IC40 and recommend confirming with your distributor. Control is through the IntelliCenter colour touchscreen and the \u003cstrong\u003ePentair Pool app\u003c\/strong\u003e, with the outdoor wireless antenna included. Expansion runs over RS-485 across up to three enclosures for as many as 39 auxiliary circuits, and the personality itself can be upgraded with an expansion card.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-body pool-only automation with the full IntelliCenter interface\u003c\/li\u003e\n\u003cli\u003e5 functions — filter pump circuit plus 4 auxiliary circuits\u003c\/li\u003e\n\u003cli\u003eLoad Center with 150 A built-in circuit breaker subpanel\u003c\/li\u003e\n\u003cli\u003eSalt cell and salt chlorine generator transformer both included\u003c\/li\u003e\n\u003cli\u003eOutdoor wireless antenna included\u003c\/li\u003e\n\u003cli\u003ePentair Pool app control with scheduling and remote access\u003c\/li\u003e\n\u003cli\u003eVariable-speed pump, heater and colour lighting integration\u003c\/li\u003e\n\u003cli\u003eExpandable over RS-485 to as many as 39 auxiliary circuits\u003c\/li\u003e\n\u003cli\u003eLegacy part number — current equivalent is 523962\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\/SKU\u003c\/td\u003e\n\u003ctd\u003e521905 (legacy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eIntelliCenter i5P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eIntelliCenter Pool Control System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool Only — single body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Capacity\u003c\/td\u003e\n\u003ctd\u003e5 functions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAux Circuits\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanel Type\u003c\/td\u003e\n\u003ctd\u003eLoad Center with 150 A built-in breaker subpanel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt System\u003c\/td\u003e\n\u003ctd\u003eIncluded — cell and transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt Cell\u003c\/td\u003e\n\u003ctd\u003eIntelliChlor IC40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuators Included\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote Control\u003c\/td\u003e\n\u003ctd\u003ePentair Pool app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion\u003c\/td\u003e\n\u003ctd\u003eUp to 3 enclosures, 39 auxiliary circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Equivalent\u003c\/td\u003e\n\u003ctd\u003e523962\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntelliCenter Load Center enclosure with 150 A built-in circuit breaker subpanel and five pre-installed high-voltage relays\u003c\/li\u003e\n\u003cli\u003ei5P personality kit, single-body pool-only configuration\u003c\/li\u003e\n\u003cli\u003eIntelliCenter outdoor control panel with colour touchscreen\u003c\/li\u003e\n\u003cli\u003eControl system transformer\u003c\/li\u003e\n\u003cli\u003eSalt chlorine generator transformer\u003c\/li\u003e\n\u003cli\u003eIntelliChlor salt cell — see the note above regarding IC40 versus Plus40 in Pentair's documentation\u003c\/li\u003e\n\u003cli\u003eOutdoor wireless antenna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot included:\u003c\/strong\u003e valve actuators — none are supplied with this SKU, individual circuit breakers, indoor control panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis suits a pool-only installation wanting full IntelliCenter automation with salt chlorination included from the outset. Do not assume the two actuators supplied with the pool-and-spa bundles in this range — this part number ships none, by design. For a new specification, 523962 is the current equivalent.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLearn more at Pentair:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.pentair.com\/en-us\/products\/residential\/pool-spa-equipment\/pool-automation\/intellicenter-control-system.html\"\u003ehttps:\/\/www.pentair.com\/en-us\/products\/residential\/pool-spa-equipment\/pool-automation\/intellicenter-control-system.html\u003c\/a\u003e\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48915901448441,"sku":"521905","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/poolave.com\/products\/pentair-intellicenter-521905-i5p-pool-only-automation-system-5-function-load-center-intellichlor-ic40-salt-cell-no-actuators-legacy-part-number","provider":"PoolAve ","version":"1.0","type":"link"}