{"product_id":"l8100-resideo-immersion-aquastat-controller-24vac-spst-high-limit","title":"L8100 | Resideo Immersion Aquastat Controller 24VAC SPST High Limit","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"345\" data-start=\"19\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe Resideo L8100 is an immersion-type aquastat controller designed to regulate and limit tank temperature in water heaters and hydronic heating systems. It operates on 24 VAC and provides SPST switching action with contacts that open on temperature rise. When the sensed water temperature exceeds the setpoint, the controller interrupts the gas valve circuit for high-limit protection.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"417\" data-start=\"20\"\u003e \u003c\/p\u003e\n\u003cp data-end=\"417\" data-start=\"20\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable height=\"458\" style=\"width: 77.0165%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eResideo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eHVAC \u0026amp; Refrigeration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eL8100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eTemperature Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eAquastat Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eHigh Limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eSwitch Action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eSPST, Break on Temperature Rise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eElectrical Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e2 A max @ 24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e100°F to 180°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eDifferential\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e5°F (Fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eEnergy Cutoff Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e200°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eMaximum Tank Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e210°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eBulb Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eCapillary Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e39 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003eImmersion Well\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eDimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e5-5\/8 in × 2 in × 2-1\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 47.2855%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 52.3643%;\"\u003e2 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eL8100\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp data-end=\"923\" data-start=\"406\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe L8100 is a temperature control device used for high-limit applications in water heating systems. It mounts in an immersion well and utilizes a fluid-filled sensing element with a 3\/8-inch bulb and 39-inch capillary for accurate temperature detection. The controller features fixed differential control and an integrated energy cutoff (ECO) function that interrupts the circuit before the tank temperature reaches the maximum limit. Designed for 24 VAC systems, it supports millivolt circuits with a maximum rating of 2 A.\u003c\/p\u003e\n\u003cp data-start=\"372\" data-end=\"828\"\u003e\u003cstrong data-end=\"1102\" data-start=\"1085\"\u003eKey Features:\u003c\/strong\u003e\u003cstrong data-end=\"1102\" data-start=\"1085\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"989\" data-end=\"1633\"\u003e\n\u003cli data-start=\"989\" data-end=\"1092\"\u003e\n\u003cp data-start=\"991\" data-end=\"1092\"\u003eImmersion-Type Design: Installs directly into a tank immersion well for direct temperature sensing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1093\" data-end=\"1178\"\u003e\n\u003cp data-start=\"1095\" data-end=\"1178\"\u003eSPST Switching Action: Contacts break on temperature rise for high-limit control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1179\" data-end=\"1263\"\u003e\n\u003cp data-start=\"1181\" data-end=\"1263\"\u003e24 VAC Operation: Compatible with standard low-voltage heating control circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1264\" data-end=\"1331\"\u003e\n\u003cp data-start=\"1266\" data-end=\"1331\"\u003e2 A Electrical Rating: Supports millivolt control applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1332\" data-end=\"1400\"\u003e\n\u003cp data-start=\"1334\" data-end=\"1400\"\u003eFixed 5°F Differential: Maintains stable temperature regulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1401\" data-end=\"1483\"\u003e\n\u003cp data-start=\"1403\" data-end=\"1483\"\u003eEnergy Cutoff Function: Provides safety interruption at elevated temperatures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1484\" data-end=\"1568\"\u003e\n\u003cp data-start=\"1486\" data-end=\"1568\"\u003e100°F to 180°F Temperature Range: Adjustable control range for hydronic systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1569\" data-end=\"1633\"\u003e\n\u003cp data-start=\"1571\" data-end=\"1633\"\u003e39-Inch Capillary: Allows flexible installation positioning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1635\" data-end=\"1773\"\u003eThe L8100 delivers the reliability and precision required for high-limit temperature control in water heater and hydronic heating systems.\u003c\/p\u003e","brand":"Resideo","offers":[{"title":"Default Title","offer_id":51155253264682,"sku":"L8100","price":454.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_f58d543f-f261-4fc2-addd-cae7baa4201c.webp?v=1771231241","url":"https:\/\/iqelectro.com\/products\/l8100-resideo-immersion-aquastat-controller-24vac-spst-high-limit","provider":"IQElectro","version":"1.0","type":"link"}