Honeywell L8124A1007/U Triple for Oil 130-240 Degrees Fahrenheit High Limit 10F Fixed Low Limit 10-25F Adjustable Vertical Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service. Immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems Provide multizone control by using a separate circulator and R845 Relay for each zone Include diaphragm powerhead and Micro Switch assembly that respond to temperature changes in boiler water Mount directly to boiler Select models include large transformers and extra terminals for supplying power to low voltage zone valves Require 24 VAC thermostat with heat anticipator set at 0.2 A (plus current draw of gas valves on L8124E) TRADELINE models include tube of heat conductive compound and range stops 0 to 95% RH non-condensing If you are not satisfied for any reason products may be returned within 30 days of shipment for a credit or exchange (provided the product is undamaged), except where noted, NOT RETURNABLE. Return documentation should clearly specify credit or exchange. Returned items must be in the original packaging. All returns must include a return authorization (RGA) number that can be obtained by contacting our Customer Service Department. Original shipping cost deducted. Reference to brand names and numbers are for reference only, and not meant to imply that they are made by that manufacturer (OEM). Sometimes images shown are generic and not meant to infer that they are actual. The parts will work as intended and are high quality and precision tested. Track Page Views With Auctiva's FREE Counter