L4081B1047/U Honeywell High Limit Circulator Aquastat Controller

• Temperature Controller
• Voltage Rating 120 to 240 Volt AC
• Minimum AC Voltage Rating (V) 120 Volt
• Maximum AC Voltage Rating (V) 240 Volt
• Minimum DC Voltage Rating (V) 0.25 Volt
• Maximum DC Voltage Rating (V) 12 Volt
• Operating Temperature 110 to 220 Deg F (Low Limit), 130 to 240 Deg F (High Limit)
• Humidity 0 to 95 Percent RH, Non-Condensing
• Size 4-3/32" Width x 2-11/16" Depth x 3-7/8" Height
• Mounting Horizontal
• Application High Limit and Circulator, Boiler, Gas or Oil-Fired Hydronic Heating System
• Approval UL, CSA
• Contact Rating 5.1 Amp at 240 Volt AC, 8 Amp at 120 Volt AC (Full Load)
• 30.6 Amp at 240 Volt AC, 48 Amp at 120 Volt AC (Locked Rotor), 0.25 Amp at 0.25 to 12 Volt DC
• Differential Temperature Rating 10 Deg F Fixed (High Limit), 10 to 25 Deg F Adjustable (Low Limit)
• Operating Pressure 200 PSI (Immersion Well), 100 PSI (Direct Immersion)
• Switch Type SPST
• Insulation Depth 1-1/2"
• Well Spud Size 3/4"-14 TPI Threaded
• Includes Push-In Field Addable Jumper

Install Instructions
MSDS Sheets
Specification Sheet

High Limit, Low Limit And/or Circulator Controllers Used to Regulate Boiler Water Temperature in Gas or Oil-Fired Hydronic Heating Systems; An Immersion Type Liquid-Filled Sensing Element Actuates Two Snap Switches; One Switch Operates as a High Limit Control; The other Switch Operates as a Low Limit And/or Circulator Control, Depending on the Model; Controller may be Mounted in any Positioning and Needs No Leveling; Separate, Easy-To-Read, Calibrated Dial and Set Point Adjustments for Each Switch; Differential Adjustment on Low Limit or Circulator Switch on Select Models; All Adjustments Accessible Inside Front Cover; Push-In Terminals for Quick Connecting; Single Sensing Element for Easy Installation; Two Spst Snap Switches Act Independently at Respective Temperature Settings