Dual Bulb High Limit Aquastat Controller w/ 54" Capillary (100 to 180 F) Zoom

Dual Bulb High Limit Aquastat Controller w/ 54" Capillary (100 to 180 F)


Brand: Honeywell

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Application: High Limit
Insulation: Remote Well: 2-1/2"
Remote Well: 1-1/2"
Controller Well: 2-1/4"
Bulb Size: 3/8"
Capillary Length: 54"
Temperature Range (F): 100°F to 180°F
Switch Action: Contacts Break on Temp Rise
Max Temp Differential: 5°F
Max Ambient Temp (°F): Maximum Tank: 210 F
Height: 5-5/8"
Width: 2"
Depth (Inches): 2-1/8"
Mount: Immersion Well
Temperature Rating: Energy Cutoff: 190°F

Description for Honeywell L8100B1094

L8100A,B, and C are immersion type controllers for regulating and limiting the tank temperature in water heaters. As the water temperature rises past the setpoint, the controller switches off the gas valve.


  • Regulates temperature and provides energy cutoff (ECO) action on a temperature rise past the setpoint.
  • Includes a second sensing element that senses average water temperature to minimize stacking.
  • Fluid-filled element operates Micro Switch? SPST snap-acting switch.
  • ECO switch interrupts the thermocouple circuit or main valve before tank reaches 210 F (99 C) maximum temperature.
  • Includes factory-installed immersion well on controller.
  • Internal adjustment screw.
  • Special switch terminal provides three-wire hookup from Aquastat® controller to gas valve.

  • Application: High Limit
  • Insulation Depth: controller well: 2 1/4 in. remote well: 1 1/2 or 2 1/2 in.
  • Bulb Size: 3/8 in.
  • Capillary length: 54 in.
  • Switching Action: SPST, contacts break on temperature rise.
  • Operating Temperature: 100 F to 180 F
  • Electrical Ratings: 2A maximum at 24 Vac.
  • Differential Temperature Range: Controller: 5 F, fixed. Energy Cutoff Switch: 20 F, fixed.
  • Maximum Ambient Temperature: Maximum Tank: 210 F
  • Mounting: Immersion Well
  • Temperature Rating (ECO) Energy Cutoff: 190 F

Dual Bulb High Limit Aquastat Controller w/ 54" Capillary (100 to 180 F)

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