• 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.Aquastat Controller, 39 in. capilary length| Temperature Rating (ECO) Energy Cutoff | 200 F |
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| Overview | 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. |
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| Electrical Ratings | Millivolt--2A maximum at 24 Vac |
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| Switching Action | SPST, contacts break on temperature rise. |
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| Operating Temperature Range (F) | 100 F to 180 F |
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| Operating Temperature Range (C) | 38 C to 82 C |
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| Capillary Length (in.) | 39 in. |
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| Electrical Ratings (millivolt) | 2A maximum at 24 Vac. |
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| Dimensions (mm) | Case--143 mm high x 51 mm wide x 54 mm deep |
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| Insulation Depth (in.) | 1 1/2 in. |
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| Insulation Depth (mm) | 38 mm |
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| Differential Temperature (F) | Controller: 5 F, fixed. Energy Cutoff Switch: 20 F, fixed. |
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| Differential Temperature (C) | Controller: 3 C fixed; Energy Cutoff Switch: 11 C fixed. |
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| Maximum Ambient Temperature (F) | Maximum Tank: 210 F |
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| Maximum Ambient Temperature (C) | Maximum Tank: 99 C |
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| Case Dimensions (in.) | 5 5/8 in. high x 2 in. wide x 2 1/8 in. deep |
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| Case Dimensions (mm) | 136 mm high x 51 mm wide x 54 mm deep |
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| Approvals, Underwriters Laboratories Inc | UL Component Recognized: File No. MP466, Guide No. MBPR2 |
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| Approvals, American Gas Association IAS | Design Certified: Report Number 23-11B |
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