• L4103A,B,C have a sensing element and a high limit sensor with automatic reset.
• Mounts on a horizontal immersion well in water heater wall.
• Adjustable temperature setting scale.
• Fluid-filled element operates SPST, Micro Switch™ snap-acting switch.
• Integral, nonadjustable high limit. L4103C is an immersion controller for gas systems.
• L4103A,B is an immersion controller for oil systems.Combination Aquastat and High Limit Controller, 4 in.| Overview | The L4103A,B is an immersion-type controller for oil-fired water heaters. The Aquastat® Controller senses water temperature and cycles the burner through the oil primary. The high-limit controller breaks the circuit to the burner on a temperature rise pas |
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| Electrical Ratings | At Full Load-- 8A @ 120 Vac: 5A @ 240 Vac; At Locked Rotor-- 48A @ 120 Vac: 30A @ 240 Vac; At Full Load-- 8A @ 120 Vac: 5.1A @ 240 Vac; At Locked Rotor-- 48A @ 120 Vac: 30.6A @ 240 Vac |
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| Well Spud Size (in.) | 3/4 in. NPT |
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| Well Spud Size (mm) | 19 mm NPT |
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| Switching Action | SPST, contacts break on temperature rise. |
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| Operating Temperature Range (F) | 100 F to 240 F stop set at 150 F (Scale marked- Hot-Normal-Warm) |
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| Operating Temperature Range (C) | 38 C to 116 C stop set at 66 C (sCale marked- Hot-Normal-Warm) |
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| Insulation Depth (in.) | 4 in. |
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| Electrical Ratings (AFL) | 8A @ 120 Vac |
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| Insulation Depth (mm) | 102 mm |
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| Electrical Ratings (ALR) | 48A @ 120 Vac |
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| Differential Temperature (F) | 7 F ± 4 F |
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| Differential Temperature (C) | 3.9 C ±2 C |
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| Case Dimensions (in.) | 4 3/32 in. wide x 3 7/8 in. high x 2 11/16 in. deep |
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| Case Dimensions (mm) | 104 mm wide x 99 mm high x 68 mm deep. |
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| Mounting | Mounts on a horizontal immersion well in water heater wall. |
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| Approvals, Underwriters Laboratories Inc | UL Component Recognized: File No. MP466, Guide No. MBPR2. |
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Product Family
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