
Resideo L4006G1006 Controller
The Resideo L4006G1006 is a professional-grade high limit aquastat designed for precise temperature regulation in hydronic heating systems. This immersion-style controller features an SPDT switch configuration, allowing it to function as a high limit, low limit, or circulator controller depending on the wiring. It utilizes a 1/2 inch NPT connection and a 3/8" x 2-7/8" copper sensing bulb with a 48-inch capillary tube for versatile mounting on boilers, storage tanks, or supply piping. The adjustable operating range of 100°F to 200°F provides the flexibility needed for various residential and light commercial boiler temperature control applications. Built for field reliability, it includes a heat-conductive compound for rapid thermal response and a manual reset option is not required for this automatic recycle model. Whether managing hydronic heating safety or staging circulator pumps, this aquastat ensures the system maintains stable setpoints while preventing overheating conditions.
Key Benefits:- Versatile SPDT Switching: Configurable for break-on-rise (high limit) or make-on-rise (circulator control) operations.
- Precise Sensing: 3/8 inch copper bulb ensures rapid heat transfer for accurate aquastat temperature settings.
- Installation Flexibility: A 48-inch capillary allows for remote mounting and easy access in tight mechanical rooms.
- Wide Operating Range: Adjustable 100°F to 200°F scale accommodates standard hydronic and domestic hot water tank requirements.
- Durable Construction: Engineered to withstand high-ambient boiler room conditions without drift in calibration.
- How do you wire the L4006G1006 for high limit protection? Connect the burner circuit to the R and B terminals to break the circuit when the temperature rises to the setpoint.
- Can this aquastat be used as a circulator controller? Yes, by wiring to the R and W terminals, the circulator will engage only when the water temperature reaches the desired threshold.
- What mounting hardware is required for installation? This unit is designed for use with a standard immersion well (sold separately) or can be strapped to piping using a mounting bracket.
- Does the capillary tube require special handling? Avoid sharp kinks or bends in the 48-inch capillary to prevent damage to the volatile fluid charge inside the sensing line.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $154.65
-65%$154.65
$54.13Resideo L4006G1006 Controller
The Resideo L4006G1006 is a professional-grade high limit aquastat designed for precise temperature regulation in hydronic heating systems. This immersion-style controller features an SPDT switch configuration, allowing it to function as a high limit, low limit, or circulator controller depending on the wiring. It utilizes a 1/2 inch NPT connection and a 3/8" x 2-7/8" copper sensing bulb with a 48-inch capillary tube for versatile mounting on boilers, storage tanks, or supply piping. The adjustable operating range of 100°F to 200°F provides the flexibility needed for various residential and light commercial boiler temperature control applications. Built for field reliability, it includes a heat-conductive compound for rapid thermal response and a manual reset option is not required for this automatic recycle model. Whether managing hydronic heating safety or staging circulator pumps, this aquastat ensures the system maintains stable setpoints while preventing overheating conditions.
Key Benefits:- Versatile SPDT Switching: Configurable for break-on-rise (high limit) or make-on-rise (circulator control) operations.
- Precise Sensing: 3/8 inch copper bulb ensures rapid heat transfer for accurate aquastat temperature settings.
- Installation Flexibility: A 48-inch capillary allows for remote mounting and easy access in tight mechanical rooms.
- Wide Operating Range: Adjustable 100°F to 200°F scale accommodates standard hydronic and domestic hot water tank requirements.
- Durable Construction: Engineered to withstand high-ambient boiler room conditions without drift in calibration.
- How do you wire the L4006G1006 for high limit protection? Connect the burner circuit to the R and B terminals to break the circuit when the temperature rises to the setpoint.
- Can this aquastat be used as a circulator controller? Yes, by wiring to the R and W terminals, the circulator will engage only when the water temperature reaches the desired threshold.
- What mounting hardware is required for installation? This unit is designed for use with a standard immersion well (sold separately) or can be strapped to piping using a mounting bracket.
- Does the capillary tube require special handling? Avoid sharp kinks or bends in the 48-inch capillary to prevent damage to the volatile fluid charge inside the sensing line.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Resideo L4006G1006 is a professional-grade high limit aquastat designed for precise temperature regulation in hydronic heating systems. This immersion-style controller features an SPDT switch configuration, allowing it to function as a high limit, low limit, or circulator controller depending on the wiring. It utilizes a 1/2 inch NPT connection and a 3/8" x 2-7/8" copper sensing bulb with a 48-inch capillary tube for versatile mounting on boilers, storage tanks, or supply piping. The adjustable operating range of 100°F to 200°F provides the flexibility needed for various residential and light commercial boiler temperature control applications. Built for field reliability, it includes a heat-conductive compound for rapid thermal response and a manual reset option is not required for this automatic recycle model. Whether managing hydronic heating safety or staging circulator pumps, this aquastat ensures the system maintains stable setpoints while preventing overheating conditions.
Key Benefits:- Versatile SPDT Switching: Configurable for break-on-rise (high limit) or make-on-rise (circulator control) operations.
- Precise Sensing: 3/8 inch copper bulb ensures rapid heat transfer for accurate aquastat temperature settings.
- Installation Flexibility: A 48-inch capillary allows for remote mounting and easy access in tight mechanical rooms.
- Wide Operating Range: Adjustable 100°F to 200°F scale accommodates standard hydronic and domestic hot water tank requirements.
- Durable Construction: Engineered to withstand high-ambient boiler room conditions without drift in calibration.
- How do you wire the L4006G1006 for high limit protection? Connect the burner circuit to the R and B terminals to break the circuit when the temperature rises to the setpoint.
- Can this aquastat be used as a circulator controller? Yes, by wiring to the R and W terminals, the circulator will engage only when the water temperature reaches the desired threshold.
- What mounting hardware is required for installation? This unit is designed for use with a standard immersion well (sold separately) or can be strapped to piping using a mounting bracket.
- Does the capillary tube require special handling? Avoid sharp kinks or bends in the 48-inch capillary to prevent damage to the volatile fluid charge inside the sensing line.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












