
Resideo L6008A1242 Control
The Resideo L6008A1242 is a professional-grade remote bulb immersion aquastat engineered for high-precision liquid temperature regulation in hydronic heating systems. Ideal for use as a circulator control or low limit controller, this unit features a single pole double throw (SPDT) switching action, allowing it to break the circuit on temperature fall or rise depending on your wiring configuration. It operates within a 100°F to 200°F temperature range and includes a 5-1/2 foot capillary length for flexible remote sensing in boilers and storage tanks. The adjustable differential settings of 5°F to 30°F provide technicians with the granular control needed to prevent rapid equipment cycling and optimize system efficiency. Built for durability in demanding mechanical rooms, the totally enclosed Micro Switch snap-acting switches ensure reliable performance under high-duty cycles. The device supports both horizontal and vertical mounting, adapting easily to existing manifold or tank ports.
Technical Specifications
- Application: Low Limit and Circulator Control
- Switching Action: SPDT (Single Pole Double Throw)
- Operating Temperature: 100°F to 200°F (38°C to 93°C)
- Differential Temperature: 5°F to 30°F (3°C to 17°C) Adjustable
- Capillary Length: 66 inches (5-1/2 feet)
- Bulb Size: 3/8-inch x 2-7/8-inch Copper
- Electrical Ratings: 8.0 AFL / 48.0 ALR @ 120VAC; 5.1 AFL / 30.6 ALR @ 240VAC
- Mounting: Vertical or Horizontal
Key Benefits for Contractors
- Application Versatility: Dual-function Honeywell L6008A1242 design serves as a primary circulator relay or a safety low-limit protection device.
- Precise Response: The copper remote sensing element detects rapid fluid temperature shifts to maintain stable setpoints.
- Simplified Setup: Features a visible control point scale and an external adjustment screw for fast field calibration.
- Installation Flexibility: Long 66-inch capillary and multi-directional mounting options permit placement in tight boiler cabinets.
Common Questions
How do I wire the L6008A1242 for circulator control?
For standard circulator operation, use the R-B terminals to make the circuit on temperature rise. For low-limit applications, use the R-W terminals to break the circuit if the temperature drops below your setpoint.
Does this aquastat require an immersion well?
Yes, for liquid-sensing applications, the bulb should be inserted into a compatible 1/2-inch or 3/4-inch NPT immersion well (sold separately) to protect the capillary and ensure accurate thermal transfer.
Can the L6008A1242 be used with millivolt systems?
Yes, the snap-acting SPDT switch is rated for 0.25 A at 0.25 to 12 VDC, making it compatible with Powerpile or other millivolt gas valve circuits.
This item is not eligible for free shipping.
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.
Resideo L6008A1242 Control
The Resideo L6008A1242 is a professional-grade remote bulb immersion aquastat engineered for high-precision liquid temperature regulation in hydronic heating systems. Ideal for use as a circulator control or low limit controller, this unit features a single pole double throw (SPDT) switching action, allowing it to break the circuit on temperature fall or rise depending on your wiring configuration. It operates within a 100°F to 200°F temperature range and includes a 5-1/2 foot capillary length for flexible remote sensing in boilers and storage tanks. The adjustable differential settings of 5°F to 30°F provide technicians with the granular control needed to prevent rapid equipment cycling and optimize system efficiency. Built for durability in demanding mechanical rooms, the totally enclosed Micro Switch snap-acting switches ensure reliable performance under high-duty cycles. The device supports both horizontal and vertical mounting, adapting easily to existing manifold or tank ports.
Technical Specifications
- Application: Low Limit and Circulator Control
- Switching Action: SPDT (Single Pole Double Throw)
- Operating Temperature: 100°F to 200°F (38°C to 93°C)
- Differential Temperature: 5°F to 30°F (3°C to 17°C) Adjustable
- Capillary Length: 66 inches (5-1/2 feet)
- Bulb Size: 3/8-inch x 2-7/8-inch Copper
- Electrical Ratings: 8.0 AFL / 48.0 ALR @ 120VAC; 5.1 AFL / 30.6 ALR @ 240VAC
- Mounting: Vertical or Horizontal
Key Benefits for Contractors
- Application Versatility: Dual-function Honeywell L6008A1242 design serves as a primary circulator relay or a safety low-limit protection device.
- Precise Response: The copper remote sensing element detects rapid fluid temperature shifts to maintain stable setpoints.
- Simplified Setup: Features a visible control point scale and an external adjustment screw for fast field calibration.
- Installation Flexibility: Long 66-inch capillary and multi-directional mounting options permit placement in tight boiler cabinets.
Common Questions
How do I wire the L6008A1242 for circulator control?
For standard circulator operation, use the R-B terminals to make the circuit on temperature rise. For low-limit applications, use the R-W terminals to break the circuit if the temperature drops below your setpoint.
Does this aquastat require an immersion well?
Yes, for liquid-sensing applications, the bulb should be inserted into a compatible 1/2-inch or 3/4-inch NPT immersion well (sold separately) to protect the capillary and ensure accurate thermal transfer.
Can the L6008A1242 be used with millivolt systems?
Yes, the snap-acting SPDT switch is rated for 0.25 A at 0.25 to 12 VDC, making it compatible with Powerpile or other millivolt gas valve circuits.
This item is not eligible for free shipping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo L6008A1242 is a professional-grade remote bulb immersion aquastat engineered for high-precision liquid temperature regulation in hydronic heating systems. Ideal for use as a circulator control or low limit controller, this unit features a single pole double throw (SPDT) switching action, allowing it to break the circuit on temperature fall or rise depending on your wiring configuration. It operates within a 100°F to 200°F temperature range and includes a 5-1/2 foot capillary length for flexible remote sensing in boilers and storage tanks. The adjustable differential settings of 5°F to 30°F provide technicians with the granular control needed to prevent rapid equipment cycling and optimize system efficiency. Built for durability in demanding mechanical rooms, the totally enclosed Micro Switch snap-acting switches ensure reliable performance under high-duty cycles. The device supports both horizontal and vertical mounting, adapting easily to existing manifold or tank ports.
Technical Specifications
- Application: Low Limit and Circulator Control
- Switching Action: SPDT (Single Pole Double Throw)
- Operating Temperature: 100°F to 200°F (38°C to 93°C)
- Differential Temperature: 5°F to 30°F (3°C to 17°C) Adjustable
- Capillary Length: 66 inches (5-1/2 feet)
- Bulb Size: 3/8-inch x 2-7/8-inch Copper
- Electrical Ratings: 8.0 AFL / 48.0 ALR @ 120VAC; 5.1 AFL / 30.6 ALR @ 240VAC
- Mounting: Vertical or Horizontal
Key Benefits for Contractors
- Application Versatility: Dual-function Honeywell L6008A1242 design serves as a primary circulator relay or a safety low-limit protection device.
- Precise Response: The copper remote sensing element detects rapid fluid temperature shifts to maintain stable setpoints.
- Simplified Setup: Features a visible control point scale and an external adjustment screw for fast field calibration.
- Installation Flexibility: Long 66-inch capillary and multi-directional mounting options permit placement in tight boiler cabinets.
Common Questions
How do I wire the L6008A1242 for circulator control?
For standard circulator operation, use the R-B terminals to make the circuit on temperature rise. For low-limit applications, use the R-W terminals to break the circuit if the temperature drops below your setpoint.
Does this aquastat require an immersion well?
Yes, for liquid-sensing applications, the bulb should be inserted into a compatible 1/2-inch or 3/4-inch NPT immersion well (sold separately) to protect the capillary and ensure accurate thermal transfer.
Can the L6008A1242 be used with millivolt systems?
Yes, the snap-acting SPDT switch is rated for 0.25 A at 0.25 to 12 VDC, making it compatible with Powerpile or other millivolt gas valve circuits.
This item is not eligible for free shipping.
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.












