Resideo L4006A1959 Aquastat Controller
The Resideo L4006A1959 Aquastat Controller is a high-performance immersion type device designed for the professional regulation of liquid temperatures in commercial boilers, storage tanks, and various hydronic heating systems. Engineered with a totally enclosed Micro Switch snap-acting mechanism, this controller ensures reliable liquid temperature regulation within an operating range of 40°F to 180°F. The SPST contacts are configured to break on temperature rise, making it an ideal choice for high limit or low limit protection. Its 3/8" x 2-7/8" copper sensing bulb, combined with a 3" capillary, allows for high sensitivity and rapid response to thermal shifts. With a fixed differential temperature of 5°F, this unit provides precise control without the need for manual recalibration. The L4006A1959 offers flexible horizontal or vertical mounting options and includes a premium heat-conductive compound to maximize thermal transfer between the sensing element and the immersion well.
- Versatile Application: Functions effectively as a high limit or low limit controller for boilers and storage tanks.
- Snap-Acting Switch: Includes a high-durability Micro Switch designed to operate instantly at the set point to prevent equipment overheating.
- Universal Mounting: Optimized for either vertical or horizontal installation, facilitating easier field replacements in tight mechanical rooms.
- Technical Precision: Features a 5 degree fixed differential and a visible scale for accurate setting adjustments in the field.
- Field Ready: Packaged with heat-conductive compound to ensure immediate and professional installation on-site.
Common Questions
Does this controller include the immersion well?
The L4006A1959 typically does not include the well assembly. It is designed to be used with existing immersion wells or specific 1/2" or 3/4" NPT wells available separately.
What is the maximum pressure rating for the sensing bulb?
When used with a direct immersion capillary bulb, the pressure rating is 200 PSI, while the immersion well rating is approximately 255 PSI.
Can I use this for circulator control?
While the L4006A1959 is primarily a limit controller with contacts that break on rise, contractors often use specific L4006 models for circulator control depending on whether the system requires making or breaking contacts on temperature rise.
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.
Original: $171.05
-65%$171.05
$59.87Resideo L4006A1959 Aquastat Controller
The Resideo L4006A1959 Aquastat Controller is a high-performance immersion type device designed for the professional regulation of liquid temperatures in commercial boilers, storage tanks, and various hydronic heating systems. Engineered with a totally enclosed Micro Switch snap-acting mechanism, this controller ensures reliable liquid temperature regulation within an operating range of 40°F to 180°F. The SPST contacts are configured to break on temperature rise, making it an ideal choice for high limit or low limit protection. Its 3/8" x 2-7/8" copper sensing bulb, combined with a 3" capillary, allows for high sensitivity and rapid response to thermal shifts. With a fixed differential temperature of 5°F, this unit provides precise control without the need for manual recalibration. The L4006A1959 offers flexible horizontal or vertical mounting options and includes a premium heat-conductive compound to maximize thermal transfer between the sensing element and the immersion well.
- Versatile Application: Functions effectively as a high limit or low limit controller for boilers and storage tanks.
- Snap-Acting Switch: Includes a high-durability Micro Switch designed to operate instantly at the set point to prevent equipment overheating.
- Universal Mounting: Optimized for either vertical or horizontal installation, facilitating easier field replacements in tight mechanical rooms.
- Technical Precision: Features a 5 degree fixed differential and a visible scale for accurate setting adjustments in the field.
- Field Ready: Packaged with heat-conductive compound to ensure immediate and professional installation on-site.
Common Questions
Does this controller include the immersion well?
The L4006A1959 typically does not include the well assembly. It is designed to be used with existing immersion wells or specific 1/2" or 3/4" NPT wells available separately.
What is the maximum pressure rating for the sensing bulb?
When used with a direct immersion capillary bulb, the pressure rating is 200 PSI, while the immersion well rating is approximately 255 PSI.
Can I use this for circulator control?
While the L4006A1959 is primarily a limit controller with contacts that break on rise, contractors often use specific L4006 models for circulator control depending on whether the system requires making or breaking contacts on temperature rise.
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 L4006A1959 Aquastat Controller is a high-performance immersion type device designed for the professional regulation of liquid temperatures in commercial boilers, storage tanks, and various hydronic heating systems. Engineered with a totally enclosed Micro Switch snap-acting mechanism, this controller ensures reliable liquid temperature regulation within an operating range of 40°F to 180°F. The SPST contacts are configured to break on temperature rise, making it an ideal choice for high limit or low limit protection. Its 3/8" x 2-7/8" copper sensing bulb, combined with a 3" capillary, allows for high sensitivity and rapid response to thermal shifts. With a fixed differential temperature of 5°F, this unit provides precise control without the need for manual recalibration. The L4006A1959 offers flexible horizontal or vertical mounting options and includes a premium heat-conductive compound to maximize thermal transfer between the sensing element and the immersion well.
- Versatile Application: Functions effectively as a high limit or low limit controller for boilers and storage tanks.
- Snap-Acting Switch: Includes a high-durability Micro Switch designed to operate instantly at the set point to prevent equipment overheating.
- Universal Mounting: Optimized for either vertical or horizontal installation, facilitating easier field replacements in tight mechanical rooms.
- Technical Precision: Features a 5 degree fixed differential and a visible scale for accurate setting adjustments in the field.
- Field Ready: Packaged with heat-conductive compound to ensure immediate and professional installation on-site.
Common Questions
Does this controller include the immersion well?
The L4006A1959 typically does not include the well assembly. It is designed to be used with existing immersion wells or specific 1/2" or 3/4" NPT wells available separately.
What is the maximum pressure rating for the sensing bulb?
When used with a direct immersion capillary bulb, the pressure rating is 200 PSI, while the immersion well rating is approximately 255 PSI.
Can I use this for circulator control?
While the L4006A1959 is primarily a limit controller with contacts that break on rise, contractors often use specific L4006 models for circulator control depending on whether the system requires making or breaking contacts on temperature rise.
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.
