Resideo L8148A1017 Relay
The Resideo L8148A1017 High Limit Aquastat Relay is a specialized immersion-type controller designed for 120Vac forced hydronic heating systems. This unit provides critical high-limit protection while functioning as the primary switching relay for both burner and circulator motors. Engineered for high-demand residential and commercial boilers, it features a 140-240 degree high limit operating range with a fixed 8-degree differential. The SPST switching logic ensures the burner circuit opens at the high-limit setpoint while the circulator remains operational during a thermostat call for heat, maintaining system thermal equilibrium and preventing short-cycling.
Built for versatile field integration, this horizontal mount Aquastat fits insulation depths from 1-1/2" to 3" and features a 4-1/2" capillary for precise thermal response. The integrated transformer simplifies wiring for 24V thermostats, and the chassis includes secondary terminals for adding remote low-limit controllers when necessary. For the field technician, the L8148A1017 is the standard for replacing legacy Honeywell oil boiler controls, providing a 0-95% RH operating humidity range and robust line voltage ratings for reliable burner (7.4A @ 120V) and circulator (7.4A @ 120V) management.
- Precision High Limit Control: Protects boiler vessels from overheating by breaking the burner circuit at a fixed 8-degree differential.
- Application Versatility: Compatible with line-voltage burner circuits and 24Vac thermostats with a 0.2A anticipator setting.
- Enhanced Connectivity: Includes accessory terminals to easily integrate secondary low-limit controllers.
- Industrial Durability: Rated for up to 95% non-condensing relative humidity and ambient temperatures up to 150°F.
- Standardized Fit: 4-1/2" capillary and horizontal case design streamline the replacement of existing immersion controllers.
Common Questions
What is the difference between the L8148A and L8148E models?
The L8148A, such as the 1017, is designed for line-voltage burner circuits (120V), whereas the L8148E model is utilized for 24V low-voltage burner circuits. Both maintain line-voltage circulator control.
Does this unit include the immersion well?
Standard Resideo L8148A units generally require the immersion well to be ordered separately to match specific boiler tapping sizes, though a well adapter is often included in Tradeline packages.
Can I use this relay with a millivolt system?
No, the L8148A1017 is specifically rated for 120Vac. For millivoltage gas valve applications, the L8148J model is the appropriate selection.
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 L8148A1017 Relay
The Resideo L8148A1017 High Limit Aquastat Relay is a specialized immersion-type controller designed for 120Vac forced hydronic heating systems. This unit provides critical high-limit protection while functioning as the primary switching relay for both burner and circulator motors. Engineered for high-demand residential and commercial boilers, it features a 140-240 degree high limit operating range with a fixed 8-degree differential. The SPST switching logic ensures the burner circuit opens at the high-limit setpoint while the circulator remains operational during a thermostat call for heat, maintaining system thermal equilibrium and preventing short-cycling.
Built for versatile field integration, this horizontal mount Aquastat fits insulation depths from 1-1/2" to 3" and features a 4-1/2" capillary for precise thermal response. The integrated transformer simplifies wiring for 24V thermostats, and the chassis includes secondary terminals for adding remote low-limit controllers when necessary. For the field technician, the L8148A1017 is the standard for replacing legacy Honeywell oil boiler controls, providing a 0-95% RH operating humidity range and robust line voltage ratings for reliable burner (7.4A @ 120V) and circulator (7.4A @ 120V) management.
- Precision High Limit Control: Protects boiler vessels from overheating by breaking the burner circuit at a fixed 8-degree differential.
- Application Versatility: Compatible with line-voltage burner circuits and 24Vac thermostats with a 0.2A anticipator setting.
- Enhanced Connectivity: Includes accessory terminals to easily integrate secondary low-limit controllers.
- Industrial Durability: Rated for up to 95% non-condensing relative humidity and ambient temperatures up to 150°F.
- Standardized Fit: 4-1/2" capillary and horizontal case design streamline the replacement of existing immersion controllers.
Common Questions
What is the difference between the L8148A and L8148E models?
The L8148A, such as the 1017, is designed for line-voltage burner circuits (120V), whereas the L8148E model is utilized for 24V low-voltage burner circuits. Both maintain line-voltage circulator control.
Does this unit include the immersion well?
Standard Resideo L8148A units generally require the immersion well to be ordered separately to match specific boiler tapping sizes, though a well adapter is often included in Tradeline packages.
Can I use this relay with a millivolt system?
No, the L8148A1017 is specifically rated for 120Vac. For millivoltage gas valve applications, the L8148J model is the appropriate selection.
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 L8148A1017 High Limit Aquastat Relay is a specialized immersion-type controller designed for 120Vac forced hydronic heating systems. This unit provides critical high-limit protection while functioning as the primary switching relay for both burner and circulator motors. Engineered for high-demand residential and commercial boilers, it features a 140-240 degree high limit operating range with a fixed 8-degree differential. The SPST switching logic ensures the burner circuit opens at the high-limit setpoint while the circulator remains operational during a thermostat call for heat, maintaining system thermal equilibrium and preventing short-cycling.
Built for versatile field integration, this horizontal mount Aquastat fits insulation depths from 1-1/2" to 3" and features a 4-1/2" capillary for precise thermal response. The integrated transformer simplifies wiring for 24V thermostats, and the chassis includes secondary terminals for adding remote low-limit controllers when necessary. For the field technician, the L8148A1017 is the standard for replacing legacy Honeywell oil boiler controls, providing a 0-95% RH operating humidity range and robust line voltage ratings for reliable burner (7.4A @ 120V) and circulator (7.4A @ 120V) management.
- Precision High Limit Control: Protects boiler vessels from overheating by breaking the burner circuit at a fixed 8-degree differential.
- Application Versatility: Compatible with line-voltage burner circuits and 24Vac thermostats with a 0.2A anticipator setting.
- Enhanced Connectivity: Includes accessory terminals to easily integrate secondary low-limit controllers.
- Industrial Durability: Rated for up to 95% non-condensing relative humidity and ambient temperatures up to 150°F.
- Standardized Fit: 4-1/2" capillary and horizontal case design streamline the replacement of existing immersion controllers.
Common Questions
What is the difference between the L8148A and L8148E models?
The L8148A, such as the 1017, is designed for line-voltage burner circuits (120V), whereas the L8148E model is utilized for 24V low-voltage burner circuits. Both maintain line-voltage circulator control.
Does this unit include the immersion well?
Standard Resideo L8148A units generally require the immersion well to be ordered separately to match specific boiler tapping sizes, though a well adapter is often included in Tradeline packages.
Can I use this relay with a millivolt system?
No, the L8148A1017 is specifically rated for 120Vac. For millivoltage gas valve applications, the L8148J model is the appropriate selection.
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.
