Laars Heating Systems R2005800 Temp Controller
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Laars Heating Systems R2005800 Temp Controller

Laars Heating Systems R2005800 Temp Controller

The Laars Heating Systems R2005800 Temp Controller (formerly identified as part number E2101400) is a high-precision aquastat and temperature regulation unit engineered for the Laars Rheos and Rheos+ boiler series. Designed to interface seamlessly with 1200, 1600, 2000, and 2400 MBTU models, this controller is a critical component for maintaining stable hydronic heating temperatures and ensuring fuel-efficient modulation. As a genuine Laars replacement part, it handles the complex logic required for high-capacity commercial boiler applications where thermal overshoot must be minimized to protect heat exchanger integrity.

For technicians servicing Laars heating systems, the R2005800 provides the reliable setpoint management necessary to satisfy T-T demand while coordinating with the system’s internal pumps and blowers. Its robust circuitry is built to withstand the heat levels inherent in larger cabinet configurations, offering a direct-fit solution for boiler temperature control failures. Whether you are performing a seasonal tune-up or responding to a total system lockout, utilizing factory-authorized HVAC replacement parts like this controller ensures your boiler maintenance meets original manufacturer specifications for safety and performance.

Key Benefits
  • Precise Modulation Support: Maintains tight control over setpoints to support the modulating gas valves found in the Rheos series.
  • Application Versatility: Fully compatible with both Laars Rheos and Rheos+ models ranging from 1.2 to 2.4 million BTU.
  • Direct Hardware Integration: Functions as a drop-in replacement for the legacy E2101400, eliminating the need for field modifications.
  • System Protection: Monitors thermal data to prevent high-limit trips and ensure consistent hydronic flow temperatures.
Common Questions

Which specific Laars models use the R2005800?
This controller is designed specifically for the Rheos and Rheos+ series, including the 1200, 1600, 2000, and 2400 models. It is the primary aquastat control logic for these high-output units.

Can this replace the E2101400 part number?
Yes, the R2005800 is the current manufacturer-authorized replacement for the older E2101400 temperature control unit.

Why is my Rheos boiler overshooting its temperature setpoint?
Overshooting is often caused by a failing temperature controller or a decalibrated thermistor. Replacing the R2005800 restores accurate signal processing to the gas train and modulation assembly.

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.

$152.82

Original: $436.62

-65%
Laars Heating Systems R2005800 Temp Controller

$436.62

$152.82

Laars Heating Systems R2005800 Temp Controller

The Laars Heating Systems R2005800 Temp Controller (formerly identified as part number E2101400) is a high-precision aquastat and temperature regulation unit engineered for the Laars Rheos and Rheos+ boiler series. Designed to interface seamlessly with 1200, 1600, 2000, and 2400 MBTU models, this controller is a critical component for maintaining stable hydronic heating temperatures and ensuring fuel-efficient modulation. As a genuine Laars replacement part, it handles the complex logic required for high-capacity commercial boiler applications where thermal overshoot must be minimized to protect heat exchanger integrity.

For technicians servicing Laars heating systems, the R2005800 provides the reliable setpoint management necessary to satisfy T-T demand while coordinating with the system’s internal pumps and blowers. Its robust circuitry is built to withstand the heat levels inherent in larger cabinet configurations, offering a direct-fit solution for boiler temperature control failures. Whether you are performing a seasonal tune-up or responding to a total system lockout, utilizing factory-authorized HVAC replacement parts like this controller ensures your boiler maintenance meets original manufacturer specifications for safety and performance.

Key Benefits
  • Precise Modulation Support: Maintains tight control over setpoints to support the modulating gas valves found in the Rheos series.
  • Application Versatility: Fully compatible with both Laars Rheos and Rheos+ models ranging from 1.2 to 2.4 million BTU.
  • Direct Hardware Integration: Functions as a drop-in replacement for the legacy E2101400, eliminating the need for field modifications.
  • System Protection: Monitors thermal data to prevent high-limit trips and ensure consistent hydronic flow temperatures.
Common Questions

Which specific Laars models use the R2005800?
This controller is designed specifically for the Rheos and Rheos+ series, including the 1200, 1600, 2000, and 2400 models. It is the primary aquastat control logic for these high-output units.

Can this replace the E2101400 part number?
Yes, the R2005800 is the current manufacturer-authorized replacement for the older E2101400 temperature control unit.

Why is my Rheos boiler overshooting its temperature setpoint?
Overshooting is often caused by a failing temperature controller or a decalibrated thermistor. Replacing the R2005800 restores accurate signal processing to the gas train and modulation assembly.

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

Shipping & Returns

Description

The Laars Heating Systems R2005800 Temp Controller (formerly identified as part number E2101400) is a high-precision aquastat and temperature regulation unit engineered for the Laars Rheos and Rheos+ boiler series. Designed to interface seamlessly with 1200, 1600, 2000, and 2400 MBTU models, this controller is a critical component for maintaining stable hydronic heating temperatures and ensuring fuel-efficient modulation. As a genuine Laars replacement part, it handles the complex logic required for high-capacity commercial boiler applications where thermal overshoot must be minimized to protect heat exchanger integrity.

For technicians servicing Laars heating systems, the R2005800 provides the reliable setpoint management necessary to satisfy T-T demand while coordinating with the system’s internal pumps and blowers. Its robust circuitry is built to withstand the heat levels inherent in larger cabinet configurations, offering a direct-fit solution for boiler temperature control failures. Whether you are performing a seasonal tune-up or responding to a total system lockout, utilizing factory-authorized HVAC replacement parts like this controller ensures your boiler maintenance meets original manufacturer specifications for safety and performance.

Key Benefits
  • Precise Modulation Support: Maintains tight control over setpoints to support the modulating gas valves found in the Rheos series.
  • Application Versatility: Fully compatible with both Laars Rheos and Rheos+ models ranging from 1.2 to 2.4 million BTU.
  • Direct Hardware Integration: Functions as a drop-in replacement for the legacy E2101400, eliminating the need for field modifications.
  • System Protection: Monitors thermal data to prevent high-limit trips and ensure consistent hydronic flow temperatures.
Common Questions

Which specific Laars models use the R2005800?
This controller is designed specifically for the Rheos and Rheos+ series, including the 1200, 1600, 2000, and 2400 models. It is the primary aquastat control logic for these high-output units.

Can this replace the E2101400 part number?
Yes, the R2005800 is the current manufacturer-authorized replacement for the older E2101400 temperature control unit.

Why is my Rheos boiler overshooting its temperature setpoint?
Overshooting is often caused by a failing temperature controller or a decalibrated thermistor. Replacing the R2005800 restores accurate signal processing to the gas train and modulation assembly.

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.

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