
Laars Heating Systems R0408200 Module
The Laars R0408200 Ignition Module is a critical 24V component engineered for precise sequence control in high-efficiency hydronic boiler systems. This intermittent pilot (IP) controller is designed for 24VAC circuits, featuring a 15-second pre-purge (PP) cycle and a 7-second trial for ignition (TFI). By managing the pilot gas flow and high-voltage spark activation, the R0408200 ensures reliable flame rectification and safety shut-off protocols designated for Laars Pennant and Mighty Therm series. As a direct replacement for legacy control boards, it provides the robust electrical timing necessary to maintain ANSI Z21.20 compliance and prevent nuisance lockouts during cold-start sequences.
Technical Specifications and Benefits
- Optimized Ignition Sequence: Includes a factory-set 15-second pre-purge to clear the combustion chamber and a 7-second TFI window for consistent flame sensing.
- Voltage Compatibility: Operates on a standard 24V furnace control transformer circuit drawing minimal amperage during the spark cycle.
- Rugged Solid-State Circuitry: Built to withstand the high-temperature environments typical of commercial mechanical rooms without drifting out of timing specifications.
- Simplified Field Replacement: Features standard spade terminal connections labeled for high-voltage spark, pilot valve, and main valve integration.
- System Reliability: Engineered specifically for gas-fired hydronic applications where flame rectification stability is paramount for continuous operation.
Common Technical Questions
Will this module work with standing pilot systems?
No, the R0408200 is specifically designed for intermittent pilot ignition systems. It requires a specific wiring harness for the spark electrode and pilot valve assembly.
What causes a lockout on this specific Laars controller?
Most lockouts stem from poor flame signal strength (less than 1.0 microamps DC), improper grounding of the burner assembly, or a cracked ceramic insulator on the pilot electrode.
Can this replace a generic S8610U module?
While functional specs may overlap, this is an OEM-specific part for Laars Heating Systems. Always verify the wiring schematic and timing requirements for your specific boiler model before substituting components.
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: $588.76
-65%$588.76
$206.07Laars Heating Systems R0408200 Module
The Laars R0408200 Ignition Module is a critical 24V component engineered for precise sequence control in high-efficiency hydronic boiler systems. This intermittent pilot (IP) controller is designed for 24VAC circuits, featuring a 15-second pre-purge (PP) cycle and a 7-second trial for ignition (TFI). By managing the pilot gas flow and high-voltage spark activation, the R0408200 ensures reliable flame rectification and safety shut-off protocols designated for Laars Pennant and Mighty Therm series. As a direct replacement for legacy control boards, it provides the robust electrical timing necessary to maintain ANSI Z21.20 compliance and prevent nuisance lockouts during cold-start sequences.
Technical Specifications and Benefits
- Optimized Ignition Sequence: Includes a factory-set 15-second pre-purge to clear the combustion chamber and a 7-second TFI window for consistent flame sensing.
- Voltage Compatibility: Operates on a standard 24V furnace control transformer circuit drawing minimal amperage during the spark cycle.
- Rugged Solid-State Circuitry: Built to withstand the high-temperature environments typical of commercial mechanical rooms without drifting out of timing specifications.
- Simplified Field Replacement: Features standard spade terminal connections labeled for high-voltage spark, pilot valve, and main valve integration.
- System Reliability: Engineered specifically for gas-fired hydronic applications where flame rectification stability is paramount for continuous operation.
Common Technical Questions
Will this module work with standing pilot systems?
No, the R0408200 is specifically designed for intermittent pilot ignition systems. It requires a specific wiring harness for the spark electrode and pilot valve assembly.
What causes a lockout on this specific Laars controller?
Most lockouts stem from poor flame signal strength (less than 1.0 microamps DC), improper grounding of the burner assembly, or a cracked ceramic insulator on the pilot electrode.
Can this replace a generic S8610U module?
While functional specs may overlap, this is an OEM-specific part for Laars Heating Systems. Always verify the wiring schematic and timing requirements for your specific boiler model before substituting components.
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 Laars R0408200 Ignition Module is a critical 24V component engineered for precise sequence control in high-efficiency hydronic boiler systems. This intermittent pilot (IP) controller is designed for 24VAC circuits, featuring a 15-second pre-purge (PP) cycle and a 7-second trial for ignition (TFI). By managing the pilot gas flow and high-voltage spark activation, the R0408200 ensures reliable flame rectification and safety shut-off protocols designated for Laars Pennant and Mighty Therm series. As a direct replacement for legacy control boards, it provides the robust electrical timing necessary to maintain ANSI Z21.20 compliance and prevent nuisance lockouts during cold-start sequences.
Technical Specifications and Benefits
- Optimized Ignition Sequence: Includes a factory-set 15-second pre-purge to clear the combustion chamber and a 7-second TFI window for consistent flame sensing.
- Voltage Compatibility: Operates on a standard 24V furnace control transformer circuit drawing minimal amperage during the spark cycle.
- Rugged Solid-State Circuitry: Built to withstand the high-temperature environments typical of commercial mechanical rooms without drifting out of timing specifications.
- Simplified Field Replacement: Features standard spade terminal connections labeled for high-voltage spark, pilot valve, and main valve integration.
- System Reliability: Engineered specifically for gas-fired hydronic applications where flame rectification stability is paramount for continuous operation.
Common Technical Questions
Will this module work with standing pilot systems?
No, the R0408200 is specifically designed for intermittent pilot ignition systems. It requires a specific wiring harness for the spark electrode and pilot valve assembly.
What causes a lockout on this specific Laars controller?
Most lockouts stem from poor flame signal strength (less than 1.0 microamps DC), improper grounding of the burner assembly, or a cracked ceramic insulator on the pilot electrode.
Can this replace a generic S8610U module?
While functional specs may overlap, this is an OEM-specific part for Laars Heating Systems. Always verify the wiring schematic and timing requirements for your specific boiler model before substituting components.
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.












