Atmos S0031 Flue Gas Thermostat

Product detailed description

Flue gas thermostats are essential components in solid fuel boiler systems, particularly in installations where precise temperature control is required for efficient operation and safety. These thermostats are commonly found in residential and commercial heating systems, where they help regulate fan operation based on flue gas temperatures. Installers working with Atmos boilers will encounter these devices on control panels, ensuring that the system shuts down the fan once the combustion process is complete. Proper integration of such thermostats is critical for maintaining system efficiency and preventing unnecessary energy consumption.

Technical parameters

Temperature range	-15 to 300°C
Weight	0.115 kg
Code	S0031
Brand	Atmos

The temperature range of -15 to 300°C allows the thermostat to function effectively in a wide range of ambient and operational conditions. This range is particularly important for ensuring the device can respond to both cold start-up and high-temperature combustion phases. The specified range also aids in selecting the correct thermostat for the intended boiler model and system configuration.

Installation and connection

The Atmos S0031 is installed on the control panel of compatible Atmos boilers. The installation process involves securing the thermostat in the designated location and connecting it to the control circuit for the fan. It is essential to verify the correct model of the boiler before installation, as this thermostat is not suitable for DC75SE, DCxxGSX, or 2012+ DCxxSP models. A common mistake is attempting to install it on incompatible models, which can lead to improper operation. Ensure all electrical connections are secure and that the device is correctly positioned for accurate temperature sensing.

Compatibility and accessories

This thermostat is not compatible with three-chamber boilers such as DCxxSP(L), DCxxGSP(L), CxxSP(L), ACxxSP(L), and KCxxSP(L) produced from 2012 onwards. It is also not suitable for Atmos boilers modified for pellet burners (model 2017 AD03). For these models, the S0078 thermostat is required. Additionally, the S0019 thermostat is designated for DC75SE and DCxxGSX models. The black wheel on the boiler panel is not included in the package and must be ordered separately if required.

Technical background for designers

The Atmos S0031 operates by detecting the temperature of flue gases and triggering the fan shutdown once the combustion process is complete. The device is constructed using materials suitable for high-temperature environments and is designed to integrate seamlessly with the boiler's control system. Its performance is influenced by the accuracy of temperature sensing and the stability of the control circuit. The device's service life and efficiency depend on correct installation, regular maintenance, and the absence of mechanical or electrical interference.

Service and operation

Routine checks should include verifying the thermostat's position and ensuring that the electrical connections remain secure. No specific service intervals are provided in the brief, but any signs of malfunction—such as the fan not shutting off—should prompt an inspection. If the black wheel is missing or damaged, it should be replaced to ensure accurate temperature readings and proper operation.

Frequently asked questions

Can the Atmos S0031 be used with DCxxSP boilers manufactured after 2012?
No, it is not compatible with DCxxSP(L), DCxxGSP(L), CxxSP(L), ACxxSP(L), or KCxxSP(L) models produced from 2012 onwards. The S0078 model is required for these boilers.

Is the black wheel included in the package?
No, the black wheel on the boiler panel is not included in the package and must be ordered separately if needed.

Can the Atmos S0031 be used with pellet-fired boilers?
No, it is not suitable for Atmos boilers modified for pellet burners (model 2017 AD03). The S0078 model is required for these systems.

What is the correct thermostat for DC75SE and DCxxGSX models?
The S0019 thermostat is specifically designed for DC75SE and DCxxGSX models and should be used in place of the S0031.