The LK flue thermostat can be used to switch on your load unit or primary system pump based on the flue temperature. The probe can take up to 300 C. Fit the probe a little away from the flue exit of the boiler and if fitted close to a boiler with a rear exit then fit the probe to the bottom of the pipe. There is an offset washer which comes with the stat used to hold the probe a little off the surface of the pipe which helps to stop overheating of the probe. Typically you would set the probe to around 50 C but of course every boiler is a little different.
This is the LK flue thermostat
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Firepower is consulted before specifying.
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