The Frost-Sentry is an electronically controlled trace heater designed to prevent the condensate pipe in condensing boilers (or air-conditioning units) from freezing in temperatures below 2.0C.
Trace heaters use very little power and are very economical to run. The Frost Sentry constantly monitors the external temperature of the building, ensuring that it only switches itself on when temperatures are likely to cause the Condensate Pipe to freeze.
If a condensate pipe freezes, the boiler will shut down. The Frost-Sentry gently warms the inside of the condensate pipe to prevent freezing.
See technical Specifications for the Frost Sentry below: