WHY DO i NEED IT?
If birds or squirrels build a nest in your chimney or bricks fall down your chimney, it will become blocked. What will shut off the hot water tank and furnace? A blocked chimney causes carbon monoxide to come back into your home. That’s why you need OFP PLUS, an Operating Electronic Control Type 2.
The patented technology and engineering of the OFP PLUS automatically shuts off the gas burner and water supply line to the boiler, furnace and hot water tank if it malfunctions due to: