Garydaplummer
Union plumber/pipefitter-self employed
Have a customer with an LP gas water heater sidewall vented through a draft inducer added to the horizontal flue piping. He wants me to replace the water heater and wants to continue to use the draft inducer. There are two "switches" screwed to the hood on top of the water heater with wires. I believe these are to detect excess flue heat in the event the blower fails and shut the water heater down. A guy from the gas company was there before me and red tagged the water heater (long story) and those wires are just hanging alongside the water heater, still attached to the "swithches" on the flue hood. We are not sure if he disconnected them or not. Where do they connect? They had push on wire terminal ends but I cannot find a place where they connect at the water heater. I have only seen this installation once before and that one had the wires plugging into another control on the gas line if I remmeber right. This system was in when they bought the home and they're not sure those wires were ever hooked to anything. The blower does work fine as soon as the water heater fires.