How to Install a Coleman Presidential II Pressure Switch

Turn off the power to the Coleman Presidential II at the electrical distribution panel and confirm it is off by trying to activate the furnace using the thermostat.

Turn the gas valve for the furnace to the "Off" position. This is typically located on the gas pipe next to the Coleman Presidential II.

Remove the cover off the front of the furnace by grabbing it on both sides and lifting up and away from the furnace.

Locate the Coleman Presidential's pressure switch. This is the round, black plastic device fastened to the inside center of the furnace. Wrap painter's tape around each of the two wires on the pressure switch and record their location. This helps when connecting the wire's to the new pressure switch.

Pull the wire connections from the terminals on the pressure switch. Pull the pressure tube from the side of the pressure switch.

Unscrew the two screws that fasten the pressure switch to the furnace's housing.

Fasten the new pressure switch's bracket to the furnace's housing using the screws removed from the older pressure switch.

Push the pressure tube into the pressure switch's receiver until the tube's end is flush with connector's plastic stop..

Push the electrical wires onto the pressure switch's terminals using the markings you made on the tape too make the right connections.