Warrior-warrior

Darrel! Thank you, Dude. You found us in the Freddy's parking lot and, not only did you know everything about our furnace, but you invited us home to look at the one you had stored in your garage. You gave us a place to camp for the night, fed us an awesome breakfast, and spent hours helping us troubleshoot the furnace. You are the best! Best regards to you and the missus. We won't forget you!

Thanks, Maineah. I took the photos before I removed the screws you mentioned. With the floor screws out and the flange screws out, it still feels anchored to the outside. It will move slightly from side to side, with the pivot point at the wall. With the four flange screws removed, the flange is still anchored to the exhaust tube by the two screws that I can't get a screwdriver into, as they are recessed into the inner part of the flange. Thank you, Anthony for that excellent safety advice.

On our '91 Warrior, the two screws that hold the outside end of the exhaust tube to the external flange are not accessible. The space between the inner part of the flange and the outer is too narrow for even an offset screwdriver and with those screws in place the flange can't be pulled off. With the two screws that anchor the unit to the floor removed, the heater feels like it's free to be pulled out but is held at the outside end of that tube. Is there a slip connection somewhere between the heater and the exhaust port? The heater's issue, btw, is that after the blower starts and the the igniter sparks, the gas valve doesn't open. It cycles through the three auto-start attempts and the spark is visible each time, but (though the tank is full and the stove burners produce flame) the gas valve doesn't open. Though I've tried it both ways, I assume that the open position for the gas shut off handle is in line with it's outlet, and the position of the handle shown in the photo is the off position?