I just recently took my furnace to a man who has good bench testing equipment. Same person also replaces the cooling elements in the refrigerators that use ammonia evaporation. He confirmed that the furnace is heating properly.
I remembered a recall of Suburban furnaces that includes some 1968 models, in which the furnace had to be repaired so that CO and other fumes would not vent into the trailer due to some defect that could be corrected by the recall. I confirmed that my furnace was not within the series covered by the recall. Perhaps you should check that out, also, while you are testing things out.
Here is one of several threads addressing this recall.
I intend to brush and vacuum-sweep out the vents of our furnace. It's going to be tricky because the ducts run underneath the floor; and, previous owners sprayed foam insulation over the entire under-floor, including the frame, ductwork, and anything else that might be between the floor as deep as the frame, 3.5" to 4" or more in some areas.
I will use a contrivance of a plastic flexible water pipe cleanout snake, with a plastic brush head taped to the end of the snake. I will use flexible hose attached to my shop-vac following the brushing process, just to make sure any scary stuff can be removed.
The only problem I had with my furnace was improperly wired connection back to the thermostat. I feared a broken sail switch or other expensive repair. Once I had the inspection done, and had the correct wiring connected, I am hopeful that the furnace will work well enough to use in the three seasons we like to go camping here in Indiana, and extend our winter camping trips south.
My experience with the water heater is that it is a 10-gallon Atwood. I hope new expendable parts will also extend the use of this appliance. I have to manually light the furnace, exactly according to instructions you were provided. I think a push-button ignition would be great, but if the vintage appliance will last a few more seasons, we might get an on-demand water heater when the technology becomes more widely used and the price drops some more.
Good luck with your appliances, too.
I'll let you know how my plan goes for the furnace cleaning. I'm not sure, but a professional company might do a better job of cleaning the vents. I hope we can do it well enough. It's hard to find people who are willing to get involved with vintage AS projects, and, anyway, the DIY aspect is part of the fun, in my opinion.
Originally Posted by mpovah
Thanks! Will try that tomorrow night. The furnace seems to have a bunch of vents in the floor so it mist have a fan to push forced air through I bet. Will examine it more closely , likely it has something similar. I need a new fridge as well but the old Bailey had a propane fridge so I am familiar with those.