Older suburban furnace

[Jan Dyke]

I just installed an older Suburban Furnace in my 73 boler 13 ft. Furnace has no fan or electrical stuff. I installed a new thermo coupler . Last weekend camping was 4 degrees Celsius 35 F and the furnace ran all night and trailer temp only warmed up to 10 Ceisius 50 F. Should the furnace put out more heat than this. Also the thermostat appears to be not working
Thanks in.advance for any help

[Casita Greg]

Yes, your furnace should put out plenty of heat. Enough to keep you toasty warm if it was working properly. You may not have the thermocouple mounted in the right place to make the furnace work properly. Mounting location often makes a big difference. You could also have a bad T-stat, which could also cause it to not heat properly as well. Sounds like it's time for a little troubleshooting...

[Jan Dyke]

Thanks Greg for the imfo. Thermostat deffinately doesnt work. I just need to figure out how to replace it