Sp36 heater?

[20993]

On my 1990 sp36, the book says there are 2 LP furnaces and I can’t find them. It does have primus boilers and a couple electric heaters so would it be possible that didn’t put the furnaces in? I’ve had the thing for a while but we don’t camp in the winter so I’ve never messed with the heaters. Now there is a big ice storm barreling in on us and it’s got me thinking about it. I don’t know exactly what they look like but I would think I would see an exhaust port or something. I guess my question is does anyone know where they might be on a SP.
Thanks, Jacob

[Dave&Beth]

If you have the Primus heat there probably isn’t lp heaters.
I have 1 under the couch, 1 under the dinette seat, and 1 in the bedroom.
All are street side and have their own intake and exhaust ports on the outside.

[20993]

Thanks, I thought I was blind or crazy. I’ve sure overlooked a few things in that bus before! I appreciate the reply

[kg4rrx]

Go outside and look for the vents. They'll be crome and two circles on top of each other.

[Greggnvt]

Our 89SP has Suburban propane heaters - not sure if the process is the same on your newer bus but in addition to having the propane tank valve open, we have to turn on the propane gas detector under the kitchen bench seat and turn on the LP switch on the dash. At the thermostats, leave the "electric heat" switch off, slide the lever at the bottom of the thermostat to "Heat" and then move the temperature lever at the top of the thermostat to a higher temperature setting than the current ambient temp.... If you haven't used the gas heater in a while, you may get some smells coming out of the discharge vent - more than likely it just some dust etc. getting warm/burning off.. The heat coming out is hot! I had my shop vac plastic hose laying on the floor in front of the couch and it melted it! FYI

[20993]

There are definitely no round vents on the outside of the bus. The only place it could would be the vented rectangular door behind the refrigerator, but I didn’t see anything like that. The thermostat doesn’t have an electric heat setting, “heat-off-cool” on one side and “off-on-auto” on the other side at the bottom. There is an lp switch on the dash and the propane sniffer by the dinette is on. I’m about convinced they are missing. Again I appreciate the replies.

[Greggnvt]

Originally Posted by 20993

There are definitely no round vents on the outside of the bus. The only place it could would be the vented rectangular door behind the refrigerator, but I didn’t see anything like that. The thermostat doesn’t have an electric heat setting, “heat-off-cool” on one side and “off-on-auto” on the other side at the bottom. There is an lp switch on the dash and the propane sniffer by the dinette is on. I’m about convinced they are missing. Again I appreciate the replies.

Not great pictures but they would be in similar locations if you did have them.