Our 95 has gas furnaces and those funky accompanying thermostats. I replaced them today. Simple on/off and temp select. Large LED display of ambient temp and selected temp. For anyone interested they are LuxPro ProSpec Series, PSD010B and run about $26 from Plumbers Outpost.
jor
I replaced ours also a couple of years ago. If the new thermostats have a battery, replace it going into winter, especially if you count on the rear furnace to keep the lower bays warm.
Pierce
Has anyone ever tried using a mercury bulb thermostat? I wonder if movement of the coach's suspension, even when parked, would cause the mercury bulb to tip back and forth turning the furnace on and off? I noticed Hydro Flame uses those cheapo thermostats that just have a breaker point on a bimetal coil, which seems out of place in an expensive luxury coach. I'm wondering if they tried using a mercury bulb thermostat but the suspension movement interfered with its function? I wanted to install the old fashioned round Honeywell thermostat with a mercury bulb in it. Those are the best thermostats ever made and they don't need batteries... and they're cool looking.
The EPA has made mercury thermostats illegal
There are a bunch of good used ones that were replaced with digital thermostats.
Changed out the thermostat in the bath today with the LuxPro PSD010B. Easy swap out, but during my ops check I noticed the display had gone blank. Removed the cover and found one of the AA batteries was very hot. Everything on the board looked good so I swapped out the batteries and everything seems to be working fine. I am assuming the battery had some kind of internal short. Is that possible?
If you're counting on the rear furnace keeping the lower bay from freezing and you have a digital thermostat, make sure to change the batteries before cold weather. Wonder how I know that.
Only time I have had a AA or AAA alkaline get hot was when I used a wall charger. One got really hot.
Pierce
His 02 would have aqua hot and the bath third zone heats the water tank bays alternately.
Thermostat in the bath works that fan and the hot circuit. The lower thermostat works the same hot circuit but the lower fans if I understand how this works.
Fourth loop is the engine circuit.
Hmmm, I've been thinking about our thermostats lately, too. Both are the original ones, and neither is in a particularly convenient place. The one in the bedroom is mounted pretty low and right over a heat vent. The front one is in the kitchen, up high on the wall. Neither is easy to see with trifocals. Maybe I ought to look for a pair of digital ones with nice, big numbers.
I always thought that the bedroom thermostats location caused extra cycling.
But the dryer air from the propane systems seems to not hold the heat as well as the moister air from the aqua hot system.
Adding humidity I thought might help. And relocating the thermostat?
Bob
Looking at the posts on Digital ones made me order 2 for the 240 last night. Will have them next week and replace old ones. If nothing else they will look good!!
John H
JohnH, I suggest you take Pierce's advice preemptively on your new thermostats and replace the provided batteries. My front furnace quit this morning. Of course, I ignored my wife's suggestion to replace the batteries. After all, they are almost new! New batts; warm as toast.
jor