Suburban heat pump

Thanks for all of the replies and information that was posted. I am the brother-in-law, and newbie to RV travel, that Tommy mentioned in the first post of this topic. Now I have completed my registration for RV.net and know that if I encounter any problems, there is a vast resource of experience that will help me out. Thanks again for your replies!

Thanks to everyone for your good explanations. I knew that I could count on y'all.

Golden_HVAC wrote:
Hi,

Chances are that the thermostat is made by Suburban, or at least might have the Suburban name on the thermostat someplace. The rooftop A/C unit or heat pump probably is not made my Suburban. More likely it is a Coleman, Dometic, or another brand.

The Furnace normally is built by Suburban, and one other furnace manufacture. So I am not surprised by their confusion.

Anyway most RV heat pumps have a thermostat that will shut it off at about 40F outside air temperature, and switch it over to the propane furnaces. This is normally automatic.

Also if you don't have 120 volt power, the furnace will come on right away with any call for heating. If you have only 105 volts, it will still try to run the heat pump, though it is bad on a compressor to run it at below about 104 volts.

Good luck!

Feel free to ask any question. Probably most have been asked at least 10 times over the past 10 years!

Fred.

The tstat is RVP. NOBODY uses the Furnace brand tstat on motorhomes in the past 20 years. The Furnace brand tstat does not have the ability to control roof top AC/HP operation. Unless someone has modified the system, the Wall Tstat will be the same brand as the roof top AC/HP unit. You will see the Furnace brand Tstat on inexpensive Trailers when they do not have ducted and Wall mount roof AC tstat controls. Doug

Hi,

Chances are that the thermostat is made by Suburban, or at least might have the Suburban name on the thermostat someplace. The rooftop A/C unit or heat pump probably is not made my Suburban. More likely it is a Coleman, Dometic, or another brand.

The Furnace normally is built by Suburban, and one other furnace manufacture. So I am not surprised by their confusion.

Anyway most RV heat pumps have a thermostat that will shut it off at about 40F outside air temperature, and switch it over to the propane furnaces. This is normally automatic.

Also if you don't have 120 volt power, the furnace will come on right away with any call for heating. If you have only 105 volts, it will still try to run the heat pump, though it is bad on a compressor to run it at below about 104 volts.

Good luck!

Feel free to ask any question. Probably most have been asked at least 10 times over the past 10 years!

Fred.

Thanks my friend!

Yes. Use furnace.

There are NO Suburban AC or heat Pump units for RV's. You have Suburban furnaces. If you have Heat Pumps, Tiffin installed RVP (Coleman) AC and Heat Pump units. NO, Tiffin did not install any type heat Strip in the roof top HP units. Here is the quick parameter of HOW RVP Heat Pumps operate on Tiffin. The HP's will work until the outside temp goes below 35 degrees give or take a few degrees. If below 35 degrees outside ambient, ONLY the furnace will come on even in HP mode(Electric Heat which means Heat Pump, NOT electric coils).
RVP units have a 5 degree separation between the set temp and the inside actual temp. IF, the set temp is MORE than 5 degrees from the inside temp, even in HP mode, the Furnace will come on as well as the HP until the set temp is within the 5 degrees and then the furnace kicks off and the HP continues the HEAT until you reach the set temp.
Example. The RV interior is 55 degrees. You set the HP to 70 degrees. BOTH the HP and the Furnace will come on and start to heat up the RV. Once the interior gets to 65 degrees, the furnace stops and the Roof HP continues until the 70 degree temp is met. Then the HP will shut off and when it gets below 70 degrees the roof top HP will then come on and reheat without the furnace. IF the interior of the RV is 66 degrees and the set temp is 70, ONLY the HP will come on and will heat the RV that 4 degrees and then shut off. Doug