Cajun Bill wrote:
mailman-ret wrote:
We had our new Dutchman DENALI in Pennsylvania in late September on her maiden voyage. We ran into the double heater/AC operation. On the first evening, I resorted to going to the AC circuit breaker and shutting it off. We spent a nice warm evening. Next morning, I called the dealership and was informed about the "Auto" setting. Next night, we spent a warm night with only the heat running.
He had mentioned that the system was designed with the double operation when it was set to heat. He said it was to more quickly move the warm air throughout the unit when you first enter a cold unit. Something that was forgotten in the introduction.
So, if I understand you correctly, while the "double operation" can be used to move the heat quickly through a cold unit, If I select "auto", that shouldn't happen and only the heat part should operate?
correct (most are designed that way)
heat only will come out of the round vents near the floor. Those are heat ducts. When you first fire up the furnace, you will feel just cool air, that's a safety feature to vent the furnace, its cool or room temp air. After 20 secs or so, you will hear the furnace actually 'fire up' then you gradually feel heat as the ducts warm up.
Your A/C air or A/C fan only air (in fan mode) will come out from the ac unit itself and also may have some round ac ducts in the ceiling if its a duct'ed unit. No heat comes from those A/C ceiling ducts.
I never felt the need to add a fan to heat any RV faster and I have dry camped (no water) in my units down to -30F.
RV propane heaters are designed to heat just like the forced air convection heating systems in our homes. The rv system uses convection heat that warms up the air and then uses its own fan to push this hot air away from the heated source toward cooler areas that need warming.
Remember cold is more dense (heavier) than warm air so it mixes naturally with warmer air as the warm air is introduced, its constantly exchanging places, circulating on its own.
