Originally Posted by Arty1313
The other night I had ac 2 on, burner off and the heat pumps on, during the night it got colder than expected and the heat pumps quit, but the vertical vent beside the kitchen sink started blowing hot air, again the furnace was not running nor was the heat pumps.
Does the Oasis sense this and the electric heat for the water( ac2) will kick on and in turn turn the fan on, if this is the case how do you control it ? and is it heating the basement as well?
From extensive cold weather camping this is what I have found.
1. Heat pumps are nice and, I will use them in cooler temperatures. When I see forecasts that overnight temperatures will get around 45 degrees then I will set the thermostat to the furnace mode. The heat pumps will not function at 40 degrees so, I don’t take a chance when forecast temperatures will get close to that.
2. In the furnace mode the Oasis is not very efficient heating the coach with only the AC elements. The AC elements are secondary heating sources. The burner is the primary heating source for heating the coolant fluid and water. When using hot water the ability to heat the coach is reduced.
3. I have tried the Auto mode on the thermostat and, I don’t recommend it.
4. In my coach to run the Oasis in the furnace mode I set zones 1 & 3 to furnace and zone 2 to Off. I run the burner and both AC elements.
5. The wet bay fan will come on at 45 degrees. I believe that is independent of furnace use? Perhaps, someone else can verify that.
6. Your problem of having heat in the kitchen sink area is as I described in my earlier post. This can be caused If the bypass switch is on, or if the check valve for loop one is stuck open then, the summer loop pump is powerful enough to suck the fluid through that valve and cause the radiator in the kitchen to get hot. You solve that by opening the distribution module panel and firmly rapping the loop 1 check valve. This usually fixes the problem.
From the Oasis Owners Manual.
8.6 Activating the Cabin Fan Heaters through the Thermostats
(Distribution Module Equipped Systems Only) (Burner or AC Heat or Engine Heat Source Available)
• Any thermostat connected to the Distribution Module’s Zone Control Board and calling for heat will cause the cabin fan controlled by that thermostat to be enabled. The ITR cabin fan has a built-in aquastat that prevents the cabin fan from blowing cold air. Once the room temperature has reached the temperature called for by the thermostat the cabin fan will turn off.
8.7 Activating the Domestic Hot Water
(OasisTM Heating Module and Distribution Module used in Tandem) (Burner or AC Heat On)
• As long as heat is available in the OasisTM Heating Module, the Distribution Module (Optional) will respond to a call for domestic hot water. Ensure that a heat source has been selected (i.e. Burner, AC, Engine). The production of the domestic hot water is continuous on the Burner operation and limited when using AC or Engine.