05-22-2023, 04:57 PM
I no longer have a Newell, but I may still be able to comment on this situation. If I'm off base, I trust I will be corrected. But it's good to understand how the system was intended to operate, at least with my vintage coach ( 1999 ).
As has already been mentioned there are two 120 VAC relays capable of starting and stopping the auxiliary compressor. One is the "well" switch with its adjustable start and stop setpoints internal to the switch, and the other is just a relay activated by the HWH leveling system. There should be a third component in this system which is a pressure relief valve ( regulator ) that should be set at the maximum allowable system pressure. In theory, the system should function something similar to this: Compressor comes on at the cut-in setpoint. I don't think this a critical value, but for me I set that at 75 psig. The compressor should run on the "well" switch until it reaches cout-out pressure. I set that to about 105 psig. Now things get more interesting....
If you choose to let HWH level your coach, which I often did, it will start the compressor so as to have sufficient pressure to raise the coach as necessary. When the coach is level, it stops the compressor. At that point I ALWAYS pushed the OFF button so the coach was no longer in auto level. Should you choose not to do that, HWH will try to level should your coach become out of level. You may be gone or asleep when this happens. HWH will start the compressor and open the appropriate valve/s to level the coach. What may happen is the coach will not level, but the HWH keeps trying as your compressor keeps running and running. Should the pressure relief not work or be set incorrectly, the pressure may rise to the maximum your compressor is capable of delivering. If you are lucky, the head gasket blows, if you are not, an air bag blows. That is way I disable the HWH from running my compressor and never left in Auto Level.
Russ
As has already been mentioned there are two 120 VAC relays capable of starting and stopping the auxiliary compressor. One is the "well" switch with its adjustable start and stop setpoints internal to the switch, and the other is just a relay activated by the HWH leveling system. There should be a third component in this system which is a pressure relief valve ( regulator ) that should be set at the maximum allowable system pressure. In theory, the system should function something similar to this: Compressor comes on at the cut-in setpoint. I don't think this a critical value, but for me I set that at 75 psig. The compressor should run on the "well" switch until it reaches cout-out pressure. I set that to about 105 psig. Now things get more interesting....
If you choose to let HWH level your coach, which I often did, it will start the compressor so as to have sufficient pressure to raise the coach as necessary. When the coach is level, it stops the compressor. At that point I ALWAYS pushed the OFF button so the coach was no longer in auto level. Should you choose not to do that, HWH will try to level should your coach become out of level. You may be gone or asleep when this happens. HWH will start the compressor and open the appropriate valve/s to level the coach. What may happen is the coach will not level, but the HWH keeps trying as your compressor keeps running and running. Should the pressure relief not work or be set incorrectly, the pressure may rise to the maximum your compressor is capable of delivering. If you are lucky, the head gasket blows, if you are not, an air bag blows. That is way I disable the HWH from running my compressor and never left in Auto Level.
Russ
Russ White
2016 Winnebago Vista LX 30T
#530 ( Sold )
1999 45' Double Slide - Factory upgrade 2004