[Shelby & Barbara]

Joel,

If you need precise ordering info I can pull my log books and give you them, but there were so many parts that filled the need here are the generic descriptions.

The thermostat is a snap disc (Thermo-disc is one brand name) with a 125 degree open set point.

The solenoid valve is a 24 volt, (12 volt for a Classic) and it is rated for a variety of liquids including water or oil, and is rated for continuous duty, Normally closed, and high temp applications.

The power source was from the rear electric box and I tied in with the 24V alternator circuit so it is only on when the key is on. If you have a “key on” source of power close to the bay it might be easier than running the wire from the rear box but I couldn’t find one.

I’ve made the change to two coaches and in both instances I did the work when the bay was stripped for other purposes. The first time was when I redid the water heater in the last coach, and this time I did it when I swapped the aluminum tank for the stainless one.

[Fred F.]

thanks

[Roy]

As a part of this conversation, we have just completed the exchange of two water heaters in our coach. I have yet to drive it at 195 degrees with the water heater switches in the “on” position to determine if it heats the water while underway.

It is my understanding from other excellent comments on another thread on this subject…. that while underway, the switches in the “on” position release one valve and close another to divert the heated coolant through the water heater exchangers. In a separate comment that was made, it was suggested that I also place the “central heat button” in the “on” position.

My questions are these:

1.) Am I correct in assuming that the coolant “release” through the water heater heat exchangers will not occur until the coolant is released by an internal thernostat after the engine coolant has reached highway temperatures? If so, I do not know where that thermostat is?

2.) If I do indeed turn on the “central heat control” switch as well, it turns on the furnace. Is it correct to assume that this process opens the valves and that the coolant passing through the furnace would only be heated by the furnace if the engine coolant was not hot enough? It seems that if the furnace is on and engine heated coolant is passing through it, the furnace would not call for heating but would be in a “monitoring” position while underway?

Any explanations for what is supposed to happen?

Thank you,

Pres

[Gary]

Pres,

Just be aware my response to Joel was strictly related to our Liberty coaches with the single Raritan hot water tanks. Your question is Country Coach specific and someone with knowledge of that system is the best source of your answer.

[Archived]

If you have the Central Heat Buttons on and the Hot Water Heater buttons on this will allow the engine coolant to heat the heaters and when the engine coolant is hot enough the Webasto will not fire but will circulate engine coolant and when the coolant gets cool the Webasto will fire and continue to heat.

I do not know about question #1. I don’t think there is a thermostat that opens to circulate engine coolant. I think it may be a continuous loop through the plumbing bay and the control valves are a branch of the coolant loop opened when you activate the heater switches.

[Gerald]

Buddy…

Your previous comment was the basis for my question about the “central switc”… I get it and understand how it functions…. makes total sense.

Thank you,

Pres