General Boards > Redecorating and Updating your Motorhome

wall thermostat

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Joel Weiss:
I'm reopening this old thread just to point out that if anyone other than me still hasn't upgraded his thermostats, the new Honeywell ones are so energy efficient that they are designed to run on batteries without connecting to a 24V source.  To say it a bit differently, these thermostats can't be connected to 24V so the fact that we need to run them on batteries is consistent with their design. 

I replaced mine with this model (but there are several equivalent ones that would work just as well): http://www.amazon.com/dp/B002RL9BIM/ref=sr_ph?ie=UTF8&qid=1447531900&sr=1&keywords=Honeywell+RTH5100B+1025+Deluxe+Manual+Thermostat

Here's an excellent discussion of the wiring "map" between the Dometic ones we have and the Honeywell: http://www.modmyrv.com/2012/01/03/mod-100-honeywell-digital-thermostat

Total time to make the change: <15 minutes per thermostat

Michael Rump:
All,

The link that Dick Simonis mentions in the thread doesn't seem work for me.  I conducted a search and could not find the information.
Is there some way to verify the link or repost the information.

Thank you in advance.

Steve Huber:
Mike,
I think this is the link Dick was referring to.
Steve
http://beaveramb.org/forum/index.php/topic,4671.msg35462.html#msg35462

Joel Weiss:

--- Quote from: Steve Huber Co-Admin on November 16, 2015, 12:25:56 AM ---Mike,
I think this is the link Dick was referring to.
Steve
http://beaveramb.org/forum/index.php/topic,4671.msg35462.html#msg35462

--- End quote ---

With all due respect, this link is to a 2015 post by Dick Simonis.  The post above in this thread was posted in 2013, therefore, it couldn't have been referring to this post.

In fact, it was because I also couldn't locate the link for Dick's post that I found the link I provided above.  Regardless of whose instructions you use for transferring the wires from one thermostat to another, it's worth noting that the thermostats used by Dick in 2013 were representative of those available at that time.  All of those were designed to run on 24V and contained batteries for backup.  Although they were successfully used by many people for RV applications, in fact, they were being run off of their backup batteries since RVs couldn't deliver the necessary 24V.

The Honeywell thermostats I specified above have the distinct advantage of not having a 24V requirement. They are designed to be powered solely by two AA batteries.  Therefore, using these in an RV application is fully consistent with their design use.  IMHO it's always better to use a device in a manner consistent with its design rather than having to adapt one. 

Michael Rump:
Steve and Joel,

Thanks for clearing that up.

Best regards,

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