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Old 02-04-2013, 06:04 PM   #1
TCNASHVILLE
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Switching to a digital thermostat

I would like to switch out the analog Coleman-Mach thermostat in my camper to a digital one to narrow the activity range. I switched out the one in the house a number of years ago and it took all of about 15 min. I was getting ready to buy one when I noticed they don't have a high/low fan switch. Is there a way around this or do I have to order the RV thermostat, and is it as easy to replace, matching wire to wire. And where to buy it. Did I ask enough questions? :confused. Sorry if this a re-post.
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Old 02-04-2013, 06:07 PM   #2
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Yes,
Just match the wires. There's a few threads on this.
Not sure about H/L fan options. I've never seen it on a house Thermostat.
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Old 02-04-2013, 06:38 PM   #3
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Many folks just wired their Digital Thermostat to the High Fan circuit only because there is little difference between the H/L output, maybe a little quieter.

You can add a switch to accommodate the H/L function, or purchase a Digital thermostat with a built-in H/L switch (refer to post #24 in the following link): http://www.jaycoowners.com/showthrea...rmostat+wiring

Another good reference: http://www.rverscorner.com/hunterstat.htm

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Old 02-05-2013, 05:39 PM   #4
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I installed this digital thermostat in 10 minutes and it works great. Wire for wire.

http://www.rvplus.com/coleman-digita...ampaign=spring
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Old 02-05-2013, 06:38 PM   #5
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Thanks LBF, I looked at that same unit online after the post. That seems the way to go.
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Old 02-16-2013, 12:36 PM   #6
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Bought this model but our analog is #7330*335 and the digital says it replaces 8330*336 337 338 339 386. Could we still use it or find a different replacement model?
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Old 02-16-2013, 01:09 PM   #7
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Clint, I believe you have the correct thermostat. The Coleman-Mach #8330-3362 replaces the analog #7330G335. I just received mine from Amazon today. Looks like it matches up wire to wire. $59.99 with free shipping. Should be an easy install, but I won't know if it works until spring unless I want to fire up the furnace. I lived in Seattle for 5 years, loved to go to Moses Lake where it was warm!
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Old 02-16-2013, 01:55 PM   #8
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I own a Jayco hybrid TT that has the mechanical thermo..... Can I replace it with a digital one, like the Coleman? It controls heat only, no air as I have the roof mounted A/C. Also, it just has the one fan speed, as far as I know.
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Old 02-16-2013, 04:51 PM   #9
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TCNASHVILLE,
I installed the same thermostat (Coleman Digital Heat/Cool Thermostat (u) 8330-3362)
in my 2013 26 BH. It matched wire for wire just like you said and has the ability to use both the high and low fan. I have had no problems or regrets installing mine.
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Old 02-16-2013, 05:58 PM   #10
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Quote:
Originally Posted by glsimms View Post
I own a Jayco hybrid TT that has the mechanical thermo..... Can I replace it with a digital one, like the Coleman? It controls heat only, no air as I have the roof mounted A/C. Also, it just has the one fan speed, as far as I know.

I easily installed the Digital Coleman Thermostat mentioned here in my current Jayco 298RLDS. I would assume you could use the same one and just hook up the necessary heat wires and ignore the AC set up. A bit pricey though. In another trailer I have, I installed a Honeywell Digital Non Programming Thermostat that I bought at Home Depot for about $20's. It was a 2 wire hookup for the heat only. Worked great.

http://yourhome.honeywell.com/home/P...e/PRO+3000.htm
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