Thermostat upgrade

[Trophy1200]

This is the one that I fitted to replace the front stat.
Don’t let the price scare you, that’s Canadian dollars.

[dkoldman]

Originally Posted by Trophy1200

This is the one that I fitted to replace the front stat.Attachment 39754
Don’t let the price scare you, that’s Canadian dollars.

That is exactly what we have, came OEM in our coach. Two different models though as one controls a furnace and the other does not.

What I like about them the most, is we have the Main Thermostat (w/Furnace) wired into our AGS. So when Thermostat is on and it gets too hot based on Setpoint it tries to turn on Compressor and if no power the EC-30 starts up the generator if it is in Auto mode.

What I like about them the least is you have to scroll step by step to all of the settings like Fan, Hi , Lo, Cool, Hi, Lo; Auto Cool Hi, Lo. They should have made Auto Cool Hi the default, or allow User to define default setting. If you overshoot you have to step through the sequence all over again

Overall, I give 9 out of 10

[cruzin101]

Originally Posted by Trophy1200

This is the one that I fitted to replace the front stat.Attachment 39754
Don’t let the price scare you, that’s Canadian dollars.

Thanks!

[Dan-sr@perra-us.net]

I do not know where to post this question however this thread is closest to my concern.

I have a Thor ACE 30.3, It has,
Two AC units,
Two thermostats,
But only one furnace.

One thermostat runs the Bedroom AC the other thermostat runs the living area AC but, both thermostats apparently run the furnace.

So here is my question. Is there any potential for damage if one thermostat is set to heat while the other is set to cool?

Please keep in mind that I would never intentionally do this but, with young grandchildren around who might try to experiment with the HVAC system I think this is a valid question. Please resist the temptation to point out the obvious issue of the AC and HEAT going to war with each other.

[dkoldman]

Originally Posted by Dan-sr@perra-us.net

I do not know where to post this question however this thread is closest to my concern.

I have a Thor ACE 30.3, It has,
Two AC units,
Two thermostats,
But only one furnace.

One thermostat runs the Bedroom AC the other thermostat runs the living area AC but, both thermostats apparently run the furnace.

So here is my question. Is there any potential for damage if one thermostat is set to heat while the other is set to cool?

Please keep in mind that I would never intentionally do this but, with young grandchildren around who might try to experiment with the HVAC system I think this is a valid question. Please resist the temptation to point out the obvious issue of the AC and HEAT going to war with each other.

I would be surprised if Thor wired both thermostats to run the furnace I don't have a 30.3; but only my Living room thermostat is wired to control the furnace.

I can run the furnace (Living room thermostat) and my bedroom AC (bedroom thermostat) if I wanted to. There is no damage concerns. My ACs are ducted together in ceiling so unless vents are closed in living room, it will get cold air from ceiling while hot air comes from the floor.

[16ACE27]

Originally Posted by Dan-sr@perra-us.net

I do not know where to post this question however this thread is closest to my concern.

I have a Thor ACE 30.3, It has,
Two AC units,
Two thermostats,
But only one furnace.

One thermostat runs the Bedroom AC the other thermostat runs the living area AC but, both thermostats apparently run the furnace.

So here is my question. Is there any potential for damage if one thermostat is set to heat while the other is set to cool?

Please keep in mind that I would never intentionally do this but, with young grandchildren around who might try to experiment with the HVAC system I think this is a valid question. Please resist the temptation to point out the obvious issue of the AC and HEAT going to war with each other.

Most dual A/C RVs only have one thermostat that operates the furnace. The other furnace only runs the A/C it is attached to. Have you physically verified they both run the furnace? Just because the thermostat says "HEAT" doesn't mean it's connected. I have no idea how they would even wire two different thermostats to control the furnace. What if one was set for 72 and the other was set for 80?

[cruzin101]

Originally Posted by Trophy1200

This is the one that I fitted to replace the front stat.Attachment 39754
Don’t let the price scare you, that’s Canadian dollars.

Perfect replacement. I've installed the cool only version for the rear AC. it works perfectly. Next I'll install the heat\cool version in the front on the main ac. I expect the same performance. it was a direct wire upgrade.

https://www.amazon.com/Airxcel-9430-...s%2C251&sr=8-1

[cruzin101]

Originally Posted by Trophy1200

This is the one that I fitted to replace the front stat.Attachment 39754
Don’t let the price scare you, that’s Canadian dollars.

Thanks! I'll give this a try for the main thermostat.

[cruzin101]

Upgraded both from and back now. Everything is working great! Thanks all!

[dkoldman]

Originally Posted by cruzin101

Upgraded both from and back now. Everything is working great! Thanks all!

Now that is cool

[Trophy1200]

[Dan-sr@perra-us.net]

Can A residential thermostat be used in place of the Coleman units my ACE 30.3 was delivered with? Do furnaces installed in RVs use the same type operations controls as residential furnaces?

[16ACE27]

Originally Posted by Dan-sr@perra-us.net

Can A residential thermostat be used in place of the Coleman units my ACE 30.3 was delivered with? Do furnaces installed in RVs use the same type operations controls as residential furnaces?

Yes, and No.

The thermostats work exactly the same but your RV thermostat uses 12 VDC supply and control power instead of 24 VAC. With that being said, there are many home thermostats that use batteries for memory and display that can be used in place of that Coleman Mach thermostat. I swapped mine out years ago for a Honeywell digital thermostat and it worked great until a few months ago when the TEMP DOWN button became intermittent and then stopped working altogether. I replaced it with this thermostat for under $40:

https://www.amazon.com/gp/product/B079Q5MKHQ/?th=1


Works on RVs and is easy to install.

[Chateau_Nomad]

Another vote for Honeywell. I replaced our entire HVAC system in the house, which came with a "free" all-the-bells-and-whistles thermostat.

So I made good use of the existing programmable home Honeywell thermostat and replaced the awful analog Coleman Mach in the motorhome with it. Works perfectly! I even use rechargeable Eneloop batteries in it.

The cool thing about Honeywell thermostats is they've been making thermostats longer than most of us have been alive. They must be making decent products to survive that long.

[Dan-sr@perra-us.net]

Originally Posted by 16ACE27

Yes, and No.

The thermostats work exactly the same but your RV thermostat uses 12 VDC supply and control power instead of 24 VAC. With that being said, there are many home thermostats that use batteries for memory and display that can be used in place of that Coleman Mach thermostat. I swapped mine out years ago for a Honeywell digital thermostat and it worked great until a few months ago when the TEMP DOWN button became intermittent and then stopped working altogether. I replaced it with this thermostat for under $40:

https://www.amazon.com/gp/product/B079Q5MKHQ/?th=1


Works on RVs and is easy to install.

Is there a cool only version for running the second AC unit?

[16ACE27]

Originally Posted by Dan-sr@perra-us.net

Is there a cool only version for running the second AC unit?

No, you can use that one to control just the A/C.

[Jimbo56]

There is a Coleman digital thermostat that will replace the analog. Got mine from Amazon. It was basically a wire swap. But I’m only controlling one AC and the furnace.

[First RV 4 me]

Everything posted is some good advice.. I installed a Micro-Aire Bluetooth/wifi unit. I now can change the temp without getting up from bed (glamping) and while driving (eyes off the road ?) eeks Up to 4 zones, I only have three. Wifi is great if your away and notifies you if you set parameters. BUT do your homework and select the correct unit or you will be having problems

[Chateau_Nomad]

A thermostat is essentially just a switch. How many bells and whistles you want is only limited by your budget.

If you figure out the wiring and understand how the thermostat works, you'll find there are a slew of residential thermostats that will also work.

But if tinkering isn't your bag, stick with RV specific ones.

[lwmcguir]

I changed over the cheap thermostats back when Wal-Mart first started up as a company

They imported cheap digital Chinese programmable units with batteries that would work on milivolt heaters or RV'S without a C wire

The upper end of those also displayed temperature, this was in the late 60's

So for over 50 years we have had and have digital thermostats in our various RV'S

Only a few now that aren't OEM digital

In our homes, I prefer the Honeywell 9000, simple to use, set up, and the software is easy to use controlling several thermostats in zoned homes