Author Topic: Thermostat Wiring  (Read 969 times)

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Thermostat Wiring
« on: October 27, 2019, 08:18:14 PM »
Here the deal my new ride has 3 zones with AC,heat pumps and the Aqua Hot with sensors in different areas all controlled by 1 thermostat, My question is can I use a separate thermostat to control the Aqua Hot it is a real PITA to tell the thermostat to fire the Aqua Hot you need to change the mode everytime when going from the heat pumps to the Aqua Hot plus the thermostat is not very accurate either  (RV Comfort 20 thermostat)

thanks
Life is short drink the good wine first

Online richard5933

  • Hero Member
  • *****
  • Posts: 2689
Re: Thermostat Wiring
« Reply #1 on: October 28, 2019, 02:48:18 AM »
Any chance that they terminated the wiring coming from the different units in an accessible place? Like maybe behind the thermostat? That would make it easy.

One potential problem is having the different systems fighting each other if they are set to opposite systems (heat vs cool) inadvertently.
Richard
1974 GMC P8M4108a-125 (Custom Coach "Land Cruiser")
1964 GM PD4106-2412 (Former Bus)
Located in beautiful Wisconsin
KD9GRB

Offline RichardEntrekin

  • Full Member
  • ***
  • Posts: 204
Re: Thermostat Wiring
« Reply #2 on: October 28, 2019, 04:37:39 AM »
The short answer is yes, you can use a separate thermostat. It needs to be a 12 VDC model.

There are a couple of challenges you may face. If your new ride has different heat zones then you will need sep tstats for those zones OR standalone temp sensors.

And be aware that on some Aquahots, they used a ground to turn the unit on and off. There is a little trick of using a standard Bosch cube relay triggered by 12V positive to activate the relay, but the relay contacts actually make to ground in order to trigger the control circuit.
Richard Entrekin
99 Newell, Detroit S 60
Subaru Outback toad
Inverness, Fl

Often wrong, but seldom in doubt

Offline sledhead

  • Hero Member
  • *****
  • Posts: 1249
Re: Thermostat Wiring
« Reply #3 on: October 28, 2019, 05:10:37 AM »
on my old aquahot system all the tstats used the ground , so yes to the cube relays . the problem I found was for the water heater system to work the bathroom heat loop had to run so there was heat transfer for the water heater ? so this meant that in the heat of summer the ac was on and the floor and cozy heaters were hot ?? . The only saver was the fan behind the heaters was not on so to not move the heat around ?

my new system will make hot water heater only if I want it . way less on and off with the boiler and no more hot floors ! in the middle of a heat wave

dave 
dave , karen
1990 mci 102c  6v92 ta ht740  kit,living room slide .... sold
2000 featherlite vogue vantare 550 hp 3406e  cat
1875 lbs torque  home base huntsville ontario canada

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Re: Thermostat Wiring
« Reply #4 on: October 28, 2019, 06:56:48 AM »
Ok is there a better brand of thermostat besides the RV Comfort on the market,my floor heat is controlled by the Silver Leaf so that is not a problem
Life is short drink the good wine first

Offline Geoff

  • Hero Member
  • *****
  • Posts: 1926
    • Geoff & Sherry's RTS Conversion Pics
Re: Thermostat Wiring
« Reply #5 on: October 28, 2019, 01:01:29 PM »
Its been a while since I dealt with this but Walmart used to sell a wall thermostat that worked on 12v for under $20.
Geoff
'82 RTS AZ

Offline chessie4905

  • Hero Member
  • *****
  • Posts: 4813
Re: Thermostat Wiring
« Reply #6 on: October 28, 2019, 04:12:36 PM »
Maybe one of these will fill the bill...


https://www.smartrving.net/best-rv-thermostats/
GMC h8h 649#028 (4905)
Pennsylvania-central

Offline RichardEntrekin

  • Full Member
  • ***
  • Posts: 204
Re: Thermostat Wiring
« Reply #7 on: October 30, 2019, 04:15:36 AM »
Not trying to be a knucklehead. But the author of that article listed Honeywell models as being 12V compatible. That raised my interest. Honeywell site says they are 24VAC only. They may work on 12 VDC, but that would have to be tested.
Richard Entrekin
99 Newell, Detroit S 60
Subaru Outback toad
Inverness, Fl

Often wrong, but seldom in doubt

Offline chessie4905

  • Hero Member
  • *****
  • Posts: 4813
Re: Thermostat Wiring
« Reply #8 on: October 30, 2019, 06:30:31 AM »
I think I would go to the Honeywell site and verify and review all that they offer.
GMC h8h 649#028 (4905)
Pennsylvania-central

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Re: Thermostat Wiring
« Reply #9 on: October 30, 2019, 06:51:36 AM »
I need to have 1 thermostat that will control the 3 zones.AC,heat pump and the Aqua hot  for the 3 zones so far it has been the RV Comfort is all I can find,I wish it had a thermostat for each zone life would be easy 
Life is short drink the good wine first

Offline DoubleEagle

  • Hero Member
  • *****
  • Posts: 1640
  • BCM Subscriber
Re: Thermostat Wiring
« Reply #10 on: October 30, 2019, 08:26:47 AM »
If you have only one thermostat for the whole coach, it might not be correct to say that you have three zones, since you only have one temperature sensor to turn things on and off. In a house situation zones refer to thermostats being on different levels or areas of the house, with different temperature settings possible in each zone. In your case, you have three possible sources of heating or cooling, and the coordination of which one comes on is not working well. My 1984 Eagle has a MemphisAire A/C Electric furnace combo that is split between the baggage bay and the living area. It has one digital thermostat to regulate the temperature, but you have to slide a switch whether you want A/C or heat. Having two sources of heat is the confusing factor in your case.

You need to find someone who has great knowledge of control systems that also happens to own a bus with mechanical problems that he can't figure out, or arrange to trade your new coach for a really special Eagle that has a 600 hp CAT (pre EGR), and excellent heating and cooling. But then, why would someone with an Eagle like that ever trade for a Country Coach?  ::)

Just had a thought, what about Nick Badame, maybe he could guide you.
Walter
Dayton, Ohio
1975 Silvereagle Model 05, 8V71, 4 speed Spicer
1982 Eagle Model 10, 6V92, 5 speed Spicer
1984 Eagle Model 10, 6V92 w/Jacobs, Allison HT740
1994 Eagle Model 15-45, Series 60 w/Jacobs, HT746

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Re: Thermostat Wiring
« Reply #11 on: October 30, 2019, 08:58:37 AM »
I have 3 zone sensors 1 at the front ,1 in the middle and 1 in the bed room,I have total coach control by Sliver Leaf to control the floor, I have no idea what controls the bay heat it comes on automatic when the temperature reaches 35, I have 2 manuals as thick as a Houston phone directory  so I have a lot of reading to do, I will figure this thing out once I learn how to turn the TV on  ;D I did get the theater surround system on watching a movie then could not turn it off.I like this Country Coach Walter it drives and rides like a dream all the electronics will take time for a old dog   
Life is short drink the good wine first

Offline Van

  • Hero Member
  • *****
  • Posts: 2678
  • PRESS here *repeatedly to ignore
Re: Thermostat Wiring
« Reply #12 on: October 30, 2019, 09:41:04 AM »
  No worries Clifford, we'll help ya sort it out. ;) ;) :)
Doin' what ever they say cannot be done, Daily.
Boulder City, Nevada.

Offline mmanning

  • Jr. Member
  • **
  • Posts: 58
Re: Thermostat Wiring
« Reply #13 on: October 30, 2019, 02:58:31 PM »
I did a little poking around today, but didn't find any thermostat that would better match with your Aqua-Hot.  Since Aqua-Hot and Coleman are owned by AIRXCEL, the RV Comfort 20 thermostat keeps coming up in each search I have done.  You do have Coleman air conditioners, right?

I thought for a minute that the Furrion CHILL Multi Zone Wall Thermostat might work, but from what I am seeing it probably only works well with Furrion equipment and has only basic integration with non Furrion heating systems.

Perhaps you can integrate your Aqua-Hot with your Silver Leaf system.  Here is a link I found for the Silver Leaf Aqua-Hot module: http://tech.silverleafelectronics.com/node/281  I don't really know anything about Silver Leaf beyond what I have read, but maybe this could be an option..

Also, you may already know this; but there is a section of the Silver Leaf technical resources where you can look up information about your new ride: http://tech.silverleafelectronics.com/node/27
Stewartville, MN (just south of Rochester, 1.5 hours south of Minneapolis)
78’ Silver Eagle Model 05
8v71 no turbo
Allison HT740-D
My Bus

Offline DoubleEagle

  • Hero Member
  • *****
  • Posts: 1640
  • BCM Subscriber
Re: Thermostat Wiring
« Reply #14 on: October 30, 2019, 03:13:26 PM »
Well then, thank goodness you have complete manuals with good wiring diagrams, I hope. Yes, old Eagles are a lot simpler, but you have a lot of new things to explore now and keep you active.  :D
Walter
Dayton, Ohio
1975 Silvereagle Model 05, 8V71, 4 speed Spicer
1982 Eagle Model 10, 6V92, 5 speed Spicer
1984 Eagle Model 10, 6V92 w/Jacobs, Allison HT740
1994 Eagle Model 15-45, Series 60 w/Jacobs, HT746

Offline Dave5Cs

  • Hero Member
  • *****
  • Posts: 3896
  • BCM Subscriber
Re: Thermostat Wiring
« Reply #15 on: October 30, 2019, 03:15:05 PM »
"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
 1998 Jeep TJ & 2002 Buick Century, Roseville,CA
Congressmen should wear uniforms, like NASCAR drivers, so we could identify their corporate sponsors

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Re: Thermostat Wiring
« Reply #16 on: October 30, 2019, 03:21:44 PM »
Thanks Mike I do have the SliverLeaf total coach system like in the second link it's nice to monitor everything in the coach from the drivers seat or the panel in the hall, the smart tire feature is great too,lol the generator run time is nice but I forgot about it and the generator started last night at 6 pm from me fooling with it 
Life is short drink the good wine first

Offline chessie4905

  • Hero Member
  • *****
  • Posts: 4813
Re: Thermostat Wiring
« Reply #17 on: October 30, 2019, 03:27:15 PM »
Just get an Alexa with smart receptacles and thermostats and tell her which system to turn on in what order and at what temperature. Course, you'll need internet....
GMC h8h 649#028 (4905)
Pennsylvania-central

Offline RichardEntrekin

  • Full Member
  • ***
  • Posts: 204
Re: Thermostat Wiring
« Reply #18 on: October 30, 2019, 04:26:55 PM »
Clifford,

There may be alternate ways to accomplish your needs. Do you just need an on off switch to tell the AH to heat the water? If so, it’s pretty straight forward to do that.

You could also mount three standalone tstats IF the standalone will allow remote sensor input. Don’t know if that would meet the approval of the bridal unit.




Richard Entrekin
99 Newell, Detroit S 60
Subaru Outback toad
Inverness, Fl

Often wrong, but seldom in doubt

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 21818
Re: Thermostat Wiring
« Reply #19 on: October 31, 2019, 06:14:52 AM »
The A/H heats the water fine lol I don't how to turn it off yet lol.I talked to Martin Perlot the owner of Silver Leaf he going to check and see if we can run it with the Silver Leaf,dealing with 3 different type of heat, the floor,heat pumps and the Aquahot is above my pay scale
Life is short drink the good wine first

Offline chessie4905

  • Hero Member
  • *****
  • Posts: 4813
Re: Thermostat Wiring
« Reply #20 on: October 31, 2019, 06:51:33 AM »
I would worry about Silverleaf running some of that. If it goes fubar, does it defer to manual control?
GMC h8h 649#028 (4905)
Pennsylvania-central