Digital Thermostat

AngelBok · Post by **AngelBok** » May 29th, 2019, 2:02 am

I have a digital thermostat with three wires, purple, yellow and black. How am i supposed to connect it in the circuit?

I would appreciate the help...

jfgagnon

Vionykak · Post by **Vionykak** » February 4th, 2019, 10:27 pm

Evening all, could anyone help
I’m looking to install my heat exchanger soon and am currently running all the services from the house to the filter bay, how many core cable do I need for the digital thermostat?

Hotrock59 · Post by **Hotrock59** » August 19th, 2017, 10:51 am

Here are the links for the controller and t-stat if you have a Coleman Mach series system, by the way this mod controls the gas furnace as well, a welcome benefit.....Coleman 8530A3451 Digital Thermostat,Coleman 9330C755 Control Box, sold by Amazon, sorry the links would not work.

Hotrock59 · Post by **Hotrock59** » August 19th, 2017, 10:39 am

Leave the old manual control knobs in place on your rooftop unit, with today's quality control standards you never know when an electronic part will fail, if out on the camping trip you could swap the 115 v power back to the old control in 15 minutes and be back in business! Also, I have part numbers for the new control box,electric strip and digital t-stat if anyone is interested just pm me.......

uct · Post by **uct** » September 24th, 2015, 10:23 pm

Installed my new honeywell 5/2 digital thermostat today. Everything works good heat and ac. I was even able to use the old mounting holes.

jcarlilesiu · Post by **jcarlilesiu** » August 21st, 2015, 12:36 am

moallen wrote:My 24rls has a Coleman Mach 13,500 btu a/c and an Atwood 19,000 btu furnace. It has an AP7862-4 analog thermostat. I was looking into doing something with the thermostat for a different reason. It would be nice to be able to turn the a/c off remotely during a phone call, not to mention turning the furnace on from bed in the morning. Anyway, here's the wiring diagram for the thermostat. I think this is pretty much standard on systems with a Coleman.

ap7862_wiring.jpg
A new thermostat wouldn't have to have both high and low fan connections, but it would be nice. That's only for the a/c unit. The furnace has its own automatic fan.

As far as a remote, I think a person could simply turn the +12 to the thermostat on and off. It would control both cold and heat depending on which way it is switched.

This is HUGELY helpful. Thank you.

Now the question is, how to route the wiring to the Coleman Mac AC, and where to find a blank off panel for the manual controls.

N7VDR · Post by **N7VDR** » August 20th, 2015, 4:37 pm

Or get a wifi thermostat and control it from your phone like i do at home.

moallen · Post by **moallen** » August 20th, 2015, 11:53 am

My 24rls has a Coleman Mach 13,500 btu a/c and an Atwood 19,000 btu furnace. It has an AP7862-4 analog thermostat. I was looking into doing something with the thermostat for a different reason. It would be nice to be able to turn the a/c off remotely during a phone call, not to mention turning the furnace on from bed in the morning. Anyway, here's the wiring diagram for the thermostat. I think this is pretty much standard on systems with a Coleman.

: ap7862_wiring.jpg (18.92 KiB) Viewed 6789 times

A new thermostat wouldn't have to have both high and low fan connections, but it would be nice. That's only for the a/c unit. The furnace has its own automatic fan.

As far as a remote, I think a person could simply turn the +12 to the thermostat on and off. It would control both cold and heat depending on which way it is switched.

N7VDR · Post by **N7VDR** » August 20th, 2015, 2:18 am

Is your ac tied in to your current thermostat? if so this honeywell t_stat will work

jcarlilesiu · Post by **jcarlilesiu** » August 20th, 2015, 2:11 am

I gotta get this done but need to figure out how the reconfigure the 13.5 Coleman mac to tie in as well.

Starcraft RV Owners Forum