Honeywell RTH5100B Thermostat
The thermostat upgrade is a very common upgrade and lots of information is available on this forum. I wanted to add the specific model I used for others that may be searching.
Honeywell RTH5100B 1025 Deluxe Manual Thermostat
I picked this specific model because it had the "automatic" switching between heat and a/c. In Spring and Fall the day and night temperatures can vary significantly.
This model is also battery operated so there is no need to power the unit separately; just make sure you keep extra batteries on hand. My next mod may be to take a variable voltage regulator (LM317) and connect it to the 7.5v supply provided for the Duo Therm and power my Honeywell.... But this is not a priority.
Please note that your wire colors may vary. With this configuration you will lose the HI/LO fan option. This will give high fan only.
There are other posts in this forum that will show you how to add a separate switch to maintain the dual fan settings.
The original analog Duo-Therm by Dometic
Duo-Therm Wiring
Honeywell Wiring
Honeywell Installed
Wiring Diagraim
It is important to note that you will need to follow the setup guide to select the correct parameters. For example: the auto feature where it switches between heat and cooling is disabled by default.
Honeywell RTH5100B 1025 Deluxe Manual Thermostat
I picked this specific model because it had the "automatic" switching between heat and a/c. In Spring and Fall the day and night temperatures can vary significantly.
This model is also battery operated so there is no need to power the unit separately; just make sure you keep extra batteries on hand. My next mod may be to take a variable voltage regulator (LM317) and connect it to the 7.5v supply provided for the Duo Therm and power my Honeywell.... But this is not a priority.
Please note that your wire colors may vary. With this configuration you will lose the HI/LO fan option. This will give high fan only.
There are other posts in this forum that will show you how to add a separate switch to maintain the dual fan settings.
The original analog Duo-Therm by Dometic
Duo-Therm Wiring
Honeywell Wiring
Honeywell Installed
Wiring Diagraim
It is important to note that you will need to follow the setup guide to select the correct parameters. For example: the auto feature where it switches between heat and cooling is disabled by default.
