Throughout life we come up with ideas concerning electrical installation that seem like a good idea and pursue making installations that end up being very dangerous.
No matter which thermostat you choose to use the bottom line is the installation must conform to the minimum safety standards set forth by the electrical codes in order to have a safe installation.
Should you choose to pursue this installation please understand that some form of disconnect must be installed within sight of the heating unit that disconnects all incoming lines that supply the heating unit or a lock out device must be installed at the breaker that supplies the circuit. This disconnect must have an absolute off position that cannot come on automatically.
1. If I can fuse this what kind of fuse can I use? (Most 20AMP fuses look pretty large) (Answer) The overcurrent device for the circuit will be all that you will need as long as the device is not larger than 20 amps
2. Are there any recommendations for other relay transformers? (Answer) Yes leave everything as it is and donít mess with it
3. Will the relay transformer put off a lot of heat to distort the thermostat? (Answer) Letís hope and pray that you donít try to install the transformer in the same enclosure as the thermostat.