HS Tarm draft question

[waynecub]

Hi Everyone.
I have a HS Term solo plus 30 MKll
This older boiler works great with no storage. I only build small fires only because I'm around all the time. So here is my question has anyone ever change the draft fan to a DC volt and put on a small VFD to control the fan speed that the temp. of the water will control? I think that I would like to try this but thought I should ask you guys what you think. As the temp. gets close to the set point the fan would slow down.
marcus

 

[TCaldwell]

I’ve done it on my garn, although it’s a 56c frame 1 hp motor, I use a gs2 inverter. I sourced them at automation direct.