My home made draft control for a Shaver OWB

[yellowrosefarm]

I finally finished and installed my version of a draft control on a Shaver OWB. The solenoid I got from grainger along with the larger fan unit (75cfm vs the 50 it came with). The 3" pipe and rain cap came from NAPA. I also put a gate latch on the door that closes when you slam it.

  

  

 

[thecfarm]

My Heatmor has flappers that open when the fans comes on. When I turn my light switch on that cuts power to the fans so if I'm filling it the fans can not come on.