Robertshaw 41-401 Hot Surface Ignitor On a 1/2" and 3/4"
Baker’s notes & crumb story
Description
Robertshaw 41 401 Hot Surface Ignitor On a 1 2" and 3 4" On a 1 2" and 3 4" V 3100 or V 3800 Series Valve measure across the junction block terminals while the pilot is lit