denis007 wrote:
Well I relocated the sensing bulb under the heater, no change. For testing purposes I heated the sensing bulb lightly with a propane torch's heat (not heating directly but letting the heat rise up to the bulb), and sure enough it kicked off. It was hot enough by then to be uncomfortable to touch, but tolerable, however way too hot to be of any use.
Going to try to locate a new gas valve with thermostat, it appears that it can be done, saw an example online of a different but comparable valve being used with a standard wired thermostat.
Humm, so it does work it just has to get hotter then original. Can you some how build a little mini duct from the furnace down to the bulb to get the bulb hot ?
I don't know how, I'm just brain storming. And my brain doesn't have very powerful storms. lol
Instead of a duct, what about a piece of copper that touches the plenum of the furnace and the other end touches the bulb ? It would transfer some heat.
In fact, if you used a piece of copper pipe from a home Propane system. (You know the pipe that once carried the propane and you found a old, unused, cut off, piece somewhere.) It would then transfer heat by both conduction and maybe convection too.
I do crazy stuff like this. lol
