Originally posted by Astrodokk
Excellent! Just what I was looking for! I was wondering about electronic ignition. I guess what I read was when the LPG valve is turned off for an extended amount of time, then one must go outside to the furnace and open it manually before being able to use thermostat. Thanks for the info.
The fact that the bottles were turned off for a time mainly affects the refrigerator and non-electronic water heaters. This is because the pilot orfices on these burners are so small that it takes some time to evacuate the air.
Electronic ignition furnaces and water heaters, OTOH, have quite a large orifice and are designed with repetitive sparking so that the air is quickly exhausted and they light.
For instance, after storage, the light on my water heater stays on just a couple of extra seconds compared to later relights.