denis007 wrote:
westend wrote:
It appears that the "temperature" knob is just a valve. Does the furnace have a lower flame when the "temperature" knob is set at Low?
No. The Temp dial turns heater on when turned up (you hear a noticeable click) then the burner kicks on. There is no middle ground, it's on, or it's off.
That really doesn't answer the question of the flame height. I understand that it increases the delivery from the valve so that the main flame ignites. I just wondered if you've ever looked at the flame to assess if the temp knob can control the flame intensity. I'd bet dollars to doughnuts that it does.
Here's a scenario: Even with the temp knob turned down to a lower position, the furnace may give off enough heat to warm the cabin and keep warming to too high an interior temp. This would be especially true with a mislocated or malfunctioning sensing tube. If the temp knob can be rotated so the main flame goes off and the furnace idles on pilot, the furnace may keep the interior comfortable for a long time.
