McGiever wrote:Couple things I've not seen discussed:
Tell us about how you have your blower set-up? wired for all 3 speeds?, what speed are you using?
In a home situation return air is in upper 60's to 70's. You're way lower than this in a greenhouse.
Tell us how you operate your slide plate damper above fire box...before breech exit?
This is the 1602m with the dual blowers....I have a honeywell fan limit switch se at 150 on 110 off. Each blower is rated at 800cfm. I run both at night. I do notice the stack temp drop when I turn the second one on usually about a 30-40 degree drop. The greenhouse is heated by oil at night as well and the temp in there is 65 though the return air box for the Clayton is near the floor.
I pull the slide plate out when reload or starting up the coal. Once the stack reaches 350 degrees I close it. With 350 degrees stack temp, the furnace temp above the feed door will be around 400.
I do have an observation maybe other clayton owners have noticed this when facing the feed door, the left side of the furnace is hot. The suface temp was measured at 350 degrees, on the right side the surface temp is 250 degrees. Just an observation, was thinking of taking the side panels off tomorrow and checking the welds.
I cleaned the furnance out t'day checking the grates and the secondary air chamber, they seem fine.
Just as puzzled as ever