NWBuilder wrote:Hi everyone, I will try to answer all of the latest inquiries as I am still having fits over this issue. For the summer I have been running the boiler at 160*. Someone suggested this as it has worked out well for them. My required load is just for DHW, part of the reason for the excessive use of coal is I keep the temp set at 70 and open the windows so that there is a call for heat in the over night. Seems to help somewhat. I have taped of my baro damper and the clean out. Yesterday I had a negative draft situation but the boiler continued to run. I checked it when I got home from work yesterday around 6:30 and I had a nice blue fire going and some red coals. It was out by midnight! I am going to order a LOGO timer and hope for the best. I have been working crazy hours to make up for a lousy Winter and Spring so I have just basically been struggling along relighting every couple of days. Not much fun. Oh and even when it is burning what I consider to be well, I still get a lot of un burnt or partially burnt coal. There we have it! Have a great 4th!! Ken
Surely there was a call for boiler heat between 6:30pm and midnight
Few thoughts, are you keeping the hopper lid in place and sealed well?
The fan could very well pull air down through coal in hopper if it provides less resistance instead of pulling the air through the coal in fire pot from below.
Your ash quantity and spent coal might be a little too tight and or thick
for the easier air path.
Try poking a steel rod or bar down through view port towards the bottom of fire-pot...let it stay in for a few minuets and then pull it back out to see how deep the hot coals are by viewing the red glow of the steel.
And, Oh, have you considered calibrating your ashing setting for gross error? It just might surprise you what it really is compared to it's read-out displays.
Don't get hung up with thinking that the factory could never have screwed anything up with your boiler.
And, *lsayer* brings up a important point about aquastats being miss identified from the factory in his previous post, Quoted here below.
This was discussed in another thread as well.
Another thought, for your other problem (out-fires):
I had completely forgotten about this. The latest iterations of the S130 operating manual all have the aquastats reversed as to which is to be the operating limit aquastat and which is to be the high limit aquastat. The L4006A should be your operating limit aquastat, and the L4081B should be your high limit aquastat (with the other half of this dual aquastat operating your dump zone). The only out-fire I ever suffered happened early on when I had my aquastats set up per the manual and its wiring diagram. As soon as I conferred with AHS and learned that the aquastats are listed incorrectly in the manual, I switched them, and the boiler has never gone out since. My L4006A has been set at 180 degrees ever since then. The fan comes on at 170 degrees, and shuts off at 180 degrees. I don't want to mess with success and lower the L4006A's setpoint for the summer, as some would do. My L4081B is set to cut off the fan if it is still running when the boiler hits 210 degrees (I.E., it only kicks in to save the day as my emergency back-up if the L4006A fails to shut off the blower fan at 180 degrees).