It's a good idea to try the different combinations of on and off times to see how it behaves.
I set the boiler up as Matt discussed in this thread http://nepacrossroads.com/about22085-90.html
I have only tried 1 min on 8 off and the boiler worked well
The 30 sec on 4 min off seems to be working fine when I dump the ash bucket tomorrow I will check out for unburnt coal.
Under Matt's and Dave's set up discussion I seem to have about 1" of ash at the end of grate see pic for Apex of burn. So I feel Hi Fire is OK maybe back off from 12 turns to 11 I was at 13 two days ago and I saw some unburnt coal.
I too started with the dump zone setting around 210F and tried 220 and so on and ended up leaving it on 240, mainly for the summer for the extended times of no hot water or heat demand. I was getting stuck in a sequence where the dump zone would kick in, cool the boiler below the low limit, crank up the fire, hit the dump zone and so on again and again.... Raising the dump zone temp and increasing the "off" time helped keep me out of that.
I feel my L6006 high limit is way off on Sunday I'm going to check this out right now the Love TS2-10 is monitoring off the Source T as shown. I pulled that digital temp switch off my Tarm boiler.
When there is a call for heat and the boiler/zone settle down I see a 4deg F diff between the TS2-10 and the L7224C I dont pay attention to the analog temp gauge it's bit off. I'm burning rice from Country Meadows in Lancaster, PA. I believe Jane at CM said the coal came from S&T and both Nut for the hand fed appliances and the rice burn well no clinkers out of the WL110K or the nut burners.
I''m not hung up on any of this I like the boiler big time over the Tarm 202 hand fed I just want to get the L6006 to read a bit more accurate and I don't want to run the primary loop to achieve better accuracy of boiler temp.......guess I'm hung up on that.
When you mentioned purge I was not sure if you were purging your loops or actuating the pressure blow off near to the L6006A.
Yep left side port with forum member Plumber mod as seen in pic below. As I mentioned in my previous post I feel that 1.25 left side port/well is not air bound.
Anyway I'm very pleased with the boiler, plenty of DHW (50 Gal) with the Rheem and recharge ckt..........and I'm having some fun installing and learning about my system, my Pri/Sec Pump board works like a champ. I'm using Taco 1.25 scoop and Duovent Air Vents and will have the 1" recovered Taco air scoop/Duovent set up on the Tarm boiler once that is plumbed back in parallel with the WL110. The blue painters tape is to get a better reading with the IR temp gun.
I'll post some final pics once I clean up my wiring...........Dick