Fire creep …I have my boiler set for 170 /10 …trouble is the "heat creeps up " after shut down, and makes my boiler blow off ! ( always at 4 am in the morning when I fine it btw), LAST nite> outside temp at 5 pm was 27 degs and my "zones" had just finished called for heat and were closing. Weather was a wind of 9 ta 16 mph Boiler water, after all day was 140 with only a oilcan size of wood/coal left = GOOD! I load 1, 6" log and 3, 2" and a 4" dry azz spruce and a couple 2by construction stud cut off’s of 2by6/8 . I close the door a turn on the blower and the fire gets a ripping and 20 min latter I’m at 170 deg /boom off goes the AQ-s . then the creep starts/ slow …the stove and fire brick in this 1200lb monster holds the heat well …..all the lines are insulated and I get NO temp change in the 120’ 1 ¼ of line in the loop GF alpha is running 6 gpm with the no call for heat. So last nite, while we were a sleep, the wind stopped and the outside temp went to a toasty 37 . So am I’m building a fire to big?? I’m at a ¼ load…AQ--s is good ….there is no leaks of air etc…the heat from the 20 min run ….just crept up till boom…(210) and it only happens < once a week thus far. My thinking to fix this is to place a AQ-s on the supplyline coming out the top of said boiler "set on" something like 200 with a diff of 15 or 20 ,which would turn on/open a zone valve and dump the spare 15 of heat into a unini heater /something till it hits <185 deg then close OR how’s about setting my AQ-s @t 150 / 5 leaving room for 50+degs of creep < cheap 2 !!
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Topic: fire creep... help! (Read 1364 times)