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Old 05-09-2017, 07:14 PM
Eben Horton Eben Horton is offline
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interesting observation after a furnace rebuild

I just completed a full rebuild of my furnace, minus the side walls and side insulation. new everything else. Before the rebuild, the furnace was taking for ever to come up to charging temp due to a cracked crown, a crumbling burner port and a cracked door. But... it was melting beautiful glass.

the first charge on the rebuilt furnace was highly disappointing when i looked at the glass the next day. Then I realized that the furnace is performing so well now that the lag times to get hot increased my cook times without me realizing it.
for example- before the rebuild, it would take about 2.5 hours to come up from 2000° to 2300°. Now it takes about 30 minutes tops.. and i am not exaggerating. So now i have to re write my charging program to give it a longer hold at 2300° to let the glass fine out more before it comes back down.

Thought Id share...
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Old 05-09-2017, 11:26 PM
Jordan Kube Jordan Kube is offline
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2.5 hours is a loooooong time for a gas furnace to get to that temp. Make yourself a note and put it next to the controller.
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