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Posted by tk03 on November 18, 2009 at 08:34:05:
In Reply to: Relining chimney for poor draft. posted by NHMatt on November 18, 2009 at 06:29:36:
The newer boilers require little draft. the Burnham MPO boiler uses the chimney is more of just a vent. The MPO requires "0" draft in the boiler so any negative draft is OK. The chimney may require a liner due to vent temperatures.