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Let it stand for 15 minutes longer

Let it stand for 15 minutes (longer does not work any better). Some fan-assisted, non-condensing furnaces and boilers, installed between 1987 and 1993, may be vented horizontally through high-temperature plastic vent pipe (not pvc pipe, which is safely used in condensing furnaces) this type of venting has been recalled and should be replaced by stainless steel vent pipe if horizontal venting was used, an.

Added: 2020-05-08 | Comments: 0 | Category: one