boiler high and low installation specification

Consulting - Specifying Engineer | Smart Boiler Specifications

Mar 01 2006 · Typical for small boilers (up to 1000000 btu/hr) the burner is cycled on or off to maintain required pressure (steam) or temperature (hot water). This method may not be favorable due to inefficient cooling of heat-transfer surfaces within the boiler. High/low fire. The oil or gas burner has two preset firing rates: high and low.

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