Why must condensate pumps used with condensing furnaces be approved for furnace condensate use?
A) The condensate from a furnace is mildly acidic and can damage the materials in some condensate pumps.
B) The condensate from a furnace is flammable and only furnace-rated condensate pumps can pump flammable liquid.
C) The condensate from a furnace is mildly alkaline and can damage the materials in some condensate pumps.
D) The furnace manufacturer will void the warranty if the wrong condensate pump is used.
A
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