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What is the best method for sizing a power venter to any type of appliance, whether gas fired of oil fired?

April 26, 2017appliance best fired Gas method Oil power sizing type venter

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What is the best method for sizing a power venter to any type of appliance, whether gas fired of oil fired?

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The best way to size a power venter is by input BTU (if gas) and maximum GPH (gallons per hour), if oil. If oil-fired system take into account the pump pressure. For example the firing rate of an appliance with 1.00 GPH and a pump pressure of 140 PSI will be equivalent to 1.20 GPH firing rate. Sizing a power venter to the down-fired rate is not recommended. Also, do not size an oil-fired appliance by the BTU rating. In the oil heat industry most people speak of BTU output, which is a smaller number. Going by maximum GPH rating cuts out the confusion between input and output.