I got into a debate recently with a manufacturers rep who air balances his own kitchen equipment regarding the operation of a backward inclined centrifugal fan serving a kitchen hood. He told me that the motor was drawing higher amps when operating backwards than when it was operating in the...
I am currently trying to assist an owner with determing the reason for the continued failure of their domestic hot water heat exchangers. These are U-tube and bundle type HX's with the primary heating hot water circulating outside the tube bundle in the jacket. The tubes on the domestic water...
