Vacuum Condensate Return Systems

System backpressure can be calculated by totaling the sum of 3 discharge side components.

Vacuum condensate return systems. V series systems are produced with capacities to 150 000 edr. Skidmore condensate return units are manufactured in both the 10mx and v series models. The vcd include durable cast iron receivers warranted for 20 years against failure due to corrosion. Pumps sized at two times the normal condensing or evaporation rate based on a quicker return rate of the condensate than non vacuum condensate units.

The series vcd vacuum heating unit is designed for large systems through 150 000 sq. A pumping system is required to transport and recover condensate once the system backpressure becomes higher than the lowest possible trap inlet pressure. 10mx series models are available with pump capacities up to and including 15 000 edr. There may be times when the vacuum pump is called upon to lift condensate.

There seems to be a common misconception among operators of low pressure steam heating systems that the purpose of the vacuum is to draw the condensate back. Using a pump to overcome return line backpressure. Make sure the inlet height is lower or equal to existing height on gravity return systems water does not run uphill. In a properly designed system the condensate flows by gravity to the receiver with one exception.