Vacuum Pump Selection Data
Very similar to the Condensate Pumps
Voltage- Needs to be exact example
230-3-60 not 230/460-3-60
Simplex or Duplex
Load - Typical units include EDR, BTU, Pound /HR
Back Pressure - Usually gravity return but can discharge into a pressurized return main. Need Static+ lift + distance and size pipe.
CFM is sized per ASHRAE we will take care of that
Float Switch Starts and Stops the Pump Simplex Units or a Mechanically Alternating float Switch (Mechanical Alternator) for Duplex Units.
Vacuum Switch and Gauge
Always requires Starters and are included