TYPE LRV - LOW RETURN VACUUM CAST IRON
This is a Low Return Vacuum heating unit with a combination air and water pump that performs both the condensate and vacuum pumping functions. The multi-jet design has proven to be an effective and reliable means for removing air and lifting hot condensate in the return system. A standard cast iron receiver is included along with a standard 20-year warranty against corrosion failure for years of serviceabiity. The standard unit is configured for usage with low returns and system capacities ranging up from 2,500 square feet EDR; air pumps range up from 3 cubic feet per minute (cfm) at 5-1/2" HG at 160°F. The unit is completely packaged along with electrical controls.
These units are available in either simplex or duplex design with either 1750 RPM or 3500 RPM motors in single or three phase. The pumps are flange mounted to the receiver and are equipped with industry standard motors. The pumps are bronze-fitted with a removable bronze wearing ring and with mechanical seals rated for temperatures up to 250°F. Higher temperature seals and special faces are also available upon request.