Info from Mfg Website

The PWP Series is a self contained system designed for applications where hot water is needed on a constant basis with a smaller 300 gallon (1,135.62 liter) tank.

The Sioux PWP water heater includes two pumps, one to circulate water through the heater and one to discharge water from the system.

This system is ideal for precast/ pre-stress concrete producers.

1.2 Million BTU/hr.

LP

Standard with seven-stage circulation pump(s) and one single-stage discharge pump.

Cold water lockout- prevents cold water mixing with hot water.

Third party approved to UL508A and CAN/CSA-C22.2 No. 14-10, ensuring that the entire control panel assembly meets the UL and CSA standards.

Used