- Water Feeder Port Connection 1/2 Inch Soldered Flow Rate 1 GPM Input Supply Rating 120 Volt AC 60 Hertz 15 Volt Amp Temperature Rating 150 Deg F (Fluid) Media Handled Steam, Water Inclusions/Features Universal Compatibility, Digital Feed Counter, Call-For-Feed Indicator, Manual Feed Button, Underfeed Protection, Lock-Out Flood Protection Application Residential Applicable Standard UL Ambient Temperature 100 Deg F