Electric Tankless Water Heater Point-of-Use Water Heater Application Emergency Eye Face Drench Showers Commercial Watts - Water Heaters 64 000 Amps - Water Heaters 178 Voltage - Water Heaters 208 Min Flow Activation 2.50 gpm Phase - Water Heaters 3 Temp Range - Water Heaters 60 Degrees to 90 Degrees F Water Connection 1-1/4 in NPT Temp Rise @ 6.0 GPM 72 Degrees F Temp Rise @ 2.5 GPM - Water Heaters 90 Degrees F Temp Rise @ 4.0 GPM 109 Degrees F