Keltech, Inc. HL-Series Tankless Water Heaters are designed to accommodate most commercial fluid heating applications including: environments where demand is <25kW and total flow is ≤ 7 GPM, and environments where lower activation flows are required: standard units are .5 GPM with options as low as .15 GPM. HL-Series units are also suited
to applications where only single phase service is available or 3-Phase 208V, 240V and
480V, 50/60 Hz is required. HL Series 5-18 kW products include a NEMA 1 enclosure
as standard, with NEMA 4 and 4X options available. HL-25 units are standard NEMA 4.