Tankless Water Heaters - Commercial 208 Volt (AC) Operation, 208 VAC Rating 4 Chamber





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PRODUCT SPECIFICATIONS TABLE
COMMERCIAL 208 VOLT (AC) OPERATION, 208 VAC RATING

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Commercial and industrial locations are often served by 208 V three-phase electrical services. Tankless water heaters are available with 208 V heating elements that are 10 to 15% lower wattage than the 240 V elements. Therefore the heater’s temperature rise is lower. The table below shows which ratings are affected.

FOUR CHAMBER MODELS

MODEL	RA-28	RA-22	RA-18
kW	24	20	16
Elements	6000 watts ' 4	5000 watts ' 4	4000 watts ' 4
BTU/hour	81910	68260	56600
kg-cal/min.	342	285	236
Temperature Rise	81 °F @ 2.0 GPM 65 °F @ 2.5 GPM 54 °F @ 3.0 GPM 30 °F @ 4.0 GPM 42 °C @ 8 L/min 34 °C @ 10 L/min 27 °C @ 12 L/min 21 °C @ 16 L/min	64 °F @ 2.0 GPM 51 °F @ 2.5 GPM 42 °F @ 3.0 GPM 31 °F @ 4.0 GPM 33 °C @ 8 L/min 26 °C @ 10 L/min 22 °C @ 12 L/min 17 °C @ 16 L/min	52 °F @ 2.0 GPM 42 °F @ 2.5 GPM 34 °F @ 3.0 GPM 25 °F @ 4.0 GPM 27 °C @ 8 L/min 22 °C @ 10 L/min 18 °C @ 12 L/min 13 °C @ 16 L/min
ELECTRICAL
V	208	208	208
A (max)	115	96	77
Hz	50 / 60	50 / 60	50 / 60
Circuits	30A x 4	50A x 2	40A x 2