Tankless Water Heaters - Commercial 208 Volt (AC) Operation, 240 VAC Rating 4 Chamber





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PRODUCT SPECIFICATIONS TABLE
COMMERCIAL 208 VOLT (AC) OPERATION, 240 VAC RATING

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Commercial and industrial locations are often served by 208 V three-phase electrical services. Where 240-V rated tankless water heaters are used at 208 V, their available wattage, and therefore their temperature rise, are de-rated by 25%. The table below shows which ratings are affected. Other specifications are the same as for 240 V operation.

FOUR CHAMBER MODELS

MODEL	RA-28	RA-22	RA-18
kW	21	16.5	13.5
Elements	7000 watts ' 4	5500 watts ' 4	4500 watts ' 4
BTU/hour	71670	56310	46070
kg-cal/min.	300	236	194
Temperature Rise	71 °F @ 2.0 GPM 57 °F @ 2.5 GPM 48 °F @ 3.0 GPM 36 °F @ 4.0 GPM 37 °C @ 8 L/min 30 °C @ 10 L/min 25 °C @ 12 L/min 19 °C @ 16 L/min	56 °F @ 2.0 GPM 45 °F @ 2.5 GPM 37 °F @ 3.0 GPM 28 °F @ 4.0 GPM 30 °C @ 8 L/min 24 °C @ 10 L/min 20 °C @ 12 L/min 15 °C @ 16 L/min	45 °F @ 2.0 GPM 36 °F @ 2.5 GPM 30 °F @ 3.0 GPM 22 °F @ 4.0 GPM 24 °C @ 8 L/min 19 °C @ 10 L/min 15 °C @ 12 L/min 12 °C @ 16 L/min
ELECTRICAL
V	208	208	208
A (max)	101	79	65
Hz	50 / 60	50 / 60	50 / 60
Circuits	30A x 4	50A x 2	40A x 2