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Electric Mode
Control checks T2
(tank sensor)
T2
less than set
temperature
Upper Element on until
T2 reaches set
temperature minus 7F
(T2 = ST-7F)
Lower element on
until T2 reaches set
temperature
T2 is less than set
temperature minus 25F
(T2< ST-25F)
T2 is less than set
temperature minus 5F
(T2< ST-5F)
Has there
been a flow
event?
T2 is less than set
temperature minus 1F
T2 < ST-1F
No
Yes
Water temperature 5°F less than set point? Use lower element.
Water temperature 1°F less than set point and water has been used? Use lower element.
Water temperature 25°F less than set point? Use upper element until 7°F less than set point, then: Use lower
element.
(Continued Next page)
