Connect the module wires to the PC Board located
inside the water heater:
• For SENSEI™ Tankless Water Heaters, follow
steps in section 3(A) (next page).
• For all other Rinnai Tankless Water Heaters,
see section 3(B).
Replace and tighten the four (4) screws on the
water heater cover.
Plug in the water heater power cord.
Turn on the water heater by pressing the On/Off
button on the water heater controller.
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