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Electrical Connections
System Controller
The system controller maintains communication between the tank and tankless via the tankless communication cable
to effectively control the tank temperature based on the selected temperature on the tankless unit.
The system controller will energize (120V) the pump when the tank temperature drops. When the tank temperature
returns to the selected set temperature, the system controller will de-energize the pump and remain in standby until
the tank temperature drops again.
ATTENTION
Controller Diagnostics
Tankless Flow Rate has
dropped below 2.5 GPM
Tank Recovery Pump
Activated
44
When power is supplied, the system controller will maintain pump operation. If system is
not in use for an extended period of time, disconnect power from the system.
Slow flash indicates
controller is active with
no errors
Rinnai Commercial Hybrid System Installation and Operation Manual
Power supply is
working correctly
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