Rinnai Control-R - How On-Demand Recirculation Works

Recirculaon with On-Demand Accessories User Guide
5
The on-demand accessory is acvated (push buon is pressed,
moon sensor acvated, etc.)
A request (not a command) is sent to the water heater to turn on
the pump. In other words, the push buon or moon sensor is
asking the water heater if the pump can turn on to start
recirculaon.
With built-in Circ-Logic, the water heater decides (based on me
intervals and current water temperature) if the pump can turn
on. The water heater either ignores or accepts the request from
the recirculaon accessory.
If the water heater accepts the request to start recirculaon, the
pump turns on and runs for ve minutes or unl the water
temperature is reached (whichever occurs rst).
Aer recirculaon completes, the pump enters into a mandatory
dormant (inacve) state. During this me, the pump will not
turn on for any reason, even if the push buon or moon
sensor is acvated.
The pump remains dormant for the congured me intervals.
See Visual Illustraon on Next Page