Rinnai Demand Duo R Series Installation And Operation Manual page 32

Figure 29
Tankless flow rate
has dropped below
2.5 GPM
Tank Recovery
Pump Activated
□
A manual gas control valve is placed in the gas line to the water heater.
□
Check the gas lines and connections for leaks.
□
Confirm that the gas inlet pressure is within limits.
□
Confirm that the water heater is rated for the gas type supplied.
Confirm that the electricity is supplied from a 120 VAC, 60 Hz power source and is in a properly
□
grounded circuit.
Confirm that an extension cord or an adapter plug has NOT been used with the water
□
heater.
Demand Duo™ R-Series Installation and Operation Manual
Slow flash indicates
controller is active with no errors
Power supply is
working correctly
Displays set
temperature
32