Rinnai RHFE-308 FTR - Manual (Page 40)

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GAS PRESSURE SETTING
1. With your manometer gauge zeroed and connected to both
pressure taps, press the On/Off button and operate appliance.
2. Press the SW1 test switch. 78 or 7 will be displayed on the
incidator LED.
3. Press the SW1 switch again to put the appliance in Low
pressure mode. PL will appear on the LED display.
4. Adjust the low pressure using the UP and DOWN arrows until
the pressure differential shown on the manometer is:
Gas Pressure Nat. Gas Propane
Low Pressure 1.6 mbar 2.7 mbar
5. Press the Economy button. The LED will then display 18 indicating that
the low pressure has been recorded into memory.
6. Next press the SW1 switch twice. This puts the unit in high fire mode.
PH will be displayed on the LED.
7. Set the high fire pressure using the UP and DOWN arrows and the
manometer to get the following values.
Gas Pressure Nat. Gas Propane
High Pressure 5.7 mbar 9.2 mbar
8. Press the Economy button to enter the high fire pressure into the memory. The LED display wil indicate 78.
9. Press the On/Off button again. The LED display goes blank and the unit returns to the normal OFF mode.
10. Reconfirm all pressure settings before putting unit back into operation. Disconnect manometer from the
unit and replace the screws. Leak test all connections.
11. After completion of gas pipe connections all joints including the heater must be checked for gas tightness.
12. Visual check for proper main burner flame appearance.
VISUAL CHECK
SATISFACTORY
FRONT VIEW
UNSATISFACTORY
FRONT VIEW
RoomTemp
Set Temp
RoomTemp
Set Temp
RoomTemp
Set Temp
Temp
Control