1004Rfa, 1004Fta - Rinnai RHFE-551FA Service Manual

Gas Pressure Setting Procedure
CAUTION
Do not insert hands or objects into the circulation
fans while they are running. Injury or mechanical
malfunction may occur.
CAUTION
Do not touch the areas at or near the heat
exchanger or burner. These areas become very
hot and could cause burns.
7. Press the ON/OFF button to operate the
appliance.
8. Press the SW1 switch. The LED will display
"78" or "7 ".
9. Press the SW1 switch again to change to the
low pressure mode. The LED will display
"PL".
10. Compare the pressure reading on the
manometer to the correct table for your gas
type. If necessary adjust the low fire pressure
using the ▲ and ▼ buttons.
11. Press the Economy button. The LED will
display "18" indicating that the low pressure
has been recorded into memory.
12. Press the SW1 switch TWICE. This puts the
appliance into the high fire mode. The LED
will display "PH".
13. Compare the pressure reading on the
manometer to the correct table for your gas
type. If necessary adjust the high fire
pressure using the ▲ and ▼ buttons.
14. Press the Economy button to enter the high
fire pressure into memory. The LED display
will display "78". If the LED shows any thing
other than "78" call Rinnai Technical Support
at 1-800-621-9419 for assistance.
15. Press the ON/OFF button again. The LED
display turns blank and the appliance returns
to the normal OFF mode.
17. Remove manometer and install Allen head
screws. Operate the unit and
•check the normal operating sequence
•visually inspect the flame
•check for gas leaks at the test points
98 Rinnai Direct Vent Service Manual
Normal Operating Sequence
When you press the ON/OFF button, the LED display
will illuminate, the combustion fan will begin to run,
and the spark will ignite the main burner.
This heater has an automatic ignition system. When
the main burner has lit, the combustion lamp will glow
red, and the spark will stop.
Visual Inspection of Flame
Check that the burner flames are operating normally.
The flame can be seen through the circular window
through the louvers.
When operating normally the burner flame should
appear as long, clear, blue, stable, streaks. Yellow
flames or an orange color is abnormal and
maintenance is required.
Final Assembly
Install the front panel and bottom cover.
RHFE-1004FA