Rinnai RHFE-1004FA Conversion Manual page 4

GAS PRESSURE SETTING AND ADJUSTMENT
1. Turn the appliance to the off position.
2. Remove test point screw 1/8 NPT tap with 3/16 Allen
wrench and connect manometer pressure gauge.
3. When unit completely stops operating, press the "SW1"
test switch at the top of the PC board until it beeps.
4. Select the correct gas type code to appear on the LED
display using " " (up) and "
Current selected gas type code will be indicated.
See below for descriptions.
L1: Propane gas units at normal altitude.
L2: Propane gas units at high altitude.
A1: Natural gas units at normal altitude.
A2: Natural gas units at high altitude.
5. After selecting the appropriate gas setting above, press the
"SW1" test button to record the gas type code into
memory.
THE LED DISPLAY TURNS BLANK AND THE UNIT RETURNS TO THE NORMAL OFF MODE. YOU ARE NOW
READY TO PROGRAM IN YOUR CORRECT LOW FIRE AND HIGH FIRE GAS PRESSURE SETTING.
FOLLOW PROCEDURE BELOW FOR SETTING THE MANIFOLD GAS PRESSURE.
DO NOT ADJUST GAS PRESSURE ON THIS APPLIANCE USING THE APPLIANCE REGULATOR SCREW.
6. With your manometer gauge zeroed and connected, press
the ON/OFF button and operate furnace.
7. Press the "SW1" test switch. "78" or "7 " will be displayed
on the indicator LED.
8. Press the "SW1" switch again and change to Low
pressure mode.
"PL" will be indicated on the display.
9. Record your pressure reading on your manometer.
If the Low fire pressure needs adjusting, this can be
achieved by pressing the "
pressure or the "
Set unit to correct pressure as shown the Technical Data.
10. Press the Economy button, the LED will then display "18"
indicating the low pressure has been recorded into
memory.
11. Next press the "SW1" switch twice, this puts you into the
high fire mode. "PH" will be indicated on the LED display.
12. Adjust the high fire pressure using the "
increase the pressure and the "
pressure.
Set unit to correct pressure as shown The Technical Data.
" (down) buttons.
" button to decrease the
" button to increase the pressure.
" button to
" button to decrease the
– 3 –
TEST SW(SW1)
LED DISPLAY