GAS PRESSURE SETTING
The working gas pressure on the water heater is electronically controlled and factory set. Under normal circumstances it does not require adjustment during installation. Perform this procedure only if the unit is not operating correctly and all other possible causes for incorrect operation have been eliminated, or you have
converted the Gas Type.
Contact Rinnai UK before attempting to alter the gas pressure.
Turn the appliance to the OFF position.
1. There are two test points, one on the heat exchanger, one | Adjusting screw | |
on the gas manifold. Connect a differential pressure gauge | ||
| ||
between both test points. (Connect one side of the gauge | Manifold | |
Gas Valve | ||
to one point, the other side of the gauge to the other). If | ||
Test | ||
you are using an electronic manometer, connect the - | ||
point A | ||
side to the heat exchanger test point. | Test point B | |
|
2. When the unit has completely stopped press and hold the SW1 test switch at the top of the PCB until it beeps.
3.Select the correct gas type code on the LED display using UP and DOWN arrow buttons. Current selected gas type will be indicated.
L1: LPG gas, short flue
L2: LPG gas, extended flue over 2.0m
A1: Nat. Gas, short flue
A2: Nat. Gas, extended flue over 2.0m | TEST SW(SW1) |
4.After selecting the appropriate gas setting above, press the SW1 test button to record the gas type code into the memory. The
LED will then display the F1 for proper Flue Block Function. If it is not, set the display to the F1 by using the UP and DOWN arrows.
5.Press the SW1 test button to enter the proper Flue Block Function into memory.
6.Next the Temperature Classification code will appear on the LED display. Using the UP and DOWN arrows select Celsius.
7.Press the SW1 test button to enter your selection into the memory.
| Set Temp |
THE LED DISPLAY TURNS BLANK AND THE UNIT RETURNS TO | RoomTemp |
| |
THE NORMAL OFF MODE. YOU ARE NOW READY TO | Temp |
PROGRAM IN YOUR CORRECT LOW FIRE AND HIGH FIRE GAS | Control |
PRESSURE SETTINGS. FOLLOW PROCEDURE BELOW FOR |
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SETTING THE MANIFOLD DIFFERENTIAL GAS PRESSURE. DO |
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NOT ADJUST GAS PRESSURE ON THIS APPLIANCE USING THE APPLIANCE REGULATOR SCREW.
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