Rinnai RHFE-1004FA, Conversion Manual

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RHFE-1004FA CONVERSION

1. Remove two (2) screws that hold the front panel in place.

2. Pull panel forward from the top of unit out about three

inches. Reach inside electrical compartment and unplug
the indicator lamp assembly. Then lift panel up and set it
off the unit. Next remove both side panels.

3. Remove all three (3) gas tubes from the unit. Be careful

not to lose the “O” rings on each end of the gas tubes.
Always ensure there is an “O” ring in each port of the gas
valve and in each of the orifices before reinstalling gas
tubes.

4. Replace all three burner orifices with the proper size

required for gas type being used. Refer to the Technical
Data.

The low fire orifice has a longer shoulder than the high
fire orifices. When converting products, please ensure
you follow instructions in detail. YOU MUST
READJUST MANIFOLD GAS PRESSURE on the
appliance following manufacturer’s instructions and
replace all three burner orifices and reset air shutters.
Failure to follow the manufacturer’s instructions may
result in damage to the unit. If you have not been
properly trained on converting this product, please do
not proceed. Contact a qualified service agency to
perform conversion.

5.

Propane gas unit air shutter settings:

Loosen set screw on air adjustment rods. Adjust all three
air shutters to 100% air, no notches will be showing on the
rods when adjusted correctly. The air rods can be found
directly under each gas line at the combustion chamber.
Retighten set screw once adjustments have been made.

Natural gas unit air shutter settings:

Loosen set screw on air adjustment rods. Adjust the right
rear and left hand air shutters to 100% air, no notches will
be showing on the rods when adjusted correctly. Adjust the
right front air shutter to where three (3) notches are
showing, this is 70% air. The air rods can be found directly
under each gas line at the combustion chamber. Retighten
set screw once adjustments have been made.

6. Ensure all three gas tubes have been re-installed and

tighten. Leak test all gas tube connections to ensure
“O”rings were reinstalled and all fittings have been
retightened.

7. Gas pressure 

MUST

be readjusted when converting from

one gas type to the other. Follow the procedure below
when setting pressures.