Conversion Procedure - Rinnai RHFE-263FA II Conversion Manual

Confirm that the inlet gas pressure is between the minimum and maximum pressures allowed for this appliance.
Gain Access
1. Hold both ends of the bottom cover (Undercover
assembly) and pull toward you to remove the
cover. Cover snaps in place.
2. Remove the 7 screws that hold the front panel and
the louver assembly to remove panel from the unit.
Pull the panel out at the bottom about 4 inches
(100mm) and lift up over clips that hold it in place at
the unit's top.
3. Remove 1 screw from the bracket with the overheat
switch. Place bracket to the side out of your way.
Replace Components
Refer to the Technical Data and Parts List to ensure to
the correct injectors and dampers are installed.
1. Remove the 2 manifold screws. Rotate the
manifold and connecting tube to access the
injectors.
2. Replace the 2 injectors with the proper size for the
gas type to be used.
3. Remove the burner screw from the burner
assembly.
Flame view port
Electrode and leads

Conversion Procedure

The gas supply shall be shut off prior to disconnecting the electrical power, before
proceeding with the conversion.
Primary
damper
Rinnai Corporasion RHFE-263FAⅡ Conversion Manual
Bracket
4. Replace the primary and secondary dampers with
the dampers for the gas type to be used. (Pull the
secondary damper straight out using the tab on the
side.)
5. Install the manifold (2 screws) and overheat switch
bracket (1 screw).
6. Confirm that the electrode and leads are installed.
7. Complete the procedure, Adjust Gas Pressure
Settings.
Manifold screw locations
Burner screw
Secondary
damper tab
Louvers
Bottom cover
Front panel
Injectors