Replace The Orifice - Rinnai COMBI i060C Manuel

2. Replace the Orifice

1. Confirm that the inlet gas pressure is between the minimum and maximum pressures allowed for this boiler.
2. Disconnect electrical power to the boiler.
3. Turn off the boiler's gas supply by turning off the gas control valve.
4. Remove the boiler's front panel by removing the four screws that secure the panel.
5. Locate the orifice cover plate on top portion of gas valve (Figure 1).
6. Remove the three screws securing the orifice cover plate (Figure 1).
Figure 1
7. Remove the plastic orifice from the housing (Figure 2).
8. Install the new inner and outer gaskets onto the new orifice (Figure 2).
9. Install new orifice into housing (check the gas type displayed on the orifice: Red orifice is LPG; Blue orifice is NG).
10. Confirm gasket is correctly in place (the groove side of gasket must be facing outwards) (Figure 2).
11. Reinstall the orifice cover plate using the three screws to secure it to the gas valve.
12. Turn on the power and gas. Inspect for gas leaks.
13. Proceed to the next section (Adjust Parameter Settings).
Figure 2
Grooved side
of outer gasket
MUST be facing
outwards.
6
Orifice
Cover
Plate
Cover
Plate
Three screws
Orifice
Outer Inner
Gasket Gasket
Rinnai I-Series Boiler Conversion Manual