Orifice Plate - Rheem IKONIC RTGH-S11i Manual

IKONIC Tankless Water Heater Service Manual
HOW TO REMOVE COMPONENTS
ORIFICE PLATE (NAT/LP)
1. Locate the solenoid valve shown in figure below
and remove the connector with BLACK and YELLOW
wires.
NOTE: There is no need to remove any other wires or
connectors.
Connector
2. Locate the gas orifice block shown in the figure be-
low.
3. This component needs to be removed first, before
the orifice plate can be replaced. There is no need to
remove any other components
4. Remove gas orifice block by loosening the seven
"Pan Phillips head" screws shown above.
NOTE: Be careful not to damage the plastic Heat
exchanger elbow in front of the orifice block when
removing the orifice block.
Solenoid Valve
84
NOTE: Arrows on the front plate of the gas orifice block
shows the screws that need to be removed. DO NOT try
to remove any other screws.
5. The following figure shows the location of screws
and arrows. Once the screws are loose, carefully re-
move the gas orifice block so as not to damage the
solenoid valve or other parts. Save the screws that
were removed in a safe place.
6. Turn the gas orifice block so you can see the orifice
plate and the screw holding the orifice plate to the-
gas orifice block.
7. Remove the screw in the middle and remove the nat-
ural gas (or LP gas) orifice plate.
Natural Gas

Orifice Plate

Gas Orifice Block back view.
Screw