Rinnai RUC80i Training Program page 19

Sight Glass Assembly Removal
1. Disconnect the flame rod wire (yellow) by pulling up.
2. Remove the burner thermocouple by removing the single attachment screw and pulling the
assembly out of the burner assembly. If the thermocouple needs to be completely removed
from the unit, follow the red and white wire harness until you come to a connector. Disconnect
the connector.
3. Disconnect the igniter electrode by pulling straight up on the heavy black wire. Remove the
silicon insulator boot by pulling out to the front.
4. Remove the sight glass
plate by removing the 5
screws securing it to the
burner assembly and
pulling the plate out away
from the unit.
NOTE: The gasket
underneath must be
replaced prior to
reassembly.
© 2016 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
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Enhancing Lives By Changing The Way Water Is Heated
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5/4/2018