Rinnai REU-V2520FFU Operation & Installation Manual page 22

M A I N T E N A N C E & S E R V I C E I N F O R M A T I O N
MAINTENANCE SUGGESTIONS
This water heater has been designed and constructed
for a long performance life when installed and operated
properly under normal conditions. Regular inspections,
as outlined in this section, are strongly recommended
as a means of keeping your heater operating efficiently.
Consideration should be given to periodic maintenance
of scale removal in applications where the water
hardness quality is elevated and the water heater
runs for extended periods such as in commercial
applications or applications with circulating loops.
1. Cleaning
The water heater should be cleaned annually.
Keep the water heater clear of dust and debris
especially in and around burner.
Cleaning procedures for the Rinnai Water Heater
are as follows:
1) Turn off and disconnect electrical power. Allow
to cool for one hour.
2) Remove the Front Panel by removing screws.
See parts breakdown on panels.
3) Use pressurized air to remove dust from around
main burner.
4) Use soft dry cloth to wipe cabinet.
DO NOT DAMAGE OR DISTORT ANY PARTS
OF HEATER.
DO NOT USE WET CLOTH OR SPRAY
CLEANERS ON BURNER.
2. Visual check of main burner flames.
The burner must flame evenly over the entire
surface when operating correctly. The flame must
burn with a clear, blue, stable flame. See the parts
breakdown of the burner for the location of view
ports. Any and all parts removed for inspection or
service must be replaced before operating the unit.
The flame pattern should be as shown in the
following Figures.
Rinnai America
* VENT MAINTENANCE
* VENT SYSTEM
Must be checked annually for
blockage or deterioration. See
vent installation instructions.
* MAINTENANCE-ELECTRIC
MOTORS
Motors are permanently
lubricated and need no
lubrication. Keep fan and motor
free of dust and dirt, clean
annually.

FF Models