Rheem RTE 3, User Manual, Page: 12 / 16

12
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 1
1
/
2
to 2 minutes
130°F About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 1
1
/
2
seconds
155°F About 1 second
Table courtesy of Shriners Burn Institute
Routine Preventative Maintenance
Properly maintained, your water
heater will provide years of
dependable trouble-free service.
It is suggested that a routine
preventive maintenance program
be established and followed by the
user.
Normal Maintenance
Tankless water heaters are designed
for a very long service life.
Actual life expectancy will vary
with water quality and use. The
unit itself does not require any
regular maintenance.
However, to ensure consistent
water flow, it is recommended to
periodically remove scale and dirt
that may build up at the aerator of
the faucet or in the shower head.