Rinnai Tankless Water Heater Installation and Operation Manual
53
6.
6. Maintenance
Maintenance
Topics in this section
•
Maintenance
•
Flushing the Heat Exchanger
• Draining the Water Heater
6.1 Maintenance
This water heater must be inspected annually by
a trained and qualified professional. Repairs and
maintenance shall be performed by a trained and
qualified professional. The trained and qualified
professional must verify proper operation after
servicing.
To protect yourself from harm, before performing
maintenance:
•
Turn off the electrical power supply by un
-
plugging the power cord or by turning off
the electricity at the circuit breaker. (The
temperature controller does not control
the electrical power.)
•
Turn off the gas at the manual shutoff
(control) valve, usually located
immediately below the water heater.
•
Turn off the incoming water supply. This
can be done at the isolation valve immedi
-
ately below the water heater or by turning
off the water supply to the building.
Keep the appliance area clear and free from
combustible materials, gasoline, and other
flammable vapors and liquids.
The following maintenance items are required for
the proper operation of your water heater.
CLEANING
It is imperative that control compartments
inside the cabinet, burners, and circulating air
passageways of the appliance be kept clean.
BURNER
Check burner flame for proper color. The flame
must burn with a clear, blue, stable flame.
Once ignited, the flame must cover the surface
of the burner. If the flame does not have this
appearance, complete the following steps:
1. Turn off and disconnect electrical power. Allow
to cool.
2. Remove the front panel by removing two latch
style clips at the top and two screws at the
bottom of the water heater.
3. Use a vacuum to remove dust and debris from
the main burner and fan blades on the burner
or distribution plate (bottom). DO NOT
use a
wet cloth or spray cleaners on the burner.
DO
NOT use volatile substances such as benzene
and thinners; they may ignite or fade the paint.
4. Use soft dry cloth to wipe the cabinet.
VENT SYSTEM
Periodic cleaning and inspection of the vent
system is needed, and includes the screens in the
vent termination.
The vent system should be inspected for
blockages including snow or other debris or
damage. If the vent is blocked and cannot be
easily cleared, contact a trained and qualified
professional.
MOTORS
Motors are permanently lubricated and DO NOT
need periodic lubrication. However you must keep
fan and motor free of dust and dirt by cleaning
annually.
WARNING
WARNING
