Rinnai Tankless Water Heater Installation and Operation Manual
81
6.
6. Maintenance
Maintenance
Topics in this section
•
Maintenance
•
Cleaning and Inspecting the Air Filter
(Indoor Units Only)
•
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 gas 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.
The appliance 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.
CLEANING
It is imperative that control compartments, burners,
condensate collection and disposal system, vent
screens and circulating air passageways of the
appliance be kept clean.
BURNER
Check burner flame for proper color. Once ignited,
the flame must cover the surface of the burner.
The flame must burn with a clear, blue, stable
flame. 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 four
screws.
3. Use a vacuum to remove dust from the main
burner and fan blades. 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 cabinet.
CONDENSATE COLLECTION AND
DISPOSAL SYSTEM
Periodic inspection and cleaning of the
condensate collection and disposal system.
Ensure condensate is flowing and the end of the
drain is open to the atmosphere.
VENT SYSTEM
Periodic cleaning and inspection of the vent
system including 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.
WARNING
WARNING
