Required Maintenance - Rinnai RL75i REU-VC2528FFUD-US Installation And Operation Manual

The appliance must be inspected annually by a licensed professional. Repairs and maintenance should be per
formed by a licensed professional. The licensed professional must verify proper opera on a er servicing.
WARNING
To protect yourself from harm, before performing maintenance:
Turn o the electrical power supply by unplugging the power cord or by turning o the electricity at the
circuit breaker. (The temperature controller does not control the electrical power.)
Turn o the gas at the manual gas valve, usually located immediately below the water heater.
Turn o the incoming water supply. This can be done at the isola on valve immediately below the water
heater or by turning o the water supply to the building.
WARNING
The following maintenance items are required for the proper opera on of your water heater.
The appliance must be inspected annually by a
licensed professional. Repairs and maintenance
should be performed by a licensed professional. The
licensed professional must verify proper opera on
a er servicing.
Cleaning
It is impera ve that control compartments, burners,
and circula ng air passageways of the appliance be
kept clean.
Clean as follows:
1. Turn o and disconnect electrical power. Allow to
cool.
2. Close the water shut o valves. Remove and clean
the water inlet filter.
3. Remove the front panel by removing 4 screws.
4. Use pressurized air to remove dust from the main
burner, heat exchanger, and fan blades. Do not
use a wet cloth or spray cleaners on the burner.
Do not use vola le substances such as benzene
and thinners. They may ignite or fade the paint.
5. Use so dry cloth to wipe cabinet.
Vent System
The vent system should be inspected at least annually
for blockages or damage. If the vent is blocked
contact a licensed professional.

Required Maintenance

Keep the appliance area clear and free from combus ble materials, gasoline, and other
flammable vapors and liquids.
Motors
Motors are permanently lubricated and do not need
periodic lubrica on. However you must keep fan and
motor free of dust and dirt by cleaning annually.
Temperature Controller
Use a so damp cloth to clean the temperature
controller. Do not use solvents.
Lime / Scale Build up
If you receive diagnos c code "LC#" (LC1, LC2,...),
refer to the procedure, Flushing the Heat Exchanger.
Refer to the sec on on Water Quality to see if your
water needs to be treated or condi oned. (When
checking maintenance code history, "00" is
subs tuted for "LC#".)
Snow Accumula on
Keep the area around flue terminal free of snow and
ice. The appliance will not func on properly if the
intake air or exhaust is impeded (blocked or par ally
blocked) by obstruc ons.
Clean the water filter
Clean the inlet water filter by closing the cold and hot
water inlet isola on (shut o ) valves. Put a bucket
under the filter at the bo om of the water heater to
catch any water that is contained inside the unit.
Unscrew the water filter. Rinse the filter to remove
any debris. Install the filter and open the isola on
valves.
VC Series Manual 39