Maintenance - Rinnai HDC 1600i Low NOX Installation And User Manual

The appliance must be inspected, repaired and maintained by a licensed professional. The licensed
professional must verify proper operation after servicing.
For more detailed instructions on maintenance contact Rinnai or your supplier.
Cleaning
It is imperative that control compartments, burners, and circulating air passageways of the appliance
be kept clean.
Clean as follows:
1 Turn off and disconnect electrical power. Allow to cool.
2 Close the water shut off 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 volatile substances such as benzene
and thinners. They may ignite or fade the paint.
5 Use soft dry cloth to wipe cabinet.
Vent System
The vent system should be inspected at least annually for blockages or damage.
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.
Temperature Controller
Use a soft damp cloth to clean the temperature controller. Do not use solvents.
Lime / Scale Build-up
If you receive diagnostic code "LC#" (LC1, LC2,...), refer to the procedure, Flushing the Heat
Exchanger. Refer to the section on Water Quality to see if your water needs to be treated or
conditioned. (When checking maintenance code history, "00" is substituted for "LC#".)
Snow Accumulation
Keep the area around flue terminal free of snow and ice. The appliance will not function properly if the
intake air or exhaust is impeded (blocked or partially blocked) by obstructions.
Clean the water filter
Clean the inlet water filter by closing the cold and hot water inlet isolation (shut-off) valves. Put a
bucket under the filter at the bottom 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
isolation valves.
Visual Inspection of Flame
Verify proper operation after servicing.
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 the view ports. The flame pattern should be as
shown in the figures a side.
Flushing the heat exchanger
An LC0~LC9 or "00" or 58 diagnostic code indicates the unit is
beginning to lime up and must be flushed. Failure to flush the
appliance will cause damage to the heat exchanger. Damage
caused by lime build-up is not covered by the unit's warranty.
Rinnai strongly recommends installation of isolation valves to
allow for flushing of the heat exchanger.

MAINTENANCE

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