Rinnai I Series, Installation And Operation Manual, Page: 107 / 136

Rinnai I - Series Condensing Boiler Combi Manual 107
ANNUALLY
Vent System
•
Inspect for blockages or damage.
•
Inspect vent screen or room air filter (if using) for debris and blockages.
Clean if needed.
Fan and Motors Clean dust and dirt from fan and motor (motors are permanently lubricated
and do not require lubrication).
Controller Clean by using a soft, damp cloth. Do not use solvents.
Pressure Confirm the pressure is within the proper range (between 17 - 26 PSI). If the
pressure is lower than the specified range, add water until in the proper range.
Pressure Relief
Valve Operate the pressure relief valve manually once a year. In doing so, it will be
necessary to take precautions with regard to the discharge of potentially
scalding hot water under pressure. Ensure discharge has a safe place to flow.
Contact with your body or other property may cause damage or harm.
Heating System
Filter
Clean annually. Be sure to close the shut off valves under the boiler. After
cleaning and installing the filter, purge the air.
DHW Filter If the flow volume of DHW is getting less, clean the filter at the DHW inlet. Be
sure to close the shut off valves on the DHW pipes under the boiler.
Expansion Tank Perform annual checks as recommended by the manufacturer to ensure proper
operation.
Condensation
Trap
Check if the trap contains sediment. To remove sediment, unplug the bottom of
the condensate trap. Remove the sediment, and then return the plug. Do not
use a wrench to tighten the condensate drain as this could cause the
connection to break.
Condensation
Drain
•
Confirm the condensation drain line is not blocked or clocked.
•
Ensure the condensation drain pump (if utilized) is working correctly.
Flushing DHW
Heat Exchanger Flushing for DHW (plate heat exchanger). When LC code appears, the boiler
detects lime scale accumulation. Once the flushing done, the LC code will
disappear automatically. If the boiler is installed in hard water area, Rinnai
recommends periodically flushing.
Draining Water When the system will be shutdown for a long period of time (seasonal
shutdown), close the shutoff valves below the boiler and drain the boiler to
protect it from potential freeze damage.
Testing the pressure relief valve should only be
performed by a licensed professional. Water
discharged from the pressure relief valve could cause severe burns
instantly or death from scalds.
WARNING