Rinnai I Series Installation And Operation Manual page 108

Pump Lock Confirm the pump operates smoothly. The boiler operates pump lock operation
at least in 48 hours for all of system pumps. If it is pump locked, rotate the cap in
front of pump by flat driver.
Water Quality Confirm the water quality. Refer to section "4.4.1 Water Quality Guidelines" to
determine if the water needs to be treated or conditioned. DHW must be
potable, free of corrosive chemicals, sand, dirt, or other contaminates. It is up to
the installer to ensure the water does not contain corrosive chemicals or
elements that can affect or damage the heat exchanger. Water that contains
chemicals exceeding the levels required affect and damage the heat exchanger.
Replacement of the heat exchanger due to water quality damage is not covered
by the warranty.
•
Snow Verify the area around the flue terminal is free of snow and ice. The boiler will
Accumulation not function properly if the combustion air or exhaust vent pipes are impeded
(blocked or partially blocked) by obstructions.
•
Verify the condensate drain line is free of snow and ice. Ensure the line is not
blocked or clogged and that condensate is flowing freely.
•
Freeze Freeze protection for new or existing systems must use glycol that is specially
Protection formulated for this purpose. This includes inhibitors, which prevent the glycol
from attacking the metallic components. The glycol should be for multi-
metallic components. Reference section "14.1 Approved Cleaners, Inhibitors
and Antifreezes" in the Appendix for an approved list of system cleaners,
inhibitors, and antifreezes.
•
Check that the system fluid is correct for the glycol concentration and inhibitor
level. The system should be tested at least once a year and as recommended
by the producer of the glycol solution. The allowed maximum concentration is
40 percent.
Coast Area Installations located in or near coastal areas may require additional maintenance
Installations due to corrosive airborne ocean salt. If corrosion is observed on the body of the
boiler, the boiler shall be inspected to ensure proper operation and repaired or
replaced, if necessary.
Cleaning It is imperative that control compartments, burners, and circulating air
passageways of the boiler be kept clean. 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:
•
Turn off and disconnect electrical power. Allow to cool.
•
Remove the front panel.
•
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.
•
Do not open the burner cabinet and touch the burner surface.
Condensate Trap Cleaning:
•
Inspect the condensate drain assembly inside the boiler and your external
drain system.
•
Remove any debris that may be present in the condensate removal system.
108 Rinnai I-Series Condensing Boiler Combi Manual