Freeze Protection - Rinnai CX199i Installation And Operation Manual

FREEZE PROTECTION

Make sure in case of freezing weather that the water heater and its water lines are adequately protected
to prevent freezing. Damage due to freezing is not covered by the warranty. Refer to the "Freeze
Protection" section (Section 4.3 Choose an Installation Location > Freeze Protection). The water heater
may be drained manually. However, it is highly recommended that drain down solenoid valves be
purchased and installed, which will automatically drain the water heater if power is lost. (The condensate
trap drain plug and Pressure Relief Valve are not affected by the auto drain down solenoid valves and will
have to be manually opened.)
WINTERIZATION
The following recommendations are intended to suggest practices that are effective for winterizing the
water heater. They should be used as a guide only. No liability is assumed for any issues resulting from
the use of this information.
Note: See section "6.4 Draining the Water Heater" for detailed instructions on:
• Draining the water heater
• Running a low volume of water through the water heater to prevent freezing
•
Steps to take when the water heater or external pipes have frozen
INSPECTION
• To maintain optimum performance,
periodically inspect the air filter.
•
If the air filter appears to have lint and/or
dust build up, follow the cleaning
procedure described below.
•
If the air filter appears damaged, contact
a trained and qualified professional for a
replacement air filter assembly.
CLEANING
1. Power OFF the water heater:
•
Push the "On/Off" button located on
the right-hand side of the controller.
The display will go blank when the
power is off.
2. Remove the front panel:
• Remove the two screws securing the
front panel and release the two
latches.
• Remove the front panel and locate the
filter at the upper right-hand corner of
the water heater.
• Remove the air filter by pulling out the
"FILTER Pull to Clean" tab.
3. Clean the air filter:
•
With mild dish soap and a soft bristle brush, scrub the filter area of the air filter door.
•
With clean water, rinse the soap off the filter.
4. Dry the air filter:
•
With a lint free towel, dry the air filter.
5. Inspect and Replace the air filter:
• Inspect the air filter for any debris that may restrict air flow to the water heater.
• If the filter still appears dirty repeat the cleaning steps.
• Replace the air filter.
6. Install the front panel and power ON the water heater.
86
Figure 93
DO NOT operate this water heater if the
air filter is not in place.
Rinnai Tankless Water Heater Installation and Operation Manual
IMPORTANT