Before Installation; Maintenance - Rinnai DONSR20Z9 Operation & Installation Manual

3.

BEFORE INSTALLATION

The operating temperature range under which the unit runs stably are given in Table 2 below.
Table 2.
Mode
Cooling
If the indoor humidity is above 80%, condensation may
Heating
The unit performs stably in the temperature range given in above table. If the indoor temperature is
outside the unit's normal operating range, it may stop running and display an error code.
CAUTION
To ensure the desired temperature
is achieved efficiently, ensure that:
• All windows and door are closed.
• The airflow direction is adjusted to
work in running mode.
• The air filter is clean.
Please note how you can best
save energy and achieve the best
cooling/heating effect.
• Regularly clean air filters inside
indoor units.
Avoid too much outdoor air coming
into air-conditioned spaces.
4.

MAINTENANCE

Please release pressure before disassembly.
Before you clean the air conditioner, ensure it is powered off.
CAUTION
Check that the wiring is undamaged and connected.
Use a dry cloth to wipe the indoor unit and controller.
A wet cloth may be used to clean the indoor unit if it is very dirty.
Never use a damp cloth on the controller.
Do not use a chemically treated duster on the unit or leave this type of material on the unit to avoid
damaging the finish.
Do not use benzene, thinner, polishing powder, or similar solvents for cleaning. These may cause the
plastic surface to crack or warp.
4.1 Maintenance after a long period of non-use
(a) Check for and remove anything that might be blocking the inlet and outlet vents of the indoor units and
outdoor units.
(b) Turn on the power at least 12 hours before you want to use the unit to ensure it works properly. As soon
as the power is turned on, the control display appears.
Rinnai
Indoor temperature
17-32°C
form on the surf ace of the unit.
≤ 27°C
Check
regularly
Close doors
and windows.
Note that outlet air is cooler or
warmer than set room
temperature. Avoid direct
exposure to outlet air as it may be
too cool or hot.
Do not set
the temperature
too low
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Maintain a proper air
distribution. Air outlet louvers
should be used to adjust the
direction of outlet airflow, as
doing so might ensure more
efficient operation.