Rinnai Demand Duo R Series Installation And Operation Manual page 41

DANGER
Children, disabled, or elderly are at highest risk of
being scalded. Feel water before bathing or
showering.
1. If the water heater is off, press the On/Off
button to turn on.
2. If the Priority light is off, then press the
"Priority" button on the temperature controller.
The green Priority light will glow indicating
that this controller is controlling the
temperature and that the water heater is
ready to supply hot water. (The priority can
only be changed while no hot water is
running.)
Figure 35
Demand Duo™ R-Series Installation and Operation Manual
Water temperatures over
125°F (52°C) can cause
severe burns or scalding
resulting in death.
Hot water can cause first
degree burns with
exposure for as little as:
• 3 seconds at 140°F
(60°C)
• 20 seconds at 130°F
(54°C)
• 8 minutes at 120°F
(49°C)
❷
❶
3. Press the (Up ) or
obtain the desired temperature setting.
The temperature can only be changed when
either the "In Use" light or recovery pump are off.
Figure 36
❸
IMPORTANT
•
Check local codes for the maximum
water temperature setting allowed
when used in nursing homes, schools,
day care centers, and all other public
applications.
•
There may be a variation between the
temperature displayed on the
temperature controller and the
temperature at the tap due to weather
conditions or the length of pipe to the
water heater.
•
For applications that require less than
120°F, install thermostatic mixing
valve.
(Down) buttons to
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