Rinnai EX08DT Installation And Operation Manual page 31

5.4.2 Lock
The Lock feature will help to prevent accidental
operation of the furnace and to prevent
children from operating the furnace.
To activate Lock, press the Lock button. The
indicator will light and a beep will sound.
To deactivate Lock, press the Lock button and
hold for about 2 seconds. The indicator light
will go out and a beep will sound.
 The lock can be activated when the
furnace is ON or OFF.
 If activated while the furnace is ON, all
controls other than the OFF switch will be
locked.
 If activated while the furnace is OFF, then
all controls will be locked.
 If the furnace is turned off while the Lock is
activated, it cannot be turned on again until
the lock is deactivated.
 Deactivating the lock releases the control
buttons.
Figure 32
5.4.3 Set the Clock
1. Press the "Program" button.
Figure 33
2. The light next to "Clock" should be
flashing. Press the up and down arrows to
set the time. Holding down either of the
arrow keys will change the time more
quickly.
Figure 34
EX08DT and EX11DT Installation and Operation Manual
3. Press the "Program" button until none of
the time options are flashing.
Figure 35
5.4.4 Operate the Furnace
Manually
1. Turn the furnace on by pressing the "ON/
OFF" button.
2. Press the up or down arrows to set the
temperature. The left side of the display
shows the temperature setting. The right
side of the display shows the room
temperature.
Figure 36
The thermostat automatically modulates the
burner and the fan to maintain the
temperature setting.
The temperature settings available are:

L - burner is on minimum combustion

60-80ºF (16-26°C) in 2ºF (1°C)
Increments

H - burner is on maximum combustion
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