Rinnai EX08DT Installation And Operation Manual page 34

5.4.8 Economy (Energy
Saving Mode)
The Economy mode can only be
set while the furnace is
operating (heating). Once it is
set, it will remain in the system
memory until deactivated.
1. To turn the Economy mode
on, press the "Economy"
button. The Economy
indicator is lit.
 The Economy mode now remains in the
system memory.
 If the furnace is turned off manually, or
stops heating as a result of an OFF timer
period, the "Economy " indicator will go
out.
 Whenever the furnace starts heating
again, the "Economy" indicator will light.
2. To turn the Economy mode off, press the
"Economy" button. The "Economy "
indicator will go out.
 The Economy mode can only be turned
off while the furnace is operating
(heating) and when the "Economy"
indicator is lit.
Economy Mode Information
After the room is heated initially, the air
temperature may be dropped to a lower level
without affecting comfort. The Economy Mode
reduces the temperature by 2 ºF, 30 minutes
after the room temperature setting is reached.
After another 30 minutes, it reduces the
temperature setting by another 2 ºF, effectively
saving energy. The room temperature setting
will drop up to a total of 4 ºF.
The Economy Mode will not operate if the
furnace is under capacity for the room size.
Figure 45: Economy Mode
34
5.4.9 Set Back
This function allows a minimum room
temperature to be pre-set, between 38ºF and
78ºF (in 1ºF increments) This temperature
should be set below the room temperature
setting. The default setting is 60ºF. Once the Set
back function is selected the furnace will start
heating whenever the room temperature falls
below the selected temperature, regardless of
timer or manual settings.
Follow these steps to set and operate the Set
Figure 44
back feature:
1. Make sure the furnace is
turned OFF.
2. Press the "Set back" button.
The light above the button will
come on.
3. Press the up and down buttons to set the
minimum temperature.
When the "Set back" indicator is on, frost
protection is operating, and will always prevent the
room temperature from falling below the pre-set
minimum temperature (as long as electric power
and gas is supplied).
To turn this feature off, press the "Set back" button.
The unit will retain its ON or OFF setting after a
power failure. (Default setting at the factory is on.)
The Set Back feature is intended to prevent
the installation location from falling below a
specified temperature. It is not intended as an
alternate thermostat, but rather a preventative
measure against freezing.
EX08DT and EX11DT Installation and Operation Manual
Figure 46
Figure 47
Figure 48
IMPORTANT