Setting The Clock; Operating The Heater Manually; Setting And Operating The Timers - Rinnai Energysaver ES38 Owner's Operation And Installation Manual

Setting the Clock

1. Press the "Set Times" button.
2. The light next to "Clock" should be lit. Press the up and
down arrows to set the time. Holding down either of the
arrow keys will change the time more quickly.
3. Press the "Set Times" button until none of the time options
are lit up.

Operating the Heater Manually

1. Turn the heater on by pressing the "ON/OFF" button.
2. Press the up or down arrows to set the temperature. The left display shows
the temperature setting. The right display shows the room temperature.
The thermostat automatically modulates the burner and the fan to maintain the
temperature setting.
The temperature settings available are:
• LO - burner is on minimum combustion
• 60° F - 80° F in two degree increments
• HI - burner is on maximum combustion

Setting and Operating the Timers

Confirm the clock is correct.
NOTE: The clock will have to be reset in
case of a power failure. However the timers
will retain their settings.
The heater will start before the programmed
starting time in order to heat the room by the
programmed starting time.
The timers can be set while the heater is on
or off. To operate the timer, the heater must
be on.
Setting the timers:
1. Press the "Set Times" button twice to set Timer 1.
2. The light next to "Timer 1 on" should be lit. Press the up or down arrows to set the start time. Holding down
either of the arrow keys will change the time more quickly.
3. Press the "Set Times" button again so that the Timer 1 off position is lit. Press the up or down arrows to set
the end time. Holding down either of the arrow keys will change the time more quickly.
4. Press the "Set Times" button again to set the times for Timer 2. Follow the same steps above to set the start
and end times.
5. Press the "Set Times" button until none of the time options are lit up.
Operating the timers:
To operate the heater using a Timer, press the ON/OFF button and the appropriate Timer button. The heater will
operate from the start to end times you have entered for that Timer. It will operate at the temperature setting that
has been set for the heater. The timer can be set while the heater is operating.
8
Timer 1 Timer 2
Rinnai Corporation ES38 Manual
AM
P M
Set
Temp
Time
AM
P M
AM
P M
Set
Temp
Time
Clock
Timer 1
on o
Timer 2
Room
Set Times
ON /OFF
Set
Room
Temp
Time
Clock
Timer 1
on o
Timer 2
Room
Set Times
ff
ff