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Configuration
The configuration switches are on the back of
the thermostat. The factory settings are indi-
cated by the grey cells in the following table.
a
SW1 Early Start
SW2 Display format
b
SW3 Cycle length
c
SW4 Keypad lock
a. Early Start can be used in Automatic mode only. When this func-
tion is enabled, the thermostat calculates the optimal time to start
heating in order to obtain the desired temperature by the set time.
The thermostat re-assesses the start time daily based on the pre-
vious day's performance.
b. Select short cycles in most cases as it provides better tempera-
ture control. However, you must select long cycles if you have a
fan-forced heater. The word FAN is displayed when long cycles
are selected.
c. The settings are locked. The temperature adjustment buttons
only allow you to view the temperature setpoint.
Clock and Day Setting
Press the Hour button to set the hour.
Press the Min button to set the minutes.
Press the Day button to set the day.
Press the Mode button to end.
Daylight Savings Time
The thermostat can automatically re-adjust its clock at Daylight Sav-
ings Time changeover. When this function is enabled (On), the ther-
mostat switches to Daylight Savings Time on the second Sunday of
March and to normal time on the first Sunday of November.
NOTE: The function is disabled (default setting) when the clock loses
its setting.
Press the Day button (3 seconds) until DLS appears
on the screen.
Press either of the
buttons to toggle between On
(enabled) and Off (disabled).
Press the Day button briefly. The year setting is dis-
played.
Press either of the
buttons to set the current year.
Press the Day button briefly. The month setting is dis-
played.
Press either of the
buttons to set the current
month.
Press the Day button briefly. The date setting is dis-
played.
Press either of the
buttons to set the current date.
Press the Mode button to end.
RLV450
Off
On
°C / 24-hour
°F / 12-hour
Short
Long
Off
On
3.
Temperature Setting
Setpoint
The thermostat normally displays the actual temperature. To view the
setpoint, press the
the next 5 seconds.
To change the setpoint, press the
temperature is displayed. To scroll faster, hold the button.
Using a preset temperature
The thermostat has 3 preset temperatures:
Comfort temperature
Economy temperature
Vacation temperature
Icon
Comfort (when at home)
Economy (when asleep or away from home)
Vacation (during prolonged absence)
•
To use the Comfort or Economy temperature, press the
button respectively. The corresponding icon will be displayed.
•
To use the Vacation temperature, press both
simultaneously. The
Storing a preset temperature
To store the Comfort or Economy temperature:
4.
Set the desired temperature using the
hold the appropriate button (
onds until the corresponding icon is displayed.
To store the Vacation temperature:
Set the desired temperature using the
hold both
and
seconds until the
Modes of Operation
Automatic - The temperature is set according to the programmed
schedule. To place the thermostat in this mode, press the Mode but-
ton until
is displayed. The icons of the current period and preset
temperature are also displayed.
Temporary Bypass: If you modify the setpoint (by pressing the
,
,
or
button) when the thermostat is in automatic mode,
the new setpoint will be used until the end of the current period.
When the next period starts, the temperature set for that period
becomes the new setpoint. To cancel the bypass, press the
Mode button.
Manual - The programmed schedule is not used. The temperature
must be set manually. To place the thermostat in this mode:
Press the Mode button until
Set the temperature using the
or
button briefly. The setpoint will appear for
or
button until the desired
Intended use
icon will be displayed.
or
or ) for approximately 3 sec-
or
buttons simultaneously for approximately 3
icon is displayed.
is displayed.
,
,
or
button.
69-2201EF-03
2009-08-04
5.
Factory setting
21.0°C (70°F)
16.5°C (62°F)
10.0°C (50°F)
or
and
buttons
button. Press and
button. Press and
6.
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