Viessmann OpenTherm VITOTROL 100 OT Operating Instructions For The System User
VITOTROL 100 OT
Room Temperature Controller
Operating Instructions for the System User
OpenTherm Room Temperature Controller with Digital Time Switch
For Vitodens 100-W & Vitodens 111-W
2 Contents
Contents
General Information
Control Unit Function Modes
Controls
Summary of Controls & Indicators
Control and Display Elements
Symbols on Display
Controls
Default Display
Commissioning
Heating System Operation Mode
Time Program or Operating Mode
Selecting the Time Program or Operating Mode
Preset Time Programs
Constant Operating Modes
Changing the Selected Time Programs and Set Temperatures
Changing Existing Time Phases
Creating New Time Phases
Deleting Time Program
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Central Heating
Selecting the Operating Mode
Temporarily Changing the Set Room Temperature
Comfort Mode
Reduced Mode
Permanently Changing the Room Temperature
Changing the Heating Curve for Weather-Compensated Operation
Selecting a Heating Curve
Changing Room Temperature for a Few Days (Holiday Mode)
Stopping or Interrupting Holiday Mode
DHW Heating
Selecting the Time Program and DHW Temperature
Temporarily Changing the DHW Temperature
Further Adjustments & Possible Problems
Time and Date
Summertime/Wintertime
Further Settings
Setting the Language
Changing the Default Display
Setting the Contrast
Locking out the Controls (Key Lock)
Temporarily Interrupting or Unlocking Key Lock
Changing the Display Format of Fault Messages
Returning All Settings to Their Delivered Condition
Possible Problems
Carrying Out a Reset
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3General Information
General Information
Control Unit Function Modes
Your heating contractor set the function during commissioning.
Two function modes are possible:
• Room temperature-dependent operation: If no outside temperature sensor and no heating circuit
with mixer is connected, function mode "ROOM CONTROL" must be selected.
• Weather-compensated operation: If an outside temperature and a heating circuit mixer are
connected, function mode "OT CONTROL" must be selected.
The settings you can make vary depending on the function mode selected.
Note: DHW Heating is active continuously or in accordance with the set switching times, regardless
of the function mode set.
Note: You will have to select the function mode again following a reset.
4 Controls
Controls
Summary of Controls & Indicators
Controls and Display Elements
Symbols on Display
These symbols are not always displayed, but
appear subject to operating conditions.
Controls
Default Display
When idle, the screen always shows the room
temperature, time and (subject to settings)
selected time phases as the default display.
Press INFO to access control mode.
Information on Operation
You can perform most setting and selection
procedures using the +/- keys or the rotary
selector.
The following only describes how to control the
device using the keys
5Commissioning
Commissioning
Heating System Operating Mode
Depending on the installation and settings, your heating system is either room temperature-dependent
or weather-compensated in conjunction with an outside temperature sensor.
• In room temperature dependent mode, the set room temperature is controlled via the flow
temperature
• In weather-compensated mode with room inuence, the set room temperature is controlled via
the selected heating curve and room influence factor. The room influence factor can be set by
your local heating contractor.
• In weather-compensated mode without room inuence, the room temperature is controlled via
thermostatic valves. At temperature levels Comfort 1 to 3 and Party, the flow temperature is
controlled according to the selected heating curve. In reduced mode (setback mode and eco
mode), the flow temperature is reduced by a parallel shift of the heating curve. The setting of the
heating curve and height of the parallel shift can be changed by your heating contractor.
Note: In weather-compensated mode without room influence, choosing temperature levels Comfort
1 to 3 or Party does not result in different room temperatures.
Time Program or Operating Mode
You can choose between 3 preset time programs (P1 to P3) or select a permanent operating mode.
You can change the switching times of the programs individually. See page 7
For each time phase, you can choose between the following preselected set room temperatures
(temperature level):
• "COMFORT 1"
• "COMFORT 2"
• "COMFORT 3"
• "REDUCED TEMP"
• "FROST PROTECTION"
See page 7 for how to permanently change the set room temperatures.
Note: If your room temperature controller acts on 2 heating circuits, the set time program affects
both heating circuits.
Selecting the Time Program or Operating Mode
Press the following keys:
1. Press INFO
2. Press MODE
3. Select the required time program with <--/-->
In the delivered condition, time program P1 is set
4. Press OK to conrm
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