Viessmann VITOTROL 100 OT Operating instructions

VITOTROL 100 OT
Room Temperature Controller
Installation & Service Instruction Manual
OpenTherm Room Temperature Controller with Digital Time Switch
For Vitodens 100-W & Vitodens 111-W

2Contents
Contents
Preparing for Installation
Installation Location for Weather-Compensated Mode
Installation Location for Room Temperature-Dependent Mode
Specications
Installation Sequence
Opening the Controller
Fitting the Wall Mounting Base
Electrical Connections
Assembling the Controller
Commissioning & Adjustments
Information on Language Setting
Starting up the Room Temperature Controller
Further Settings
Temperature Balancing (Wall Compensation)
Start Optimisation
External Input
Device Type
Control Characteristics
Settings for Weather-Compensated Mode
Room Influence Factor
Heating Limit
Settings for Room Temperature-Dependent Mode
Selecting the Set Flow Temperature Change via P-Value
Setting the I-Component
Setting the Service Interval
Soft Start
Emissions Test Function
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3Preparing Installation
Preparing for Installation
Installation Location for Weather-Compensated Mode
The device can be installed anywhere in the room.
Installation Location for Room Temperature-Dependent Mode
• On an internal wall in the main living room, approx. 1.5m above the floor
• Not next to windows or doors
• Not above radiators
• Not between shelves, in tight spaces etc.
• Not near heat sources (direct isolation, replace, TV, etc.)
Note: Do not install further control devices in the main living room. If the radiators are equipped with
thermostatic valves, these must always be fully open.
Specications
Power Supply Via OpenTherm
IP Rating IP 20 to EN 60529
Protection Class II to EN 60730-1 subject to correct installation
Power Reserve 4 hours
Accuracy ≤ 1 s/day at 20˚C

4Installation Sequence
Installation Sequence
Opening the Controller
Fitting the Wall Mounting Base
Electrical Connections
A. Boiler control unit
B. Terminals on the control unit
C. Outdoor temperature sensor
D. Room temperature controller
E. Input for on-site switching contact
F. Remove jumper when connecting
Recommended connecting cable:
• 2-core cable for low voltage
Connecting the On-Site Switching Contact
Connection at terminals 7 and 8.
On-site switching contact: floating contact,
electrically isolated.

5Installation Sequence
Electrical Connections
The following functions can be connected:
• Window contact (operation with frost protection temperature when contact is open)
• Telephone contact (telephone remote switch)
• Presence detector (switching contact)
Assembling the Controller

6Commissioning & Adjustments
Commissioning & Adjustments
Information on Language Setting
If a particular language is not available, set the operating language to English.
Available languages:
• English
• German
• French
• Italian
• Dutch
• Polish
• Spanish
• Czech
• Hungarian
Starting up the Room Temperature Controller
1. Turn on the ON/OFF switch on the boiler control unit.
The following information appears in sequence:
• Segment test (all symbols are displayed)
• Equipment code and software version (10.62 or higher)
• "OPEN THERM"
If "0 - 10 V" appears here, set "OPEN THERM" See page 8
• If "OT CONTROL" flashes, make the following settings:
2. Change settings with +/- or the rotary selector, conrm with OK
• Select the operating mode:
• For weather-compensated mode: "OT CONTROL". An outside temperature sensor must be
connected to the boiler
• For room temperature-dependent mode: "ROOM CONTROL"
• "LANGUAGE"
• "YEAR"
• "MONTH"
• "DAY"
• "HOUR"
• "MINUTE"
Commissioning is complete when the current room temperature appears.
For further settings, see below.
Note: The automatic Summer/Wintertime changeover can be set under "SU/WI RULE"
Further Settings
1. Press MODE
2. Use <--/--> to select "SETTINGS"
3. OK to conrm
4. Use <--/--> to select "SERVICE"
5. OK to conrm
6. Use <--/--> to select the required setting
See the following chapters
7. OK to conrm

7Commissioning & Adjustments
Temperature Balancing (Wall Compensation)
If the controller is mounted in an unfavourable installation location, the room temperature displayed
may deviate from the actual room temperature. The temperature deviation can be adjusted with a
correction value.
1. Use <--/--> to select "WALL COMP"
2. OK to conrm
3. Use +/- or the rotary selector to set the required corrected temperature.
4. OK to conrm
Start Optimisation
Only for room temperature-dependent mode: The controller uses the difference between the set
and actual room temperatures to determine how far in advance to set the central heating start time.
This ensures that the set room temperature is achieved at the beginning of the set time phase.
Example: With a temperature differential of 6 K and a setting of 5 min/K, central heating starts 30
minutes earlier.
Factory setting 00 (no start optimisation)
1. Use <--/--> to select "OPTIMISE"
2. OK to conrm
3. Use +/- or the rotary selector to set the required optimisation value in min/K
4. OK to conrm
External Input
1. Use <--/--> to select "EXT INPUT"
2. OK to conrm
3. Use +/- or the rotary selector to set the required function. See the table below
4. Once the function is selected, press OK to conrm
5. If possible, make further settings and conrm with OK
Set "EXT INPUT" according to the connected function:
Function Setting
No function connected "UNUSED INPUT"
Window contact (operation with frost protection
temperature when contact is open) "WINDOW SWITCH"
Telephone contact (telephone remote switch)
"PHONE SWITCH"
Further settings:
• Required set room temperature
• Required runtime
The function can be terminated with "OFF" be-
fore the set time has elapsed.
Presence detector (switching contact)
"PRESENCE DETECTOR"
Further settings:
• Required set room temperature
Sensor functions Do not adjust

8Commissioning & Adjustments
Device Type
The factory setting for "DEVICE TYPE" is "OPEN THERM". If this is not the case, set "OPEN THERM"
1. Use <--/--> to select "DEVICE TYPE"
2. OK to conrm
3. Use +/- or the rotary selector to select "OPEN THERM"
4. OK to conrm
Control Characteristics
Various parameters for control characteristics can be changed, depending on the selected
operating mode. See the following chapter.
1. Use <--/--> to select "CONTROL"
2. OK to conrm
3. Use <--/--> to select the following, depending on the operating mode:
• "OT CONTROL" for weather-compensated mode
• "ROOM-CONTROL" for room temperature-dependent mode
4. OK to conrm. The rst adjustable parameter is displayed
5. Use +/- or the rotary selector to set the required value
6. OK to conrm. The display switches to the next parameter
Settings for Weather-Compensated Mode ("OT CONTROL")
Heating Curve
The heating curve can be changed with the following parameters:
• Low end
• End point
• Parallel shift
Parameter Setting Range Delivered Condition
Low end - A10 - 40˚C 25˚C
End point - B25 - 90˚C 60˚C
Parallel shift (setback in
reduced mode) 5 - 35 K 25 K

9Commissioning & Adjustments
The heating curve is limited at the upper end by maximum flow temperature ("MAX TEMP")
Maximum Flow Temperature
To limit the heating curve at the upper end
"MAX TEMP" adjustable from 25 - 80˚C
Factory setting 80˚C
Room Inuence Factor
If the actual room temperature deviates too much from the set room temperature, the set flow
temperature can be raised by a factor per 1 K deviation.
The higher the value for "ROOM INFLUENCE", the greater the increase in the set flow temperature.
"ROOM INFLUENCE" adjustable from 0 - 10
Delivered condition 0
Heating Limit
Heating mode ends when the set outside temperature ("HEATING OFF AT") is reached.
"HEATING OFF AT" adjustable from 15 - 25˚C
Delivered condition - -
Settings for Room Temperature-Dependent Mode ("ROOM CONTROL")
Depending on the set and actual room temperatures, the required flow temperature is determined
and transmitted to the control unit of the heat generator.
Maximum Flow Temperature
To limit the maximum flow temperature.
"MAX TEMP" adjustable from 25 - 80˚C
Factory setting 80˚C

10 Commissioning & Adjustments
Selecting the Set Flow Temperature Change via P Value
With the "P-BAND" setting, the change characteristics of the flow temperature are influenced
subject to the actual room temperature and the set maximum flow temperature.
Example:
Maximum flow temperature 80˚C (factory setting)
Set room temperature 20˚C
Stop hysteresis 0.4K (xed)
"P-BAND" adjustable from 1.0 - 2.0 K
Factory setting 1.6K
A- P 1.0 K
B- P 2.0 K
C- P 1.6 K (factory setting)
Setting the I Component Time
With the "I-TERM" setting, the change characteristics of the flow temperature are recorded during a
set period.
"I TERM" adjustable from 2 - 15 minutes.
Factory setting 10 minutes
• If the actual room temperature is < the set room temperature and the actual room temperature
has not increased during the I-time, the set flow temperature is increased by 1 K.
• If the actual room temperature is > the set room temperature and the actual room temperature
has not decreased during the I-time, the set flow temperature is reduced by 1K.

11Commissioning & Adjustments
Setting the Service Interval
"MONTHS BEFORE NEXT SERVICE" adjustable from 1 - 60.
Factory setting 00
Soft Start
The "SOFT START" function is not active.
Emissions Test Function
The "CHIMNEY SWEEP" function is not active.