Viessmann VITOTROL 100 OT Quick guide

Installation and service
instructions
for contractors
VIESMANN
Room temperature controller
OpenTherm room temperature controller with digital time switch
For Vitodens 100-W, 111-W and 050-W
Room temperature controller
5837759 GB 12/2018 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and
material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note"
contain additional information.
Target group
These instructions are exclusively
intended for qualified contractors.
■ Work on gas installations may only
be carried out by a registered gas fit-
ter.
■ Work on electrical equipment may
only be carried out by a qualified
electrician.
■ The system must be commissioned
by the system installer or a qualified
person authorised by the installer.
Regulations to be observed
■ National installation regulations
■ Statutory regulations for the preven-
tion of accidents
■ Statutory regulations for environmen-
tal protection
■ Codes of practice of the relevant
trade associations
■ Relevant country-specific safety reg-
ulations
Safety instructions
Safety instructions
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3
Safety instructions for working on the system
Working on the system
■ Where gas is used as the fuel, close
the main gas shut-off valve and safe-
guard it against unintentional reopen-
ing.
■ Isolate the system from the power
supply, e.g. by removing the separate
fuse or by means of a mains isolator,
and check that it is no longer live.
■ Safeguard the system against recon-
nection.
■ Wear suitable personal protective
equipment when carrying out any
work.
Danger
Hot surfaces and fluids can lead
to burns or scalding.
■ Before maintenance and serv-
ice work, switch OFF the
appliance and let it cool down.
■ Never touch hot surfaces on
the boiler, burner, flue system
or pipework.
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Prior to commencing work,
touch earthed objects such as
heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil
a safety function can compro-
mise the safe operation of the
system.
Replace faulty components only
with genuine Viessmann spare
parts.
Auxiliary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the system can compro-
mise its function. Installing non-
authorised components and
making non-approved modifica-
tions or conversions can com-
promise safety and may invalid-
ate our warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5837759

4
Safety instructions for operating the system
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in seri-
ous injury.
■ Do not smoke. Prevent naked
flames and sparks. Never
switch lights or electrical appli-
ances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Evacuate any people from the
danger zone.
■ Notify your gas or electricity
supply utility from outside the
building.
■ Have the power supply to the
building shut off from a safe
place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life threat-
ening poisoning.
■ Shut down the heating sys-
tem.
■ Ventilate the installation site.
■ Close doors to living spaces
to prevent flue gases from
spreading.
What to do if water escapes from the
appliance
Danger
If water escapes from the appli-
ance there is a risk of electrocu-
tion.
Switch OFF the heating system
at the external isolator (e.g. fuse
box, domestic distribution
board).
Danger
If water escapes from the appli-
ance there is a risk of scalding.
Never touch hot heating water.
Condensate
Danger
Contact with condensate can be
harmful to health.
Never let condensate touch your
skin or eyes and do not swallow
it.
Flue systems and combustion air
Ensure that flue systems are clear and
cannot be sealed, for instance due to
accumulation of condensate or other
external causes.
Ensure an adequate supply of combus-
tion air.
Inform system users that subsequent
modifications to the building character-
istics are not permissible (e.g. cable/
pipework routing, cladding or parti-
tions).
Safety instructions
Safety instructions (cont.)
5837759

5
Danger
Leaking or blocked flue sys-
tems, or an inadequate supply
of combustion air can cause life
threatening poisoning from car-
bon monoxide in the flue gas.
Ensure the flue system is in
good working order. Vents for
supplying combustion air must
be non-sealable.
Extractors
Operating appliances that exhaust air
to the outside (extractor hoods, extrac-
tors, air conditioning units, etc.) can
create negative pressure. If the boiler is
operated at the same time, this can
lead to a reverse flow of flue gas.
Danger
The simultaneous operation of
the boiler and appliances that
exhausts air to the outside can
result in life threatening poison-
ing due to a reverse flow of flue
gas.
Fit an interlock circuit or take
suitable steps to ensure an ade-
quate supply of combustion air.
Safety instructions
Safety instructions (cont.)
5837759

6
Service instructions
Information
Disposal of packaging.......................................................................................... 7
Symbols................................................................................................................ 8
Intended use......................................................................................................... 9
Product information.............................................................................................. 9
Installation instructions
Preparing for installation
Installation information......................................................................................... 10
Installation sequence
Opening the controller.......................................................................................... 11
Fitting the wall mounting base.............................................................................. 11
Electrical connections........................................................................................... 12
Assembling the controller..................................................................................... 14
Service instructions
Commissioning and adjustment
Starting up the room temperature controller......................................................... 15
Setting the mixer extension kit parameters.......................................................... 15
Further settings.................................................................................................... 16
Troubleshooting
Fault messages.................................................................................................... 23
Scanning temperatures and programs................................................................. 23
Specification....................................................................................................... 25
Index
Index
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Please dispose of packaging waste in
line with statutory regulations.
Information
Disposal of packaging
5837759
Service

8
Sym-
bol
Meaning
Reference to other document
containing further information
1.
Step in a diagram:
The numbers correspond to
the order in which the steps
are carried out.
Warning of material losses and
environmental pollution
Live electrical area
Pay particular attention.
■ Component must audibly
click into place.
or
■ Acoustic signal
■ Fit new component.
or
■ In conjunction with a tool:
Clean the surface.
Dispose of component correct-
ly.
Dispose of component at a
suitable collection point. Do
not dispose of component in
domestic waste.
Information
Symbols
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9
The appliance is intended solely for
installation and operation in sealed
unvented heating systems that comply
with EN 12828, with due attention paid
to the associated installation, service
and operating instructions. It is only
designed for heating up heating water
that is of potable water quality.
Intended use presupposes that a fixed
installation in conjunction with permissi-
ble, system-specific components has
been carried out.
Commercial or industrial usage for a
purpose other than heating the building
or DHW shall be deemed inappropriate.
Any usage beyond this must be
approved by the manufacturer in each
individual case.
Incorrect usage or operation of the
appliance (e.g. the appliance being
opened by the system user) is prohibi-
ted and will result in an exclusion of lia-
bility. Incorrect usage also occurs if the
components in the heating system are
modified from their intended use (e.g. if
the flue gas and ventilation air paths
are sealed).
Product information
Room temperature controller
■ For room temperature-dependent
mode or weather-compensated mode
of the heat generator.
Weather-compensated mode in con-
junction with an outside temperature
sensor (separate accessories).
■ For controlling a heating circuit with-
out a mixer and/or a heating circuit
with a mixer in conjunction with the
OpenTherm mixer extension kit (sep-
arate accessories).
Room temperature-dependent mode
or weather-compensated mode in
conjunction with an outside tempera-
ture sensor (separate accessories).
Information
Intended use
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Service

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Installation location for room temperature-dependent mode
■ On an internal wall in the main living
room, approx. 1.5 m above the floor
■ Not next to windows or doors
■ Not above radiators
■ Not between shelves, in recesses,
etc.
■ Not near heat sources (direct insola-
tion, fireplace, TV set, etc.)
Note on operation as a room temper-
ature controller
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.
Installation location for weather-compensated mode
The device can be installed anywhere
in the room.
Preparing for installation
Installation information
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Fitting the wall mounting base
Installation sequence
Opening the controller
5837759
Installation

12
Connection to the heat generator control unit
L?
4 3 2 1
96
A
B
D
F
6
5
4
8
7E
C
ABoiler control unit
BTerminals on the control unit
COutside temperature sensor
DRoom temperature controller
EInput for on-site switching contact
FRemove jumper when connecting.
Recommended connecting cable
■ 2-core cable for extra low voltage !Please note Incorrect connection will dam-
age the room temperature con-
troller.
Do not connect the room tem-
perature controller to plug 96.
Connecting the on-site switching contact
Connection at terminals 7 and 8
Installation sequence
Electrical connections
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On-site switching contact: Floating con-
tact, electrically isolated
The following functions can be connec-
ted:
■ Window contact (operation with frost
protection temperature when contact
is open)
■ Telephone contact (telephone remote
switch)
■ Presence detector (switching contact)
Connection to mixer extension kit
L?
4 3 2 1
96
A
B
D
GG
H
X12 X22 X3
1234 5 6 46
5
4
6
5
4
321
C
8
7
8
7
E F
ABoiler control unit
BTerminals on the control unit
COutside temperature sensor
DMixer extension kit
ERoom temperature controller for
heating circuit without mixer
FRoom temperature controller for
heating circuit with mixer
GInput for on-site switching contact
Installation sequence
Electrical connections (cont.)
5837759
Installation

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HJumper
1. Connect the heat generator control
unit and the room temperature con-
troller.
2. Remove jumper H.
Connecting the on-site switching contact
Connection at terminals 7 and 8
On-site switching contact: Floating con-
tact, electrically isolated
The following functions can be connec-
ted:
■ Window contact (operation with frost
protection temperature when contact
is open)
■ Telephone contact (telephone remote
switch)
■ Presence detector (switching contact)
Assembling the controller
Installation sequence
Electrical connections (cont.)
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15
Information on language setting
If a particular language is not available,
set the operating language to English.
Available languages:
■ German
■ Danish
■ English
■ French
■ Italian
■ Dutch
■ Polish
■ Spanish
■ Czech
■ Turkish
■ Hungarian
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 (10.64 or 10.65)
■"OPEN THERM"
If "0 - 10 V" appears here, select
"OPEN THERM". See
page 18.
■ If "OT CONTROL" flashes, enter
the following settings:
2. Change settings with +/- or the
rotary selector, and confirm with
OK.
■ Select the operating mode:
– For room temperature-depend-
ent mode: "ROOM-CON-
TROL"
– For weather-compensated
mode: "OT CONTROL"
An outside temperature sensor
must be connected to the boiler
control unit.
■"LANGUAGE"
■"YEAR"
■"MONTH"
■"DAY"
■"HOUR"
■"MINUTE"
Commissioning is complete when
the current room temperature
appears.
For further settings, see page 16.
Note
The automatic summer/wintertime
changeover can be set under
"SU/WI RULE".
Operating instructions
Setting the mixer extension kit parameters
Calling up and changing parameters
Display and adjustment are made on
the room temperature controller.
01. Press MODE.
02. Use / to select "SETTINGS".
03. OK to confirm
Commissioning and adjustment
Starting up the room temperature controller
5837759
Service

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04. Use / to select "SERVICE".
05. OK to confirm
06. Use / to select "TSP-PARAM-
ETER".
07. OK to confirm
08. Use / to select the required
parameter.
For information on the
parameters, see the instal-
lation and service instruc-
tions for the heating circuit
extension kit.
09. OK to confirm
10. Set the required value with +/-.
11. OK to confirm
Further settings
1. Press MODE.
2. Use / to select "SETTINGS".
3. OK to confirm
4. Use / to select "SERVICE".
5. OK to confirm
6. Use / to select the required set-
ting.
See following chapter.
7. OK to confirm
Temperature balancing (wall compensation)
If the controller is mounted in an unfav-
ourable 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 confirm
3. Use +/- or the rotary selector to set
the required corrected temperature.
4. OK to confirm
Commissioning and adjustment
Setting the mixer extension kit parameters (cont.)
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Start optimisation
Only for room temperature-dependent
mode: The controller uses the differ-
ence 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 begin-
ning of the set time phase.
Example: With a temperature differen-
tial of 6 K and a setting of 5 min/K, cen-
tral heating starts 30 min earlier.
Factory setting 00 (no start optimisa-
tion)
1. Use / to select "OPTIMISE".
2. OK to confirm
3. Use +/- or the rotary selector to set
the required optimisation value in
min/K.
4. OK to confirm
External input
1. Use / to select "EXT INPUT".
2. OK to confirm
3. Use +/- or the rotary selector to set
the required function. See the table
below.
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 re-
mote 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
Commissioning and adjustment
Further settings (cont.)
5837759
Service

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4. OK to confirm 5. If possible, enter further settings
and confirm with OK.
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 confirm
3. Use +/- or the rotary selector to
select "OPEN THERM".
4. OK to confirm
Control characteristics
Various parameters for control charac-
teristics can be changed, depending on
the selected operating mode. See fol-
lowing chapter.
1. Use / to select "CONTROL".
2. OK to confirm
3. Use / to select the following,
depending on the operating mode:
■"ROOM-CONTROL" for room
temperature-dependent mode
■"OT CONTROL" for weather-
compensated mode
4. OK to confirm. The first adjustable
parameter is displayed.
5. Use +/- or the rotary selector to set
the required value.
6. OK to confirm. 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 (heating flow temperature at
outside temperature + 20 °C)
■ End point (heating flow temperature
at outside temperature - 15 °C)
■ Shift (setback in reduced mode)
Commissioning and adjustment
Further settings (cont.)
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Outside temperature in °C
Flow temperature in °C
90
80
70
60
50
40
30
0 -5 -10 -15510
20
152025 -20
A
B
Parameter Setting range Delivered condition
Low end A10 - 40 °C 25 °C
End point B25 - 90 °C 60 °C
Shift 5 - 35 K 25 K
The heating curve is limited at the
upper end by the maximum flow tem-
perature ("MAX TEMP").
Note
If the room temperature controller acts
on 2 heating circuits (heating circuit
with mixer and heating circuit without
mixer), 2 heating curves can be set.
■ Heating curve 1 acts on the heating
circuit without mixer.
■ Heating curve 2 acts on the heating
circuit with mixer.
■ The set switching times act on both
heating circuits.
Maximum flow temperature limit
To limit the heating curve at the upper
end.
"MAX TEMP" adjustable from 0 - 90 °C
Factory setting 90 °C
Room influence factor
If the actual room temperature deviates
too much from the set room tempera-
ture, 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
Commissioning and adjustment
Further settings (cont.)
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Service

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Heating limit
Heating mode ends when the set out-
side temperature ("HEATING OFF AT")
is reached.
"HEATING OFF AT" adjustable from
15 - 25 °C
Delivered condition - -
Settings for room temperature-dependent mode ("ROOM-CON-
TROL")
Depending on the set and actual room
temperatures, the required flow temper-
ature is determined and transmitted to
the heat generator control unit.
Maximum flow temperature limit
To limit the set flow temperature at the
upper end.
"MAX TEMP" adjustable from 0 - 90 °C
Factory setting 90 °C
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 max.
flow temperature.
"P-BAND" adjustable from 1.0 - 2.0 K
Factory setting 1.6 K
Example:
■ Max. flow temperature 80 °C (factory setting)
■ Set room temperature 20 °C
■ Stop hysteresis 0.4 K (fixed)
Commissioning and adjustment
Further settings (cont.)
5837759