Viessmann ESS VITOBLOC 200 User manual

5783 171-1 GB 03/2014 Please retain
Operating instructions
for contractors
VITOBLOC 200
Type EM-20/39
Part no. 7519058
CHP unit for operation with natural gas

Imprint
2 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
5783 171-1 GB 03/2014
This appliance meets all basic
requirements of the applicable standards
and guidelines. Conformity has been
verified. All associated documents and the
original Declaration of Conformity are
available from the manufacturer.
NOTE
The Vitobloc 200 CHP unit is not suitable
for 60 Hz operation. It is therefore not
available in certain markets, in particular
America and Canada.
Manufacturer and service partner
ESS Energie Systeme & Service GmbH
Celsiusstrasse 9
D-86899 Landsberg am Lech
Tel. [phone]
Fax. [phone]
Email: [email protected]
Internet: www.ess-landsberg.de
© ESS Energie Systeme & Service GmbH,
Landsberg am Lech, 2012
These instructions are protected by copyright. All
rights derived from this copyright are reserved (even
when only excerpts are used), unless a contractual
agreement is reached in this regard.
ESS Energie Systeme & Service GmbH (referred to
hereinafter as ESS) reserves the right to change the
product described herein at any time and without
notice, in line with technological advances, unless
specified otherwise in the contract.

Table of contents
VITOBLOC 200 EM-20/39 Operating instructions ESS Energie Systeme & Service GmbH 3
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1Introduction......................................................................................4
1.1 Structure of the safety instructions............................................................................. 4
1.2 Depiction of safety instructions................................................................................... 4
1.3 Safety signs...................................................................................................................5
1.4 Trademarks ...................................................................................................................5
2Intended use.....................................................................................6
3Safety................................................................................................7
3.1 Legal disclaimer............................................................................................................ 7
3.2 Safety equipment.......................................................................................................... 7
3.3 Personnel ......................................................................................................................8
3.4 General safety regulations........................................................................................... 9
3.5 Special safety regulations.......................................................................................... 10
3.6 Information regarding particular types of hazard..................................................... 11
4Product description .......................................................................14
4.1 Overview...................................................................................................................... 14
4.2 Casing.......................................................................................................................... 15
4.3 Control panel............................................................................................................... 15
4.4 Control unit ................................................................................................................. 15
4.5 Type plate.................................................................................................................... 16
5Operation........................................................................................17
5.1 Switching on and off................................................................................................... 17
5.2 Optimising operation.................................................................................................. 18
5.3 Control unit functions................................................................................................. 18
5.4 Emergency operation ................................................................................................. 27
5.5 Faults and troubleshooting........................................................................................ 28
6Information regarding service and maintenance.........................29
7Shutdown and decommissioning .................................................30
7.1 Temporary decommissioning.................................................................................... 30
7.2 Final decommissioning .............................................................................................. 30
8Appendix.........................................................................................31
8.1 Operating log form...................................................................................................... 31

Introduction
4 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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1 Introduction
This document applies to the Vitobloc 200 EM-20/39
combined heat and power (CHP) unit - also referred
to hereinafter as the "machine". This document must
always be stored within easy reach of the system.
Constant development may result in minor changes to
the illustrations, functional steps and specifications.
ESS expressly disassociates itself from all content of
all linked websites and does not consider such
content its own. This declaration applies to all external
links and references to the internet specified within
this document.
1.1 Structure of the safety instructions
Each safety instruction consists of 5 elements.
Fig. 1Safety instruction structure
1 Keyword
2 Type and source of hazard
3 Potential consequences of the hazard
4 Avoidance of the hazard
5 Hazard symbol
1.2 Depiction of safety instructions
The notes in this documentation are important for
safety and must be observed.
DANGER
Explanation
Designates an immediately imminent
danger
►If it is not avoided, it will result in
death or serious, irreversible injury.
WARNING
Explanation
Designates a potentially dangerous
situation
►If it is not avoided, it will result in
death or serious, irreversible injury.
CAUTION
Explanation
Designates a potentially dangerous
situation
►If it is not avoided, then it may
result in slight or minor, reversible
injury.
ATTENTION
Explanation
Designates a potentially harmful
situation
►If it is not avoided, then the
machine or an object in its vicinity
may be damaged.
1
2
3
4
5
DANGER

Introduction
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1.3 Safety signs
The following signs (safety signs) are attached to the
machine or must be affixed on/in the plant room by
the operator:
1.3.1 Prohibition signs
Access for unauthorised persons
forbidden!
Areas identified in this way may only
be accessed by people who have
been expressly authorised to do so,
e.g. in connection with work to be
performed there. Access is prohibited
for all other people.
Fire, naked flames and smoking
forbidden!
Identifies danger zones in which fire,
naked flames and smoking are
prohibited.
Access prohibited for persons with
active implants!
(e.g. cardiac pacemakers)
Identifies danger zones that must not
be accessed by persons with active
implants.
Access prohibited for persons with
passive implants!
(e.g. artificial joints)
Identifies danger zones that must not
be accessed by persons with metal
implants.
1.3.2 Warning signs
Warning of dangerous electrical
voltage!
Means "stop" before entering danger
zones containing live parts.
Warning of hot surfaces!
Means "stop" before entering danger
zones that may contain hot surfaces.
1.3.3 Command signs
Wear safety shoes!
Prescribes that protective footwear
must be worn during transportation
and installation.
1.4 Trademarks
Reference is made in this document to various
registered trademarks that are not specifically
identified as such within the text. The absence of any
identification does not necessarily mean that the
corresponding product name is free of third party
rights.

Intended use
6 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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2 Intended use
The operator of the Vitobloc 200 EM-20/39 CHP unit
must observe country-specific legislation and
regulations.
Target group
This document is intended solely for use by
contractors; see chapter 3.3 Personnel.
This appliance has not been designed to be operated
by individuals (including children) with limited
physical, sensory or mental capacities or who lack the
appropriate experience and/or knowledge, unless they
are supervised by a person responsible for their
safety.
Children must be supervised to ensure that they never
play with the appliance.
Application
The Vitobloc 200 EM-20/39 CHP unit is intended
exclusively for generating 400 V, 50 Hz, three-phase
power and domestic hot water with a temperature
level (flow/return) of 80/60 °C at full load and a
standard temperature spread of 20 K in natural gas
operation.
It is only intended for industrial and commercial
applications.
The heating output of the CHP unit decreases at
heating water return temperatures greater than 40 °C.
Any use that differs from or goes beyond this is
considered inappropriate. The manufacturer is not
liable for any losses arising from such inappropriate
use. The operator alone bears the associated risks.
Correct use also includes observance of these
instructions and compliance with the inspection and
servicing terms and conditions.
Incorrect use
All applications deviating from the intended use are
deemed to be impermissible incorrect use. This
includes:
●Application areas not listed under "Application".
●Use of operating fluids that do not correspond to
the manufacturer's specifications.
●Use outside the permissible technical operating
limits.
●Use in areas at risk of explosion.
●Use outdoors.
●Bypassing of safety equipment.
●Operation as an emergency generator.
●Permanent island operation.
●Use only for heat generation if power is not drawn
off simultaneously.
●Siting in the same room as a boiler system with
atmospheric burner or an NH3refrigerating
machine.
EC Declaration of Conformity and Declaration of
Incorporation
This CHP unit is considered a complete machine in
the context of the EC Machinery Directive.
The machine complies with the EC Machinery
Directive. This has been established by means of a
conformity assessment process.
Declaration of Conformity
The Declaration of Conformity is the basis for the
system's CE designation. The CHP unit may only be
operated in accordance with country-specific
legislation, regulations and standards.
The control unit has a CE designation in accordance
with the EMC Directive and the Low Voltage Directive.

Safety
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3 Safety
3.1 Legal disclaimer
The CHP unit is built in accordance with the latest
engineering standards and recognised safety
regulations. Nevertheless, impermissible use can still
result in risk to life and limb or to machine impairment
and other material losses.
Only use the CHP unit if it is in perfect technical
condition in accordance with its intended use, with
awareness of all safety and risk-relevant factors. Only
use it with due regard to the operating instructions.
Faults that may have a detrimental impact on safety
must be corrected without delay.
Use of prescribed and/or approved operating fluids in
line with the specification is a prerequisite for the
recognition of warranty claims.
Operation of the CHP unit at levels exceeding the
limits invalidates the warranty. The manufacturer
accepts no liability for faults and/or damage
(corrosion, contamination, wear) caused by gases or
materials that were not known and agreed to at the
time the contract was concluded.
Safety information
Information concerning safety cannot be interpreted
against ESS. Even if all safety instructions are
followed, there is no guarantee that the CHP unit will
not cause any injuries or damage.
No modifications may be made to the CHP unit without
the approval of ESS. Additional components not
included in the standard delivery may be integrated into
thesystem. The operator is responsible for any damage
to the CHP unit or other material assets caused by such
components.
DANGER
Impermissible modifications to the
machine.
Risk to life, serious personal injury
with irreversible damage
►Never perform any modifications or
alterations to the machine without
permission.
3.2 Safety equipment
The installer protects the CHP unit from unauthorised
access by installing it in a locked plant room. The
installer is also responsible for ensuring that all safety
equipment is fully installed and fully functional.
Furthermore, the installer is responsible for attaching
the safety signs.
DANGER
Missing or non-functional safety
equipment.
Risk to life, serious personal injury
with irreversible damage
►NEVER remove or disable safety
equipment.

Safety
8 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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3.3 Personnel
All personnel working on the CHP unit must be
trained in its use. They must also have read and
understood the documentation, including the chapter
concerning safety. We recommend that this is
confirmed with their signature.
The term "Personnel" includes the installer, the
operator and the user of the machine.
ATTENTION
Failure to observe the installation
instructions.
Serious material damage to the
machine and its surroundings
►The specifications in the
installation instructions must be
observed.
►Siting, replacement, adjustment,
servicing and maintenance may
only be carried out by personnel
with specific training on the
relevant component of the
machine.
Installer (e.g. specialist company)
The installer must integrate the CHP unit safely into a
system.
DANGER
Missing or non-functional safety
equipment.
Risk to life, serious personal injury
with irreversible damage
►NEVER remove or disable safety
equipment.
ATTENTION
Installation, control and operation by
unauthorised or unqualified
personnel.
Serious material damage to the
machine and its surroundings
►No unauthorised person is
permitted within the working area.
►Only employ qualified, trained
personnel.
The installer is responsible for the following tasks:
●Installing the CHP unit.
●Connecting the CHP unit.
●Installing the prescribed safety and protective
equipment.
●Attaching the necessary safety signs.
●Displaying the Declaration of Conformity for the
system.
●Preparing the operating instructions for the
system.
●Training the operator/user. The latter must sign to
confirm that they have taken part in this training.
Installation personnel
The responsibilities of the installation and
commissioning personnel must be defined.
The personnel must meet the following requirements:
●They must have read and understood all the
documentation, including the chapter concerning
safety.
●They must be trained and instructed in the work to
be performed.
●They must use the personal protective equipment.
●Only qualified personnel may carry out work on
the machine. Qualified personnel are people who
can assess the work to be performed and identify
potential risks based on their technical training
and experience as well as their knowledge of
applicable standards.
●Depending on country-specific legislation,
regulations and standards, the installer may need
to adapt these conditions.
Operator
The operator of the CHP unit is responsible for its
correct use. The operator must ensure the safe
operation of the machine, as well as define and
ensure compliance with all necessary regulations
concerning the safety of personnel.
The operator is responsible for compliance with
country-specific legislation, regulations and
standards.

Safety
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3.4 General safety regulations
The CHP unit may only be used in technically flawless
condition, in accordance with its intended application
and with awareness of all safety-relevant factors.
Incorrect handling may result in personal injury and
material damage.
In the event of any defects or faults being identified
with regard to operational safety or operational
reliability, the CHP unit must be shut down
immediately or not started up in the first place.
DANGER
Incorrect handling of the machine with
regard to operational safety.
Risk to life, serious personal injury
with irreversible damage
►Refrain from all unsafe working
methods.
►Do not carry out any modifications,
additions or alterations to the
machine which may adversely affect
safety.
►Take measures to ensure safe, fully
functional operation.
►Only operate the machine if all
protective and safety equipment is
fully functional.
►Comply with the safety regulations.
ATTENTION
Unauthorised modification to
programmable control systems.
Serious material damage to the
machine and its surroundings
►No unauthorised person is
permitted within the machine's
working area.
►Only qualified, trained personnel
may operate the machine.
●In the event of any functional faults, shut down the
machine and make it safe. Correct all faults
immediately.
●Spare parts must meet the technical requirements
stipulated by the manufacturer. This is always
guaranteed in the case of original spare parts.
●Appropriate workshop equipment is essential for
carrying out the installation work.
●The location of fire extinguishers and how they are
used must be made known.
●Observe the fire alarm and firefighting procedures.

Safety
10 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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3.5 Special safety regulations
3.5.1 Siting and storage
ATTENTION
Incorrect siting or storage.
Material damage due to corrosion
►Protect the machine and its parts
from rust.
►Prevent the formation of
condensation.
3.5.2 Assembly work and installation
●Adhere to the settings prescribed in the installation
instructions. Only qualified personnel may perform
such work.
●For all work involved in operating or setting up the
machine and its safety equipment, observe the
start-up and shutdown procedures described in
the operating instructions.
●When replacing larger assemblies, attach them
carefully to lifting gear and secure them in such a
way that no risk can arise from this. Only use
appropriate, technically flawless lifting gear and
lifting accessories with sufficient load bearing
capacity. Do not stand or work under suspended
loads.
●Only entrust experienced people with the
fastening of loads and guidance of crane drivers.
The person providing guidance must remain within
sight or in voice contact with the operator.
●When performing overhead installation work,
always use the intended or other safe climbing
aids and working platforms. Do not use machine
parts as climbing aids. Wear safety harnesses
when carrying out servicing work at a height.
●Always retighten any threaded connections that
have been loosened during installation work.
●If any safety equipment needs to be removed
during installation, it must be inspected
immediately after completing the installation work.
●Ensure safe and environmentally responsible
disposal of operating fluids and fuels.
●Installation of the machine and its peripheral
connection systems may only be carried out by
authorised personnel from a specialist company,
who have been instructed in these tasks by the
manufacturer.
●Work on parts carrying gas must be carried out by
a licensed gas fitter.
●The applicable engineering standards, as well as
all building and legal regulations apply to the
practical execution of this work.
●Design the safety equipment in accordance with
all locally applicable regulations.
●Observe the accident prevention regulations.
3.5.3 Commissioning
●Observe start-up and shutdown procedures,
machine ramp-up and control displays.
●Before switching on/commissioning the machine,
ensure that no-one can be put at risk by the
machine starting up.
●Before commissioning the machine, check all
safety equipment and other protective devices for
completeness and correct function. Check all
machine parts for the presence of any foreign
bodies.
●Before commissioning, it is essential to check that
the operating fluids comply with the
manufacturer's specifications.
●No unauthorised person or object is permitted
within the danger zone during commissioning.
ATTENTION
Unsuitable operating fluids.
Serious material damage to the
machine
►Gases and combustion air must
meet the manufacturer's
specifications in accordance with
chapter 10.5 of the installation
instructions.

Safety
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3.6 Information regarding particular types of hazard
3.6.1 Thermal hazards
WARNING
In the event of a fault, safety pressure
limiters can be triggered and discharge
hot coolant.
Risk of scalding
►Take particular care in this area in
the event of faults.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).
CAUTION
Pipework and components can heat up
during operation.
Risk of burns!
►Wear personal protective
equipment (e.g. protective gloves).
WARNING
Breakage and leaks due to load.
Risk of splashing with hot water or
engine oil
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).
3.6.2 Radiation
DANGER
The generator's electromagnetic fields
can cause faults in active implants
(e.g. cardiac pacemakers)!
Circulatory collapse
►Observe prohibition signs.
►Do not enter the danger zone.
DANGER
The generator's electromagnetic fields
can heat up passive implants made of
metal!
Severe internal burns
►Observe prohibition signs.
►Do not enter the danger zone.
3.6.3 Hazards caused by materials and
substances
DANGER
Leaks in the gas end exhaust system
can cause gas to escape.
Risk of poisoning
►No naked flames.
►Ventilate the area adequately.
►If gas escapes, shut down machine
and leave danger zone.
WARNING
Batteries contain sulphuric acid.
Risk of acid burns
►Avoid skin and eye contact.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).

Safety
12 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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3.6.4 Hazards during transportation
DANGER
Suspended loads.
Falling loads can cause death or
serious injury
►Never stand under suspended
loads.
►Observe all transport instructions.
WARNING
Risk of slippage.
Serious personal injury due to
crushing or material damage to the
machine and its surroundings
►Use transport brackets.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).
3.6.5 Electrical energy/equipment
DANGER
Live components!
Death by electrocution on contact
►Only trained, authorised, specialist
personnel may perform work on the
machine.
►Observe the safety instructions
listed in the machine.
►Isolate the machine from its power
supply before commencing
electrical work.
►Five safety regulations specified in
standard series DIN VDE 0105
must be observed.
ATTENTION
Installation or repair work performed
incorrectly.
Serious material damage to the
machine and its surroundings
►Only have service and repair work
carried out by authorised technical
personnel.
►Only use the original components
permitted by the manufacturer.
►Observe all safety and hazard
warnings.
●Only equip and operate the machine with products
permitted by the manufacturer.
●Only use original fuses/MCBs with the prescribed
current strengths. Shut down the machine
immediately in the event of faults in the power
supply.
●Observe all safety and hazard warnings on the
electrical equipment.
●Installation work on electrical equipment or
operating materials may only be carried out by an
electrician or trained personnel under the
supervision and guidance of an electrician, in
accordance with the electrical regulations.
●All work on live parts is prohibited.

Safety
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3.6.6 Gas, dust, steam, smoke
WARNING
Dust and dirt.
Restricted visibility
►Cover machine adequately.
►Close or cover control panels.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles) during welding and
grinding/polishing work.
3.6.7 Oils, greases and other chemical
substances
WARNING
Take care when handling oils, greases
and other chemical substances.
Personal injury or irreversible
damage due to burns, scalding or
chemical burns
►Observe safety instructions.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).
Observe the safety instructions applicable to the
product when handling oils, greases and other
chemical substances. The operator must procure
safety datasheets from the manufacturer and keep
them available.

Product description
14 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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4 Product description
4.1 Overview
The Vitobloc 200 EM-20/39 CHP unit consists of the
following components assembled on a base frame:
●Gas engine
●Gas supply unit
●Synchronous generator
●Lubricating oil system
●Sealed unvented cooling circuit with heat
extraction
●Exhaust system with heat extraction in the cooling
circuit and insulation
●3-way catalytic converter
The control panel with programming and display unit
is mounted on the front of the casing.
Fig. 2Overview –connection side
1 Gas connection GAS
2 Heating circuit flow connection HV
3 Heating circuit return connection HR
4 Extract air outlet (extract air fan) AL
5 Exhaust gas outlet AGA with test connector
6 Condensate outlet KO
7 Earth connection
Fig. 3Overview –operating side
1 Control panel
2 Programming and display unit
3 "Heat selection" switch
4 EMERGENCY STOP button
5 Cable entry points
6 Noise attenuating element, top
7 Noise attenuating element, side
8 Casing (removable)
9 Base frame
10 Adjustable feet
7
4
5
3
2
1
6
2
4
5
7
10
6
9
8
1
3

Product description
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4.2 Casing
The casing of the EM-20/39 consists of a frame with
noise attenuating elements for the engine/generator
unit. Ventilation is ensured by the extract air fan at the
back.
Supply air is drawn in via the floor pan.
The average frequency of the sound insulation of the
hood is approx. 20 dB.
Noise attenuating elements can be removed
individually for the purpose of installation work.
4.3 Control panel
The control panel is attached to the front of the base
frame and contains the electrical components for
operating and controlling the EM-20/39.
4.4 Control unit
The control unit is integrated into the control panel.
The EM-20/39 is programmed and operated via the
control unit.
4.4.1 Programming and display field
The programming and display field consists of an LCD
and a foil keypad. The LCD shows measured values
plus operating and fault messages. The foil keypad
features function keys for adjusting the set values.
Fig. 4Programming and display field
1 Fault indicator (lights up in the event of a fault)
2 Start/stop button
3 Operating indicator (lights up after
switching on)
4 Display
5 Foil keypad
4.4.2 Display
After switching on the machine, the standard screen
appears on the LCD display, showing the current
outputs of the EM-20/39.
Fig. 5Standard screen on programming and display unit
4.4.3 Foil keypad
The control unit is operated with the foil keypad.
Fig. 6Foil keypad
Key
Assignment
1
Back to standard screen
2
Cursor up
3
Cursor right
4
Input confirmation
5
Cursor down
6
Message retrieval
7
Call up control menu
8
Cursor left
Tab. 1 Keypad

Product description
16 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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4.5 Type plate
The type plate is located on the connection side of the
CHP unit.
Fig. 7Vitobloc 200 EM-20/39 type plate

Operation
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5 Operation
DANGER
Leaks in the exhaust system can cause
gas to escape.
Risk to life due to explosion or
poisoning
►No naked flames; do not smoke.
►Shut down machine; switch on
ventilation.
►Leave danger zone.
►Call maintenance service.
WARNING
Damage and injury due to incorrect
operation.
Serious material damage to the
machine and its surroundings
►Pay particular attention to the safety
instructions in section 3.
Keep a written record (operating log –see
appendix 8.1) of operation of the EM-20/39. Copy the
form from the appendix for this purpose and fill it out
accordingly.
5.1 Switching on and off
(1) Check that all safety equipment is installed and
fully functional. The gas tap must be open. The
gas pressure must be 20-50 mbar.
(2) From the "Heating mode selection" switch on the
display (Fig. 8/1), press the AUTO button. The
operating indicator and the display
light up on the programming and display field
(see page 15 Fig. 4).
Fig. 8Switching on
(3) Press the START button (Fig. 8/2). The EM-20/39
starts up in automatic mode.
(4) Operating values are updated and shown on the
display.
Fig. 9Display in automatic mode
Displays for heating mode:
1 Automatic mode ON
2 Heating mode ON
3 Grid coupling switch feedback ON
4 Gen. contactor feedback ON
5 Current operating data
6 Current time
7 Current date
8 Total number of starts
9 Total hours run
(5) Visual inspection for leaks.
WARNING
Leaks and breakage can cause oil and
steam to escape.
Serious injury due to burns or
scalding
►Observe safety instructions.
►Wear personal protective
equipment (e.g. protective gloves,
safety goggles).
(6) Press the stop button (Fig. 8/2) to halt operation.
(7) Turn the "Heating mode selection" switch
(Fig. 8/1) to the 0 position.
(8) Close the gas tap.
1
2

Operation
18 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
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5.2 Optimising operation
●Faults and consequential losses resulting from
prohibited operating conditions are not covered by
the warranty or any service contract.
●Always avoid shutting down on full load, as this
would subject the components to the highest
mechanical loads.
●Avoid cyclical on-off operation and provide a buffer if
necessary. The ratio of hours run to starts must be
greater than 2, i.e. at least two hours of operation
per start. The greater the ratio of hours run to starts,
the better.
●Provide an optional heat meter within the return
temperature raising facility to determine the amount
of heat generated.
●Regular servicing and maintenance by qualified
personnel in accordance with the manufacturer's
maintenance instructions. We recommend a service
contract.
●The batteries must be disconnected by the
manufacturer's technicians in the event of prolonged
idle periods or decommissioning of the CHP unit. In
the case of idle periods lasting longer than
24 weeks, the CHP unit must be preserved by the
manufacturer's technicians.
5.3 Control unit functions
5.3.1 Programming and display field on
control panel
Fig. 10 Programming and display field
1 Fault indicator (lights up in the event of a fault)
2 Start/stop button
3 Operating indicator (lights up after
switching on)
4 Display shows standard screen
when switching on, see Fig. 9
5 Foil keypad, see Fig. 11
Foil keypad functions
Fig. 11 Foil keypad
Key 1:
Back key
The previous display is always
shown after this key is pressed.
Key 2:
UP arrow key
For moving the cursor upwards in a
menu.
Key 3:
RIGHT arrow key
For moving the cursor to the right in
a menu.
Key 4:
OK key
For confirming an entry.
Key 5:
DOWN arrow key
For moving the cursor downwards in
a menu.
Key 6:
Message key
Displays logged faults when
pressed.
Key 7:
Menu key
When pressed, this shows the
submenu after the display currently
shown.
Key 8:
LEFT arrow key
For moving the cursor to the left in a
menu.

Operation
VITOBLOC 200 EM-20/39 Operating instructions ESS Energie Systeme & Service GmbH 19
5783 171-1 GB 03/2014
5.3.2 Overview of the control levels
Fig. 12 Control levels
As the start screen, the standard screen is control
level 1. All other control levels are based on the
standard screen.
The next level is displayed in each case by pressing
the Menu key (Fig. 11/7). When the Back key
(Fig. 11/1) is pressed, the previous menu is shown.

Operation
20 ESS Energie Systeme & Service GmbH Operating instructions VITOBLOC 200 EM-20/39
5783 171-1 GB 03/2014
5.3.3 Standard screen (level 1)
After switching on, the control unit standard screen
displays the current operating status.
The standard screen represents control level 1.
Fig. 13 Standard screen (level 1)
1 Operating mode display:
Automatik/Aus (Automatic/OFF)
2 Type of operation:
Wärme/Strom/Aus (Heat/Power/OFF)
3 Grid coupling switch feedback:
1 = ON / 0 = OFF
Gen. contactor feedback:
1 = ON / 0 = OFF
5 Display area with current operating data
6 Time display:
hours : minutes : seconds
7 Date display:
date : month : year : day
8 Number of system starts
9 System hours run:
hours : minutes
5.3.4 Menu screen (level 2)
This menu screen represents control level 2 and is
displayed when the Menu key (Fig. 11/7) is pressed.
Items within the display area can be selected by
pressing the arrow keys (Fig. 11).
Fig. 14 Menu screen (level 2)
When the menu screen appears, the "Modulwerte"
(module parameters) window is already marked for
selection.
Other menu items can be selected using the
UP/DOWN arrow keys.
The "Einstellung" (settings) and "Service" menu items
are intended for the maintenance service and can
only be activated by entering a password.