Herz commotherm LW-A series User manual

Operating instructions
commotherm LW-A
Air/Water
-
Heat pump
for outdoor installation

Introduction
2
INTRODUCTION
Your heating equipment is powered using HERZ heat pump equipment and we are delighted to be able to
welcome you int
o the large circle of satisfied operators of HERZ equipment. The HERZ heat pump is the
result of years of experience and continuous improvement. Please remember that in order to be able to work
properly, a well-
designed product also needs to be operated an
this documentation carefully –
you will find it worthwhile. Please pay particular attention to the safety notes. It
is a precondition of any warranty claim that all operating rules are maintained. In the event
defects, please contact your heating specialist or the HERZ Customer Service department.
Warranty / Guarantee (general information)
For HERZ -
heat pumps, we offer a 5 year or 10.000 compressor hours warranty on the closed refrigeration
circuit. As an option, the warranty can be extended (material warranty on the heat pump compressor) to 10
years. Extended warranty is valid only if the
For storage tanks and HERZ solar collectors come with a 5
from defects of mobile objects purchased for a period of 2 years, to a maximum of 6.000 h
For non-
moving purchased items, the guarantee is generally for a period of 3 years to a maximum for 9.000
hours of operation. Wearing parts are not covered by the guarantee/warranty. The warranty claim is
cancelled when missing commissio
prescribed fuel is used2.
Any claim to warranty services requires maintenance to be carried out on an annual basis by
specialist personnel authorised by HERZ.
The general warranty per
iod will not be extended if work is carried out under warranty. In the event of a
warranty claim, the due dates for payments owed to us will not be deferred. We will only provide a guarantee
if all the payments owed to us for the product supplied have been
The warranty will be carried out at our discretion by repairing the item purchased or replacing any defective
parts, by exchanging the item or by reducing the price. Parts or goods replaced are to be returned to us at
our request free of charge. Wag
es and costs paid out in connection with installation and removal are to be
paid for by the purchaser. The same applies to all warranty services.
The Supplier shall under no circumstances be liable to the Customer, for any direct, indirect or consequential
costs incurred by the Customer for works carried out on HERZ equipment.
This document is the translation from the German original. The reproduction or copying, even of extracts,
may only be undertaken with the permission of the company HERZ©.
Subject to technical modifications,
Version 05/2017
1 Maintenance by manufacturer
2
Recommended hydraulic diagrams can be found in the installation manual, while hydraulic balancing will be carried out by the
contractor.
Furthermore, the quality of the heating water must be in accordance with ÖNORM
Dear Customer!
Your heating equipment is powered using HERZ heat pump equipment and we are delighted to be able to
o the large circle of satisfied operators of HERZ equipment. The HERZ heat pump is the
result of years of experience and continuous improvement. Please remember that in order to be able to work
designed product also needs to be operated an
d maintained correctly. Please therefore read
you will find it worthwhile. Please pay particular attention to the safety notes. It
is a precondition of any warranty claim that all operating rules are maintained. In the event
defects, please contact your heating specialist or the HERZ Customer Service department.
Yours sincerely
HERZ – Energietechnik
Warranty / Guarantee (general information)
heat pumps, we offer a 5 year or 10.000 compressor hours warranty on the closed refrigeration
circuit. As an option, the warranty can be extended (material warranty on the heat pump compressor) to 10
years. Extended warranty is valid only if the
authorized service regular maintenance works are performed.
For storage tanks and HERZ solar collectors come with a 5
-
year warranty. We generally guarantee freedom
from defects of mobile objects purchased for a period of 2 years, to a maximum of 6.000 h
moving purchased items, the guarantee is generally for a period of 3 years to a maximum for 9.000
hours of operation. Wearing parts are not covered by the guarantee/warranty. The warranty claim is
cancelled when missing commissio
ning1
via a qualified personnel authorized of Herz as well as if not the
Any claim to warranty services requires maintenance to be carried out on an annual basis by
specialist personnel authorised by HERZ.
iod will not be extended if work is carried out under warranty. In the event of a
warranty claim, the due dates for payments owed to us will not be deferred. We will only provide a guarantee
if all the payments owed to us for the product supplied have been
made.
The warranty will be carried out at our discretion by repairing the item purchased or replacing any defective
parts, by exchanging the item or by reducing the price. Parts or goods replaced are to be returned to us at
es and costs paid out in connection with installation and removal are to be
paid for by the purchaser. The same applies to all warranty services.
The Supplier shall under no circumstances be liable to the Customer, for any direct, indirect or consequential
costs incurred by the Customer for works carried out on HERZ equipment.
This document is the translation from the German original. The reproduction or copying, even of extracts,
may only be undertaken with the permission of the company HERZ©.
Recommended hydraulic diagrams can be found in the installation manual, while hydraulic balancing will be carried out by the
Furthermore, the quality of the heating water must be in accordance with ÖNORM
H 5195 (current version) or VDI 2035.
Your heating equipment is powered using HERZ heat pump equipment and we are delighted to be able to
o the large circle of satisfied operators of HERZ equipment. The HERZ heat pump is the
result of years of experience and continuous improvement. Please remember that in order to be able to work
d maintained correctly. Please therefore read
you will find it worthwhile. Please pay particular attention to the safety notes. It
is a precondition of any warranty claim that all operating rules are maintained. In the event
of any faults or
defects, please contact your heating specialist or the HERZ Customer Service department.
heat pumps, we offer a 5 year or 10.000 compressor hours warranty on the closed refrigeration
circuit. As an option, the warranty can be extended (material warranty on the heat pump compressor) to 10
authorized service regular maintenance works are performed.
year warranty. We generally guarantee freedom
from defects of mobile objects purchased for a period of 2 years, to a maximum of 6.000 h
ours of operation.
moving purchased items, the guarantee is generally for a period of 3 years to a maximum for 9.000
hours of operation. Wearing parts are not covered by the guarantee/warranty. The warranty claim is
via a qualified personnel authorized of Herz as well as if not the
Any claim to warranty services requires maintenance to be carried out on an annual basis by
iod will not be extended if work is carried out under warranty. In the event of a
warranty claim, the due dates for payments owed to us will not be deferred. We will only provide a guarantee
The warranty will be carried out at our discretion by repairing the item purchased or replacing any defective
parts, by exchanging the item or by reducing the price. Parts or goods replaced are to be returned to us at
es and costs paid out in connection with installation and removal are to be
The Supplier shall under no circumstances be liable to the Customer, for any direct, indirect or consequential
This document is the translation from the German original. The reproduction or copying, even of extracts,
Recommended hydraulic diagrams can be found in the installation manual, while hydraulic balancing will be carried out by the
heating
H 5195 (current version) or VDI 2035.

TABLE OF CONTENT
1
NOTES ON DOCUMENTATI
1.1 General notes
................................
1.2 Symbols
................................
2 SAFETY NOTES
................................
2.1 Warning notes
................................
2.2 Installation
................................
2.3
Operation and maintenance
2.3.1 Operation
................................
2.3.2 Maintenance
................................
3
INFORMATION OF THE D
3.1 Intended use
................................
3.2 Type label
................................
3.3 Care and cleaning
................................
3.4 Maintenance
................................
4
SYSTEM OVERVIEW
5
MODE OF OPERATION
5.1 Refrigerant
................................
5.1.1
Characteristics of the refriger
5.1.2
Measures when refrigerant escapes
5.1.3
First aid measures contact with refrigerant
5.2 Safety devices
................................
5.2.1 Low pressure switch
................................
5.2.2 High pressure switch
................................
5.3
Operation conditions to be maintained
5.3.1 Permissible temperatures
5.3.2 Flow rate
................................
6
OPERATING CONDITIONS
7
TEMPERATURE MANAGER
8 T-CONTROL
................................
8.1 Starting the system
................................
Table of content
NOTES ON DOCUMENTATI
ON ................................
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Operation and maintenance
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INFORMATION OF THE D
EVICE
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................................................................
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SYSTEM OVERVIEW
................................
................................
MODE OF OPERATION
................................
................................
................................
................................................................
................................
Characteristics of the refriger
ant ................................................................
................................
Measures when refrigerant escapes
................................
................................
First aid measures contact with refrigerant
................................
................................
................................
................................
................................
................................
................................
................................
................................
................................
................................
Operation conditions to be maintained
................................
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................................
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OPERATING CONDITIONS
................................
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TEMPERATURE MANAGER
................................
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Table of content
3
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Table of content
4
8.2 Operation and handling
................................
8.3 Main menu
................................
8.4 Symbols explanation
................................
8.5 Code – entry
................................
8.6 Date and time selection
................................
8.7
Determining main menu values
8.7.1
Adding main menu display values
8.7.2 Deleting
main menu display values
8.8
Fault messages and warnings
8.9 Module overview
................................
8.10
Module structure and navigation to the most important settings
8.10.1 Heat pump module
................................
8.10.1.1
Switching on the heat pump
8.10.1.2
Switching off the heat pump
8.10.1.3
Further menu structure
8.10.2 Hot water tank module
................................
8.10.3 Buffer module
................................
8.10.4 Heating circuit module
................................
8.10.5 Time mode
................................
8.10.6 Solar module
................................
8.10.7 Hydraulic compensator
................................
8.10.8 Net pump
................................
8.10.9 Zone valve
................................
8.10.10
External requirement module
8.10.11
External additional boiler module
8.11 Menu settings
................................
8.11.1 Network configuration
................................
8.11.2 Modbus – settings
................................
8.11.3 Screensaver
................................
8.11.4 Information overview
................................
8.11.5 Sending E-mails
................................
8.11.6 E-Mail status report
................................
8.11.7 Server settings
................................
9
FAULT REPORTS AND TH
10 EC –
DECLARATION OF CONFO
11 NOTES
................................
................................
................................
................................
................................
................................................................
................................
................................
................................
................................
................................
................................................................
................................
................................
................................
................................
Determining main menu values
................................................................
................................
Adding main menu display values
................................................................
................................
main menu display values
................................
................................
Fault messages and warnings
................................................................
................................
................................
................................
................................
Module structure and navigation to the most important settings
................................
................................
................................
................................
Switching on the heat pump
................................
................................
Switching off the heat pump
................................
................................
Further menu structure
................................................................
................................
................................
................................
................................
................................
................................................................
................................
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External requirement module
................................................................
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External additional boiler module
................................................................
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FAULT REPORTS AND TH
EIR CORRECTIONS
.............................
DECLARATION OF CONFO
RMITY
................................
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76

1
NOTES ON DOCUMENTATI
1.1 General notes

Before commissioning, please read the documentation carefully and pay attention to the safety
instructions given in particular (see chapter

Make sure that you understand the instructions contained in this manual and that you are sufficiently
informed regarding the way in which th
please do not hesitate to contact HERZ.

For safety reasons, the owner of the system must not make any changes to the construction or the
state of the system without consulting the manufacturer or his

All connections are to be checked before the commissioning of the system in order to make sure that
they are leak-tight.
 A portable fire-
extinguisher of the prescribed size is to be kept by the boiler room. (Please heed the
relevant national regulations).

Carry out maintenance regularly or use our Customer Service department. The maintenance work is
explained in chapter 3.4!

When carrying out maintenance on the system or opening the control unit, the power supply is to be
disconnected and the generally valid safety regulations are to be heeded.

It is also not permitted for objects which are not required for the purpose
maintenance on the system to be kept in the boiler room.

Should you have any queries, please call us on +43 3357 / 42840

Initial commissioning must be carried out by the HERZ Customer Service department
specialist (otherwise any warranty claim will not be applicable).
1.2 Symbols
The symbols used on the device and/or used in this documentation have the following meaning:
Pictogram
Signal word
Documentation
Note
Warning note
Electric
voltage
Hot surface
Notes on documentation
NOTES ON DOCUMENTATI
ON
Before commissioning, please read the documentation carefully and pay attention to the safety
instructions given in particular (see chapter
2
). Please consult this manual if anything is unclear.
Make sure that you understand the instructions contained in this manual and that you are sufficiently
informed regarding the way in which th
e system works. Should you have any queries at any time,
please do not hesitate to contact HERZ.
For safety reasons, the owner of the system must not make any changes to the construction or the
state of the system without consulting the manufacturer or his
authorised representative.
All connections are to be checked before the commissioning of the system in order to make sure that
extinguisher of the prescribed size is to be kept by the boiler room. (Please heed the
relevant national regulations).
Carry out maintenance regularly or use our Customer Service department. The maintenance work is
When carrying out maintenance on the system or opening the control unit, the power supply is to be
disconnected and the generally valid safety regulations are to be heeded.
It is also not permitted for objects which are not required for the purpose
of operating or carrying out
maintenance on the system to be kept in the boiler room.
Should you have any queries, please call us on +43 3357 / 42840
-840.
Initial commissioning must be carried out by the HERZ Customer Service department
specialist (otherwise any warranty claim will not be applicable).
The symbols used on the device and/or used in this documentation have the following meaning:
Meaning
Reference to other documentation!
Important Note!
Notice of a dangerous situation!
Danger of electrical voltage!
Caution – hot surface
Notes on documentation
1
5
Before commissioning, please read the documentation carefully and pay attention to the safety
). Please consult this manual if anything is unclear.
Make sure that you understand the instructions contained in this manual and that you are sufficiently
e system works. Should you have any queries at any time,
For safety reasons, the owner of the system must not make any changes to the construction or the
authorised representative.
All connections are to be checked before the commissioning of the system in order to make sure that
extinguisher of the prescribed size is to be kept by the boiler room. (Please heed the
Carry out maintenance regularly or use our Customer Service department. The maintenance work is
When carrying out maintenance on the system or opening the control unit, the power supply is to be
of operating or carrying out
Initial commissioning must be carried out by the HERZ Customer Service department
or an authorised
The symbols used on the device and/or used in this documentation have the following meaning:

1
Notes on documentation
6
Pictogram
Signal word
Hand injuries.
Admittance
Notes on documentation
Meaning
Warning – against hand injuries.
No admittance without authorisation.

2 SAFETY NOTES
2.1 Warning notes
Risk of injury and damage to property due to improper handling of the system. Damage
to property is possible.
However, adherence to guidelines for transportation, installation, operation and maintenance notices as well
as
technical data (in the operating instructions, product documentation and on the equipment itself) which
are not specifically highlighted, is also vital to avoid breakdowns which may directly or indirectly cause major
personal or material damage.
General note
For reasons of clarity and possible permutations, this documentation does not contain all detailed information
and cannot take account of every conceivable operating or maintenance scenario. Should you require further
information or encounter specific p
roblems, which are not handled in detail in the documentation supplied,
you can obtain the required information from your specialist dealer or direct from HERZ.
People (including children) who, because of their physical, sensory or mental capabilities or
lack of experience or knowledge, are unable to use the equipment safely must not use this equipment unless
they are supervised or instructed by a responsible person.
Basic safety information
Due to its functionally limited electrical and
usage, operation and maintenance, if the equipment is not able to work according to its
appropriate use or improper interference occurs, it may cause serious health and
material damage. It is therefore conditional
installations, transportation, operation and maintenance will be carried out and
supervised by responsible, qualified persons.
When operating electrical systems, certain parts of those systems will always
hazardous electrical voltage or be exposed to a mechanical load. Only appropriately
qualified personnel may carry out work on the system. They must be thoroughly familiar
with the content of this and all other manuals. In order for this system to f
and without any problems, transportation, storage, operation and maintenance must be
carried out properly and carefully. Instructions and information on the systems must also
be heeded.
2.2 Installation
In order to ensure that the system will f
installation instructions are to be heeded during the installation of the system!
Documents from the manufacturer relating to the heating devices and components used are available from
HERZ on request.
2.3
Operation and maintenance
In order for the system to be operated and maintained safely, it must be operated and
maintained properly by qualified personnel while heeding the warnings in this
documentation and the instructions on the systems.
Safety notes
Risk of injury and damage to property due to improper handling of the system. Damage
to property is possible.
However, adherence to guidelines for transportation, installation, operation and maintenance notices as well
technical data (in the operating instructions, product documentation and on the equipment itself) which
are not specifically highlighted, is also vital to avoid breakdowns which may directly or indirectly cause major
For reasons of clarity and possible permutations, this documentation does not contain all detailed information
and cannot take account of every conceivable operating or maintenance scenario. Should you require further
roblems, which are not handled in detail in the documentation supplied,
you can obtain the required information from your specialist dealer or direct from HERZ.
People (including children) who, because of their physical, sensory or mental capabilities or
lack of experience or knowledge, are unable to use the equipment safely must not use this equipment unless
they are supervised or instructed by a responsible person.
Due to its functionally limited electrical and
mechanical characteristics with regard to
usage, operation and maintenance, if the equipment is not able to work according to its
appropriate use or improper interference occurs, it may cause serious health and
material damage. It is therefore conditional
that the planning and implementation of all
installations, transportation, operation and maintenance will be carried out and
supervised by responsible, qualified persons.
When operating electrical systems, certain parts of those systems will always
hazardous electrical voltage or be exposed to a mechanical load. Only appropriately
qualified personnel may carry out work on the system. They must be thoroughly familiar
with the content of this and all other manuals. In order for this system to f
and without any problems, transportation, storage, operation and maintenance must be
carried out properly and carefully. Instructions and information on the systems must also
In order to ensure that the system will f
unction properly, the relevant standards and the manufacturer’s
installation instructions are to be heeded during the installation of the system!
Documents from the manufacturer relating to the heating devices and components used are available from
Operation and maintenance
In order for the system to be operated and maintained safely, it must be operated and
maintained properly by qualified personnel while heeding the warnings in this
documentation and the instructions on the systems.
Safety notes
2
7
Risk of injury and damage to property due to improper handling of the system. Damage
However, adherence to guidelines for transportation, installation, operation and maintenance notices as well
technical data (in the operating instructions, product documentation and on the equipment itself) which
are not specifically highlighted, is also vital to avoid breakdowns which may directly or indirectly cause major
For reasons of clarity and possible permutations, this documentation does not contain all detailed information
and cannot take account of every conceivable operating or maintenance scenario. Should you require further
roblems, which are not handled in detail in the documentation supplied,
you can obtain the required information from your specialist dealer or direct from HERZ.
People (including children) who, because of their physical, sensory or mental capabilities or
because of their
lack of experience or knowledge, are unable to use the equipment safely must not use this equipment unless
mechanical characteristics with regard to
usage, operation and maintenance, if the equipment is not able to work according to its
appropriate use or improper interference occurs, it may cause serious health and
that the planning and implementation of all
installations, transportation, operation and maintenance will be carried out and
When operating electrical systems, certain parts of those systems will always
carry a
hazardous electrical voltage or be exposed to a mechanical load. Only appropriately
qualified personnel may carry out work on the system. They must be thoroughly familiar
with the content of this and all other manuals. In order for this system to f
unction safely
and without any problems, transportation, storage, operation and maintenance must be
carried out properly and carefully. Instructions and information on the systems must also
unction properly, the relevant standards and the manufacturer’s
Documents from the manufacturer relating to the heating devices and components used are available from
In order for the system to be operated and maintained safely, it must be operated and
maintained properly by qualified personnel while heeding the warnings in this

2 Safety notes
8
2.3.1 Operation
Covers which prevent contact with hot or rotating parts or which are required in order to
direct the flow of air correctly and thus ensure the effective functioning of the system
must not be opened during operation.
Bei etwaigen Störungen oder bei ungewöhnlichen Betriebszuständen ist die Anlage
sofort abzuschalten.
The generated system noise during operation does not present any danger to the
operator´s healt
h.
2.3.2 Maintenance
Before starting to carry out any work on the system, but especially before opening
covers protecting live parts, the system is to be properly disconnected from the power
supply. Besides the main circuits, attention is also to be paid to a
auxiliary circuits in the process.
The normal safety rules according to ÖNORM are:

Disconnect all poles and all sides!

Ensure that the system cannot be switched on again!

Check to ensure that no voltage is connected!
 Earth and short-circuit!

Cover adjacent live parts and locate hazardous areas!
These above-
mentioned measures must not be reversed until the system has been fully
installed and maintenance has been completed.
In order to prevent any maintenance errors, if maintenance is not carried out properly, it is recommended to
be carried out regularly by authorised personnel or by the HERZ Customer Service department.
Spare parts must be obtained directly from the manufa
be exposed to any health risks as a result of the noise generated by the machine.
Covers which prevent contact with hot or rotating parts or which are required in order to
direct the flow of air correctly and thus ensure the effective functioning of the system
must not be opened during operation.
Bei etwaigen Störungen oder bei ungewöhnlichen Betriebszuständen ist die Anlage
sofort abzuschalten.
Notify the HERZ Customer Service department immediately.
The generated system noise during operation does not present any danger to the
h.
Before starting to carry out any work on the system, but especially before opening
covers protecting live parts, the system is to be properly disconnected from the power
supply. Besides the main circuits, attention is also to be paid to a
ny existing additional or
auxiliary circuits in the process.
The normal safety rules according to ÖNORM are:
Disconnect all poles and all sides!
Ensure that the system cannot be switched on again!
Check to ensure that no voltage is connected!
Cover adjacent live parts and locate hazardous areas!
mentioned measures must not be reversed until the system has been fully
installed and maintenance has been completed.
In order to prevent any maintenance errors, if maintenance is not carried out properly, it is recommended to
be carried out regularly by authorised personnel or by the HERZ Customer Service department.
Spare parts must be obtained directly from the manufa
cturer or a distribution partner. The customer will not
be exposed to any health risks as a result of the noise generated by the machine.
Covers which prevent contact with hot or rotating parts or which are required in order to
direct the flow of air correctly and thus ensure the effective functioning of the system
Bei etwaigen Störungen oder bei ungewöhnlichen Betriebszuständen ist die Anlage
Notify the HERZ Customer Service department immediately.
The generated system noise during operation does not present any danger to the
Before starting to carry out any work on the system, but especially before opening
covers protecting live parts, the system is to be properly disconnected from the power
ny existing additional or
mentioned measures must not be reversed until the system has been fully
In order to prevent any maintenance errors, if maintenance is not carried out properly, it is recommended to
be carried out regularly by authorised personnel or by the HERZ Customer Service department.
cturer or a distribution partner. The customer will not

3
INFORMATION OF THE D
3.1 Intended use
The commotherm heat pumps may only be used for
 Heating
 Cooling and for
 Hot water preparation.
Any other use is not considered as intended.
In addition, the device may only be used within its technical range of application! The
technical area of application is shown in the assemb
To the intended use of the device

Recognition of the assembly instruction and electrical documentation

other applicable documents

Care and maintenance conditions (see chapter
3.2 Type label
The type plate is located on the bracket to which the condenser is attached. Hereto, the cover on the side of
the internal control box m
ust be unscrewed. The type label shows item number, production number, heating
power, application area, etc. (see
included in the external control box, which is installed in the building.
Information of the device
INFORMATION OF THE D
EVICE
The commotherm heat pumps may only be used for
Any other use is not considered as intended.
In addition, the device may only be used within its technical range of application! The
technical area of application is shown in the assemb
l
y instructions!
To the intended use of the device
the following also applies:
Recognition of the assembly instruction and electrical documentation
other applicable documents
Care and maintenance conditions (see chapter
3.3 and 3.4
)
The type plate is located on the bracket to which the condenser is attached. Hereto, the cover on the side of
ust be unscrewed. The type label shows item number, production number, heating
figure 3.1
). Because of the better accessibility, the type label is also
included in the external control box, which is installed in the building.
figure 3.1: Type label (Symbol)
Information of the device
3
9
In addition, the device may only be used within its technical range of application! The
y instructions!
Recognition of the assembly instruction and electrical documentation
)
The type plate is located on the bracket to which the condenser is attached. Hereto, the cover on the side of
ust be unscrewed. The type label shows item number, production number, heating
). Because of the better accessibility, the type label is also

3
Information of the device
10
3.3 Care and cleaning

The care of the cover parts of the heat pump can be performed with a damp cloth and commercially
available cleaning agents.

Do not use cleaning products that
the surface of the cover parts and it is possible that damages can occur on the heat pump.
3.4 Maintenance

The refrigeration circuit of the heat pump shoul
by an authorized person.

The inlet and outlet openings must be inspected in regular intervals and if necessary they must be
cleaned.

In addition it also should be checked if the condensate can run ou
purpose, the condensate drain should be inspected for dirt a
should be cleaned and de-iced.

Check the pressure on the heating side

Check the electrical connections and t
HERZ Energietechnik GmbH offers als
please contact our service hotline.
Information of the device
The care of the cover parts of the heat pump can be performed with a damp cloth and commercially
Do not use cleaning products that
contain
abrasives, acids and/or chlorine. These products could destroy
the surface of the cover parts and it is possible that damages can occur on the heat pump.
The refrigeration circuit of the heat pump shoul
d be subjected to an annual leak test and function check
The inlet and outlet openings must be inspected in regular intervals and if necessary they must be
In addition it also should be checked if the condensate can run ou
t unimpeded from the device. For this
purpose, the condensate drain should be inspected for dirt a
nd ice in regular intervals and
Check the pressure on the heating side
Check the electrical connections and t
he cabeling
HERZ Energietechnik GmbH offers als
o maintenance contracts. F
please contact our service hotline.
The care of the cover parts of the heat pump can be performed with a damp cloth and commercially
-
abrasives, acids and/or chlorine. These products could destroy
the surface of the cover parts and it is possible that damages can occur on the heat pump.
d be subjected to an annual leak test and function check
The inlet and outlet openings must be inspected in regular intervals and if necessary they must be
t unimpeded from the device. For this
nd ice in regular intervals and
, if necessary, it
o maintenance contracts. F
or further information

4 SYSTEM OVERVIEW
A Aspirating opening
B Exhaust opening
1 Evaporator
2 Electrical heat in the flow
(deactivated as standard)
3 Condenser pump
(optional inside the building)
System overview
SYSTEM OVERVIEW
commotherm LW-A 6-17
figure 4.1: Heat pump with cover
figure 4.2: Heat pump without cover
4 Internal control box
5 Refrigerant assembler
6 Fan
7 Compressor
8 Condenser
9 Expansion valve
System overview
4
11

5 Mode of operation
12
5
MODE OF OPERATION
figure 5.1
shows the cooling circuit of the commotherm LW
A refrigerant circulates and run through various changes of state
absorbs energy resp. heat from the heat source "air", which is supplied from the fan (1) and evaporates. The
temperature- and pressure-
niveau of the steamed refrigerant is rises up to a higher level over the four way
switching valve (3) by the
compressor (5). In the condenser (7) the heat is transferred to the heating system
and the refrigerant becomes liquid. In the refrigerant assembler (10) the liquefied working medium is
collected. The remaining gas fraction is retained and only the liquid
and the suction glas (12). With help
temperature- and pressure-
niveau. At this point the cycle is closed now and starts all over again. The low (
and high pressure switch (6) serves as a safety device which ensures that the pressures in the refrigeration
circuit remain within the defined range.
figure 5.1
: Functionality of the commotherm LW
1 Evaporator
2 Fan
3 Four way switching valve
4 Low pressure switch
5 Compressor
6 High pressure switch
7 Condenser
MODE OF OPERATION
shows the cooling circuit of the commotherm LW
-
A heat pump with its most important components
A refrigerant circulates and run through various changes of state
: In the evaporator (2) the r
absorbs energy resp. heat from the heat source "air", which is supplied from the fan (1) and evaporates. The
niveau of the steamed refrigerant is rises up to a higher level over the four way
compressor (5). In the condenser (7) the heat is transferred to the heating system
and the refrigerant becomes liquid. In the refrigerant assembler (10) the liquefied working medium is
collected. The remaining gas fraction is retained and only the liquid
refrigerant passes the filter dryer (11)
and the suction glas (12). With help
of the expansi
on valve (13) the refrigerant is transported to a lower
niveau. At this point the cycle is closed now and starts all over again. The low (
and high pressure switch (6) serves as a safety device which ensures that the pressures in the refrigeration
circuit remain within the defined range.
: Functionality of the commotherm LW
-A heat pump
8
Electrical heat in the flow
(deactivated as standard)
9 Condenser pump
10 Refrigerant assembler
11 Filter dryer
12 Sight glass
13 Expansion valve
A heat pump with its most important components
.
: In the evaporator (2) the r
efrigerant
absorbs energy resp. heat from the heat source "air", which is supplied from the fan (1) and evaporates. The
niveau of the steamed refrigerant is rises up to a higher level over the four way
compressor (5). In the condenser (7) the heat is transferred to the heating system
and the refrigerant becomes liquid. In the refrigerant assembler (10) the liquefied working medium is
refrigerant passes the filter dryer (11)
on valve (13) the refrigerant is transported to a lower
niveau. At this point the cycle is closed now and starts all over again. The low (
4)
and high pressure switch (6) serves as a safety device which ensures that the pressures in the refrigeration
Electrical heat in the flow

The HERZ LWA heat pump is an “electrically
electrically driven compressor compresses and feeds the refrigerant through a pipe circuit consisting of
copper pipes,
whereby pressure up to 43 bar may arise.
The device is under voltage. Removing the device
equipment parts may lead to serious physical harm.
The refrigerant supplied can affect surfaces of the equipment parts (pipes
compressor) at temperatures of more than 100° C (
Therefore:
Work on equipment parts as well as electrical cabling may only be carried out by
qualified specialists.
5.1 Refrigerant
Generally, what is understood by a refrigerant is a
refrigerant circulates and run through various
The HERZ heat pump works with the refrigerant R410a, which consists of the following components:
 50% -
Pentafluorethane (R125)
 50% - Difluormethane (R32)
5.1.1
Characteristics of the refrigerant
According to ÖNORM EN378-
1 refrigerants are divided up into groups with regard to health and safety:
Classification according to flammability
Group 1: No flame propagation
Group 2: Lower flammability
Group 3: Greater flammability
Table 5.1
shows the position of the refrigera
Table 5.1: Safet
y group for the used refrigerant
Greater flammability
Lower flammability
No flame propagation
Other characteristics are:
 Ozone reduction potential: 0
 Boiling temperature: -
48,5 °C
Mode of operation
The HERZ LWA heat pump is an “electrically
-
driven compression heat pump with the refrigerant, R410A”. An
electrically driven compressor compresses and feeds the refrigerant through a pipe circuit consisting of
whereby pressure up to 43 bar may arise.
The device is under voltage. Removing the device
casing as well as working on the
equipment parts may lead to serious physical harm.
The refrigerant supplied can affect surfaces of the equipment parts (pipes
compressor) at temperatures of more than 100° C (

risk of burning).
Work on equipment parts as well as electrical cabling may only be carried out by
qualified specialists.
Generally, what is understood by a refrigerant is a
working material for heat pumps or cooling machines. A
refrigerant circulates and run through various
changes of state.
The HERZ heat pump works with the refrigerant R410a, which consists of the following components:
Pentafluorethane (R125)
Characteristics of the refrigerant
1 refrigerants are divided up into groups with regard to health and safety:
Classification according to flammability
Classification according to toxicity
Group A: Lower toxicity
Group B: Higher toxicity
shows the position of the refrigera
nt, R410A, used in safety group A1.
y group for the used refrigerant
R410A
Safety group
Greater flammability
A3
Lower flammability
A2
No flame propagation
A1
Lower toxicity
48,5 °C
Mode of operation
5
13
driven compression heat pump with the refrigerant, R410A”. An
electrically driven compressor compresses and feeds the refrigerant through a pipe circuit consisting of
casing as well as working on the
The refrigerant supplied can affect surfaces of the equipment parts (pipes
and
risk of burning).
Work on equipment parts as well as electrical cabling may only be carried out by
working material for heat pumps or cooling machines. A
The HERZ heat pump works with the refrigerant R410a, which consists of the following components:
1 refrigerants are divided up into groups with regard to health and safety:
Classification according to toxicity
B3
B2
B1
Higher toxicity

5 Mode of operation
14
5.1.2 Measu
res when refrigerant escapes
If refrigerant escapes, fast evaporation of the fluid may cause frostbite. Steam is also heavier than air, which
may lead to suffocation due to displacement of oxygen in the air. If an escape of refrigerant is noticed (it is
heard to escape, icing over of the exit point), the following measures should be taken:

Ensure there is adequate ventilation!
 Close and seal the
door to the room where the equipment is located.

Notify HERZ service or customer service!

People must leave the room where the equipment is located straight away.

Consult the doctor or veterinarian if people or animals were exposed to an increased dose fo
period!

Switch off the power immediately!

In the event of fire, any type of fire extinguisher may be used!
There is no risk of the R410A refrigerant escaping if the HERZ heat pump is used
correctly. If there is an escape of ref
suffocation (air displacement) and frostbite (exit points may become extremely cold). In
chapter 5.1.3
additional firs
5.1.3
First aid measures contact with refrigerant
General
Tips

In the event of unconsciousness, place carefully on the side and seek medical
advice.

Never allow an unconscious person to take in

With irregular breathing or if breathing stops, try artificial respiration. If complaints
persist, seek medical advice.
Inhalation 
Take the person out of the contaminated area

Respiration with breathing apparatus or oxygen supply

In the event of difficulties with breathing or nerve problems, seek medical advice

Go into the fresh air
Contact with the
eyes

Open the eyelids wide to vaporise the agent

Rinse the eyes out with flowing water for a few minutes, opening the eyelids

In the event of continuing sore eyes, seek medical advice
Contact with the
skin

Vaporise the agent

Rinse with lukewarm water

If soreness continues or the skin is red, seek medical advice

Remove soiled or soaked clothing immediately
Never remove refrigerant, never let it escape or never add additional refrigerant by
yourself. This is a risk to humans, animals, the environment and the device itself.
res when refrigerant escapes
If refrigerant escapes, fast evaporation of the fluid may cause frostbite. Steam is also heavier than air, which
may lead to suffocation due to displacement of oxygen in the air. If an escape of refrigerant is noticed (it is
heard to escape, icing over of the exit point), the following measures should be taken:
Ensure there is adequate ventilation!
door to the room where the equipment is located.
Notify HERZ service or customer service!
People must leave the room where the equipment is located straight away.
Consult the doctor or veterinarian if people or animals were exposed to an increased dose fo
Switch off the power immediately!
In the event of fire, any type of fire extinguisher may be used!
There is no risk of the R410A refrigerant escaping if the HERZ heat pump is used
correctly. If there is an escape of ref
r
igerant due to improper use, there is a risk of
suffocation (air displacement) and frostbite (exit points may become extremely cold). In
additional firs
t aid measures for contact with refrigerant are described.
First aid measures contact with refrigerant
In the event of unconsciousness, place carefully on the side and seek medical
Never allow an unconscious person to take in
anything by mouth.
With irregular breathing or if breathing stops, try artificial respiration. If complaints
persist, seek medical advice.
Take the person out of the contaminated area
Respiration with breathing apparatus or oxygen supply
In the event of difficulties with breathing or nerve problems, seek medical advice
Go into the fresh air
Open the eyelids wide to vaporise the agent
Rinse the eyes out with flowing water for a few minutes, opening the eyelids
In the event of continuing sore eyes, seek medical advice
Vaporise the agent
Rinse with lukewarm water
If soreness continues or the skin is red, seek medical advice
Remove soiled or soaked clothing immediately
Never remove refrigerant, never let it escape or never add additional refrigerant by
yourself. This is a risk to humans, animals, the environment and the device itself.
If refrigerant escapes, fast evaporation of the fluid may cause frostbite. Steam is also heavier than air, which
may lead to suffocation due to displacement of oxygen in the air. If an escape of refrigerant is noticed (it is
heard to escape, icing over of the exit point), the following measures should be taken:
Consult the doctor or veterinarian if people or animals were exposed to an increased dose fo
r a long
There is no risk of the R410A refrigerant escaping if the HERZ heat pump is used
igerant due to improper use, there is a risk of
suffocation (air displacement) and frostbite (exit points may become extremely cold). In
t aid measures for contact with refrigerant are described.
In the event of unconsciousness, place carefully on the side and seek medical
anything by mouth.
With irregular breathing or if breathing stops, try artificial respiration. If complaints
In the event of difficulties with breathing or nerve problems, seek medical advice
Rinse the eyes out with flowing water for a few minutes, opening the eyelids
wide
Never remove refrigerant, never let it escape or never add additional refrigerant by
yourself. This is a risk to humans, animals, the environment and the device itself.

5.2 Safety devices
The pressures in the commotherm LW
called pressure switches are built in. These serve on the one hand as a safety
to ensure that the heat pump works in the defined range. The pressure switches are designed as chamber
pressure
switches, i.e. the set, adjusted pressures cannot be reset by unauthorised persons. The pressure
switches are also used as low or high pressure switches. These devices are briefly described below.
5.2.1 Low pressure switch
The low pressure switch turns off the
this at low pressure (low pressure may be caused by a lack of refrigerant, for example).
5.2.2 High pressure switch
High pressure switches also serve to switch off the compressor in an emergen
pressure switches, however, this turns off the compressor at a higher pressure. In the event of the LWA heat
pump this occurs at pressures of > 42 bar.
5.3
Operation conditions to be maintained
Some important operating conditions are d
summary on avoiding faults, if these conditions are not adhered to.
5.3.1 Permissible temperatures
The heat
pump should be operated with a maximum flow temperature of 58° C. If a flow temperature of more
than 58° C is selected, the heat pump works inefficiently. The compressor is also very greatly overloaded
and the equipment will keep malfunctioning.
In general
, the flow temperature should actually be adapted to the actual operating temperatures and be set
as low as possible.
5.3.2 Flow rate
If there is no flow rate in the heating equipment, the system will be extremely overloaded until release of the
safety device, i
n this case the high pressure switch. The water flow rate and system pressure should
therefore be checked.
Table 5.2
: Overview of the operation conditions to be maintained
Fault source
Possible consequences
Flow temperature
> 58°C

Device works inefficiently

Device is constantly malfunctioning

Compressor is heavily overloaded
No flow rate for
heating equipment

The system will be extremely
overloaded until the safety device is
released (=high
Mode of operation
The pressures in the commotherm LW
-A heat pump should remain within
a define range. To ensure this, so
called pressure switches are built in. These serve on the one hand as a safety
device, and on the other hand
to ensure that the heat pump works in the defined range. The pressure switches are designed as chamber
switches, i.e. the set, adjusted pressures cannot be reset by unauthorised persons. The pressure
switches are also used as low or high pressure switches. These devices are briefly described below.
The low pressure switch turns off the
compressor at an operating pressure of < 1 bar and therefore protects
this at low pressure (low pressure may be caused by a lack of refrigerant, for example).
High pressure switches also serve to switch off the compressor in an emergen
cy. In contrast with low
pressure switches, however, this turns off the compressor at a higher pressure. In the event of the LWA heat
pump this occurs at pressures of > 42 bar.
Operation conditions to be maintained
Some important operating conditions are d
escribed below, which must be adhered to.
summary on avoiding faults, if these conditions are not adhered to.
pump should be operated with a maximum flow temperature of 58° C. If a flow temperature of more
than 58° C is selected, the heat pump works inefficiently. The compressor is also very greatly overloaded
and the equipment will keep malfunctioning.
, the flow temperature should actually be adapted to the actual operating temperatures and be set
If there is no flow rate in the heating equipment, the system will be extremely overloaded until release of the
n this case the high pressure switch. The water flow rate and system pressure should
: Overview of the operation conditions to be maintained
Possible consequences
Measures to avoid faults
Device works inefficiently

Adapt
operating temperatures to
the actual
requirements and set as
low as possible
Device is constantly malfunctioning
Compressor is heavily overloaded
The system will be extremely
overloaded until the safety device is
released (=high
pressure switch)

With new systems, daily checking
of the water flow rate is required
(thereafter annually).
Mode of operation
5
15
a define range. To ensure this, so
-
device, and on the other hand
to ensure that the heat pump works in the defined range. The pressure switches are designed as chamber
switches, i.e. the set, adjusted pressures cannot be reset by unauthorised persons. The pressure
switches are also used as low or high pressure switches. These devices are briefly described below.
compressor at an operating pressure of < 1 bar and therefore protects
this at low pressure (low pressure may be caused by a lack of refrigerant, for example).
cy. In contrast with low
pressure switches, however, this turns off the compressor at a higher pressure. In the event of the LWA heat
escribed below, which must be adhered to.
Table 5.2 also gives a
pump should be operated with a maximum flow temperature of 58° C. If a flow temperature of more
than 58° C is selected, the heat pump works inefficiently. The compressor is also very greatly overloaded
, the flow temperature should actually be adapted to the actual operating temperatures and be set
If there is no flow rate in the heating equipment, the system will be extremely overloaded until release of the
n this case the high pressure switch. The water flow rate and system pressure should
Measures to avoid faults
operating temperatures to
requirements and set as
low as possible
With new systems, daily checking
of the water flow rate is required
(thereafter annually).

6 Operating conditions
16
6
OPERATING CONDITIONS
Ready
There are
essentially two versions to be differentiated here, for which the heat pump may be in the operating
condition "ready”:

In the “OFF” mode the heat pump does not work and is ready to start.

If the heat pump is in “heating operation” or “cooling operation” mo
consumer, the operating condition "ready" also appears
Waiting
This condition serves as compression protection. If the compressor is switched off and switched on again
straight afterwards, the compressor only starts afte
minutes. The “wait” condition is then displayed. The compressor may also only be started 6 times per hour. If
the compressor is started more frequently, it also remains in “wait” operating condition.
Pump flow
In this condition, the source and condenser pump start up and run for a pre
circulation in both circuits.
Compressor
In this condition, the heat pump run and heat or cooling consumer sends a request to the heat pump.
Stop
In this condition, the heat pump is switched off but the source and condenser pump are still running in so
called pump stoppage to transport any residual heat / cold to the heat consumer. The pump stoppage
continues according to the fixed set pump
Error
A serious fault has occurred. The heat pump and all outputs are switched off too.
Cooling mode
This condition indicates that the heat pump is cooling, i.e. the process is reversed and the system is taking
heat and diverts this to the
source, for example.
Min. temp.
The heat pump changes in this condition as soon as the source has reached a minimum temperature. The
condenser pump is switched on, which causes a circulation and an increase of the temperature.
Max. temp.
This condition is
reached when the flow temperature of the heat pump is greater than the set maxim
temperature (usually 58°C). To lower the flow temperature the condenser pump is switched on. The pump
continues running until the maximum temperature is undershot.
Residual heat
The compressor is switched off here and residual heat is supplied to heat consumers.
External stop
The input “external stop” has responded and the heat pump is switched off. The heat pump only starts up
again if the input “external stop” is no longer re
limit switching by the energy supply company.
Bivalent Alt.
If this operating state is displayed, the connected second heat generator is running and the heat pump is not
switched on.
OPERATING CONDITIONS
essentially two versions to be differentiated here, for which the heat pump may be in the operating
In the “OFF” mode the heat pump does not work and is ready to start.
If the heat pump is in “heating operation” or “cooling operation” mo
de but there is no request from the
consumer, the operating condition "ready" also appears
This condition serves as compression protection. If the compressor is switched off and switched on again
straight afterwards, the compressor only starts afte
r minimal downtime, which may be, for example, 10
minutes. The “wait” condition is then displayed. The compressor may also only be started 6 times per hour. If
the compressor is started more frequently, it also remains in “wait” operating condition.
In this condition, the source and condenser pump start up and run for a pre
-
set time. This serves to build up
In this condition, the heat pump run and heat or cooling consumer sends a request to the heat pump.
In this condition, the heat pump is switched off but the source and condenser pump are still running in so
called pump stoppage to transport any residual heat / cold to the heat consumer. The pump stoppage
continues according to the fixed set pump
stopping time.
A serious fault has occurred. The heat pump and all outputs are switched off too.
This condition indicates that the heat pump is cooling, i.e. the process is reversed and the system is taking
source, for example.
The heat pump changes in this condition as soon as the source has reached a minimum temperature. The
condenser pump is switched on, which causes a circulation and an increase of the temperature.
reached when the flow temperature of the heat pump is greater than the set maxim
temperature (usually 58°C). To lower the flow temperature the condenser pump is switched on. The pump
continues running until the maximum temperature is undershot.
The compressor is switched off here and residual heat is supplied to heat consumers.
The input “external stop” has responded and the heat pump is switched off. The heat pump only starts up
again if the input “external stop” is no longer re
sponding. This input can respond, for example, through phase
limit switching by the energy supply company.
If this operating state is displayed, the connected second heat generator is running and the heat pump is not
essentially two versions to be differentiated here, for which the heat pump may be in the operating
de but there is no request from the
This condition serves as compression protection. If the compressor is switched off and switched on again
r minimal downtime, which may be, for example, 10
minutes. The “wait” condition is then displayed. The compressor may also only be started 6 times per hour. If
the compressor is started more frequently, it also remains in “wait” operating condition.
set time. This serves to build up
In this condition, the heat pump run and heat or cooling consumer sends a request to the heat pump.
In this condition, the heat pump is switched off but the source and condenser pump are still running in so
-
called pump stoppage to transport any residual heat / cold to the heat consumer. The pump stoppage
This condition indicates that the heat pump is cooling, i.e. the process is reversed and the system is taking
The heat pump changes in this condition as soon as the source has reached a minimum temperature. The
condenser pump is switched on, which causes a circulation and an increase of the temperature.
reached when the flow temperature of the heat pump is greater than the set maxim
temperature (usually 58°C). To lower the flow temperature the condenser pump is switched on. The pump
The compressor is switched off here and residual heat is supplied to heat consumers.
The input “external stop” has responded and the heat pump is switched off. The heat pump only starts up
sponding. This input can respond, for example, through phase
If this operating state is displayed, the connected second heat generator is running and the heat pump is not

7 TEMPERATURE
MANAGER
The heat demand of the individual modules (hot water tank, buffer tank, heating circuit, solar, etc.) is
controlled by the temperature manager. The below
functionality of the temperature manager. A module contains of an in
required demand temperature to the temperature
of an in
ternal calculated temperature demand + set up increase. The heat supplier (= heat generator
respectively heat
pump/buffer), which receives the different module demand temperatures from the
temperature manager, must supply the required temperature demand t
temperature manager calculates the maximum demand temperature of all modules. These modules receive
the existing temperature.
Example:
Heat supplier = heat pump
Module 1 & 2
= heating circuit 1 & 2
Module 3 = hot water tank
Module 4 = buffer
calculated required
temperature [°C]
temperature increase [°C]
required temperature of the
modules [°C]
Maximum temperature requirement
HEAT
PUMP
(Heat supplier)
BUFFER
(Module 4)
Temp.requirement
+ increase
TEMPERATURE MANAGER
figure 7.1
: Temperature manager
Temperature manager
MANAGER
The heat demand of the individual modules (hot water tank, buffer tank, heating circuit, solar, etc.) is
controlled by the temperature manager. The below
-mentioned scheme (see
figure
functionality of the temperature manager. A module contains of an in
-
and output. Every module sends a
required demand temperature to the temperature
manager. The sent required
demand temperature is a sum
ternal calculated temperature demand + set up increase. The heat supplier (= heat generator
pump/buffer), which receives the different module demand temperatures from the
temperature manager, must supply the required temperature demand t
o the different modules. The
temperature manager calculates the maximum demand temperature of all modules. These modules receive
= heating circuit 1 & 2
Heating circuit
1
Heating circuit
2
Hot water tank
temperature [°C]
40 30
53
temperature increase [°C]
5 3 0
required temperature of the
modules [°C]
45 33
53
Maximum temperature requirement
53
BUFFER
(Module 4)
HEATING
CIRCUIT 1
(Module 1)
HEATING
CIRCUIT 2
(Module 2)
Temp.requirement
+ increase
Temp.requirement
+ increase Temp.requirement + increase
: Temperature manager
Temperature manager
7
17
The heat demand of the individual modules (hot water tank, buffer tank, heating circuit, solar, etc.) is
figure
7.1) explains the
and output. Every module sends a
demand temperature is a sum
ternal calculated temperature demand + set up increase. The heat supplier (= heat generator
pump/buffer), which receives the different module demand temperatures from the
o the different modules. The
temperature manager calculates the maximum demand temperature of all modules. These modules receive
Hot water tank
Buffer
53
48
2
53
50
HOT WATER
TANK
(Module 3)
Temp.requirement
+ increase

8 T-CONTROL
18
8 T-CONTROL
The handling and menu navigation are described in this chapter. Every single T
explained in chapter 8.10 (page 27
).
8.1 Starting the system
To switch on the display, the following condition must be fulfilled:

The heat pump must be connected to the power supply
If it is fulfilled, the starting process of the display, which takes 1
figure 8.1
: Starting process of the display
8.2
Operation and handling
The touch panel is a touch-
sensitive screen and control unit. By touching the screen you can change
released values or move to other pages. The s
pencil, etc.
figure 8.2
: Operation of the screen with fingers or pen
The handling and menu navigation are described in this chapter. Every single T
-
CONTROL parameter is
).
To switch on the display, the following condition must be fulfilled:
The heat pump must be connected to the power supply
If it is fulfilled, the starting process of the display, which takes 1
-
2 minutes, starts (see
: Starting process of the display
Operation and handling
sensitive screen and control unit. By touching the screen you can change
released values or move to other pages. The s
creen navigation and input can be done with finger, pen,
: Operation of the screen with fingers or pen
CONTROL parameter is
2 minutes, starts (see
figure 8.1).
sensitive screen and control unit. By touching the screen you can change
creen navigation and input can be done with finger, pen,

8.3 Main menu
After start up figure 8.3
will appear. In the centre of the screen important values according the heat pump,
buffer, hot water tank, heating circuit and so on are shown. The shown values can be adapted individually
(see chapter 8.7 ).
figure 8.3: Main menu
If the following button is pressed:
the main menu will be displayed
(see figure
8
fault messages (warnings & alarms) will be displayed.
(see figure
8
the individual modules (heat pump, hot water tank, buffer, heat
will be displayed.
(see from
chapter
the menu settings (network configuration, E
(see
chapter
the date & time can be set up
(see
chapter
the code input screen will be shown
(see
chapter
Ready
In general the field is used to display the operating conditions, which is shown in
chapter 6
more important values will be shown on the second page
T
will appear. In the centre of the screen important values according the heat pump,
buffer, hot water tank, heating circuit and so on are shown. The shown values can be adapted individually
If the following button is pressed:
the main menu will be displayed
8
.3)
fault messages (warnings & alarms) will be displayed.
8
.14 or chapter 8.8)
the individual modules (heat pump, hot water tank, buffer, heat
will be displayed.
chapter
8.9)
the menu settings (network configuration, E
-
Mail, screen saver) will be displayed
chapter
8.11, changing with code only!)
the date & time can be set up
chapter
8.6, changing with code only!)
the code input screen will be shown
chapter
8.5)
In general the field is used to display the operating conditions, which is shown in
more important values will be shown on the second page
T
-CONTROL
8
19
will appear. In the centre of the screen important values according the heat pump,
buffer, hot water tank, heating circuit and so on are shown. The shown values can be adapted individually
the individual modules (heat pump, hot water tank, buffer, heat
ing circuit, solar, etc.)
Mail, screen saver) will be displayed
In general the field is used to display the operating conditions, which is shown in

8 T-CONTROL
20
8.4 Symbols explanation
In this section important symbols are explained, which are displayed on the following menu pictures.
With the
aggregate
The symbol is only

the code has been entered (se

the heat pump is in the “off
If the Aggregate-
Test is active, the symbol will turn green and the message “AGG
ACTIVE” is shown on the display.
Information
such as firmware
module (heat pump, hot water tank, buffer, solar, heating circuit).
These symbols (
navigation
tank, buffer, solar, heating circuit, hydr. compensator, net pump, zone valve, ext.
An alternative to the illustrated navigation method is the wiping to the right or left.
Back to the modules overview (heat pump, hot water tank, buffer, solar, heating circuit, etc.).
In this section important symbols are explained, which are displayed on the following menu pictures.
aggregate
-
test
connected components can be tested individually.
visible, if
the code has been entered (se
e chapter 8.5, page 21) and
the heat pump is in the “off
” operation mode (only at the heat pump aggregate
Test is active, the symbol will turn green and the message “AGG
ACTIVE” is shown on the display.
such as firmware
-module, hardware-
module, software version etc.,
module (heat pump, hot water tank, buffer, solar, heating circuit).
navigation
) can be used to navigate in each module (heat pump, hot water
tank, buffer, solar, heating circuit, hydr. compensator, net pump, zone valve, ext.
An alternative to the illustrated navigation method is the wiping to the right or left.
Back to the modules overview (heat pump, hot water tank, buffer, solar, heating circuit, etc.).
In this section important symbols are explained, which are displayed on the following menu pictures.
connected components can be tested individually.
” operation mode (only at the heat pump aggregate
-test!)
Test is active, the symbol will turn green and the message “AGG
-Test
module, software version etc.,
of each
) can be used to navigate in each module (heat pump, hot water
tank, buffer, solar, heating circuit, hydr. compensator, net pump, zone valve, ext.
demand).
An alternative to the illustrated navigation method is the wiping to the right or left.
Back to the modules overview (heat pump, hot water tank, buffer, solar, heating circuit, etc.).