Viessmann VITOCAL 150-A Operating instructions

Operating instructions
for the system user
VIESMANN
Heat pump control unit with 7" touch display
VITOCAL 150-A
VITOCAL 151-A
6171827 GB 11/2021 Please keep safe.

2
Please follow these safety instruc-
tions closely to prevent accidents
and material losses.
Safety instructions explained
Danger
This symbol warns against the risk
of injury.
!Please note
This symbol warns against the risk
of material losses and environmen-
tal pollution.
Note
Details identified by the word "Note"
contain additional information.
The outdoor unit contains easily flamma-
ble refrigerant in safety group A3
according to ISO 817 and ANSI/
ASHRAE Standard 34.
Target group
These operating instructions are inten-
ded for system users.
This appliance can also be operated by
children aged 8 and older, as well as by
individuals with reduced physical, sen-
sory or mental faculties or those lacking
in experience and knowledge, provided
such individuals are supervised or have
been instructed in the safe use of this
appliance as well as in any risks arising
from it.
!Please note
Supervise children in the proximity
of the appliance.
■Never permit children to play with
the appliance.
■Cleaning and user maintenance
must never be carried out by
unsupervised children.
Safety instructions for working on the system
The outdoor unit contains flammable
refrigerant R290 (propane C3H8). If
there is a leak, the escaping refrigerant
may form a flammable or explosive
atmosphere in the ambient air. A safety
zone is defined in the immediate vicinity
of the outdoor unit, in which special
rules apply.
Illustration of the safety zone: See chap-
ter "Safety zone".
Standing and working in the safety
zone
Danger
Risk of explosion: Escaping refrig-
erant may form a flammable or
explosive atmosphere in the ambi-
ent air.
Take the following measures to pre-
vent fire and explosion in the safety
zone:
Safety instructions
For your safety
6171827

3
■Keep ignition sources away, e.g. naked
flames, hot surfaces, electrical devices
not free of ignition sources, mobile
devices with integrated batteries (e.g.
mobile phones, fitness watches, etc.).
■Do not use flammable materials, e.g.
sprays or other flammable gases.
■Do not remove, block or bridge safety
equipment.
■Do not make any alterations to the out-
door unit:
–Do not change, load or damage inlet/
outlet lines and electrical connec-
tions/cables.
–Do not change the surroundings.
–Do not remove any components or
seals.
Connection of the system
■The appliances may be connected and
commissioned only by authorised con-
tractors.
■Observe the specified electrical con-
nection requirements.
■Modifications to the existing installation
may only be carried out by authorised
specialists.
Danger
Incorrectly executed work on the
system can lead to life threatening
accidents.
Work on electrical equipment may
only be carried out by a qualified
electrician.
Working on the system
■All adjustments and work on the sys-
tem must be performed as specified in
these operating instructions.
Other work on the system may only be
carried out by authorised contractors,
e.g. maintenance, service and repairs.
■Do not open the appliances.
■Do not remove casings.
■Do not modify or remove attachments
or fitted accessories.
■Do not open or tighten pipe connec-
tions.
■Work on the refrigerant circuit of the
outdoor unit may only be carried out by
authorised heating contractors. These
heating contractors must be trained in
accordance with EN 378 Part 4 or
IEC 60335-2-40, Section HH. The cer-
tificate of competence from an industry
accredited body.
Danger
Hot surfaces can cause burns.
■Do not open the appliance.
■Do not touch the hot surfaces of
uninsulated pipes and fittings.
Auxiliary components, spare and
wearing parts
!Please note
Components that were not tested
with the system may cause system
damage, or may affect its functions.
Have all installation or replacement
work carried out exclusively by
heating contractors.
Safety instructions
For your safety (cont.)
6171827

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Safety instructions for operating the system
Protect the system against third party
influence, damage and environmental
influences.
What to do if refrigerant escapes
from the outdoor unit
A low pressure fault may indicate escap-
ing refrigerant.
Danger
Escaping refrigerant can lead to fire
and explosions that result in very
serious injuries or death. There is a
risk of asphyxiation if it is breathed
in.
If there is a suspicion of escaping
refrigerant, note the following:
■Ensure very good ventilation
especially in the floor area of the
outdoor unit.
■No smoking! Prevent naked
flames and sparks. Never switch
lights or electrical appliances on
or off.
■Initiate rescue measures for indi-
viduals.
■Inform the authorised contractor.
■From a safe position, switch off
the electricity supply for all system
components.
Danger
Direct contact with liquid and gas-
eous refrigerant can cause serious
damage to health, e.g. frostbite
and/or burns. There is a risk of
asphyxiation if it is breathed in.
■Prevent direct contact with liquid
and gaseous refrigerant.
■Never breathe in refrigerant
vapours.
■Initiate rescue measures for indi-
viduals.
If there is a fire
Danger
Fire presents a risk of burns and
explosion.
■From a safe position, switch off
the electricity supply for all system
components.
■Notify fire service.
■Initiate rescue measures for indi-
viduals.
■Only attempt to extinguish the fire
if this poses no risk of injury. Use
a tested fire extinguisher, class
ABC.
What to do if the outdoor unit ices up
!Please note
A build-up of ice in the condensate
pan and in the fan area of the out-
door unit can cause damage to the
equipment.
■In case of ice formation, notify
heating contractor.
■Do not use mechanical items/aids
for the removal of ice.
■If ice regularly builds up on the
outdoor unit (e.g. in areas where
frost and heavy fog occur fre-
quently), have a contractor install
fan ring heating (accessories) that
is suitable for refrigerant R290
and/or an electric ribbon heater in
the condensate pan (accessories
or factory-fitted).
Safety instructions
For your safety (cont.)
6171827

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Conditions for positioning the indoor unit
Danger
Easily flammable liquids and mate-
rials (e.g. naphtha/petrol, solvents,
cleaning agents, paints or paper)
can cause deflagration and fire.
Never store or use such materials
in the boiler room or in direct prox-
imity to the indoor unit.
!Please note
Incorrect ambient conditions can
result in system damage and can
put safe operation at risk.
Maintain the permissible ambient
temperatures as detailed in these
operating instructions.
Safety instructions
For your safety (cont.)
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1. Safety and liability Safety zone ............................................................................................ 9
Liability ................................................................................................... 10
2. Introductory information Symbols ................................................................................................. 11
Intended use .......................................................................................... 11
Product information ................................................................................ 12
■Type plate ........................................................................................... 12
■Heat pump control unit ....................................................................... 12
■Permissible ambient temperatures in the installation room ................ 13
■Outside temperature limits .................................................................. 13
■Safety zone ......................................................................................... 13
Service link ............................................................................................ 13
Low power radio .................................................................................... 13
Licence information ................................................................................ 13
Commissioning ...................................................................................... 14
Your system is preset at the factory ....................................................... 14
Energy saving tips ................................................................................. 14
Tips for greater comfort ......................................................................... 15
Quieter operation ................................................................................... 15
3. Operation Operating principles ............................................................................... 16
■Touchscreen ....................................................................................... 16
■Status display with Lightguide ............................................................ 16
Screen displays ..................................................................................... 16
■Standby display .................................................................................. 16
■Default displays .................................................................................. 16
■Home screen ...................................................................................... 16
Buttons and symbols ............................................................................. 17
■Buttons and symbols in menu bar A ................................................. 17
■Buttons and symbols in function area B ........................................... 17
■Buttons and symbols in navigation area C ....................................... 18
Overview of the "Main menu" ............................................................... 18
■Menus available in the "Main menu" ................................................. 18
Operating program ................................................................................. 19
■Operating programs for room heating, room cooling and DHW heat-
ing ....................................................................................................... 19
■Special operating programs and functions ......................................... 19
Procedure for setting a time program .................................................... 19
■Time programs and time phases ........................................................ 20
■Setting time phases ............................................................................ 20
■Copying the time program to other days of the week ......................... 21
■Changing time phases ........................................................................ 21
■Deleting time phases .......................................................................... 21
4. Default displays Default display "Indoor environment" ................................................. 22
"DHW" default display ........................................................................... 22
"Energy cockpit" default display .......................................................... 22
■Checking the heat pump operating data ............................................. 23
■Calling up the energy balance ............................................................ 23
"Favourites" default display ................................................................. 23
"System overview" default display ...................................................... 24
5. Room heating/room cool-
ing
Selecting a heating/cooling circuit ......................................................... 25
Setting the room temperature for a heating/cooling circuit .................... 25
■Setting temperature levels for room heating/room cooling ................. 25
Switching room heating/room cooling on or off (operating program) ..... 25
Time program room heating/room cooling ............................................. 26
■Setting the time program .................................................................... 26
Setting the heating curve ....................................................................... 26
Temporarily adjusting the room temperature ......................................... 27
Index
Index
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■Switching on "Extend time phase once" .......................................... 27
■Switching off "Extend time phase once" .......................................... 27
Adjusting the room temperature for longer periods at home ................. 28
■Switching on "Holidays at home" ................................................ 28
■Switching off "Holidays at home" ................................................ 28
Saving energy during long periods of absence ..................................... 28
■Switching on the "Holiday program" ........................................... 29
■Switching off the "Holiday program" ........................................... 29
6. DHW heating DHW temperature .................................................................................. 30
Switching DHW heating on/off (operating program) .............................. 30
Time program for DHW heating ............................................................. 30
■Setting a time program ....................................................................... 30
■Setting the time program for the DHW circulation pump .................... 30
"One-off DHW heating" outside the time program .............................. 31
■Switching on "One-off DHW heating" ............................................... 31
■Switching off "One-off DHW heating" ............................................... 31
Increased DHW hygiene ........................................................................ 31
■Switching on increased DHW hygiene ............................................... 31
■Switching off increased DHW hygiene ................................................ 32
Switching DHW scald protection on/off .................................................. 32
7. Advanced Quieter operation ................................................................................... 33
■Setting the time program for quieter operation ................................... 33
■Operating status for quieter operation ................................................ 33
Switching emergency mode on/off ......................................................... 33
8. Further adjustments Disabling operation ................................................................................ 34
■Unlocking the controls ........................................................................ 34
■Changing the password for the "Lock panel" function ........................ 34
Setting the display brightness ................................................................ 34
Switching the Lightguide on and off ....................................................... 35
Adjusting the signal tone for on-screen buttons .................................... 35
Naming heating/cooling circuits ............................................................. 35
Setting the "Time" and "Date" .............................................................. 36
Automatic "Summer/wintertime" changeover ..................................... 36
Setting the "Language" ........................................................................ 36
Setting "Units" ...................................................................................... 36
Entering the contractor's contact details ................................................ 36
Setting the home screen ........................................................................ 37
Switching internet access on or off ........................................................ 37
■Switching WiFi on/off .......................................................................... 37
■Establishing a WiFi connection ........................................................... 37
■Static IP addressing ............................................................................ 38
Switching off the display screen for cleaning ......................................... 38
Restoring factory settings ...................................................................... 38
9. Checks Calling up help messages ...................................................................... 40
Checking information ............................................................................. 40
Calling up licence information for the programming unit ........................ 40
Calling up licence information for the integral communication module
TCU201 ................................................................................................. 40
■Calling up the license information for third party components ............ 41
■Third party software ............................................................................ 41
Calling up licence information for the integral communication module
TCU300 ................................................................................................. 42
■Calling up the heat pump IP address ................................................. 42
Screed drying ......................................................................................... 42
Checking service messages .................................................................. 42
■Calling up a service message ............................................................. 43
Index
Index
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Checking fault messages ....................................................................... 43
■Calling up a fault message ................................................................. 43
Checking message lists ......................................................................... 44
10. Switching on and off Shutting down the heat pump ................................................................ 45
■With frost protection ............................................................................ 45
■Without frost protection monitoring (shutting down the system) ......... 45
Starting the heat pump .......................................................................... 45
Position of the ON/OFF switch .............................................................. 45
■Wall mounted indoor unit .................................................................... 45
■Floorstanding indoor unit with integral DHW cylinder ......................... 46
11. What to do if... Rooms are too cold ................................................................................ 48
Rooms are too hot ................................................................................. 48
There is no hot water ............................................................................. 49
The DHW is too hot ............................................................................... 49
"Warning" is displayed ......................................................................... 49
"Fault" is displayed ............................................................................... 49
"External hook-up" is displayed .......................................................... 49
ë and "Service" are displayed ............................................................ 50
"Panel locked" is displayed .................................................................. 50
12. Maintenance Cleaning ................................................................................................. 51
Inspection and maintenance .................................................................. 51
■DHW cylinder ...................................................................................... 51
■Safety valve (DHW cylinder) ............................................................... 51
■Potable water filter (if installed) .......................................................... 52
Damaged cables / lines ......................................................................... 52
13. Appendix Overview of "Main menu" ..................................................................... 53
Information on disposal .......................................................................... 56
■Disposal of packaging ........................................................................ 56
■Final decommissioning and disposal of the heating system ............... 56
14. Keyword index ................................................................................................................ 57
Index
Index (cont.)
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Your outdoor unit contains easily flammable refrigerant
in safety group A3 according to ISO 817 and ANSI/
ASHRAE Standard 34.
Therefore a safety zone is defined in the immediate
vicinity of the outdoor unit, in which special require-
ments apply.
Note
The requirements for the safety zone must be com-
plied with completely.
The following conditions must not be present or occur
within the safety zone:
■Building openings, e.g. windows, doors, light wells,
flat roof windows, etc.
■Outdoor air and exhaust air apertures from ventila-
tion and air conditioning systems
■Property boundaries, neighbouring properties, foot-
paths and driveways
■Pump shafts, inlets to waste water systems, down-
pipes and waste water shafts, etc.
■Other slopes, troughs, depressions, shafts
■Electrical house supply connections
■Electrical systems, sockets, lamps, light switches
■Snowfall from roofs
Do not introduce ignition sources into the safety zone:
■Naked flames or burner gauze assemblies
■Grills
■Tools that generate sparks
■Electrical devices not free of ignition sources, mobile
devices with integrated batteries (e.g. mobile
phones, fitness watches, etc.)
■Objects with temperatures above 360 °C
Note
The particular safety zone is dependent on the sur-
roundings of the outdoor unit.
■The safety zones below are shown with floorstanding
installation. These safety zones also apply to other
types of installation.
■In the case of wall installation, the requirements lis-
ted above also apply to the area below the outdoor
unit, down to the ground.
Freestanding positioning of the outdoor unit
1000
A
Fig. 1
ASafety zone
Siting the outdoor unit in front of an external wall
2144
3144
3144
1000
250
A
A
Fig. 2
ASafety zone
Corner positioning of the outdoor unit, right
2394
2894
250
A
A
1000
1800 500
750
Fig. 3
ASafety zone
Safety and liability
Safety zone
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Corner positioning of the outdoor unit, left
A
250
1000
A
500
5001800
2144
2644
Fig. 4
ASafety zone
Liability
No liability is accepted for loss of profit, unattained
savings, or other direct or indirect consequential losses
resulting from use of the WiFi interface integrated into
the system or the corresponding internet services. No
liability is accepted for losses resulting from inappropri-
ate use.
Liability is limited to typical damage arising if a funda-
mental contractual obligation is violated through slight
negligence, the fulfilment of which is essential for
proper execution of the contract.
The limitation of liability shall not apply if the damage
was caused deliberately or through gross negligence,
or if mandatory liability applies due to product liability
legislation.
The Viessmann General Terms and Conditions apply,
which are included in each current Viessmann pricelist.
The relevant data protection regulations and terms of
use apply to the use of Viessmann apps. Viessmann
accepts no liability for push notifications and email
services, which are provided by network operators.
The terms and conditions of the respective network
operators therefore apply.
Safety and liability
Safety zone (cont.)
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Symbols in these instructions
Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
Symbols on the heat pump
Symbol Meaning
Warning of flammable materials
(ISO 7010 - W021)
Observe the operating manual
(ISO 7000 - 0790)
Observe the instructions for use/operating
instructions (ISO 7000 - 1641)
Service indicator:
Refer to the operating manual
(ISO 7000 - 1659)
Intended use
The appliance is only intended to be installed and
operated in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions.
Depending on the version, the appliance can only be
used for the following purposes:
■Central heating
■Central cooling
■DHW heating
The range of functions can be extended with additional
components and accessories.
Intended use presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than central heating/cooling or DHW heating shall be
deemed inappropriate.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and will result in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended function.
Introductory information
Symbols
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Note
The appliance is intended exclusively for domestic or
semi-domestic use, i.e. even users who have not had
any instruction are able to operate the appliance
safely.
Product information
Your air source heat pump consists of an indoor unit
and an outdoor unit.
The indoor unit, including the heat pump control unit, is
inside the building and transfers the heat to the heating
system.
The outdoor unit is installed outside the building or fit-
ted to the outside of the building. Heat is obtained from
the ambient air in the outdoor unit.
To achieve this, a fan draws the ambient air through a
heat exchanger (evaporator). In the evaporator, the
thermal energy from this ambient air is transferred to
the refrigerant circuit. Here, the temperatures neces-
sary for room heating and DHW heating are gener-
ated.
To provide room cooling, the refrigerant circuit oper-
ates in reverse mode. Heat is extracted from your
rooms and transferred to the ambient air via the evap-
orator.
The refrigerant circuit is driven by the compressor.
Compared with the heat energy derived from the air,
the compressor only requires a small amount of electri-
cal power. This power is often provided at a favourable
tariff by your power supply utility.
Dependent upon the tariff conditions and the power
supply, your power supply utility may make short-term
interruptions to the heat pump power supply (power-
OFF), e.g. if there is high network load.
During power-OFF, the instantaneous heating water
heater built into the indoor unit can take over the heat
supply to the building. This instantaneous heating
water heater is then automatically switched on if the
heating output of the heat pump is insufficient or there
is a fault in the heat pump.
Type plate
A
Fig. 5
AType plate and QR code for appliance registration
The QR code with designation "i" contains the
access data for the registration and product informa-
tion portal. This allows e.g. the 16-digit serial number
to be read out via the QR-Code.
Heat pump control unit
The heat pump control unit is integrated into the indoor
unit and controls all functions of your system. The con-
trol unit is operated via a 7 inch touchscreen.
Communication modules for the following functions are
integrated into the heat pump control unit:
■Connection to a WiFi router, e.g. for remote control
via the internet with an app.
■Direct WiFi connection to a mobile device ("access
point")
■Data transmission via mobile phone network
■Connection of wireless accessories, e.g. remote con-
trol
Introductory information
Intended use (cont.)
6171827

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Permissible ambient temperatures in the installation room
!Please note
The appliance may develop faults if it is oper-
ated outside the specified temperature ranges.
Ensure that the specified temperature range is
maintained in the installation room.
To prevent malfunctions, ensure the ambient tempera-
ture is between 0 °C and +35 °C.
Outside temperature limits
Air/water heat pumps utilise outdoor air as the heat
source. Operation is only efficient within specified out-
door temperature limits:
■Room heating
-20 to 40 °C
■Room cooling
10 to 45 °C
If the temperature rises above the upper limit or falls
below the lower limit, the outdoor unit is shut down.
You will see a message about this on the heat pump
control unit.
To cover the heat demand for room heating and DHW
heating even outside the specified temperature range,
the heat pump control unit switches on the instantane-
ous heating water heater automatically.
Once the outside temperature is back within the tem-
perature limits, the heat pump is automatically ready
for operation again.
Safety zone
Your outdoor unit contains easily flammable refrigerant
in safety group A3 according to ISO 817 and ANSI/
ASHRAE Standard 34.
A safety zone is defined in the immediate vicinity of the
outdoor unit, in which special requirements apply: See
page 9.
Service link
The service link provides digital, internet based sup-
port, in which automatically selected information is
transmitted to the Viessmann service control centre,
e.g. system operating data or fault reports. Data pro-
tection information can be found under "viess-
mann.com/servicelink".
With the service link, data transfer is guaranteed for a
period of 5 years from installation of the system. The
right to subsequent use of the service link remains
reserved.
Low power radio
Low power radio is a wireless connection for data
transfer, e.g. via a remote control unit.
Your heating contractor can connect your heat genera-
tor with Viessmann accessories via low power radio.
Licence information
This product contains third party software including
software of "third party components". You are author-
ised to use this third party software subject to compli-
ance with the relevant licensing terms.
■Licence information for the programming unit: See
page 40.
■Licence information for the integral communication
module TCU201: See page 40.
■Licence information for the integral communication
module TCU300: See page 42.
Introductory information
Product information (cont.)
6171827

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The commissioning and matching up of the heat pump
control unit to local conditions and to the structural
characteristics of the building, plus the instruction of
the user in operating the system, must be carried out
by your heating contractor.
Note
These operating instructions also describe functions
that are only available on some heat pump models or
only with accessories. These functions are not specifi-
cally identified.
For questions relating to the scope of and accessories
for your heat pump and your heating system, contact
your contractor.
Your system is preset at the factory
Your heat pump is preset at the factory and is therefore
ready for operation:
Room heating/room cooling
■Your home will be heated to 20 °C from 06:00 to
22:00 h "Room set temperature" (standard room
temperature).
■If a separate buffer cylinder is installed, this buffer
cylinder will be heated.
DHW heating
■DHW is heated to "Set DHW temperature" 50 °C
every day from 05:30 to 22:00.
■Any installed DHW circulation pump is switched off.
■If required, the instantaneous heating water heater
built into the indoor unit can be switched to DHW
heating.
Frost protection
■Frost protection is ensured for your heat pump, DHW
cylinder and any separate buffer cylinder that may be
installed.
Note
For outside temperatures below -20 °C and in the
case of a fault in the heat pump, only instantaneous
heating water heater built into the indoor unit is
switched on to provide frost protection for the sys-
tem.
Wintertime/summertime changeover
■This changeover is automatic.
Date and time
■The date and time were set by your contractor.
You can change the settings at any time to suit your
individual requirements.
Power failure
All settings are retained if there is a power failure.
Energy saving tips
Saving energy when using room heating
■Do not overheat your home. Every degree of room
temperature reduction saves up to 6 % on your heat-
ing bills.
Do not set your standard room temperature ("Room
set temperature") to above 20 °C: See page 25.
■Heat your home to the reduced room temperature at
night or during regular absences (not applicable to
underfloor heating). For this, adjust the settings in
the time program for room heating ("Time pro-
gram"): See page 26.
■Adjust the heating curves so that your home is
heated with your individual preferred temperature all
year round: See page 26.
■To switch off functions that are not required (e.g.
room heating in summer), set the operating program
to "Standby mode" for the relevant heating circuits:
See page 25.
■If you are going away, set the "Holiday program":
See page 29.
During the period that you are away, the room tem-
perature will be reduced and DHW heating switched
off.
Introductory information
Commissioning
6171827

15
Saving energy on DHW heating
■At night or during regular absences, heat the DHW to
a lower temperature. To do so, adjust the time pro-
gram for DHW heating: See page 30.
■Switch on DHW circulation only for those times in
which you regularly use hot water. For this, adjust
the time program for the DHW circulation pump: See
page 30.
Utilising excess power (Smart Grid)
Utilise free or cheap excess power from the power
supply utility for your heating system.
To use this function, please contact your heating con-
tractor.
Tips for greater comfort
More comfort in your home
■Set your individual preferred temperature: See
page 25.
■Adjust the time program for your heating/cooling cir-
cuits so that your individual preferred temperature is
automatically reached when you are present: See
page 26.
■Adjust the heating curve so that your home is heated
with your individual preferred temperature all year
round: See page 26.
■If you need a longer heating/cooling phase in the
short term, select the "Extend time phase once"
function: See page 27.
Example:
Late in the evening, the reduced room temperature is
set by the time program. Your guests stay longer.
■If you are spending more time than usual in your
home, select the "Holidays at home" function:
See page
Example:
You are on holiday at home all day or your children
have school holidays.
Sufficient DHW heating for your needs
■Adjust the time program for DHW heating so that
there is always sufficient hot water in accordance
with your habitual routines: See page 30.
Example:
You need more DHW in the morning than in the day-
time.
■Adjust the time program for the DHW circulation
pump so that DHW is available immediately from the
taps during periods when hot water is drawn more
frequently: See page 30.
■If you need your DHW temperature to be higher for a
short while, select "One-off DHW heating outside the
time program": See page 31.
Quieter operation
Reduce the noise level of your air source heat pump,
at night for instance.
To do so, adjust the time program for quieter operation:
See page 33.
Introductory information
Energy saving tips (cont.)
6171827

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Touchscreen
You can adjust any setting on your system centrally at
the programming unit.
The programming unit is equipped with a touch dis-
play. To input settings and check information, tap the
on-screen buttons.
Status display with Lightguide
Dependent upon the heat generator, during operation
at the lower or upper edge of the programming unit, a
Lightguide is displayed.
Meaning of the display:
■Lightguide pulsates slowly:
Display is in standby mode.
■Lightguide is illuminated constantly:
You are operating the control unit. Every input opera-
tion is confirmed by a brief flashing of the Lightguide.
■Lightguide flashes quickly:
There is a fault in the system.
Note
You can switch off the Lightguide. See page 35.
Screen displays
Standby display
If the controls have not been operated for some time,
the display initially switches to the standby display.
After a few minutes, the illumination is switched off.
Default displays
The default displays provide access to the most impor-
tant settings and checks.
You can choose between the following default displays
using :
■Indoor environment
■DHW
■Energy cockpit
■Favourites
■System overview
For further information on the default displays: See
page 22 onwards.
Home screen
After switching on the control unit, the home screen is
shown.
In the delivered condition, the "Indoor environment"
default display is shown as the home screen. You can
specify a different default display for the home screen:
See page 37.
Call up the home screen as follows:
■Standby display active:
Tap anywhere on the screen.
■From the "Main menu":
Tap .
Note
You can prevent operation of the home screen: See
page 34.
If you do so, you will not be able to make adjustments
on either the home screen or the main menu.
"Panel locked" is displayed.
Operation
Operating principles
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Fig. 6
AMenu bar
BFunction area
CNavigation area
Buttons and symbols in menu bar A
Calls up the "Main menu".
"Heating circuit ..." Selects the heating/cooling cir-
cuit.
Note
This choice is only available if
there are several heating/cooling
circuits in your system.
System data:
■Date
■Time
Interfaces:
No data transfer
No WiFi connection
Establishing a connection
Communication error
WiFi connection is enabled: Very low reception
quality
WiFi connection is enabled: Low reception qual-
ity
WiFi connection is enabled: Medium reception
quality
WiFi connection is enabled: High reception qual-
ity
Buttons and symbols in function area B
For buttons on the default displays: See page 22
onwards.
Note
These symbols are not always displayed, but appear
subject to the system version and the operating status.
Symbols
Frost protection is active.
Setting/changing a time program
Extend time phase once.
Room heating with reduced room temperature
Room heating with standard room temperature
Room heating with comfort room temperature
Room cooling with standard room temperature
Room cooling with comfort room temperature
Holiday program is switched on.
Holidays at home is switched on.
Room cooling is active.
Room heating is active.
Operating program for room heating, room cooling,
DHW heating: See page 19.
Standby mode for each of the heating/cooling cir-
cuits
Heating
Cooling
DHW heating
Reports: See page 44.
■"Status"
■"Warnings"
■"Information"
■"Faults"
■"Service messages"
Operation
Buttons and symbols
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Buttons and symbols in navigation area C
Takes you back to the home screen.
Takes you one step back in the menu.
Or
Terminates an adjustment in progress.
WiFi is switched off: See page 37.
Confirms a change.
Makes changes in the menu.
Calls up the help text.
Calls up messages.
Calls up the required period for the energy bal-
ance.
For further information: See page 23.
Scrolls through the menu.
Or
Switches to other display areas, e.g. to the "Sys-
tem overview".
Note
If "DEMO" is displayed in the navigation area, there is
no room heating, no DHW heating and no frost protec-
tion.
Overview of the "Main menu"
In the "Main menu", you can check and adjust all of
the settings for the control unit's range of functions.
Call up the "Main menu" as follows:
■If the screensaver is active:
Tap anywhere on the screen and then tap .
■From the home screen:
Tap .
■From anywhere in the menu:
Tap and then .
Menus available in the "Main menu"
"Switch on/off"
Switch the heat pump off and on: See page 45.
"Indoor environment"
For more room heating/room cooling settings, e.g.
set temperature values
For further information: See page 25.
"DHW"
For DHW heating settings, e.g. "DHW tempera-
ture set value"
For further information: See page 30.
"Settings"
For example the display setting
For further information: See page 34.
"Information"
For checking operating data
For further information: See page 40.
"Holiday program"
Energy saving function "Holiday program"
For further information: See page 28.
"Holidays at home"
"Holidays at home" function
For further information: See page 28.
"Message lists"
Calls up all pending messages
For further Information regarding reports: See
page 42 onwards.
"Service"
For contractors only
"Advanced"
For the processing of further settings from the
function range of the heat pump control unit, e.g.
emergency mode
For further information: See page 33.
You can find the menu overview on page 53.
Operation
Buttons and symbols (cont.)
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Operating programs for room heating, room cooling and DHW heating
The operating programs for room heating, room cool-
ing and DHW heating can be set separately.
Symbol Operating program Function
Room heating/room cooling
"Heating" The rooms of the selected heating/cooling circuit are heated in ac-
cordance with the specified room temperature or flow temperature
and the time program: See chapter "Room heating/room cooling".
"Cooling" The rooms of the selected heating/cooling circuit are cooled in ac-
cordance with the specified room temperature or flow temperature
and the time program: See chapter "Room heating/room cooling".
"Heating/cooling" The rooms of the heating/cooling circuit are heated/cooled as
specified for the room temperature and time program: See chapter
"Room heating/room cooling".
"Standby mode" ■No room heating/room cooling
■Frost protection for the heat generator is active.
DHW heating
"DHW" "ON" DHW is heated in accordance with the specified DHW temperature
and time program: See chapter "DHW heating".
"DHW" "OFF" ■No DHW heating
■Frost protection for the DHW cylinder is active.
Special operating programs and functions
■"Screed drying"
This function is switched on by your contractor. Your
screed is dried in line with a set time program (tem-
perature/time profile) suitable for the relevant build-
ing materials. Your settings for room heating have no
effect on the duration of screed drying (max. 32
days). DHW heating is switched off. The "Screed
drying" function can be altered or switched off by
your contractor.
■"External hook-up"
The operating program set at the control unit was
changed over by an external device, e.g. an EM-EA1
extension (DIO electronics module). The operating
program cannot be changed via the control unit for
as long as the external hook-up is enabled.
■"Holiday program": See page 29.
■"Holidays at home": See page 28.
Note
The special operating programs and functions are dis-
played alternately with the room temperature or the
flow temperature of the heat pump.
In the main menu, you can call up the set operating
program under "Information": See page 40.
Procedure for setting a time program
The following explains how to input the settings for a
time program. The specifics of the individual time pro-
grams can be found in the relevant chapters.
You can set up a time program for the following func-
tions:
■Room heating/room cooling: See page 25.
■DHW heating: See page 30.
■DHW circulation pump: See page 30.
■Quieter operation: See page 33.
Operation
Operating program
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Time programs and time phases
In the time programs you determine what your heat
pump should do at what time. To do so, divide the day
into sections. These are called time phases. Inside
and outside these time phases. The system behaves
differently in accordance with the following table.
You can set up a time program for the following functions:
Function Within the time phase Outside the time phase
Room heating Your rooms are heated with standard room
temperature or comfort room temperature.
Your rooms are heated with reduced room
temperature.
Room cooling Your rooms are cooled with standard room
temperature or comfort room temperature.
The rooms are not cooled.
DHW heating DHW heating is switched on.
The water in the DHW cylinder is heated to
the set DHW temperature.
DHW heating is switched off.
DHW circulation
pump
The DHW circulation pump is switched on. The DHW circulation pump is switched off.
Quieter operation The speed of the fan and the compressor is
limited.
The maximum speed of the fan and the
compressor is enabled.
■The time programs can be set individually to be the
same, or different, for every day of the week.
■In the main menu, you can check the time programs
under "Information": See page onwards.
Setting time phases
The procedure is explained using the example of room
heating for heating/cooling circuit 1.
You can set up to 4 time phases in each "Time pro-
gram".
For each time phase, you define the start point "Start"
and the end point "End".
Example:
"Time program" for the weekday "Monday" for heat-
ing/cooling circuit 1
■Time phase 1:
06:45 to 12:00 with standard room temperature
■Time phase 2:
15:00 to 20:00 with comfort room temperature
In between these time phases the system heats to a
reduced temperature.
Tap the following buttons:
01. "Heating/cooling circuit 1" in the menu bar
02.
03. "Mo"
04.
05. for the "Start" and "End" of time phase 1.
The bar in the time diagram is adjusted.
06. "Normal" to select standard room temperature.
07. to add time phase 2.
08. for the "Start" and "End" of time phase 2.
Fig. 7
The bars in the time diagram are adjusted.
09. "Comfort" to select comfort room temperature.
10. to confirm
Operation
Procedure for setting a time program (cont.)
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