IVT HMC300 User manual

Operating Instructions
HMC300
6 720 808 471-00.1O
EMS plus
Control unit
6 720 813 192 (2014/10)

2
Contents
HMC300 – 6 720 813 192 (2014/10)
Contents
Key to symbols and safety instructions . . . . . . . . . . . . . . . .3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 General safety instructions . . . . . . . . . . . . . . . . . 3
2 Product data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Functionality of the control unit . . . . . . . . . . . . 4
2.3 Operation after power failure . . . . . . . . . . . . . . . 4
3 Overview of buttons and symbols . . . . . . . . . . . . . . . . 5
4 Quick manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Select heating circuit for initial menu . . . . . . . . . 9
4.2 Setting of operating mode . . . . . . . . . . . . . . . . . . 9
4.3 Change room temperature . . . . . . . . . . . . . . . . 10
4.4 Additional settings . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Favourite functions . . . . . . . . . . . . . . . . . . . . . . 12
5 Use the main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Overview of main menu . . . . . . . . . . . . . . . . . . . 14
5.2 Adjust settings for automatic operation of house
heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.3 Change settings for heating hot water . . . . . . . 19
5.4 Settings for heated pool . . . . . . . . . . . . . . . . . . 24
5.5 Settings for extra heat source
(additional heat) . . . . . . . . . . . . . . . . . . . . . . . . 24
5.6 Set holiday program . . . . . . . . . . . . . . . . . . . . . 25
5.7 Adjust settings for hybrid system . . . . . . . . . . . 28
5.8 General settings . . . . . . . . . . . . . . . . . . . . . . . . . 29
6 Get information on the system . . . . . . . . . . . . . . . . . . 29
7 Energy saving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Common questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9 Rectify operating fault . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1 Rectify “experienced” fault . . . . . . . . . . . . . . . . 37
9.2 Rectify shown operating fault . . . . . . . . . . . . . . 38
10 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . . 40

3
Key to symbols and safety instructions
HMC300 – 6 720 813 192 (2014/10)
1 Key to symbols and safety
instructions
1.1 Key to symbols
Warnings
The following keywords are defined and can be used in this
document:
•NOTICE indicates a situation that could result in damage to
property or equipment.
•CAUTION indicates a situation that could result in minor to
medium injury.
•WARNING indicates a situation that could result in severe
injury or death.
•DANGER indicates a situation that will result in severe
injury or death.
Important information
Additional symbols
1.2 General safety instructions
These instructions are intended for the user of the heating
system
▶ Read the instructions (for heat source, modules etc.)
before use and keep them handy.
▶ Pay attention to the safety and warning instructions.
Intended use
▶ The product should only be used to control heating systems
in one-family houses.
All other use is not suitable. We cannot accept liability for
damages resulting from unauthorised use.
Safety of electrical appliances for domestic use and similar
purposes
The following requirements apply in accordance with EN
60335-1 in order to prevent hazards from occurring when
using electrical appliances:
“This device can be used by children of 8 years and up as well
and by people with reduced physical, sensory or mental
capabilities or lacking in experience and knowledge, if they are
supervised and have been given instruction in the safe use of
the device and understand the resulting dangers. Children
must not play with the device. Cleaning and user maintenance
may not be performed by children without supervision”
“If the power supply cable is damaged, in order to avoid risks it
must be replaced by the manufacturer or its customer service
department or a similarly qualified person.”
Inspection and maintenance
Inspection and maintenance at regular intervals is essential for
safe and environmentally-friendly operation of the heating
system.
▶ Only allow authorised installers to work on the product.
▶ Rectify any confirmed faults immediately.
Damage caused by frost
If the system is not in operation it can freeze:
▶ Follow the instructions to ensure protection from freezing.
▶ Always keep the system switched on for additional
functions, such as heating hot water or protection from
blocking.
▶ Rectify operating faults immediately.
Risk of scalding at the hot water draw-off points
▶ If hot water temperatures above 60 °C are set or if thermal
disinfection is activated, a mixer must be installed. If in
doubt, ask your contractor.
Warnings in this document are identified by
a warning triangle printed against a grey
background.
Keywords at the start of a warning indicate
the type and seriousness of the ensuing risk
if measures to prevent the risk are not taken.
This symbol indicates important information
where there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the
document
• List entry
– List entry (second level)
Table 1

4
Product data
HMC300 – 6 720 813 192 (2014/10)
2 Product data
With the help of the HPC400 (Procontrol 600) control unit it is
easy to control the heat pump.
You select the required room temperature in your home by
turning the menu dial. The thermostat valves on the radiators
should normally be fully open, but can be adjusted if it gets too
cold or hot in one room.
The optimised operating mode ensures the efficient use of
energy. Heating and cooling are controlled to ensure optimum
comfort with the minimum possible consumption of energy.
The heating of hot water can easily be set, and then requires
few adjustments.
2.1 Functions
The number of functions and the menu structure on the control
unit depend upon how the system is built up.
• Settings for different heating and cooling circuits are only
accessible if two or more heating/cooling circuits are
installed.
• Information on the solar heating system is only shown if a
solar heating system is installed.
There are references to indicate that functions are related to
the structure of the system where this is relevant. The range of
settings and default settings vary, depending on which system
has been installed and can deviate from the information in
these operating instructions.
Consult your installer if you have any additional questions.
2.2 Functionality of the control unit
Cooling is disabled in the UK model to
comply with the regulations for RHI.
The control unit can control up to four heating/cooling circuits.
In heating mode the control unit works with one of the main
control modes in each heating circuit. Depending on your
requirements, the installer selects one of these and sets it.
The main control modes for heating are:
•Outdoor temperature controlled:
– Control of room temperature in relation to outdoor
temperature
– The control unit adjusts the flow temperature
according to a simplified or optimised heat curve.
•Outdoor temperature controlled with input from room
temperature:
– Control of room temperature on the basis of outdoor
temperature and measured room temperature. The
room unit actuates the flow temperature on the basis of
the measured and required room temperature.
– The control unit adjusts the flow temperature
according to a simplified or optimised heat curve.
2.3 Operation after power failure
In the event of a power failure, or periods with disconnected
heat source, no settings are lost. The control unit starts again
when the power returns. It may be necessary to redo the
settings for the time and date. No other settings are necessary.
For outdoor temperature controlled
adjustment with input from room temperature
the following applies:
The thermostat valves in the reference room
(the room where the room unit is installed)
must be fully open.

5
Overview of buttons and symbols
HMC300 – 6 720 813 192 (2014/10)
3 Overview of buttons and symbols
Fig. 1 Buttons
[1] Favourites button
[2] Extra hot water button
[3] Hot water button
[4] Menu button
[5] Info button
[6] Return button
[7] Menu dial
fav
info
menu
6 720 810 300-01.1O
5
6
7
4
2
3
1
If the display is off it goes on when a button is
used, and the respective function is carried
out. A short tap on the menu dial will only light
up the display. The display goes off
automatically if no buttons are used.

6
Overview of buttons and symbols
HMC300 – 6 720 813 192 (2014/10)
image 1, page 5
Pos. Button Designation Explanation
1Favourites
button
▶ Press this button to show favourite functions for heating circuit 1.
▶ Keep this button pressed to adjust the favourites menu (chapter 4.5, page 12).
2Extra hot water
button
▶ Press to activate or deactivate extra hot water (chapter 4.4, page 11).
3Hot water
button
▶ Press this button to open the menu Hot water (chapter 4.4, page 11).
4Menu button ▶ Press this button to open the main menu (chapter 5, page 13).
5Info button When a menu is shown:
▶ Press the button show more information on the selected menu option.
When the initial menu is open:
▶ Press the button to open the information menu (chapter 6, page 29).
6Return button ▶ Press this button to return to the main menu, or to delete the changed value.
When maintenance is due, or a fault has been confirmed:
▶ Press the button to switch between the initial menu and the fault message.
▶ Keep the button pressed to switch from a menu to the initial menu.
7Menu dial ▶ Turn the menu dial to change a set value (e.g. temperature) or to select a menu or
menu option.
When the display is off:
▶ Press the menu dial to switch on the display.
When the display is on:
▶ Press the menu dial to open a selected menu or a selected menu option, to confirm a
set value (e.g. temperature) or a message, or to close a popup window.
When the initial menu is open:
▶ Press the menu dial to activate the input box for selection of heating circuit in the
initial menu (only applies to systems with at least two heating circuits,
chapter 4.1, page 9).
Table 2 Buttons
fav
menu
info

7
Overview of buttons and symbols
HMC300 – 6 720 813 192 (2014/10)
Fig. 2 Example of what the initial menu looks like on a system with several heating circuits.
[1] Temperature
[2] Information line
[3] Outdoor temperature
[4] Information text
[5] Button lock
[6] Information graphics
[7] Operating mode
6 720 811 136-01.1O
6
1 3
7
2
4
5
image 2, page 7
Pos. Symbol Designation Explanation
1Temperature • Display of flow temperature or
• room temperature if a room unit for the heating circuit shown has been
installed.
2– Information line The week day and date are shown here.
3Display of other
temperature
An additional temperature, e.g. outdoor temperature, solar panel temperature or
temperature in the hot water system, is shown here (read more about this on
page 29).
4– Information text E.g. designation for the temperature being shown (image 2, [1]). If an
operating fault occurs a message will be shown here until the fault has been
rectified.
5Button lock The button lock is activated if the key is shown.
Table 3 Symbols in initial menu

8
Overview of buttons and symbols
HMC300 – 6 720 813 192 (2014/10)
6Information
graphics
Information symbols are shown here, which inform the user of which functions
are active in the system.
Hot water heating active
Thermal disinfection (hot water) active
Function for extra hot water active
Pool heating active
House heating active
Cooling active
Failure caused by power company
External input closed (Remote control)
Holiday function active
Time program – program 1 or 2 for house heating active
Function for Smart Grid activated
Drying active
Additional electric heat active
Power guard active
External heat source (additional heat) active
Defrosting function active
Heat pump working
Solar circuit pump working
7 Optimised Operating mode
Program 1 The house heating follows the time program active in the respective heating
circuit. The house heating switches between heating mode and temperature
reduction mode at the set times.
Program 2
Heating mode in displayed heating circuit active
Temperature reduction mode in displayed heating circuit active
image 2, page 7
Pos. Symbol Designation Explanation
Table 3 Symbols in initial menu

9
Quick manual
HMC300 – 6 720 813 192 (2014/10)
4 Quick manual
On page 13 there is an overview of the structure of the main
menu and the individual menu option positions.
The following descriptions are based on the initial menu
(image 2, page 7).
4.1 Select heating circuit for initial menu
Information for one single heating circuit is always shown in the
initial menu. If two or more heating circuits are installed it is
possible to set which heating circuit the initial menu is to show
information on.
4.2 Setting of operating mode
Cooling is disabled in the UK model to
comply with the regulations for RHI. Explanation of concepts“operating mode”, “automatic mode”
and“optimised operation” are on page 40 and 41. Optimised
operation is active with the default settings, because this mode
ensures the most efficient operation of the heat pump.
Use Result
▶ If the display is on, press the menu dial.
The selected heating circuit number, operating mode and name are shown in the
bottom half of the display.
▶ Turn the menu dial to select a heating circuit.
It is only possible to select the heating circuits available in the system.
▶ Wait a few seconds or press the menu dial.
The initial menu shows the selected heating circuit.
Table 4 Quick manual – Heating circuit in initial menu
6 720 811 136-02.1O
Use Result
To activate automatic mode (and apply the time program)
▶ Press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling.
▶ Press the menu dial to open the menu Operating mode .
▶ If two or more heating circuits are installed: turn the menu dial to mark Heating
circuit 1, 2, 3or 4and press the menu dial.
▶ Turn the menu dial to mark Auto and press the menu dial.
▶ Return to the initial menu by pressing and holding the return button.
All temperatures in the relevant time program for house heating are shown in the
bottom half of the display, in a popup window. The actual temperature flashes.
The control unit adjusts the room temperature according to the active time program
for house heating.
To return to optimised operation (without time program)
▶ Press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling .
▶ Press the menu dial to open the menu Operating mode .
▶ If two or more heating circuits are installed: turn the menu dial to mark Heating
circuit 1 , 2, 3or 4and press the menu dial.
▶ Turn the menu dial to mark Optimised and press the menu dial.
▶ Return to the initial menu by pressing and holding the return button.
The required room temperature is shown in the bottom of the display, in a popup
window. The control unit adjusts the permanent room temperature to the required
room temperature.
Table 5 Quick guide – Activate operating mode
6 720 811 136-03.1O
6 720 811 136-04.1O

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Quick manual
HMC300 – 6 720 813 192 (2014/10)
4.3 Change room temperature
Use Result
If you are cold or think that it will be too hot: change the room temperature temporarily
Automatic mode
Change room temperature to next break point
▶ Turn the menu dial to set the required room temperature.
The period in question is shown in grey in the time program bar chart.
▶ Wait a few seconds or press the menu dial.
The control unit works with the new setting. The change applies to the next break
point in the time program for house heating. After this the settings in the time
program apply again.
Undo temperature change
▶ Turn the menu dial until the time period is shown in black in the time program bar
chart, and then press the menu dial.
The change has been cancelled.
If you are always cold or think it is too hot: set the required room temperature (e.g. for heating and temperature reduction
mode)
Optimised operation
▶ Activate optimised operation (chapter 4.2).
▶ Wait a few seconds or press the menu dial to close the popup window.
▶ Turn the menu dial to set the required room temperature.
▶ Wait a few seconds or press the menu dial. Confirm the change in the popup
window by pressing the menu dial (or cancel the change by pressing the return
button).
The actual room temperature is shown in the bottom half of the display, in a
popup window.
The control unit works with the new settings.
Automatic mode
▶ Press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling .
▶ Turn the menu dial to mark the menu Temperature settings.
▶ Press the menu dial to open the menu.
▶ If two or more heating circuits are installed: turn the menu dial to mark Heating
circuit 1 , 2, 3or 4and press the menu dial.
▶ Turn the menu dial to mark Heating, Setback, Increase or Cooling.
▶ Press the menu dial.
▶ Turn the menu dial and press to activate the required setting e.g. for
temperature reduction mode.
When the temperature adjustment is activated:
▶ turn the menu dial and press it to set the temperature. The limit for the values set
for temperature depend on the settings for the other operating mode.
The control unit works with the new settings. The settings apply for all time
programs for house heating (when two or more heating ciruits are set they only
apply to the selected heating circuit).
Table 6 Quick guide – Room temperature
6 720 811 136-05.1O
6 720 811 136-06.1O
6 720 811 136-07.1O
6 720 811 136-08.1O

11
Quick manual
HMC300 – 6 720 813 192 (2014/10)
4.4 Additional settings
Use Result
If the demand for hot water is temporarily higher than usual: activate extra hot water (= quick function for hot water).
▶ Press the extra hot water button.
The heating of hot water is activated immediately with the set temperature and for the
set time. After a few seconds the symbol for extra hot water is shown in the
information graphics (settings for Extra hot water chapter 5.3.3, page 21).
To deactivate the function for extra hot water before the set time has gone:
▶ Press the button for extra hot water once again.
If the hot water is too cold or too hot: Change operating mode for heating hot water
▶ Press the hot water button.
The control unit shows the selection list for the operating mode for heating hot water
(more information chapter 5.3.1, page 20).
▶ Turn the menu dial to mark the required operating mode for a period.
▶ Press the menu dial.
The control unit works with the new settings. Your installer can set the temperatures
for the operating modes DHW and DHW reduced for you.
Set the date and time
If the power supply to the control unit is disconnected for a long time the user will be
automatically asked to enter the date and time. The control unit will then return to normal
mode.
▶ Activate the power supply
The control unit shows the date settings.
▶ Turn the menu dial and press it to set the day, month and year.
The text is marked on the display Continue.
▶ Press the menu dial.
▶ Set the time in the same way as the date.
The text is marked on the display Continue .
▶ Press the menu dial.
The control unit works with the new settings. No additional settings are needed to put
the control unit in operation again.
To avoid unintentionally changing the control unit settings:
activate or cancel the button lock (child lock, page 40)
▶ Press the hot water button and the menu dial and keep them pressed for a few
seconds to activate or cancel the button lock.
If the button lock is active a key is shown on the display (image 2 [5], page 7).
Table 7 Quick manual – Additional settings
6 720 811 136-09.1O
6 720 811 136-10.1O
6 720 811 136-11.1O
6 720 811 136-12.1O

12
Quick manual
HMC300 – 6 720 813 192 (2014/10)
4.5 Favourite functions
With the help of the favourites button you have direct access to
the functions you use most often with heating circuit 1. When
you press the favourites button the first time the menu for
configuration of the favourites menu opens. You can save your
personal favourites there, and if necessary adjust the
favourites menu to your requirements later on.
The function of the favourites button depends on which heating
circuit is shown in the initial menu. The settings changed in the
favourites menu always only apply for heating circuit 1.
To change the language for the texts shown in the display: set language
▶ Press the menu button to open the main menu.
▶ Turn the menu dial to mark Settings .
▶ Press the menu dial to open the menu Settings .
▶ Press the menu dial.
▶ Turn the menu dial to select a language.
▶ Press the menu dial.
The control unit works with the new settings.
If your daily rhythm changes (e.g. working shifts): adjust time program
In the menu Heating/Cooling > Time program the time program can in a few simple
steps be adjusted to your individual habits or circumstances (chapter 5.2.1,
page 15).
Use Result
Table 7 Quick manual – Additional settings
6 720 811 136-13.1O
6 720 811 136-14.1O
Use Result
To use a favourite function: open the favourites menu
▶ Press the favourites button to open the favourites menu.
▶ Turn and press the menu dial to select a favourite function.
▶ Change the settings (this is done in the same way as in the main menu).
To adjust the list of favourite functions to your requirements: adjust the favourites menu
▶ Press the favourites button and keep it pressed until the menu for configuration of the
favourites menu is shown.
▶ Turn and press the menu dial to select a function (Yes) or to cancel the selection
(No).
The changes take effect immediately.
▶ Press the return button to close the menu.
Table 8 Quick manual – Favourites functions
6 720 811 136-15.1O

13
Use the main menu
HMC300 – 6 720 813 192 (2014/10)
5 Use the main menu
Fig. 3 Menu structure of the main menu
Main menu
Heating/Cooling DHW priority
Operating Mode Switch on DHW priority
Temperature settings DHW priority for
Heating Prioritise heating for
Setback Circulation
Cooling Operating Mode
Time program Start frequency
Activate time program My DHW circltn time prog.
My time program 1 Pool
Reset prog. Activate pool heating
My time program 2 Pool temperature
Reset prog. Allow additional heat in pool mode
Rename heating circuit Unit
Rename time program Time program additional heat
Sum./wint. changeover Time program Activate additional heat
Heating/Cooling My time program
Heating mode off Reset time program
Cooling mode off Time program min. outdoor temp.
DHW priority Silent mode
Switch on DHW priority Silent mode
DHW priority for Min. outdoor temperature
Prioritise heating for Holiday
DHW Hybrid system
Operating Mode Energy:price ratio
Time program Settings
My DHW time program Language
Reset prog. Time format
Extra hot water Time
Start now Date format
Cancel Date
Temperature Autom. time changeover
Time Display contrast
Thermal disinfection Room temp. sen. adj.
Start Time correction
Start now Standard display
Cancel Internet password
Temperature
Day
Time
Max. period
6 720 811 136-101.1O

14
Use the main menu
HMC300 – 6 720 813 192 (2014/10)
5.1 Overview of main menu
If two or more heating/cooling circuits are installed in the
system it is necessary to make several selections in some
menus.
▶ Turn the menu dial to select which heating circuit the
settings are to apply to.
▶ Press the menu dial to show the menu.
Menu The purpose of the menu Page
Heating/Cooling Change mode, room temperatures and time program for house heating permanently. 15
Operating mode Change mode for house heating or time program, or optimised operation. 4
Temperature
settings
Set the required room temperatures allocated to the time program periods, e.g. with
heating and temperature reduction mode or cooling mode.
Time program Switch between heating and temperature reduction mode at fixed times and weekdays
(automatic mode). In this menu you can change the name of the heating circuits and time
programs.
15
Summer/winter
mode
Switching between summer mode (house heating switched off or active cooling) or winter
mode (house heating switched on).
19
DHW priority When alternative DHW modes are activated the control switches between heating
requirements from the house heating and hot water requirements.
22
DHW Change water temperatures and time program for heating hot water permanently. 19
Operating mode Select mode for heating hot water, e.g. according to time program or always active. 20
Time program Switch between modes for hot water, reduced heating of hot water and no heating of hot
water at fixed times and weekdays (automatic mode).
20
Extra hot water Change temperature and activation time for Extra hot water function. 21
Thermal
disinfection
Heat up the hot water to prevent bacteria. 21
DHW priority When alternating DHW modes are activated, the control switches between heating
requirements from the house heating and hot water requirements.
22
Pool Settings for operation of heated pool. 24
Unit Settings for operation of additional heat (electric/gas/oil/solid fuel). 24
Holiday Settings for operation of system during long absence (holiday program). 25
Hybrid system Set energy price ratio 28
Settings Change general settings, e.g. time, date, display contrast etc. 21
Table 9 Overview of main menu

15
Use the main menu
HMC300 – 6 720 813 192 (2014/10)
5.2 Adjust settings for automatic operation of
house heating
Cooling is disabled in the UK model to
comply with the regulations for RHI.
Menu: Heating/Cooling
Optimised operation normally produces the highest comfort
with the largest possible energy savings. A constant
temperature can be set in cooling mode.
Optimised operation for each heating circuit is active with the
default settings
Heating circuit 1 – 4
If several heating circuits are installed and configured, the
settings for heating circuits 1 – 4 are changed in the same way
as in systems with one heating circuit. The changes only apply
however to the selected heating circuit. If the heating circuits
are given names that are easy to distinguish, this considerably
simplifies the selection of the correct heating circuit.
5.2.1 Adjust Time program for automatic operation of
house heating
The time program for house heating is only active if automatic
mode is active (chapter 4.2, page 9).
This is how you can set the same break points for several
weekdays:
▶ Set break points for a group of several days, e.g.
Mon-Sun or Mon-Fri.
▶ Adjust the time program for the individually deviating
weekdays during Monday – Sunday (detailed description
table 12, page 16).
Menu: Time program
The time programs automatically switch from one mode to
another at fixed times. The control unit has two time programs
for each heating circuit. You can program two break points per
day, with their own operating mode. The default settings for the
time programs result in reduced heating during the night.
Operation without a time program results in the highest
possible energy saving.
If the settings, temperatures or time program break points do
not match your requirements you can adjust the time program.
Talk to your installer if you do not want to heat the house during
the night. He can also set the temperature reduction mode.
The following table shows how to activate and select a time
program for house heating.
Menu options Description
Activate time
program
When automatic mode is activated the
control unit applies this selected time
program (My time program 1 or My time
program 2).
My time
program 1
6 break points can be set for each day or
each group of days. Each break point can
be allocated one of the two modes in
automatic mode. The shortest possible
period between two break points is
15 minutes.
Reset prog. Here My time program 1 can be reset to
the default settings.
My time
program 2
My time program 1
Reset prog. Here My time program 2 can be reset to
the default settings.
Rename heating
circuit
The name of the selected heating circuit
can be adjusted here (this function is only
available if more than one heating circuit
is installed). This simplifies the selection
of the correct heating circuit, e.g.“floor
heating” or“loft”. The names are preset
with Heating circuit 1 – 4(table 13,
page 18).
Rename time
program
It is possible to change the name of the
time programs in the same way as the
heat circuits. It simplifies the selection of
the correct time program to give the
programs names like“family”or“night
shift”.
Table 10 Settings of time program for house heating

16
Use the main menu
HMC300 – 6 720 813 192 (2014/10)
The following table shows how to adjust a time program for house heating.
Use Result
Select active time program for house heating
▶ When the initial menu is active, press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling .
▶ Turn the menu dial to mark Time program .
▶ Press the menu dial to open the menu Time program .
The text is marked on the display Activate time program . Depending on the
installed system, you may need to select a heating circuit.
▶ Press the menu dial.
▶ Turn the menu dial to mark My time program 1 or 2and press the menu dial.
The control unit works in automatic mode with the selected time program (when two
or more heating circuits are installed the setting only applies on the selected heating
circuit).
Table 11 Activate and select time program for house heating
Use Result
Open the menu to adjust a time program for house heating
▶ When the initial menu is active, press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling .
▶ Turn the menu dial to mark Time program .
▶ Press the menu dial to open the menu Time program .
▶ Turn the menu dial to mark My time program 1 or 2.
Depending on the installed system, you may need to select a heating circuit.
▶ Press the menu dial.
▶ Press the menu dial again to activate the input box for weekday or group of days.
▶ Turn the menu dial to select a weekday or a group of days and press the menu dial.
Changes in this menu only apply to the selected weekday or group of days.
Change break point
▶ Open the menu to adjust a time program for house heating.
▶ Turn the menu dial to mark a break point.
▶ Press the menu dial to activate the input box for the break point.
▶ Turn the menu dial to change the break point.
The new time period is shown in grey in the time program bar chart.
▶ Press the menu dial.
The control unit works with the new settings.
Table 12 Adjust time program for house heating or individual requirements
6 720 811 136-16.1O
6 720 811 136-17.1O
6 720 811 136-18.1O
6 720 811 136-19.1O
6 720 811 136-20.1O

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HMC300 – 6 720 813 192 (2014/10)
The following table shows how to change the name of the heating circuits.
Set the temperature for a period
▶ Open the menu to adjust a time program for house heating (page 16).
▶ Turn the menu dial to mark the operating mode for a period.
▶ Press the menu dial to activate the input box for the operating mode.
▶ Turn the menu dial to select a mode (heating or temperature reduction).
The new time period is shown in grey in the time program bar chart.
▶ Press the menu dial.
The control unit works with the new settings.
Copy a time program (e.g. copy the time program for Thursday to Monday and Tuesday)
▶ Open the menu to adjust a time program for house heating (page 16) and select
the day to be copied, e.g. Thursday.
▶ Turn the menu dial to mark Copy .
▶ Press the menu dial.
A list is shown in the display where you can select to which days the time program is
to be copied.
▶ Turn and press the menu dial to select the weekdays, e.g. Monday and Tuesday.
▶ Turn the menu dial to mark Copy and press the menu dial.
▶ Which time program to copy is shown in a popup window.
▶ Press the menu dial to close the popup window.
The control unit works with the new settings.
Use Result
Table 12 Adjust time program for house heating or individual requirements
6 720 811 136-21.1O
6 720 811 136-22.1O
6 720 811 136-23.1O

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Use the main menu
HMC300 – 6 720 813 192 (2014/10)
Use Result
Open the menu to change the name of a heating circuit (or a time program)
▶ When the initial menu is active, press the menu button to open the main menu.
▶ Press the menu dial to open the menu Heating/Cooling .
▶ Turn the menu dial to mark Time program .
▶ Press the menu dial to open the menu Time program .
▶ Turn the menu dial to mark Rename heating circuit (only available when more than
one heating circuit is installed) or Rename time program.
▶ Press the menu dial.
The flashing cursor shows in which position the input starts. The names of the heating
circuits and time programs are saved with standard designations.
Select and enter the characters
▶ Turn the menu dial to move the cursor to the position where the character is to be
entered.
▶ Press the menu dial to activate the input box to the right of the cursor.
▶ Turn the menu dial to select a character.
▶ Press the menu dial to enter the character.
The selected character is entered. The input box for the next position in the text is
now active.
▶ Turn the menu dial and press it to enter additional characters.
▶ Press the return button to close the input.
The cursor flashes to the right of the entered characters. The control unit works with
the new settings.
Delete characters/delete the full name
▶ Turn the menu dial to place the cursor behind the letters to be deleted.
▶ Press the menu dial to activate the input box to the right of the cursor.
▶ Turn the menu dial until <C is shown.
▶ Press the menu dial to delete the character to the left of the active input box
(<C remains active).
▶ Press the menu dial again to delete additional characters, or press the return button
to exit.
The cursor flashes in the position where the character <C was last shown.
▶ Press the return button to exit the input and use the entered name.
Table 13 Change the name of the heating circuit
6 720 811 136-24.1O
6 720 811 136-25.1O
6 720 811 136-26.1O

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HMC300 – 6 720 813 192 (2014/10)
5.2.2 Setting of changeover temperature for summer/
winter mode
Heating hot water is not affected by summer/winter mode.
Menu: Summer/winter mode
5.3 Change settings for heating hot water
Menu: DHW
These settings are only available if a hot water system is
installed in the system. The water is then heated in a hot water
heater.
A time program has been set at the factory for heating hot
water. Alternatively the heating of hot water is managed
constantly (chapter 5.3.2, page 20).
NOTICE: System damage
▶ Do not switch over to summer mode if
there is a risk of frost.
Summer/winter changeover is only active if
Heating/Cooling > Automatic mode has
been set.
Menu
options Description
Heating/
Cooling
•Constant summer mode (= OFF): The
heat pump is not used for heating or
cooling.
•Automatic mode: Heating or cooling mode
is activated, depending on the outdoor
temperature. When the outdoor
temperature lies between the two limiting
values the system only provides hot water.
•Continuous heating: Cooling mode is not
activated, and the system does not run on
idle.
• Continuous cooling : Heating mode is not
activated, and the system does not run on
idle.
Heating
mode off1)
1) Only available when the outdoor temperature controlled
summer/winter mode is active in respective heating circuit.
When the damped outdoor temperature2)
exceeds the changeover temperature set here,
the house heating is switched off.
If the damped outdoor temperature falls below
the changeover temperature by 1 °C, the house
heating is switched on. In systems with several
heating circuits this setting applies for the
selected heating circuit.
2) Damped outdoor temperature involves a delayed effect of
the measured outdoor temperature to equalise
temperature variations.
Cooling
mode off1)
If the outdoor temperature exceeds this set
temperature, the cooling mode starts.
Table 14 Settings for summer/winter mode
WARNING: Scalding risk!
If the temperature for extra hot water is set
higher than 60 °C or if thermal disinfection has
been activated to prevent legionnaires'
disease, the hot water is heated once to over
65 °C. The default setting for the hot water
temperature is 60 °C. With higher settings
there is a risk of scalding from hot water taps.
▶ Make sure a mixer is installed. Ask your
installer if you are unsure how to do this.

20
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HMC300 – 6 720 813 192 (2014/10)
5.3.1 Set operating mode for heating hot water
By default the heating of hot water follows a separate time
program.
• If Own time program is set, the operating mode DHW is
active from 05:00 (Saturdays and Sundays: from 07:00)
to 23:00 (default time program).
Menu: Operating mode
5.3.2 Set time program for heating hot water
In this menu you can adjust the time program for heating of hot
water.
Menu: Time program
The following table shows to to adjust the settings for heating hot water.
Menu options Description
Operating
mode
• With Own time program a time program
can be set to heat hot water that works
independantly of the time program for
house heating.
• If Always on - DHW red. or Always on -
DHW is set the heating of hot water
works continuously.
• If it is deactivated there is no heating of
hot water.
Table 15 Operating mode for heating hot water
Menu options Description
My DHW time
program
6 break points can be set for each day
or each group of days. Each break point
can be allocated one of the up to three
modes in automatic mode. The shortest
possible period between two break
points is 15 minutes.
Reset prog. With this menu option the hot water
system can be reset to the default
settings.
Table 16 Settings in the time program for hot water
Use Result
Select and set time program for heating hot water
▶ When the initial menu is open: press the hot water button.
▶ Turn the menu dial to mark the menu option Own time program and press the menu
dial.
The time program for hot water is activated. The break points can be set individually
in the menu DHW > Time program > My DHW time program (according to the
instructions in chapter 5.2.1 from page 15). The hot water temperatures set for
respective modes apply during the periods.
Activate constant heating of hot water
▶ When the initial menu is open: press the hot water button.
▶ Turn the menu dial to mark Always on - DHW red. or Always on - DHW.
▶ Press the menu dial.
Heating of hot water takes place without interruption
Table 17 Adjust settings for heating hot water
6 720 811 136-27.1O
6 720 811 136-28.1O