Centrometal HPCU360iCM User manual

1
CONTROL UNIT
HPCU360iCM
FOR HEAT PUMPS
Technical manual for control unit
ISSUE: 1.2_EN
11-2020
* Devices are not included in the standard equipment of the control unit.
HPnet300CM*
HPxTouchCM*
HPx40CM*
HPx2kCM*

ELECTRIC DEVICE UNDER VOLTAGE!
Before any action related to the power supply (cables
connection, device installation etc.) check if the control unit is
not connected to the power mains!
Installation should be done by a person with appropriate
electrical qualifications. Improper cables connection could
result in the control unit damage.
The control unit can’t be used in steam condensation
conditions and can’t be exposed to water.

TABLE OF CONTENTS
1RECOMMENDATIONS REGARDING SAFETY ........ 4
2GENERAL INFORMATION .................................... 5
3INFORMATION ABOUT DOCUMENTATION......... 5
4STORAGE OF DOCUMENTATION......................... 5
5APPLIED SYMBOLS .............................................. 5
6DIRECTIVE WEEE 2012/19/UE............................. 5
USER SETTINGS ............................................ 7
7THE CONTROL UNIT DESCRIPTION...................... 8
7.1 THE CONTROL UNIT CONTROL ................................. 8
7.2 THE CONTROL UNIT OPERATION .............................. 8
7.3 PRESET TEMPERATURE SETTINGS ............................. 8
7.4 HEATING/COOLING CIRCUIT SETTINGS ...................... 9
7.5 DHW SETTINGS................................................... 9
7.6 TIME SCHEDULES ................................................. 9
7.7 OPERATING MODES SETTINGS................................. 9
7.8 USER SETTINGS.................................................. 10
7.9 COOPERATION WITH ROOM PANEL AND ROOM
THERMOSTAT ................................................................ 11
7.10 COOPERATION WITH THE INTERNET MODULE........... 11
INSTALLATION AND SERVICE SETTINGS....... 13
8HYDRAULIC SCHEMES ....................................... 14
9TECHNICAL DATA .............................................. 16
10 CONDITIONS OF STORAGE AND TRANSPORT ... 16
11 THE CONTROL UNIT INSTALLATION .................. 16
11.1 INSTALLATION REQUIREMENTS.............................. 16
11.2 INSTALLATION OF CONTROL PANEL......................... 16
11.3 INSTALLATION OF MODULE................................... 17
11.4 TEMPERATURE SENSORS INSTALLATION .................. 17
11.5 TEMPERATURE SENSORS CHECK............................. 18
11.6 CONNECTING PUMPS .......................................... 18
11.7 CONNECTING MIXER SERVO.................................. 18
11.8 OUTPUT TEST.................................................... 19
11.9 CONNECTION OF ROOM PANEL OR ROOM THERMOSTAT19
11.10 CONNECTING THE INTERNET MODULE .................... 19
11.11 WEATHER CONTROL SETTINGS .............................. 19
11.12 STABILIZATION OF ROOM TEMPERATURE................. 20
12 CONNECTING ELECTRICAL SYSTEM................... 20
12.1 CONNECTING THE WIRES ..................................... 22
12.2 ELECTRICAL SCHEME ........................................... 23
13 SERVICE MENU –STRUCTURE........................... 24
14 DESCRIPTION OF SERVICE PARAMETERS .......... 25
15 REPLACING COMPONENTS ............................... 28
15.1 MAINS FUSE REPLACEMENT.................................. 28
15.2 CONTROL PANEL REPLACEMENT ............................ 28
15.3 EXECUTIVE MODULE REPLACEMENT ....................... 28
16 FIRMWARE UPDATE.......................................... 28

4
1Recommendations regarding safety
Requirements concerning safety are listed in
particular sections of this instruction. Apart
from them it in necessary to fulfill the
following requirements.
•The control unit can be assembled
only by qualified installer and in
accordance with currently valid
standards and regulations.
•Prior to starting the assembly, repairs
or maintenance and during the
execution of any connection works, it
is necessary to switch off the mains
supply and make sure that no
terminals no electrical wires are under
voltage.
•After turning off the control unit
terminals of the control unit can be
under a dangerous level of voltage.
•The control unit can be utilized only in
accordance with its intended use.
•Additional automatics should be used
in order to protect central heating and
DHW system against the results of
control unit failure or software errors.
Particularly control automatics which
reduce DHW temperature in order to
protect users against burns.
•Values of programmed parameters
must be set in accordance with a
particular building and hydraulic
system.
•The control unit is not an intrinsically
safe device. It means that in case of
failure it can be a source of sparks or
high temperature which surrounded
by ashes or flammable gases can
cause fire or explosion.
•Modification of the programmed
parameters should be made only by a
person who read this manual.
•Use only in heat and cooling system
made in accordance with currently
valid regulations.
•Electrical system including the control
unit should be 3-wired and protected
with fuse selected in accordance with
used loads.
•The control unit cannot be used with
damaged housing.
•Never make any modifications in
control unit structure.
•The control unit consists of two
components: control panel and main
module. Replaced component must be
compatible.
•Keep children away from the control
unit.

5
2General information
The HPCU360iCM control unit is intended for
a heat pump control and for controlling of
space heating and cooling, and for domestic
hot water (DHW) preparation as well.
3Information about documentation
The control unit manual is divided into two
parts: for user and serviceman. Yet, both
parts contain important information,
significant for safety issues, hence the user
should read both parts of the manual.
Device producer is not responsible for any
damages caused by failure to observe these
instructions.
4Storage of documentation
This assembly and operation manual, as well
as any other applicable documentation,
should be stored diligently, so that it was
available at any time. In the case of removal
or sale of the device, the attached
documentation should be handed over to the
new user.
5Applied symbols
In this manual the following symbols are
used:
- useful information and tips,
- important information, failure to
observe these can cause damage of
property, threat for human and
household animal health and life.
Caution: the symbols indicate important
information, in order to make the manual
more lucid. Yet, this does not exempt the
user from the obligation to comply with
requirements which are not marked with
symbol.
6Directive WEEE 2012/19/UE
Purchased product is designed and made of
materials of highest quality. The product
meets the requirements of the Directive
2012/19/EU of 4 July 2012 on waste
electrical and electronic equipment
(WEEE), according to which it is marked by
the symbol of crossed-out wheeled bin (like
below), meaning that product is subjected to
separate collection.
Responsibilities after finishing a period of
using product:
•dispose of the packaging and product at
the end of their period of use in an
appropriate recycling facility,
•do not dispose of the product with other
unsorted waste,
•do not burn the product.
By adhering obligations of waste electrical
and electronic equipment controlled disposal
mentioned above, you avoid harmful.

6

USER SETTINGS
HPCU360iCM

8
7The control unit description
7.1 The control unit control
The control unit is operated using a touch
screen. Parameters are edited by touching
the selected symbol on the control panel
screen.
Main symbols meaning:
- information about heat pump and
buffer, and heating/cooling circuits settings;
- DHW tank settings;
- time schedules for heating/cooling
circuits and DHW tank;
- User settings menu and Service
settings menu;
- turning the control unit on and off.
Additional symbols meaning:
- currently selected screen and
available screens;
- set preset temperature value of
heating/cooling circuit and DHW tank;
- heating/cooling circuit pump operation;
- percentage opening of the
heating/cooling circuit mixer valve;
- list of active alarms;
- Silent mode.
7.2 The control unit operation
Heat pump
The control unit controls the operation of the
a heat pump according to demand for space
heating or cooling.
Domestic hot water
The control unit controls the operation of
DHW pump loading a DHW tank up to a user-
defined temperature. Preparation of DHW
can be programmed in time intervals. The
control unit also controls a DHW circulating
pump which enables quick transportation of
DHW to a bathroom or kitchen located far
away.
Heating/cooling circuit
The control unit controls the operation of one
direct heating/cooling circuit and two
adjustable heating/cooling circuits. Water
temperature in circuits is set by weather, i.e.
water temperature in the heating/cooling
circuit is calculated in accordance with a
temperature from the outdoor temperature
sensor. Due to this, despite of varying
outside temperature, a room temperature in
heated rooms is kept on a set level.
- Dependent heating/cooling circuits –the
one control panel can be a common room
thermostat for many circuits. For example,
room temperature readings on a control
panel installed in the living room affect
operation of both radiator and floor circuit.
- Independent heating/cooling circuit –there
is a possibility of connecting room panels or
room thermostats measuring room
temperature independently and affecting
assigned circuits. It is the way to obtain
independency of the circuits, e.g. in case
when one part of the building is used for the
whole year and the second part is used
periodically, e.g. for rent.
7.3 Preset temperature settings
The preset temperature of the
heating/cooling circuit and the domestic hot
water is set by pressing the screen with a
view of the heating/cooling circuit and the
DHW tank.

9
Tip: color change means if the
heating/cooling circuit is in heating (red) or
cooling (blue) mode.
7.4 Heating/cooling circuit settings
Pressing the symbol displays the
parameters:
•Circuit name - own name of the circuit,
e.g. "Living room".
•Hysteresis –the circuit will be charged to
the preset temperature. After the water
temperature in the circuit drops by the
value of Hysteresis, the heating/cooling
circuit will be switched on again. It is
recommended to set the hysteresis in the
range of 0.3...0.5 K.
•Preset comfort temperature - circuit
temperature for comfort mode.
•Preset economical temperature - circuit
temperature for economy mode.
7.5 DHW settings
Pressing the symbol displays the
parameter:
•DHW hysteresis –DHW tank will be
loaded up to the preset temperature.
When temperature of water inside the
DHW tank drops by DHW hysteresis
value, pump loading will be enabled and
the DHW tank will be loaded again.
DHW tank charging is only active
after connecting the DHW tank
temperature sensor.
7.6 Time schedules
The control unit includes a function of
programming time schedules. In the
situation when user is out of the home or at
night, the control unit can decrease the
amount of supplied heat energy what affects
fuel consumption. Time schedules are
defined separately for heating/cooling
circuits, DHW tank and circulation pump.
Time schedules can be set separately for
each day of the week.
The symbols meaning:
, - weekday selection and time period
selection. The 24-hour interval is set every
30 minutes.
- copying the currently set time period
to any day of the week.
- the preset room temperature is set to
the value Preset economical temperature for
heating/cooling circuits. The DHW tank and
circulation pump are switched off.
- the preset room temperature is set to
the value Preset comfort temperature for
heating/cooling circuits. The DHW tank is
loaded to the Preset DHW temperature. The
DHW circulation pump is turned on for
Circulation operation time and turned off for
Circulation pause time.
7.7 Operating modes settings
Main operating mode of the heating/cooling
circuit is selected by the symbol on the
screen.
The main operating modes:

10
- auto mode - automatically switches on
or off the heating or cooling mode,
depending on the outdoor (weather)
temperature. Automatic switch to Auto mode
is possible only with connected outdoor
temperature sensor and when its operation is
enabled.
- heating mode - the circuit performs
the heating function.
- cooling mode - the adjustable circuit
performs the cooling function. No cooling
mode in case of direct circuit. Possibility to
turn on cooling for mixers circuit. Cooling
mode available if a fan-coil unit is selected
for direct circuit.
Additional operating mode of the
heating/cooling circuit and the DHW tank,
which will suit the user's preferences, is
selected by the symbol and the
symbol on the screen in the place where the
preset temperature of the heating/cooling
circuit and the DHW tank is changed.
Operating mode can be selected separately
for each heating/cooling circuit and DHW
tank. In case when many heating/cooling
circuits are assigned to a mutual control
panel, operating mode change is global and
applies to all circuits simultaneously.
The operating modes:
- comfort mode –the preset room
temperature is constant and corresponds to
the entered Preset comfort temperature
value. DHW tank maintains constant preset
temperature.
- auto-comfort mode - the preset room
temperature is maintained at the same set
time periods as the Preset comfort
temperature. The heating/cooling circuit is
switched off outside the set time periods.
This mode cannot be selected for the DHW
tank.
- economy mode –the preset room
temperature is constant and corresponds to
the entered Preset economical temperature
value. This mode cannot be selected for the
DHW tank.
- auto-economic mode - the preset
room temperature is maintained at the set
time periods as the Preset economical
temperature. The heating/cooling circuit is
switched off outside the set time periods.
This mode can’t be selected for the DHW
tank.
- off mode - the control unit switches
the heating/cooling circuit or DHW tank off.
- schedule mode –the preset room
temperature is switched between Preset
comfort temperature and Preset economical
temperature depending on clock indications
and defined time programs for particular
days of the week. The DHW tank is loaded
during a period corresponding to Preset
comfort temperature value. For time
programs to Preset economical temperature,
the DHW tank is off.
- DHW mode is On.
- DHW mode is Off.
- enables a single DHW load in situation
when DHW tank heat energy saving mode is
active. User can select main mode for DHW
tank as and, if necessary, activate an
additional mode in order to save heat
energy resulting from stoppage losses of
DHW tank.
The silent operation mode for heat pump is
selected with the symbol only in the
main screen with the heat pump view. Can
choose from: Off, On-1, On-2. The
description of the silent mode is available in
the manual of the heat pump.
7.8 User settings
The control unit settings, according to user
preference.

11
•Hour –setting time. Time synchronization
function with other connected room
panels was applied.
Time synchronization will occur
at the time difference between
the room panel and the control
unit min. 10 sec.
•Date –setting date. Day of the week will
be set automatically after setting date.
•Address –enables setting individual
address of room panel in case of
connecting more room panels to the
control unit.
To make system work properly
each room panel has to have
subsequent addresses set,
chosen from pool 100…132.
•Language –menu language selection.
•Parental control - settings of parental
control. The lock activates automatically
after 5 minutes of inactivity. Unlocking
the screen is possible after pressing the
screen (about 4 sec., open padlock
animation).
•Alarm list - a list of alarms reported by
the control unit.
Pressing the symbol displays the
parameters:
•Brightness - edit –screen brightness
intensity.
•Time –screensaver –time to start the
screen saver after the time of inactivity.
•Brightness - screensaver –screen
brightness when the screen saver is
active.
•Alarm sound –turn on or off the alarm
sound.
•Key sound - turning on or off sound of
keys when pressed on the screen.
Pressing the symbol displays the
parameters:
•Internet module settings - configuration
of control unit Wi-Fi connection, with
HPnet300CM Internet module connected.
Connection of Internet module and its
configuration is described in manual for
this Internet module.
•Radio settings - configuration of the
HPrfCM radio module connection to the
control unit, in cooperation with the
HPx40CM thermostat.
•Internet module status - LAN –
information on the Wi-Fi and the
www.econet24.com web site connection
status.
•Internet module WiFi status –WiFi –
information on the Wi-Fi connection
status.
Pressing the symbol displays information
about the control unit, e.g. firmware version,
serial number, etc. Pressing the symbol
allows to update the control unit’s firmware
in accordance with section 16.
7.9 Cooperation with room panel and
room thermostat
The control unit may operate with additional
HPxTouchCM room panel and HPx40CM
wireless room thermostat. Main functions of
room panel/thermostat are: room thermostat
function, control panel function, alarms
signalization.
7.10 Cooperation with the Internet
module
The HPnet300CM Internet module enables
remote maintenance of the heat pump via
Wi-Fi or LAN network through
www.econet24.com Website. By using
computer or mobile device with installed
internet browser, user can remotely monitor
and modify operation parameters of the
control unit. In case of mobile system
(Android and iOS) is a convenient mobile
application. The mobile application can be
downloaded from the QR codes below.
ecoNET.apk ecoNET.app

12

INSTALLATION AND SERVICE SETTINGS
HPCU360iCM

14
8Hydraulic schemes
Scheme with hydraulic crossover and DHW tank
1
: 1 –heat pump, 2 –control unit, 3 –Internet
module, 4 –the 3-way valve, 5 –DHW tank temp. sensor, 6 –DHW tank, 7 –circulation pump, 8 –
hydraulic crossover temp. sensor, 9 –hydraulic crossover, 10 –panel control with room panel function, 11 -
outdoor temp. sensor, 12 –circuit 1 pump, 13 –wireless room thermostat, 14 –circuit 3 temp. sensor, 15 –
circuit 3 pump, 16 –circuit 3 mixer, 17 –circuit 2 mixer, 18 –circuit 2 pump, 19 –circuit 2 temp. sensor,
20 –DHW heater.
PROPOSED SETTINGS:
Circuit
Parameter
Settings
Service settings
Hydraulic scheme
Scheme 2
Installation control →Hydraulic scheme
Control unit sensor support
YES
Installation control →Outdoor sensor
Circuit enable
YES
Installation control →Circuit 1
Circuit type
Radiator
Installation control →Circuit 1
Regulation method
Outdoor
Installation control →Circuit 1
Circuit enable
YES
Installation control →Circuit 2
Circuit type
Floor heating
Installation control →Circuit 2
Regulation method
Outdoor
Installation control →Circuit 2
Thermostat type
Thermostat T2
Installation control →Circuit 2
Maximum temperature
55C
Installation control →Circuit 2
Circuit enable
YES
Installation control →Circuit 3
Circuit type
Fan coil
Installation control →Circuit 3
Regulation method
Outdoor
Installation control →Circuit 3
Thermostat type
Thermostat T3
Installation control →Circuit 3
DHW support
YES
Installation control →DHW settings
Circulation support
YES
Installation control →DHW settings →DHW
settings
1
Shown hydraulic scheme does not replace the central heating system and can only be used for demonstrative purposes!

15
Scheme with buffer and DHW tank
2
: 1 –heat pump, 2 –control unit, 3 –Internet module, 4 –the 3-
way valve, 5 –DHW tank temp. sensor, 6 –DHW tank, 7 –circulation pump, 8 –lower buffer temp. sensor,
9 –upper buffer temp. sensor, 10 - buffer, 11 –panel control with room panel function, 12 - outdoor temp.
sensor, 13 –circuit 1 pump, 14 –wireless room thermostat, 15 –circuit 3 temp. sensor, 16 –circuit 3
pump, 17 –circuit 3 mixer, 18 –circuit 2 mixer, 19 –circuit 2 pump, 20 –circuit 2 temp. sensor, 21 –DHW
heater.
PROPOSED SETTINGS:
Circuit
Parameter
Settings
Service settings
Hydraulic scheme
Scheme 3
Installation control →Hydraulic scheme
Control unit sensor support
YES
Installation control →Outdoor sensor
Buffer support
YES
Installation control →Buffer settings
Circuit enable
YES
Installation control →Circuit 1
Circuit type
Radiator
Installation control →Circuit 1
Regulation method
Outdoor
Installation control →Circuit 1
Circuit enable
YES
Installation control →Circuit 2
Circuit type
Floor heating
Installation control →Circuit 2
Regulation method
Outdoor
Installation control →Circuit 2
Thermostat type
Thermostat T2
Installation control →Circuit 2
Maximum temperature
55C
Installation control →Circuit 2
Circuit enable
YES
Installation control →Circuit 3
Circuit type
Floor heating
Installation control →Circuit 3
Regulation method
Outdoor
Installation control →Circuit 3
Thermostat type
Thermostat T3
Installation control →Circuit 3
Maximum temperature
55C
Installation control →Circuit 3
DHW support
YES
Installation control →DHW settings
Circulation support
YES
Installation control →DHW settings →DHW
settings
2
Shown hydraulic scheme does not replace the central heating system and can only be used for demonstrative purposes!

16
9Technical data
Power supply.
230 VAC, 50 Hz
Current consumption.
0,4 A3
Maximum rated current.
6 (6) A
Protection class.
IP 204
Ambient temperature.
0...50°C
Storage temperature.
0...65°C
Relative humidity.
5…85%, without water
vapor condensation.
The CT-10 sensor
temperature measurement
range.
0...100°C
The CT6-P sensor
temperature measurement
range.
-40...+40°C
Temp. measurement
accuracy.
±2°C
Connectors.
Screw terminals at
supply voltage side:
0.75-2.5 mm2.
Screw terminals at
control voltage side:
0.14-1.0 mm2.
Display.
Touch screen, graphical
480x272 pix.
External dimensions.
234x225x64 mm
Weight.
1.2 kg
Standards.
EN 60730-2-9
EN 60730-1
Software class.
A, acc. to EN 60730-1
Protection class.
I class
Pollution degree.
2nd pollution degree
acc to PN-EN 60730-2-
9
Installation method.
On the wall.
10 Conditions of storage and transport
The control unit cannot be exposed to direct
effects of weather, i.e. rain and sunlight.
During transport, the device cannot be
exposed to vibrations greater than typical for
normal road transport.
11 The control unit installation
11.1 Installation requirements
The control unit should be installed by a
qualified and authorized installer, in
accordance with the applicable norms and
regulations. The manufacturer bears no
responsibility for damages caused by failure
to follow this manual. The control unit cannot
be used as a stand-alone device. The
temperature of the ambient and the fitting
surface cannot exceed the range of 0…50°C.
3
It is a current consumed only by the control unit.
Overall current consumption depends on number of
devices connected to the control unit.
4
After installing all cable clamps.
11.2 Installation of control panel
The control panel is designed for mounting
on the wall, inside the room. It cannot be
used under steam condensation conditions,
must be protected against water. The control
panel should be mounted at a height allowing
comfortable operation, typically 1.5 m above
the floor.
To reduce measurement disturbances avoid
locations exposed to strong sunlight, with
poor air circulation, near heating equipment,
and directly at the door and windows,
typically 0.2 m from the edge of the door.
When selecting the cable
connecting panel with the control
unit the following rule must be
applied: use a cable where single
wire has a resistance lower than 8
Ω and the total length of the cable
does not exceed 100 m.
The control panel installation should be done
according to the following guidelines:
Disconnect the mounting frame (1) from the
back of control panel housing (2). The frame
is attached to the panel housing with latches.
Use a flat screwdriver to detach the frame.
Using sharp tool cut out holes in four places
of the cover (3) for the screw terminals.

17
Connect transmission cable, connecting panel
with the control unit, to the screw terminal
(4), as described on the plate (5). The cable
connecting panel with the control unit can be
recessed in the wall or it can run over its
surface - in this case the cable should be
additionally placed in the cable channel (6).
The connection cable cannot be conducted
along with the cables of the building mains.
The cable should not be routed near devices
emitting strong electromagnetic field.
Drill holes in the wall and use screws to fix
the mounting frame in the chosen place of
the wall, maintaining its proper position (UP).
Then attach the panel to the mounting frame
using latches.
11.3 Installation of module
The control unit should be located closest to
the electrical devices included in the central
heating system.
The control unit must not be
used as a free-standing device.
The control unit should be screwed on to the
flat surface, e.g. wall. To screw on the
control unit use mounting holes and proper
screws. Location and spacing of mounting
holes is shown in the figure below.
Rear view.
Front view (after removing the terminal cover).
After installation make sure that the device is
properly mounted and it is impossible to
detach it from the mounting surface.
11.4 Temperature sensors installation
The control unit works only with CT-10 and
CT6-P temperature sensors. Using other
sensor types is prohibited. Connecting the
wrong sensor type will cause the control unit
malfunction. At least one heating/cooling
circuit temperature sensor is necessary to
activate the control unit.
Circuit temperature sensors.
Direct circuit temperature sensor type CT-10
should be installed to a supplying pipe
coming out from the heat source.
Temperature sensor of the adjustable circuit
type CT-10 should be installed on a pipe
behind the circuit pump. Insulate the sensors
affixed to the external surface of the pipe
with using thermal insulation covering the
sensor together with the pipe.
Mounting temperature sensor: 1 - pipe, 2 –clamps, 3 -
thermal insulation, 4 - temperature sensor.
Outdoor temperature sensor.
The control unit cooperates only with outdoor
temperature sensor type CT6-P. Temperature
sensor should be fixed to a coldest wall in
180 mm

18
the building. Usually it is a north wall under
the roof. Sensor should not be exposed to
direct solar radiation or rain. Sensor should
be fixed on a minimum height of 2 m above
the ground and in a distance of at least 1.5m
from windows, chimneys and other heat
sources which could interrupt the
temperature measurement. Use a connecting
cable with a cross section of at least 0.5 mm2
and length of 25 m. Polarity of wires is not
important. Fix the sensor to the wall with the
screws. Holes containing fixing screws can be
accessed by unscrewing a sensor cover.
11.5 Temperature sensors check
Temperature sensors can be checked by
measuring their resistance in a given
temperature. In case of significant
differences between measured resistance
value and values in table below, the sensor
should be replaced with a new one.
CT-10 (NTC 10K)
Ambient temp.
[°C]
Rated
[Ω]
0
33620
10
20174
20
12535
30
8037
40
5301
50
3588
60
2486
70
1759
80
1270
90
933
100
697
110
529
120
407
CT6-P (Pt1000)
Ambient temp.
[°C]
Min.
[Ω]
Rated
[Ω]
Max.
[Ω]
0
999.7
1000.0
1000.3
25
1096.9
1097.3
1097.7
50
1193.4
1194.0
1194.6
100
1384.2
1385.0
1385.8
11.6 Connecting pumps
Make electrical connections of the circuit
pumps to the control unit according to the
electric scheme.
11.7 Connecting mixer servo
Electrical servo is installed only when there is
an adjustable circuit. The control unit
cooperates only with servos of valves
equipped with limit switches. Using other
switches is forbidden. Used servos must be
characterized with a full revolution time of 1
sec. to 255 sec.
Mixer servo description.
•Disconnect electrical supply.
•Connect the circuit temperature sensor.
•Connect electrical cables of the
adjustable circuit pump.
•Make electrical connections with the
control unit and documentation of the
valve servo.
•Read valve full opening time from a servo
housing, e.g. 140 sec. It is usually
located on a servo nameplate and
oscillates in a range of 90…180 sec.
•Connect electrical supply and activate the
control unit. Enter read time to Service
settings menu: Installation control →
Circuit 2 , 3 → Valve opening time.
•Go to the Manual test menu in the control
unit and start the pump for the controlled
circuit.
•Check all electrical cables affecting the
direction of closing and opening of the
valve. Switch to Manual test and open
valve. In case of increasing temperature
of the pipe located behind the circuit
pump, electrical connection of the servo
can be considered as correct.
•Set the appropriate function of the mixing
valve in Service settings menu:
Installation control → Circuit 2, 3 →
Circuit type.
•Set a proper circuit Maximum
temperature in control unit settings.

19
11.8 Output test
Switch to Manual control and execute tests
concerning operation of all electrical
receivers such as pumps or servos.
11.9 Connection of room panel or room
thermostat
In order to stabilize room temperature,
settings concerning room thermostat or room
panel should be made. Room thermostat or
room panel complements weather control
and corrects water temperature in the
heating/cooling circuit in case room
temperature is still improper. It is
recommended to use the control panel as a
room thermostat. Room thermostat or room
panel should be assigned to each
heating/cooling circuit.
The control panel can operate as a
room panel.
Wireless connection.
Connection of the HPx40CM room thermostat
requires connection to the G1 socket of the
HPrfCM radio module control unit and pairing
between this module and thermostat. To do
this, enter the menu: User settings → Radio
settings → Connect to therm. and confirm
with Yes to activate pairing function.
Description of HPx40CM thermostat
operation is included in device manual.
Wired connection.
Attention: Directly to the G1 control unit
socket only one control panel can be
connected. Connecting the additional
HPxTouchCM room panels (max. 32 room
panels) to the control unit requires the use of
an external power supply 12 VDC with a min.
current = number of room panels x 0.15 A.
The control unit can support maximum up to
30 room panels type HPxTouchCM.
Cross-section area of wires used
to connect room panel should be
0.5 mm2.
Max. length of wires should not exceed 30 m.
This length may be longer if the wires used
have cross-section exceeding 0.5 mm2.
11.10 Connecting the Internet module
The HPnet300CM Internet module should be
connected using the interface to Internet
module socket of the control unit. Then enter
the menu: User settings →Internet module
settings and configure the module connection
to the Wi-Fi network by entering the network
SSID, password and choosing the type of
security. The connection status of the
module to the Wi-Fi network and econet24
server can be checked in the information:
Internet module status - LAN, Internet
module status –Wi-Fi.
Description of HPnet300CM Internet module
operation and web site www.econet24.com is
included in device manual.
11.11 Weather control settings
Room temperature maintained in the heated
rooms depends on the temperature of water

20
in heating/cooling circuit. Water temperature
in heating/cooling circuit is set depending on
the temperature outside the building. The
colder is outside, the higher heating/cooling
circuit temperature. This dependence is
expressed in the control unit in a form of a
heating curve.
Make weather control settings in order to
stabilize room temperature. Weather control
should be enabled separately for each
heating/cooling circuit in service settings.
Weather control is affected by the heating
curve setting and heating curve shift setting.
Preset temperature of water in
heating/cooling circuit is calculated
automatically depending on the outside
temperature value. Due to this, proper
selection of a heating curve will guarantee
room temperature stability –independently
of the outside temperature. This is why
proper selection of a heating curve is very
important. Heating curve can be changed
and it reflects thermal characteristics of the
building. The less heated building the higher
heating curve should be. Heating curve
should be selected experimentally by
changing it in several day intervals.
Heating curves.
Guidelines for proper setting of a heating
curve:
- floor heating: 0.2…0.8
- low temperature heating: 0.8…1.6
Guidelines for selecting a proper heating
curve:
- if at dropping outside temperature, room
temperature increases, the selected heating
curve is too high,
- if at dropping outside temperature, room
temperature also drops, the selected heating
curve is too low,
- if during frost, room temperature is proper
and too low when the weather is warmer, it
is recommended to increase Heating curve
shift and decrease the heating curve,
- if during frost, room temperature is too low
and too high when the weather is warmer, it
is recommended to decrease Heating curve
shift and increase the heating curve.
Poorly warmed buildings require setting
higher heating curves, whereas well heating
buildings require lower value of heating
curve.
Preset temperature calculated from a heating
curve can be decreased or increased by the
control unit outside maximum or minimum
temperature range for a particular object.
11.12 Stabilization of room temperature
Stability of maintaining room temperature
depends on selection of weather control
settings and room thermostat settings.
12 Connecting electrical system
The control unit is designed to be fed with
230 VAC, 50 Hz voltage. The electrical
system should be:
•three core, with protective wire PE,
•in accordance with applicable regulations.
•equipped with a residual current
protection device (RCD) with inrush
current IΔn≤30 mA, protecting against
the effects of electric shock and limiting
damage to the control unit, including
protection against fire.
After the control unit is turned off,
dangerous voltage on terminals
might occur. Before starting any
assembly works, disconnect the
mains supply and make sure that
there is no dangerous voltage on
terminals and the leads.
All peripherals may be connected
only by qualified persons in
accordance with applicable
regulations. Keep safety
precautions to prevent
electrocution. The control unit
should be equipped with a set of
Outdoor temperature [ºC]
Flow temp. [ºC]