Daikin RBLQ05 07CAV3, RDLQ05 07CAV3, RKCB07CAV3, RK2CB07CAV3, RKMBUHCA3V3 Installer reference guide
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Installer reference guide
ROTEX HPSU low temperature monobloc
RBLQ05+07CAV3
RDLQ05+07CAV3
RKCB07CAV3
RK2CB07CAV3
RKMBUHCA3V3
RKMBUHCA9W1
Installer reference guide
ROTEX HPSU low temperature monobloc
English
Table of Contents
Table of Contents
1 General safety precautions 4
1.1 About the documentation .......................................................... 4
1.1.1 Meaning of warnings and symbols.............................. 4
1.2 For the installer.......................................................................... 4
1.2.1 General ....................................................................... 4
1.2.2 Installation site ............................................................ 4
1.2.3 Refrigerant .................................................................. 5
1.2.4 Brine............................................................................ 5
1.2.5 Water .......................................................................... 5
1.2.6 Electrical ..................................................................... 6
2 About the documentation 6
2.1 About this document.................................................................. 6
2.2 Installer reference guide at a glance ......................................... 7
3 About the box 7
3.1 Overview: About the box ........................................................... 7
3.2 Outdoor unit............................................................................... 7
3.2.1 To unpack the outdoor unit ......................................... 7
3.2.2 To remove the accessories from the outdoor unit....... 8
3.3 Control box ................................................................................ 8
3.3.1 To unpack the control box........................................... 8
3.3.2 To remove the accessories from the control box ........ 8
3.4 Option box ................................................................................. 8
3.4.1 To unpack the option box............................................ 8
3.4.2 To remove the accessories from the option box......... 9
3.5 Backup heater ........................................................................... 9
3.5.1 To unpack the backup heater ..................................... 9
3.5.2 To remove the accessories from the backup heater... 9
4 About the units and options 9
4.1 Overview: About the units and options...................................... 9
4.2 Identification .............................................................................. 9
4.2.1 Identification label: Outdoor unit ................................. 10
4.2.2 Identification label: Control box................................... 10
4.2.3 Identification label: Option box.................................... 10
4.2.4 Identification label: Backup heater.............................. 10
4.3 Combining units and options ..................................................... 10
4.3.1 Possible combinations of outdoor unit and options..... 10
4.3.2 Possible options for the outdoor unit........................... 11
4.3.3 Possible options for the control box............................ 12
4.3.4 Possible options for the option box............................. 12
4.3.5 Possible combinations of outdoor unit and domestic
hot water tank ............................................................. 12
5 Application guidelines 13
5.1 Overview: Application guidelines............................................... 13
5.2 Setting up the space heating/cooling system ............................ 13
5.2.1 Single room................................................................. 13
5.2.2 Multiple rooms – OneLWT zone ................................ 15
5.2.3 Multiple rooms – TwoLWT zones............................... 17
5.3 Setting up an auxiliary heat source for space heating............... 18
5.4 Setting up the domestic hot water tank ..................................... 19
5.4.1 System layout – Standalone DHW tank...................... 19
5.4.2 Selecting the volume and desired temperature for
the DHW tank.............................................................. 19
5.4.3 Setup and configuration – DHW tank.......................... 20
5.4.4 DHW pump for instant hot water................................. 20
5.4.5 DHW pump for disinfection ......................................... 20
5.5 Setting up the energy metering ................................................. 21
5.5.1 Produced heat............................................................. 21
5.5.2 Consumed energy....................................................... 21
5.5.3 Normal kWh rate power supply................................... 21
5.5.4 Preferential kWh rate power supply ............................ 22
5.6 Setting up the power consumption control ................................ 22
5.6.1 Permanent power limitation ........................................ 22
5.6.2 Power limitation activated by digital inputs .................. 23
5.6.3 Power limitation process .............................................. 23
5.7 Setting up an external temperature sensor ................................ 24
6 Preparation 24
6.1 Overview: Preparation................................................................ 24
6.2 Preparing installation site ........................................................... 24
6.2.1 Installation site requirements of the outdoor unit ......... 24
6.2.2 Additional installation site requirements of the
outdoor unit in cold climates ........................................ 25
6.2.3 Installation site requirements of the control box........... 25
6.2.4 Installation site requirements of the option box............ 26
6.2.5 Installation site requirements of the backup heater ..... 26
6.3 Preparing water piping ............................................................... 26
6.3.1 Water circuit requirements ........................................... 26
6.3.2 Formula to calculate the expansion vessel pre-
pressure ....................................................................... 28
6.3.3 To check the water volume and flow rate .................... 28
6.3.4 Changing the pre-pressure of the expansion vessel.... 29
6.3.5 To check the water volume: Examples ........................ 29
6.4 Preparing electrical wiring .......................................................... 29
6.4.1 About preparing electrical wiring.................................. 29
6.4.2 About preferential kWh rate power supply ................... 29
6.4.3 Overview of electrical connections except external
actuators ...................................................................... 29
6.4.4 Overview of electrical connections for external and
internal actuators ......................................................... 30
7 Installation 31
7.1 Overview: Installation ................................................................. 31
7.2 Opening the units ....................................................................... 32
7.2.1 About opening the units ............................................... 32
7.2.2 To open the outdoor unit.............................................. 32
7.2.3 To open the switch box cover of the outdoor unit ........ 32
7.2.4 To open the control box ............................................... 32
7.2.5 To open the option box ................................................ 32
7.2.6 To open the backup heater .......................................... 33
7.2.7 To open the switch box cover of the backup heater .... 33
7.3 Mounting the outdoor unit........................................................... 33
7.3.1 About mounting the outdoor unit.................................. 33
7.3.2 Precautions when mounting the outdoor unit............... 33
7.3.3 To provide the installation structure ............................. 33
7.3.4 To install the outdoor unit............................................. 34
7.3.5 To provide drainage ..................................................... 35
7.3.6 To prevent the outdoor unit from falling over ............... 35
7.4 Mounting the control box ............................................................ 36
7.4.1 About mounting the control box ................................... 36
7.4.2 Precautions when mounting the control box ................ 36
7.4.3 To install the control box .............................................. 36
7.5 Mounting the option box ............................................................. 36
7.5.1 About mounting the option box .................................... 36
7.5.2 Precautions when mounting the option box................. 36
7.5.3 To install the option box ............................................... 36
7.6 Mounting the backup heater....................................................... 36
7.6.1 About mounting the backup heater.............................. 36
7.6.2 Precautions when mounting the backup heater........... 36
7.6.3 To install the backup heater......................................... 36
7.7 Connecting the water piping....................................................... 37
7.7.1 About connecting the water piping............................... 37
7.7.2 Precautions when connecting the water piping............ 37
7.7.3 To connect the water piping......................................... 37
7.7.4 To connect the water piping to the backup heater....... 38
7.7.5 About the valve kit........................................................ 38
7.7.6 To protect the water circuit against freezing ................ 39
7.7.7 To fill the water circuit .................................................. 40
7.7.8 To fill the domestic hot water tank ............................... 41
7.7.9 To insulate the water piping ......................................... 41
7.8 Connecting the electrical wiring.................................................. 41
7.8.1 About connecting the electrical wiring.......................... 41
7.8.2 Precautions when connecting the electrical wiring ...... 41
Installer reference guide
2
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Table of Contents
7.8.3 Guidelines when connecting the electrical wiring ....... 41
7.8.4 To connect the electrical wiring on the outdoor unit.... 41
7.8.5 To connect the main power supply ............................. 42
7.8.6 To connect the user interface ..................................... 43
7.8.7 To connect the shut-off valve...................................... 44
7.8.8 To connect the domestic hot water pump................... 45
7.8.9 To connect the electrical wiring on the control box..... 45
7.8.10 To connect the control box power supply ................... 45
7.8.11 To connect the interconnection cable between
control box and outdoor unit ....................................... 45
7.8.12 To connect the electrical wiring on the option box ...... 46
7.8.13 To connect the option box power supply .................... 46
7.8.14 To connect the interconnection cable between option
box and control box..................................................... 46
7.8.15 To connect the electrical meters ................................. 46
7.8.16 To connect the power consumption digital inputs ....... 47
7.8.17 To connect the alarm output ....................................... 47
7.8.18 To connect the space cooling/heating ON/OFF
output .......................................................................... 47
7.8.19 To connect the changeover to external heat source ... 47
7.8.20 To connect the electrical wiring on the backup heater 48
7.8.21 To connect the backup heater power supply .............. 48
7.8.22 To connect the backup heater kit to the control box ... 49
7.8.23 To connect the valve kit .............................................. 49
7.9 Finishing the outdoor unit installation ........................................ 50
7.9.1 To close the outdoor unit ............................................ 50
7.10 Finishing the control box installation ......................................... 50
7.10.1 To close the control box .............................................. 50
7.11 Finishing the option box installation .......................................... 50
7.11.1 To close the option box ............................................... 50
7.12 Finishing the backup heater installation .................................... 50
7.12.1 To close the backup heater......................................... 50
8 Configuration 51
8.1 Overview: Configuration ............................................................ 51
8.1.1 To connect the PC cable to the switch box................. 51
8.1.2 To access the most used commands ......................... 51
8.1.3 To copy the system settings from the first to the
second user interface.................................................. 52
8.1.4 To copy the language set from the first to the second
user interface .............................................................. 53
8.1.5 Quick wizard: Set the system layout after first power
ON............................................................................... 53
8.2 Basic configuration .................................................................... 53
8.2.1 Quick wizard: Language / time and date..................... 53
8.2.2 Quick wizard: Standard............................................... 53
8.2.3 Quick wizard: Options ................................................. 55
8.2.4 Quick wizard: Capacities (energy metering) ............... 57
8.2.5 Space heating/cooling control..................................... 57
8.2.6 Domestic hot water control ......................................... 61
8.2.7 Contact/helpdesk number ........................................... 62
8.3 Advanced configuration/optimization......................................... 62
8.3.1 Space heating/cooling operation: advanced............... 62
8.3.2 Domestic hot water control: advanced........................ 66
8.3.3 Heat source settings ................................................... 70
8.3.4 System settings........................................................... 71
8.4 Menu structure: Overview user settings .................................... 76
8.5 Menu structure: Overview installer settings............................... 77
9 Commissioning 78
9.1 Overview: Commissioning......................................................... 78
9.2 Precautions when commissioning ............................................. 78
9.3 Checklist before commissioning................................................ 78
9.4 Checklist during commissioning ................................................ 78
9.4.1 To check the minimum flow rate ................................. 78
9.4.2 Air purge function........................................................ 79
9.4.3 To perform a test run .................................................. 80
9.4.4 To perform an actuator test run .................................. 80
9.4.5 Underfloor heating screed dryout................................ 80
10.1 About locking and unlocking....................................................... 82
Possible function locks ............................................................... 82
To check if locking is active........................................................ 82
To activate or deactivate a function lock .................................... 82
To activate or deactivate button lock.......................................... 82
11 Maintenance and service 82
11.1 Overview: Maintenance and service .......................................... 82
11.2 Maintenance safety precautions................................................. 82
11.2.1 Opening the outdoor unit ............................................. 83
11.2.2 Opening the control box ............................................... 83
11.2.3 Opening the option box ................................................ 83
11.2.4 Opening the backup heater.......................................... 83
11.3 Checklist for yearly maintenance of the outdoor unit ................. 83
12 Troubleshooting 83
12.1 Overview: Troubleshooting......................................................... 83
12.2 Precautions when troubleshooting ............................................. 84
12.3 Solving problems based on symptoms....................................... 84
12.3.1 Symptom: The unit is NOT heating or cooling as
expected ...................................................................... 84
12.3.2 Symptom: The compressor does NOT start (space
heating or domestic water heating).............................. 84
12.3.3 Symptom: The pump is making noise (cavitation) ....... 84
12.3.4 Symptom: The pressure relief valve opens.................. 85
12.3.5 Symptom: The water pressure relief valve leaks ......... 85
12.3.6 Symptom: The space is NOT sufficiently heated at
low outdoor temperatures ............................................ 85
12.3.7 Symptom: The pressure at the tapping point is
temporarily unusual high.............................................. 86
12.3.8 Symptom: Decoration panels are pushed away due
to a swollen tank .......................................................... 86
12.3.9 Symptom: Tank disinfection function is NOT
completed correctly (AH-error)..................................... 86
12.3.10 Symptom: The energy metering (produced heat) is
NOT working correctly ................................................. 86
12.4 Solving problems based on error codes ..................................... 86
12.4.1 Error codes: Overview ................................................. 86
13 Disposal 89
13.1 Overview: Disposal..................................................................... 89
13.2 To pump down............................................................................ 89
13.3 To start and stop forced cooling ................................................. 89
14 Technical data 90
14.1 Overview: Technical data ........................................................... 90
14.2 Dimensions and service space................................................... 90
14.2.1 Dimensions and service space: Outdoor unit .............. 90
14.2.2 Dimensions and service space: Options ...................... 91
14.3 Center of gravity ......................................................................... 93
14.3.1 Center of gravity: Outdoor unit ..................................... 93
14.3.2 Center of gravity: Options ............................................ 94
14.4 Components ............................................................................... 95
14.4.1 Components: Outdoor unit ........................................... 95
14.4.2 Components: Switch box (outdoor unit) ....................... 96
14.4.3 Components: Options .................................................. 97
14.4.4 Components: Switch box (options) .............................. 99
14.5 Piping diagram ........................................................................... 100
14.5.1 Piping diagram: Outdoor unit .......................................100
14.6 Wiring diagram ...........................................................................101
14.6.1 Wiring diagram: Outdoor unit .......................................101
14.7 Operation range ......................................................................... 109
14.7.1 Valve kit necessity .......................................................109
14.8 ESP curve .................................................................................. 110
14.8.1 ESP curve: Outdoor unit ..............................................110
15 Glossary 111
16 Field settings table 112
10 Hand-over to the user 82
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
3
1 General safety precautions
1 General safety precautions
1.1 About the documentation
▪ The original documentation is written in English. All other
languages are translations.
▪ The precautions described in this document cover very important
topics, follow them carefully.
▪ The installation of the system, and all activities described in the
installation manual and the installer reference guide must be
performed by an authorized installer.
1.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning because of
extreme hot or cold temperatures.
WARNING: FLAMMABLE MATERIAL
WARNING
Tear apart and throw away plastic packaging bags so that
nobody, especially children, can play with them. Possible
risk: suffocation.
DANGER: RISK OF BURNING
▪ Do NOT touch the refrigerant piping, water piping or
internal parts during and immediately after operation. It
could be too hot or too cold. Give it time to return to
normal temperature. If you must touch it, wear
protective gloves.
▪ Do NOT touch any accidental leaking refrigerant.
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
CAUTION
Do NOT touch the air inlet or aluminum fins of the unit.
NOTICE
▪ Do NOT place any objects or equipment on top of the
unit.
▪ Do NOT sit, climb or stand on the unit.
WARNING
Indicates a situation that could result in death or serious
injury.
CAUTION
Indicates a situation that could result in minor or moderate
injury.
NOTICE
Indicates a situation that could result in equipment or
property damage.
INFORMATION
Indicates useful tips or additional information.
1.2 For the installer
1.2.1 General
If you are not sure how to install or operate the unit, contact your
dealer.
NOTICE
Improper installation or attachment of equipment or
accessories could result in electric shock, short-circuit,
leaks, fire or other damage to the equipment. Only use
accessories, optional equipment and spare parts made or
approved by ROTEX.
WARNING
Make sure installation, testing and applied materials
comply with applicable legislation (on top of the
instructions described in the ROTEX documentation).
CAUTION
Wear adequate personal protective equipment (protective
gloves, safety glasses,…) when installing, maintaining or
servicing the system.
NOTICE
Works executed on the outdoor unit are best done under
dry weather conditions to avoid water ingress.
In accordance with the applicable legislation, it might be necessary
to provide a logbook with the product containing at least: information
on maintenance, repair work, results of tests, stand-by periods,…
Also, at least, following information must be provided at an
accessible place at the product:
▪ Instructions for shutting down the system in case of an emergency
▪ Name and address of fire department, police and hospital
▪ Name, address and day and night telephone numbers for
obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
1.2.2 Installation site
▪ Provide sufficient space around the unit for servicing and air
circulation.
▪ Make sure the installation site withstands the unit's weight and
vibration.
▪ Make sure the area is well ventilated. Do NOT block any
ventilation openings.
▪ Make sure the unit is level.
Do NOT install the unit in the following places:
▪ In potentially explosive atmospheres.
▪ In places where there is machinery that emits electromagnetic
waves. Electromagnetic waves may disturb the control system,
and cause malfunction of the equipment.
▪ In places where there is a risk of fire due to the leakage of
flammable gases (example: thinner or gasoline), carbon fibre,
ignitable dust.
▪ In places where corrosive gas (example: sulphurous acid gas) is
produced. Corrosion of copper pipes or soldered parts may cause
the refrigerant to leak.
Installer reference guide
4
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
1 General safety precautions
1.2.3 Refrigerant
If applicable. See the installation manual or installer reference guide
of your application for more information.
NOTICE
Make sure refrigerant piping installation complies with
applicable legislation. In Europe, EN378 is the applicable
standard.
NOTICE
Make sure the field piping and connections are not
subjected to stress.
WARNING
During tests, NEVER pressurize the product with a
pressure higher than the maximum allowable pressure (as
indicated on the nameplate of the unit).
WARNING
Take sufficient precautions in case of refrigerant leakage. If
refrigerant gas leaks, ventilate the area immediately.
Possible risks:
▪ Excessive refrigerant concentrations in a closed room
can lead to oxygen deficiency.
▪ Toxic gas may be produced if refrigerant gas comes
into contact with fire.
WARNING
Always recover the refrigerant. Do NOT release them
directly into the environment. Use a vacuum pump to
evacuate the installation.
NOTICE
After all the piping has been connected, make sure there is
no gas leak. Use nitrogen to perform a gas leak detection.
NOTICE
▪ To avoid compressor breakdown, do NOT charge more
than the specified amount of refrigerant.
▪ When the refrigerant system is to be opened,
refrigerant must be treated according to the applicable
legislation.
If Then
A siphon tube is NOT present Charge with the cylinder upside
down.
▪ Open refrigerant cylinders slowly.
▪ Charge the refrigerant in liquid form. Adding it in gas form may
prevent normal operation.
CAUTION
When the refrigerant charging procedure is done or when
pausing, close the valve of the refrigerant tank
immediately. If the valve is not closed immediately,
remaining pressure might charge additional refrigerant.
Possible consequence: Incorrect refrigerant amount.
1.2.4 Brine
If applicable. See the installation manual or installer reference guide
of your application for more information.
WARNING
The selection of the brine MUST be in accordance with the
applicable legislation.
WARNING
Take sufficient precautions in case of brine leakage. If
brine leaks, ventilate the area immediately and contact
your local dealer.
WARNING
The ambient temperature inside the unit can get much
higher than that of the room, e.g. 70°C. In case of a brine
leak, hot parts inside the unit can create a hazardous
situation.
WARNING
The use and installation of the application MUST comply
with the safety and environmental precautions specified in
the applicable legislation.
WARNING
Make sure there is no oxygen in the system. Refrigerant
may only be charged after performing the leak test and the
vacuum drying.
▪ In case re-charge is required, refer to the nameplate of the unit. It
states the type of refrigerant and necessary amount.
▪ The unit is factory charged with refrigerant and depending on pipe
sizes and pipe lengths some systems require additional charging
of refrigerant.
▪ Only use tools exclusively for the refrigerant type used in the
system, this to ensure pressure resistance and prevent foreign
materials from entering into the system.
▪ Charge the liquid refrigerant as follows:
If Then
A siphon tube is present
(i.e., the cylinder is marked with
"Liquid filling siphon attached")
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Charge with the cylinder upright.
1.2.5 Water
If applicable. See the installation manual or installer reference guide
of your application for more information.
NOTICE
Make sure water quality complies with EU directive
98/83EC.
Installer reference guide
5
2 About the documentation
1.2.6 Electrical
DANGER: RISK OF ELECTROCUTION
▪ Turn OFF all power supply before removing the
switch box cover, connecting electrical wiring or
touching electrical parts.
▪ Disconnect the power supply for more than 1minute,
and measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing.
The voltage MUST be less than 50 V DC before you
can touch electrical components. For the location of the
terminals, see the wiring diagram.
▪ Do NOT touch electrical components with wet hands.
▪ Do NOT leave the unit unattended when the service
cover is removed.
WARNING
If NOT factory installed, a main switch or other means for
disconnection, having a contact separation in all poles
providing full disconnection under overvoltage category III
condition, shall be installed in the fixed wiring.
WARNING
▪ ONLY use copper wires.
▪ Make sure the field wiring complies with the applicable
legislation.
▪ All field wiring must be performed in accordance with
the wiring diagram supplied with the product.
▪ NEVER squeeze bundled cables and make sure they
do not come in contact with the piping and sharp
edges. Make sure no external pressure is applied to the
terminal connections.
▪ Make sure to install earth wiring. Do NOT earth the unit
to a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
▪ Make sure to use a dedicated power circuit. NEVER
use a power supply shared by another appliance.
▪ Make sure to install the required fuses or circuit
breakers.
▪ Make sure to install an earth leakage protector. Failure
to do so may cause electric shock or fire.
▪ When installing the earth leakage protector, make sure
it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
NOTICE
Precautions when laying power wiring:
▪ Do not connect wiring of different thicknesses to the
power terminal block (slack in the power wiring may
cause abnormal heat).
▪ When connecting wiring which is the same thickness,
do as shown in the figure below.
▪ For wiring, use the designated power wire and connect
firmly, then secure to prevent outside pressure being
exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
damage the head and make proper tightening
impossible.
▪ Over-tightening the terminal screws may break them.
Install power cables at least 1 metre away from televisions or radios
to prevent interference. Depending on the radio waves, a distance of
1metre may not be sufficient.
WARNING
▪ After finishing the electrical work, confirm that each
electrical component and terminal inside the electrical
components box is connected securely.
▪ Make sure all covers are closed before starting up the
unit.
NOTICE
Only applicable if the power supply is three‑phase, and the
compressor has an ON/OFF starting method.
If there exists the possibility of reversed phase after a
momentary black out and the power goes on and off while
the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed
phase can break the compressor and other parts.
2 About the documentation
2.1 About this document
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪ General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the box of the outdoor unit)
▪ Outdoor unit installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the outdoor unit)
▪ Control box installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the control box)
Installer reference guide
6
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
3 About the box
1
2
▪ Option box installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the option box)
▪ Backup heater installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the backup heater)
▪ Installer reference guide:
▪ Preparation of the installation, technical specifications, good
practices, reference data,…
▪ Format: Digital files on the ROTEX homepage
▪ Addendum book for optional equipment:
▪ Additional info about how to install optional equipment
▪ Format: Paper (in the box of the outdoor unit) + Digital files on
the ROTEX homepage
Latest revisions of the supplied documentation may be available on
the regional ROTEX website or via your dealer.
The original documentation is written in English. All other languages
are translations.
2.2 Installer reference guide at a glance
Chapter Description
General safety
precautions
About the documentation What documentation exists for the
About the box How to unpack the units and remove
About the units and
options
Application guidelines Various installation setups of the system
Preparation What to do and know before going
Installation What to do and know to install the
Configuration What to do and know to configure the
Commissioning What to do and know to commission the
Hand‑over to the user What to give and explain to the user
Maintenance and service How to maintain and service the units
Troubleshooting What to do in case of problems
Disposal How to dispose of the system
Technical data Specifications of the system
Glossary Definition of terms
Field settings table Table to be filled in by the installer, and
Safety instructions that you must read
before installing
installer
their accessories
▪ How to identify the units
▪ Possible combinations of units and
options
on‑site
system
system after it is installed
system after it is configured
kept for future reference
Note: There is also an installer settings
table in the user reference guide. This
table has to be filled in by the installer
and handed over to the user.
3 About the box
3.1 Overview: About the box
This chapter describes what you have to do after the boxes with the
outdoor unit, control box, and/or backup heater are delivered on-site.
It contains information about:
▪ Unpacking and handling the units
▪ Removing the accessories from the units
Keep the following in mind:
▪ At delivery, the unit must be checked for damage. Any damage
must be reported immediately to the carrier's claims agent.
▪ Bring the packed unit as close as possible to its final installation
position to prevent damage during transport.
3.2 Outdoor unit
3.2.1 To unpack the outdoor unit
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
7
3 About the box
5×
3×
1× 1× 1× 1×
a b c d
2× 1×2×
fe g
1
2
2× 2× 2×
a b c
1
3.2.2 To remove the accessories from the outdoor unit
1 Open the outdoor unit.
3.3.2 To remove the accessories from the control box
1 Open the control box.
2 Remove the accessories.
a General safety precautions
b Addendum book for optional equipment
c Outdoor unit installation manual
d Operation manual
e Sealing ring for shut-off valve
f Shut-off valve
g Unit mounting plate
3.3 Control box
NOTICE
Control box RKCB07CAV3 is an option and can only be
used in combination with outdoor units RDLQ05+07CAV3
and RBLQ05+07CAV3.
3.3.1 To unpack the control box
2 Remove the accessories.
a M4 bolts for user interface
b M4 nuts for user interface
c Wires for domestic hot water booster heater relay
3.4 Option box
NOTICE
▪ Option box RK2CB07CAV3 is an option and can only
be used in combination with outdoor units
RDLQ05+07CAV3 and RBLQ05+07CAV3.
▪ To be able to use the option box, it is required that
optional control box RKCB07CAV3 is part of the
system.
3.4.1 To unpack the option box
Installer reference guide
8
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
2
3.4.2 To remove the accessories from the
2×
a
1
2
option box
1 Open the option box.
4 About the units and options
3.5.2 To remove the accessories from the backup heater
1 Remove the wall bracket from the box.
2 Remove the accessories.
a Connectors for interconnection cable between the option
box and control box RKCB07CAV3.
3.5 Backup heater
NOTICE
▪ The backup heater is an option and can only be used in
combination with outdoor units RDLQ05+07CAV3 and
RBLQ05+07CAV3.
▪ To be able to use the backup heater, it is required that
optional control box RKCB07CAV3 is part of the
system.
3.5.1 To unpack the backup heater
4 About the units and options
4.1 Overview: About the units and options
This chapter contains information about:
▪ Identifying the outdoor unit
▪ Identifying the control box
▪ Identifying the backup heater
▪ Combining the outdoor unit with options
▪ Combining the control box with options
▪ Possible combinations of outdoor unit and control box
4.2 Identification
NOTICE
When installing or servicing several units at the same time,
make sure NOT to switch the service panels between
different models.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
9
4 About the units and options
FHL1
FHL2
FHL3
a b c ed d
f
g
h
i
4.2.1 Identification label: Outdoor unit
Location
Model identification
Example: RB/DLQ05CAV3
Code Explanation
R Monobloc outdoor heat pump
B
D
L Low water temperature – ambient zone: −10~
Q Refrigerant R410A
05 Capacity class
CA Model series
V3 Power supply
B=Reversible (heating+cooling)
D=Heating only
−25°C
4.2.2 Identification label: Control box
Location
Code Description
RK ROTEX kit
2 Optional
CB Control box
07 Capacity class
CA Model series
V3 Power supply
4.2.4 Identification label: Backup heater
Location
Model identification
Example: RK M BUH CA 3 V3
Code Explanation
RK ROTEX kit
M Designed for Monobloc
BUH Backup heater
CA Model series
3 Capacity of heater kit (kW)
V3 Power supply
Model identification
Example: RKCB07 CA V3
Code Description
RK ROTEX kit
CB Control box
07 Capacity class
CA Model series
V3 Power supply
4.2.3 Identification label: Option box
Location
Model identification
Example: RK2CB07 CA V3
Option System components required for that option
Outdoor unit
Optional equipment
RBLQ05+07CAV3 or
RDLQ05+07CAV3
4.3 Combining units and options
4.3.1 Possible combinations of outdoor unit
Control box
RKCB07CAV3
and options
a Outdoor unit (RBLQ05+07CAV3 or RDLQ05+07CAV3)
b Refrigerant part of the outdoor unit
c Hydro part of the outdoor unit
d Valve kit EKMBHBP1
e Backup heater kit (RKMBUHCA3V3 or RKMBUHCA9W1)
f Control box RKCB07CAV3
g Option box RK2CB07CAV3
h Domestic hot water tank
i Space heating circuit
Option box
RK2CB07CAV3
Valve kit EKMBHBP1
Installer reference guide
10
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Option System components required for that option
Outdoor unit
RBLQ05+07CAV3 or
RDLQ05+07CAV3
User interface (RKRUCBL*)
(mandatory)
Domestic hot water tank O O
Remote outdoor sensor
(EKRSCA1)
PC configurator
(EKPCCAB)
Room thermostat
(RKRTWA, RKRTR1)
Remote sensor for wireless
thermostat (EKRTETS)
Heat pump convector
(RFWXV)
Backup heater kit
(RKMBUHCA3V3,
RKMBUHCA9W1)
Remote indoor sensor
(KRCS01-1)
Field-supplied components
Space heating/cooling
operation control (or
shut‑off valve)
Preferential kWh rate
power supply (voltage‑free
contact)
Domestic hot water pump O O
Electric meter O O O
Power consumption digital
inputs
Alarm output O O O
Space cooling/heating ON/
OFF output
Changeover to external
heat source
(a) Only for RBLQ05+07CAV3.
O
O
O
O O
O O
O O
O O O
O O O
O
O O
O O O
O O O
O O O
Control box
RKCB07CAV3
4 About the units and options
Option box
RK2CB07CAV3
Valve kit EKMBHBP1
(a)
4.3.2 Possible options for the outdoor unit
User interface (RKRUCBL*)
The user interface and a possible additional user interface are
available as an option.
The additional user interface can be connected:
▪ To have both:
▪ control close to the control box,
▪ room thermostat functionality in the principal space to be
heated.
To have an interface containing other languages.
Following user interfaces are available:
▪ RKRUCBL1 contains following languages: German, French,
Dutch, Italian.
▪ RKRUCBL2 contains following languages: English, Swedish,
Norwegian, Finnish.
▪ RKRUCBL3 contains following languages: English, Spanish,
Greek, Portuguese.
▪ RKRUCBL4 contains following languages: English, Turkish,
Polish, Romanian.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
▪ RKRUCBL5 contains following languages: German, Czech,
Slovenian, Slovakian.
▪ RKRUCBL6 contains following languages: English, Croatian,
Hungarian, Estonian.
▪ RKRUCBL7 contains following languages: English, German,
Russian, Danish.
Languages on the user interface can be uploaded by PC software or
copied from an user interface to the other.
For installation instructions, see "7.8.6 To connect the user
interface"on page43.
INFORMATION
▪ If control box RKCB07CAV3 is NOT part of the system,
connect the user interface directly to the outdoor unit.
▪ If control box RKCB07CAV3 is part of the system, you
can also connect the user interface to the control box.
Domestic hot water tank
For providing domestic hot water, a domestic hot water tank can be
connected to the outdoor unit.
The following domestic hot water tanks are available:
▪ Polypropylene tank (HYC)
There are 2 types available: 300 and 500 litre.
Installer reference guide
11
4 About the units and options
For installation instructions, see the installation manual of the
domestic hot water tank and addendum book for optional equipment.
INFORMATION
▪ The domestic hot water tank can only be connected if
control box RKCB07CAV3 is part of the system.
▪ The domestic hot water tank is connected to the hydro
part of the outdoor unit, and wired to control box
RKCB07CAV3.
Remote outdoor sensor (EKRSCA1)
By default the sensor inside the outdoor unit will be used to measure
the outdoor temperature.
As an option the remote outdoor sensor can be installed to measure
the outdoor temperature on another location (e.g. to avoid direct
sunlight) to have an improved system behaviour.
For installation instructions, see the installation manual of the remote
outdoor sensor and the addendum book for optional equipment.
Heat pump convector (RFWXV)
For providing space heating/cooling, it is possible to use heat pump
convectors (RFWXV).
For installation instructions, refer to the installation manual of the
heat pump convectors, and the addendum book for optional
equipment.
4.3.3 Possible options for the control box
User interface (RKRUCBL*)
The user interface and a possible additional user interface are
available as an option.
The additional user interface can be connected:
▪ To have both:
▪ control close to the control box,
▪ room thermostat functionality in the principal space to be
heated.
To have an interface containing other languages.
Following user interfaces are available:
▪ RKRUCBL1 contains following languages: German, French,
Dutch, Italian.
▪ RKRUCBL2 contains following languages: English, Swedish,
Norwegian, Finnish.
▪ RKRUCBL3 contains following languages: English, Spanish,
Greek, Portuguese.
▪ RKRUCBL4 contains following languages: English, Turkish,
Polish, Romanian.
▪ RKRUCBL5 contains following languages: German, Czech,
Slovenian, Slovakian.
▪ RKRUCBL6 contains following languages: English, Croatian,
Hungarian, Estonian.
▪ RKRUCBL7 contains following languages: English, German,
Russian, Danish.
Languages on the user interface can be uploaded by PC software or
copied from an user interface to the other.
For installation instructions, see "7.8.6 To connect the user
interface"on page43.
INFORMATION
▪ If control box RKCB07CAV3 is NOT part of the system,
connect the user interface directly to the outdoor unit.
▪ If control box RKCB07CAV3 is part of the system, you
can also connect the user interface to the control box.
Room thermostat (RKRTWA, RKRTR1, RTRNETA)
You can connect an optional room thermostat to control box
RKCB07CAV3.This thermostat can either be wired (RKRTWA) or
wireless (RKRTR1and RTRNETA). Thermostat RTRNETA can only
be used in heating-only systems.
For installation instructions, see the installation manual of the room
thermostat and addendum book for optional equipment.
Remote sensor for wireless thermostat (EKRTETS)
You can use a wireless indoor temperature sensor (EKRTETS) only
in combination with the wireless thermostat (RKRTR1).
For installation intructions, see the installation manual of the room
thermostat and addendum book for optional equipment.
PC configurator (EKPCCAB)
The PC cable makes a connection between the switch box of the
outdoor unit (or that of control box RKCB07CAV3) and a PC. It gives
the possibility to upload different language files to the user interface,
and parameters to the outdoor unit. For the available language files,
contact your local dealer.
The software and corresponding operating instructions are available
on the ROTEX homepage.
For installation instructions, see the installation manual of the PC
cable, the "8Configuration"on page51 chapter, and the addendum
book for optional equipment.
4.3.4 Possible options for the option box
Remote indoor sensor (KRCS01-1)
By default the internal user interface sensor will be used as room
temperature sensor.
As an option the remote indoor sensor can be installed to measure
the room temperature on another location.
The remote indoor sensor is connected to option box
RK2CB07CAV3. For installation instructions, see the installation
manual of the remote indoor sensor and the addendum book for
optional equipment.
INFORMATION
▪ The remote indoor sensor can only be used in case the
user interface is configured with room thermostat
functionality.
▪ You can only connect either the remote indoor sensor
or the remote outdoor sensor.
4.3.5 Possible combinations of outdoor unit and domestic hot water tank
Outdoor unit Domestic hot water tank
HYC 343/19/0-DB HYC 544/32/0-DB
RBLQ05CAV3 O O
RBLQ07CAV3 O O
RDLQ05CAV3 O O
RDLQ07CAV3 O O
INFORMATION
▪ The domestic hot water tank can only be connected if
control box RKCB07CAV3 is part of the system.
▪ The domestic hot water tank is connected to the hydro
part of the outdoor unit, and wired to control box
RKCB07CAV3.
Installer reference guide
12
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5 Application guidelines
B
A
a
b
c
5 Application guidelines
5.1 Overview: Application guidelines
The purpose of the application guidelines is to give a glance of the
possibilities of the ROTEX heatpump system.
NOTICE
▪ The illustrations in the application guidelines are meant
for reference only, and are NOT to be used as detailed
hydraulic diagrams. The detailed hydraulic
dimensioning and balancing are NOT shown, and are
the responsibility of the installer.
▪ For more information about the configuration settings to
optimize heatpump operation, see "8Configuration"on
page51.
This chapter contains application guidelines for:
▪ Setting up the space heating/cooling system
▪ Setting up an auxiliary heat source for space heating
▪ Setting up the domestic hot water tank
▪ Setting up the energy metering
▪ Setting up the power consumption
▪ Setting up an external temperature sensor
5.2 Setting up the space heating/ cooling system
The heatpump system supplies leaving water to heat emitters in one
or more rooms.
Because the system offers a wide flexibility to control the
temperature in each room, you need to answer the following
questions first:
▪ How many rooms are heated (or cooled) by the ROTEX
heatpump system?
▪ Which heat emitter types are used in each room and what is their
design leaving water temperature?
Once the space heating/cooling requirements are clear, ROTEX
recommends to follow the setup guidelines below.
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
INFORMATION
In case an external room thermostat is used and room frost
protection needs to be guaranteed in all conditions, then
you have to set auto emergency [A.5.1.2] to 1.
5.2.1 Single room
Underfloor heating or radiators – Wired room
thermostat
Setup
A Main leaving water temperature zone
B One single room
a User interface used as room thermostat
b Control box
c Backup heater (option)
▪ The under floor heating or radiators are directly connected to the
outdoor unit – or to the backup heater, if there is one.
▪ The room temperature is controlled by the user interface, that is
connected to control box RKCB07CAV3. Possible installations:
▪ Control box RKCB07CAV3 is installed in the room and the user
interface is used as room thermostat.
▪ Control box RKCB07CAV3 is installed indoors, close to the
outdoor unit + user interface installed in the room and used as
room thermostat.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
Benefits
▪ Cost effective. You do NOT need an additional external room
thermostat.
▪ Highest comfort and efficiency. The smart room thermostat
functionality can decrease or increase the desired leaving water
temperature based on the actual room temperature (modulation).
This results in:
▪ Stable room temperature matching the desired temperature
(higher comfort)
▪ Less ON/OFF cycles (more quiet, higher comfort and higher
efficiency)
▪ Lowest possible leaving water temperature (higher efficiency)
▪ Easy. You can easily set the desired room temperature via the
user interface:
▪ For your daily needs, you can use preset values and schedules.
▪ To deviate from your daily needs, you can temporarily overrule
the preset values and schedules, use the holiday mode…
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
0 (1 LWT zone): Main
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
13
5 Application guidelines
B
A
e
d
a
b
c
B
A
d
a
b
c
Underfloor heating or radiators – Wireless room
thermostat
Setup
A Main leaving water temperature zone
B One single room
a User interface
b Control box
c Backup heater (option)
d Receiver for wireless external room thermostat
e Wireless external room thermostat
▪ The under floor heating or radiators are directly connected to the
outdoor unit – or to the backup heater, if there is one.
▪ The room temperature is controlled by the wireless external room
thermostat (optional equipment RKRTR1).
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
External room thermostat for the
main zone:
▪ #: [A.2.2.E.5]
▪ Code: [C-05]
Benefits
▪ Wireless. The ROTEX external room thermostat is available in a
wireless version.
▪ Efficiency. Although the external room thermostat only sends ON/
OFF signals, it is specifically designed for the heatpump system.
▪ Comfort. In case of under floor heating, the wireless external
room thermostat prevents condensation on the floor during cooling
operation by measuring the room humidity.
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
0 (1 LWT zone): Main
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
Heatpump convectors
Setup
A Main leaving water temperature zone
B One single room
a User interface
b Control box
c Backup heater (option)
d Remote controller of the heatpump convectors
▪ The under floor heating or radiators are directly connected to the
outdoor unit – or to the backup heater, if there is one.
▪ The desired room temperature is set via the remote controller of
the heatpump convectors.
▪ The space heating/cooling demand signal is sent to one digital
input on control box RKCB07CAV3 (X2M/1 and X2M/2).
▪ The space operation mode is sent to the heatpump convectors by
one digital output on control box RKCB07CAV3 (X8M/6 and
X8M/7).
INFORMATION
When using multiple heat pump convectors, make sure
each one receives the infrared signal from the remote
controller of the heatpump convectors.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
External room thermostat for the
main zone:
▪ #: [A.2.2.E.5]
▪ Code: [C-05]
Benefits
▪ Cooling. The heat pump convector offers, besides heating
capacity, also excellent cooling capacity.
▪ Efficiency. Optimal energy efficiency because of the interlink
function.
▪ Stylish.
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
0 (1 LWT zone): Main
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
Installer reference guide
14
Combination: Underfloor heating + Heatpump
convectors
▪ Space heating is provided by:
▪ The underfloor heating
▪ The heatpump convectors
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5 Application guidelines
B
A
d
M1
a
b
c
T
B C
A
a
b
c
▪ Space cooling is provided by the heatpump convectors only. The
underfloor heating is shut off by the shut-off valve.
Setup
A Main leaving water temperature zone
B One single room
a User interface
b Control box
c Backup heater (option)
d Remote controller of the heatpump convectors
▪ The heat pump convectors are directly connected to the outdoor
unit – or to the backup heater, if there is one.
▪ A shut-off valve (field supply) is installed before the underfloor
heating to prevent condensation on the floor during cooling
operation.
▪ The desired room temperature is set via the remote controller of
the heatpump convectors.
▪ The space heating/cooling demand signal is sent to one digital
input on control box RKCB07CAV3 (X2M/1 and X2M/2)
▪ The space operation mode is sent by one digital output (X8M/6
and X8M/7) on control box RKCB07CAV3 to:
▪ The heatpump convectors
▪ The shut-off valve
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
▪ Code: [C-07]
Number of water temperature
0 (1 LWT zone): Main
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
External room thermostat for the
main zone:
▪ #: [A.2.2.E.5]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
Benefits
▪ Cooling. Heat pump convectors provide, besides heating
capacity, also excellent cooling capacity.
▪ Efficiency. Under floor heating has the best performance with
ROTEX HPSU.
▪ Comfort. The combination of the two heat emitter types provides:
▪ The excellent heating comfort of the underfloor heating
▪ The excellent cooling comfort of the heatpump convectors
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5.2.2 Multiple rooms – OneLWT zone
If only one leaving water temperature zone is needed because the
design leaving water temperature of all heat emitters is the same,
you do NOT need a mixing valve station (cost effective).
Example: If the heat pump system is used to heat up one floor
where all the rooms have the same heat emitters.
Underfloor heating or radiators – Thermostatic
valves
If you are heating up rooms with under floor heating or radiators, a
very common way is to control the temperature of the main room by
using a thermostat (this can either be the user interface connected to
control box RKCB07CAV3, or an external room thermostat), while
the other rooms are controlled by so-called thermostatic valves (field
supply), which open or close depending on the room temperature.
Setup
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface
b Control box
c Backup heater (option)
▪ The underfloor heating of the main room is directly connected to
the outdoor unit – or to the backup heater, if there is one.
▪ The room temperature of the main room is controlled by the user
interface used as thermostat.
▪ A thermostatic valve is installed before the under floor heating in
each of the other rooms.
INFORMATION
Mind situations where the main room can be heated by
another heating source. Example: Fireplaces.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
▪ Code: [C-07]
Number of water temperature
0 (1 LWT zone): Main
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
Benefits
▪ Cost effective.
▪ Easy. Same installation as for one room, but with thermostatic
valves.
Underfloor heating or radiators – Multiple external
room thermostats
Setup
Installer reference guide
15
5 Application guidelines
B C
A
e
a
e
d
M1 M2
b
c
B
A
d d
C
b
a
c
e
B C
A
d
M1
M1
b
a
c
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface
b Control box
c Backup heater (option)
d Bypass valve
e External room thermostat
▪ For each room, a shut-off valve (field supplied) is installed to avoid
leaving water supply when there is no heating or cooling demand.
▪ A bypass valve must be installed to make water recirculation
possible when all shut-off valves are closed. To guarantee reliable
operation, provide a minimum water flow as described in table "To
check the water volume and flow rate" in "6.3 Preparing water
piping"on page26.
▪ The main user interface (connected to control box RKCB07CAV3)
decides the space operation mode. Mind that the space operation
mode of the additional user interfaces (used as room thermostat)
must be set to match that of the main user interface.
▪ The room thermostats are connected to the shut-off valves, and
do NOT have to be connected to the outdoor unit. The outdoor
unit will supply leaving water all the time, with the possibility to
program a leaving water schedule.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (LWT control): Unit operation is
decided based on the leaving
water temperature.
0 (1 LWT zone): Main
C Room 2
a User interface
b Control box
c Backup heater (option)
d Remote controller of the heatpump convectors
▪ The desired room temperature is set via the remote controller of
the heatpump convectors.
▪ The main user interface (connected to control box RKCB07CAV3)
decides the space operation mode.
▪ The heating demand signals of each heat pump convector are
connected in parallel to the digital input on control box
RKCB07CAV3 (X2M/1 and X2M/2). The outdoor unit will only
supply leaving water temperature when there is an actual
demand.
INFORMATION
To increase comfort and performance, ROTEX
recommends to install the valve kit option EKVKHPC on
each heatpump convector.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
▪ Code: [C-07]
Number of water temperature
0 (1 LWT zone): Main
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
Benefits
Compared with heatpump convectors for one room:
▪ Comfort. You can set the desired room temperature, including
schedules, for each room via the remote controller of the
heatpump convectors.
Combination: Underfloor heating + Heatpump
convectors
Setup
Benefits
Compared with underfloor heating or radiators for one room:
▪ Comfort. You can set the desired room temperature, including
schedules, for each room via the room thermostats.
Heatpump convectors
Setup
A Main leaving water temperature zone
B Room 1
Installer reference guide
16
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface
b Control box
c Backup heater (option)
d External room thermostat
e Remote controller of the heatpump convectors
▪ For each room with heat pump convectors: The heat pump
convectors are directly connected to the outdoor unit – or to the
backup heater, if there is one.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5 Application guidelines
B
A
f f
C
E
D
a
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d
b
c
▪ For each room with underfloor heating: Two shut-off valves (field
supply) are installed before the underfloor heating:
▪ A shut-off valve to prevent hot water supply when the room has
no heating demand
▪ A shut-off valve to prevent condensation on the floor during
cooling operation of the rooms with heatpump convectors.
▪ For each room with heat pump convectors: The desired room
temperature is set via the remote controller of the heat pump
convectors.
▪ For each room with under floor heating: The desired room
temperature is set via the external room thermostat (wired or
wireless).
▪ The main user interface (connected to control box RKCB07CAV3)
decides the space operation mode. Mind that the operation mode
of each external room thermostat and heat pump convector
remote controller must be set to match that of the main user
interface.
INFORMATION
To increase comfort and performance, ROTEX
recommends to install the valve kit option EKVKHPC on
each heatpump convector.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
0 (LWT control): Unit operation is
decided based on the leaving
water temperature.
▪ Code: [C-07]
Number of water temperature
0 (1 LWT zone): Main
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
5.2.3 Multiple rooms – TwoLWT zones
If the heat emitters selected for each room are designed for different
leaving water temperatures, you can use different leaving water
temperature zones (maximum 2).
In this document:
▪ Main zone = Zone with the lowest design temperature in heating,
and the highest design temperature in cooling
▪ Additional zone = The other zone
NOTICE
If there are two leaving water temperature zones, and an
external room thermostat is used, then cooling operation is
NOT possible.
CAUTION
When there is more than one leaving water zone, you must
ALWAYS install a mixing valve station in the main zone to
decrease (in heating)/increase (in cooling) the leaving
water temperature when the additional zone has demand.
Typical example:
Room (zone) Heat emitters: Design
Living room (main zone) Underfloor heating: 35°C
Bed rooms (additional zone) Heatpump convectors: 45°C
temperature
Setup
A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3
a User interface
b Control box
c Backup heater (option)
d Pressure-regulating valve
e Mixing valve station
f Remote controller of the heatpump convectors
INFORMATION
A pressure regulating valve should be implemented before
the mixing valve station. This is to guarantee the correct
water flow balance between the main leaving water
temperature zone and the additional leaving water
temperature zone in relation to the required capacity of
both water temperature zones.
▪ For the main zone:
▪ A mixing valve station is installed before the underfloor heating.
▪ The room temperature is controlled by the user interface, which
is used as room thermostat.
NOTICE
ROTEX is NOT responsible for the operation of the mixing
valve station pump. It is the responsibility of the installer to
guarantee pump operation.
▪ For the additional zone:
▪ The heat pump convectors are directly connected to the
outdoor unit – or to the backup heater, if there is one.
▪ The desired room temperature is set via the remote controller of
the heatpump convectors for each room.
▪ The heating or cooling demand signals of each heat pump
convector are connected in parallel to the digital input on control
box RKCB07CAV3 (X2M/1 and X2M/2). The outdoor unit will
only supply the desired additional leaving water temperature
when there is an actual demand.
▪ The main user interface (connected to control box RKCB07CAV3)
decides the space operation mode. Mind that the operation mode
of each heat pump convector remote controller must be set to
match that of the main user interface.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
17
5 Application guidelines
FHL1
FHL2
FHL3
M
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Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Note:
▪ Main room = user interface
used as room thermostat
functionality
▪ Other rooms = external room
thermostat functionality
Number of water temperature
zones:
1 (2 LWT zones): Main +
additional
▪ #: [A.2.1.8]
▪ Code: [7-02]
In case of heatpump convectors:
External room thermostat for the
additional zone:
▪ #: [A.2.2.5]
▪ Code: [C-06]
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition. No separation between
heating or cooling demand.
Shut‑off valve If the main zone must be shut off
during cooling mode to prevent
condensation on the floor, set it
accordingly.
At the mixing valve station Set the desired main leaving
water temperature for heating
and/or cooling.
INFORMATION
▪ During heating operation of the heat pump, the
heat pump operates to achieve the desired
temperature set via the user interface. When weatherdependent operation is active, the water temperature is
determined automatically depending on the outdoor
temperature.
▪ During heating operation of the auxiliary boiler, the
auxiliary boiler operates to achieve the desired water
temperature set via the auxiliary boiler controller.
Setup
▪ Integrate the boiler as follows:
Benefits
▪ Comfort.
▪ The smart room thermostat functionality can decrease or
increase the desired leaving water temperature based on the
actual room temperature (modulation).
▪ The combination of the two heat emitter systems provides the
excellent heating comfort of the under floor heating, and the
excellent cooling comfort of the heatpump convectors.
▪ Efficiency.
▪ Depending on the demand, the outdoor unit supplies different
leaving water temperature matching the design temperature of
the different heat emitters.
▪ Under floor heating has the best performance with ROTEX
HPSU.
5.3 Setting up an auxiliary heat source for space heating
▪ Space heating can be done by:
▪ The outdoor unit
▪ An auxiliary boiler (field supply) connected to the system
▪ When the room thermostat requests heating, the outdoor unit or
the auxiliary boiler starts operating depending on the outdoor
temperature (status of the changeover to external heat source).
When the permission is given to the auxiliary boiler, the space
heating by the outdoor unit is turned OFF.
▪ Bivalent operation is only possible for space heating, NOT for
domestic hot water production. Domestic hot water is always
produced by the DHW tank connected to the outdoor unit.
INFORMATION
For bivalent operation to be possible, the system requires
control box RK2CB07CAV3.
Installer reference guide
18
a Outdoor unit
b Heat exchanger
c Pump
d Shut‑off valve
e Backup heater (option)
f Control box
g User interface
h Option box
i Motorised 3‑way valve (delivered with the domestic hot
water tank)
j Non‑return valve (field supply)
k Shut‑off valve (field supply)
l Collector (field supply)
m Auxiliary boiler (field supply)
n Aquastat valve (field supply)
o Domestic hot water tank (option)
p Heat exchanger coil
FHL1...3 Underfloor heating
NOTICE
▪ Make sure the auxiliary boiler and its integration in the
system complies with applicable legislation.
▪ ROTEX is NOT responsible for incorrect or unsafe
situations in the auxiliary boiler system.
▪ Make sure the return water to the heat pump does NOT exceed
55°C. To do so:
▪ Set the desired water temperature via the auxiliary boiler
controller to maximum 55°C.
▪ Install an aquastat valve in the return water flow of the
heatpump.
▪ Set the aquastat valve to close above 55°C and to open below
55°C.
▪ Install non-return valves.
▪ Make sure to only have one expansion vessel in the water circuit.
An expansion vessel is already pre-mounted in the outdoor unit.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5 Application guidelines
L
N
H
Com
A
K2AK1A
X2M
B
TI
K2AK1A
Outdoor/Auto/Boiler
1 4 X Y
Control box
FHL1
FHL2
FHL3
M
a b c
d
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▪ Install control box RKCB07CAV3 and option box RK2CB07CAV3.
▪ Connect X8M/3 and X8M/4 (changeover to external heat source)
▪ To setup the heat emitters, see "5.2Setting up the space heating/
Configuration
Via the user interface (quick wizard):
▪ Set the use of a bivalent system as external heat source.
▪ Set the bivalent temperature and hysteresis.
Changeover to external heat source decided by an auxiliary
contact
▪ Only possible in external room thermostat control AND one
▪ The auxiliary contact can be:
▪ Setup: Connect the following field wiring:
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
on option box RK2CB07CAV3 to the auxiliary boiler thermostat.
cooling system"on page13.
NOTICE
▪ Make sure the bivalent hysteresis has enough
differential to prevent frequent changeover between
outdoor unit and auxiliary boiler.
▪ Because the outdoor temperature is measured by the
outdoor unit air thermistor, install the outdoor unit in the
shadow so that it is NOT influenced or turned ON/OFF
by direct sunlight.
▪ Frequent changeover may cause corrosion of the
auxiliary boiler. Contact the manufacturer of the
auxiliary boiler for more information.
leaving water temperature zone (see "5.2 Setting up the space
heating/cooling system"on page13).
▪ An outdoor temperature thermostat
▪ An electricity tariff contact
▪ A manually operated contact
▪ …
BTIBoiler thermostat input
A Auxiliary contact (normal closed)
H Heating demand room thermostat (optional)
K1A Auxiliary relay for activation of outdoor unit (field supply)
K2A Auxiliary relay for activation of boiler (field supply)
Outdoor Outdoor unit
Auto Automatic
Boiler Boiler
Control box Control box
NOTICE
▪ Make sure the auxiliary contact has enough differential
or time delay to prevent frequent changeover between
outdoor unit and auxiliary boiler.
▪ If the auxiliary contact is an outdoor temperature
thermostat, install the thermostat in the shadow so that
it is NOT influenced or turned ON/OFF by direct
sunlight.
▪ Frequent changeover may cause corrosion of the
auxiliary boiler. Contact the manufacturer of the
auxiliary boiler for more information.
5.4 Setting up the domestic hot water tank
5.4.1 System layout – Standalone DHW tank
a Outdoor unit
b Heat exchanger
c Pump
d Shut‑off valve
e Backup heater (option)
f Control box
g User interface
h Motorised 3‑way valve
i Domestic hot water tank
j Heat exchanger coil
k Collector (field supply)
FHL1...3 Underfloor heating
5.4.2 Selecting the volume and desired temperature for the DHW tank
People experience water as hot when its temperature is 40°C.
Therefore, the DHW consumption is always expressed as equivalent
hot water volume at 40°C. However, you can set the DHW tank
temperature at a higher temperature (example: 53°C), which is then
mixed with cold water (example: 15°C).
Selecting the volume and desired temperature for the DHW tank
consists of:
1 Determining the DHW consumption (equivalent hot water
volume at 40°C).
2 Determining the volume and desired temperature for the DHW
tank.
Possible DHW tank volumes
Type Possible volumes
Standalone DHW tank ▪ 300l
▪ 500l
Energy saving tips
▪ If the DHW consumption differs from day to day, you can program
a weekly schedule with different desired DHW tank temperatures
for each day.
▪ The lower the desired DHW tank temperature, the more cost
effective. By selecting a larger DHW tank, you can lower the
desired DHW tank temperature.
▪ The heatpump itself can produce domestic hot water of maximum
55°C (50°C if outdoor temperature is low). The electrical
resistance integrated in the heat pump can increase this
temperature. However, this consumes more energy. ROTEX
recommends to set the desired DHW tank temperature below
55°C to avoid using the electrical resistance.
Installer reference guide
19
5 Application guidelines
c
e
a
f
d
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▪ The higher the outdoor temperature, the better the performance of
the heatpump.
▪ If energy prices are the same during the day and the night,
ROTEX recommends to heat up the DHW tank during the day.
▪ If energy prices are lower during the night, ROTEX
recommends to heat up the DHW tank during the night.
▪ When the heatpump produces domestic hot water, it cannot heat
up a space. When you need domestic hot water and space
heating at the same, ROTEX recommends to produce the
domestic hot water during the night when there is lower space
heating demand.
Determining the DHW consumption
Answer the following questions and calculate the DHW consumption
(equivalent hot water volume at 40°C) using the typical water
volumes:
Question Typical water volume
How many showers are needed
per day?
How many baths are needed per
1shower = 10min×10l/min =
100l
1bath = 150l
day?
How much water is needed at the
1sink = 2min×5l/min = 10l
kitchen sink per day?
Are there any other domestic hot
—
water needs?
Example: If the DHW consumption of a family (4 persons) per day is
as follows:
▪ 3 showers
▪ 1 bath
▪ 3 sink volumes
Then the DHW consumption = (3×100l)+(1×150l)+(3×10l)=480l
Determining the volume and desired temperature for the DHW
tank
Formula Example
V1=V2+V2×(T2−40)/(40−T1) If:
▪ V2=180l
▪ T2=54°C
▪ T1=15°C
Then V1=280l
V2=V1×(40−T1)/(T2−T1) If:
▪ V1=480l
▪ T2=54°C
▪ T1=15°C
Then V2=307l
V1DHW consumption (equivalent hot water volume at 40°C)
V2Required DHW tank volume if only heated once
T2DHW tank temperature
T1Cold water temperature
5.4.3 Setup and configuration – DHW tank
▪ For large DHW consumptions, you can heat up the DHW tank
several times during the day.
▪ To heat up the DHW tank to the desired DHW tank temperature,
you can use the following energy sources:
▪ Thermodynamic cycle of the heatpump
▪ Electrical booster heater
Installer reference guide
20
▪ For more information about:
▪ Optimizing the energy consumption for producing domestic hot
water, see "8Configuration"on page51.
▪ Connecting the electrical wiring of the domestic hot water tank
to control box RKCB07CAV3, see the installation manual of the
domestic hot water tank.
▪ Connecting the water piping of the domestic hot water tank to
the outdoor unit, see the installation manual of the domestic hot
water tank.
5.4.4 DHW pump for instant hot water
Setup
a Outdoor unit
b Domestic hot water tank
c Domestic hot water pump
d Control box
e Shower
f Cold water
g Domestic hot water OUT
h Recirculation connection
▪ By connecting a DHW pump, instant hot water can be available at
the tap.
▪ The DHW pump and the installation are field supply and the
responsibility of the installer.
▪ For more information about the recirculation connection, see
"7.8.8To connect the domestic hot water pump"on page45, and
the installation manual of the domestic hot water tank.
Configuration
▪ For more information, see "8Configuration"on page51.
▪ You can program a schedule to control the DHW pump via the
user interface. For more information, see the user reference
guide.
5.4.5 DHW pump for disinfection
Setup
a Outdoor unit
b Domestic hot water tank
c Domestic hot water pump (field supply)
d Heater element (field supply)
e Non‑return valve (field supply)
f Shower (field supply)
g Cold water
h Control box
i Domestic hot water OUT
j Recirculation connection
▪ The DHW pump is field-supplied and its installation is the
responsibility of the installer.
▪ The temperature of the DHW tank can be set to maximum 70°C. If
the applicable legislation requires a higher temperature for
disinfection, you can connect a DHW pump and heater element as
shown above.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
5 Application guidelines
▪ If applicable legislation requires disinfection of the water piping
until the tapping point, you can connect a DHW pump and heater
element (if needed) as shown above.
▪ For more information about the recirculation connection, see
"7.8.8To connect the domestic hot water pump"on page45, and
the installation manual of the domestic hot water tank.
Configuration
The outdoor unit can control DHW pump operation. For more
information, see "8Configuration"on page51.
5.5 Setting up the energy metering
▪ Via the user interface, you can read out the following energy data:
▪ Produced heat
▪ Consumed energy
▪ You can read out the energy data:
▪ For space heating
▪ For space cooling
▪ For domestic hot water production
▪ You can read out the energy data:
▪ Per month
▪ Per year
INFORMATION
The calculated produced heat and consumed energy are
an estimation, the accuracy cannot be guaranteed.
INFORMATION
You cannot combine calculating the consumed energy
(example: for backup heater) and measuring the
consumed energy (example: for outdoor unit). If you do so,
the energy data will be invalid.
Calculating the consumed energy
▪ The consumed energy is calculated internally based on:
▪ The actual power input of the outdoor unit
▪ The set capacity of the booster heater and the optional backup
heater
▪ The voltage
▪ Setup and configuration: To get accurate energy data, measure
the capacity (resistance measurement) and set the capacity via
the user interface for:
▪ The optional backup heater (step1 and step2)
▪ The booster heater
Measuring the consumed energy
▪ Preferred method because of higher accuracy.
▪ Setup and configuration:
▪ Requires option box RK2CB07CAV3.
▪ Requires external power meters.
▪ For the specifications of each type of meter, see "14Technical
data"on page90.
▪ When using electrical power meters, set the number of pulses/
kWh for each power meter via the user interface.
5.5.1 Produced heat
INFORMATION
The sensors used to calculate the produced heat are
calibrated automatically.
INFORMATION
If glycol is present in the system ([E‑0D]=1]), then the
produced heat will NOT be calculated, nor will it be
displayed on the user interface.
▪ Applicable for all models.
▪ The produced heat is calculated internally based on:
▪ The leaving and entering water temperature
▪ The flow rate
▪ The power consumption of the booster heater (if applicable) in
the domestic hot water tank
▪ Setup and configuration:
▪ No additional equipment needed.
▪ Only in case a booster heater is present in the system, measure
its capacity (resistance measurement) and set the capacity via
the user interface. Example: If you measure a booster heater
resistance of 17.1Ω, the capacity of the heater at 230 V is
3100W.
5.5.2 Consumed energy
You can use the following methods to determine the consumed
energy:
▪ Calculating
▪ Measuring
INFORMATION
When measuring the electrical power consumption, make
sure ALL power input of the system is covered by the
electrical power meters.
5.5.3 Normal kWh rate power supply
General rule
One power meter that covers the entire system is sufficient.
Setup
▪ Install control box RKCB07CAV3 and option box RK2CB07CAV3.
▪ Connect the power meter to X2M/7 and X2M/8 of option box
RK2CB07CAV3.
Power meter type
In case of… Use a… power meter
Backup heater supplied from a
single-phase grid (i.e. the backup
heater model is *3V or *9W
connected to a single-phase grid)
In other cases (i.e. a *9W backup
heater model connected to a
three-phase grid)
Single-phase
Three-phase
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
21
5 Application guidelines
b
5
8
0
1
5
0
0
0
c c
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f
A B C D E
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b
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Example
Single-phase power meter Three-phase power meter
A Outdoor unit
B Control box
C DHW tank
D Option box
E Backup heater kit
a Electrical cabinet (L1/N)
b Power meter (L1/N)
c Fuse (L1/N)
d Outdoor unit (L1/N)
e Control box (L1/N)
f Booster heater (L1/N)
g Option box (L1/N)
h Backup heater (L1/N)
A Outdoor unit
B Control box
C DHW tank
D Option box
E Backup heater kit
a Electrical cabinet (L1/L2/L3/N)
b Power meter (L1/L2/L3/N)
c Fuse (L1/N)
d Fuse (L1/L2/L3/N)
e Outdoor unit (L1/N)
f Control box (L1/N)
g Booster heater (L1/N)
h Option box (L1/N)
i Backup heater (L1/L2/L3/N)
Exception
▪ You can use a second power meter if:
▪ The power range of one meter is insufficient.
▪ The electrical meter cannot easily be installed in the electrical
cabinet.
▪ 230 V and 400 V three-phase grids are combined (very
uncommon), because of technical limitations of power meters.
▪ Connection and setup:
▪ Connect the second power meter to X2M/9 and X2M/10 of
option box RK2CB07CAV3.
▪ In the software the power consumption data of both meters is
added so you do NOT have to set which meter covers which
power consumption. You only need to set the number of pulses
of each power meter.
▪ See "5.5.4 Preferential kWh rate power supply" on page 22 for
an example with two power meters.
5.5.4 Preferential kWh rate power supply
General rule
▪ Power meter1: Measures the refrigerant part of the outdoor unit.
▪ Power meter 2: Measures the rest (i.e. the hydro part of the
outdoor unit, control box RKCB07CAV3, option box
RK2CB07CAV3, the backup heater kit, and the optional booster
Setup
▪ Connect power meter 1 to X2M/7 and X2M/8 of option box
heater).
RK2CB07CAV3.
▪ Connect power meter 2 to X2M/9 and X2M/10 of option box
RK2CB07CAV3.
Power meter types
▪ Power meter1: Single-phase power meter.
▪ Power meter2:
▪ In case of a single-phase backup heater configuration, use a
single-phase power meter.
▪ In other cases, use a three-phase power meter.
Example
Three-phase backup heater:
A Outdoor unit
B Control box
C Domestic hot water tank
D Option box
E Backup heater kit
a Electrical cabinet (L1/N): Preferential kWh rate power
supply
b Electrical cabinet (L1/L2/L3/N): Normal kWh rate power
supply
c Power meter (L1/N)
d Power meter (L1/L2/L3/N)
e Fuse (L1/N)
f Fuse (L1/L2/L3/N)
g Outdoor unit (L1/N)
h Control box (L1/N)
i Booster heater (L1/N)
j Option box (L1/N)
k Backup heater (L1/L2/L3/N)
5.6 Setting up the power consumption control
▪ The power consumption control:
▪ Allows you to limit the power consumption of the entire system
(sum of the outdoor unit, control box RKCB07CAV3, option box
RK2CB07CAV3, the backup heater kit, and the optional booster
heater).
▪ Configuration: Set the power limitation level and how it has to
be achieved via the user interface.
▪ The power limitation level can be expressed as:
▪ Maximum running current (inA)
▪ Maximum power input (inkW)
▪ The power limitation level can be activated:
▪ Permanently
▪ By digital inputs
5.6.1 Permanent power limitation
Permanent power limitation is useful to assure a maximum power or
current input of the system. In some countries, legislation limits the
maximum power consumption for space heating and DHW
production.
Installer reference guide
22
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
P
i
t
DI
a
b
PiPower input
X2M
A B C D E
F
a
b c
P
i
t
DI4
DI3
DI1
a
b
t Time
DI Digital input (power limitation level)
a Power limitation active
b Actual power input
Setup and configuration
▪ No additional equipment needed.
▪ Set the power consumption control settings in [A.6.3.1] via the
user interface (for the description of all settings, see
"8Configuration"on page51):
▪ Select full time limitation mode
▪ Select the type of limitation (power in kW or current in A)
▪ Set the desired power limitation level
NOTICE
Mind the following guidelines when selecting the desired
power limitation level:
▪ Set a minimum power consumption of ±3.6 kW to
guarantee defrost operation. Otherwise, if defrosting is
interrupted several times, the heat exchanger will
freeze up.
▪ Set a minimum power consumption of ±3 kW to
guarantee space heating and DHW production by
allowing at least one electrical heater (backup heater
step1 or booster heater).
5.6.2 Power limitation activated by digital inputs
Power limitation is also useful in combination with an energy
management system.
The power or current of the entire ROTEX system is limited
dynamically by digital inputs (maximum four steps). Each power
limitation level is set via the user interface by limiting one of the
following:
▪ Current (in A)
▪ Power input (in kW)
The energy management system (field supply) decides the activation
of a certain power limitation level. Example: To limit the maximum
power of the entire house (lighting, domestic appliances, space
heating…).
5 Application guidelines
b Backup heater
c Booster heater
PiPower input
t Time
DI Digital inputs (power limitation levels)
a Power limitation active
b Actual power input
Setup
▪ Install control box RKCB07CAV3 and option box RK2CB07CAV3.
▪ Maximum four digital inputs are used to activate the
corresponding power limitation level:
▪ DI1 = weakest limitation (highest energy consumption)
▪ DI4 = strongest limitation (lowest energy consumption)
▪ For the specifications of the digital inputs, and for where to
connect them, refer to the wiring diagram.
Configuration
Set the power consumption control settings in [A.6.3.1] via the user
interface (for the description of all settings, see "8Configuration"on
page51):
▪ Select activation by digital inputs.
▪ Select the type of limitation (power in kW or current in A).
▪ Set the desired power limitation level corresponding to each digital
input.
INFORMATION
In case more than 1 digital input is closed (at the same
time), the digital input priority is fixed: DI4 priority>…>DI1.
5.6.3 Power limitation process
The outdoor unit has better efficiency than the electrical heaters.
Therefore, the electrical heaters are limited and turned OFF first.
The system limits power consumption in the following order:
1 Limits certain electrical heaters.
If… has priority Then set the heater priority
via the user interface to…
Domestic hot water production Booster heater.
Result: The backup heater will
be turned OFF first.
Space heating Backup heater.
Result: The booster heater will
be turned OFF first.
A Outdoor unit
B Control box
C Option box
D Backup heater kit
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E Domestic hot water tank
F Energy management system
a Power limitation activation (4 digital inputs)
2 Turns OFF all electrical heaters.
3 Limits the outdoor unit.
4 Turns OFF the outdoor unit.
Example
If the configuration is as follows:
▪ Power limitation level does NOT allow operation of both booster
heater and backup heater (step1 and step2).
▪ Heater priority = Booster heater.
Then power consumption is limited as follows:
Installer reference guide
23
6 Preparation
P
h
C
e
a
b
c
d
e
A B C
≤1200
>250/400
>250/400
>250
>350
>350
(mm)(mm)
a
b
b
a
6.2 Preparing installation site
Do NOT install the unit in places often used as work place. In case
of construction works (e.g. grinding works) where a lot of dust is
created, the unit must be covered.
Choose the installation location with sufficient place for carrying the
unit in and out of the site.
PhProduced heat
CeConsumed energy
A Outdoor unit
B Booster heater
C Backup heater
a Limited outdoor unit operation
b Full outdoor unit operation
c Booster heater turned ON
d Backup heater step1 turned ON
e Backup heater step2 turned ON
5.7 Setting up an external temperature sensor
You can connect one external temperature sensor. It can measure
the outdoor ambient temperature. ROTEX recommends to use an
external temperature sensor in the following cases:
Outdoor ambient temperature
▪ In the outdoor unit, the outdoor ambient temperature is measured.
Therefore, the outdoor unit must be installed on a location:
▪ At the north side of the house or at the side of the house where
the most heat emitters are located
▪ That is NOT exposed to direct sunlight
▪ If this is NOT possible, ROTEX recommends to connect a remote
outdoor sensor (option EKRSCA1).
▪ Setup: For installation instructions, see the installation manual of
the remote outdoor sensor and the addendum book for optional
equipment.
▪ Configuration: Select outdoor sensor [A.2.2.B].
▪ During suspend (see "8Configuration" on page 51), the outdoor
unit is turned down to reduce the standby energy losses. As a
result, the outdoor ambient temperature is NOT read out.
▪ If the desired leaving water temperature is weather dependent, the
full time outdoor temperature measurement is important. This is
another reason to install the optional outdoor ambient temperature
sensor.
INFORMATION
The external outdoor ambient sensor data (either averaged
or instantaneous) is used in the weather-dependent control
curves and in the automatic heating/cooling changeover
logic. To protect the outdoor unit, the internal sensor of the
outdoor unit is always used.
6 Preparation
6.1 Overview: Preparation
This chapter describes what you have to do and know before going
on-site.
It contains information about:
▪ Preparing the installation site
▪ Preparing the water piping
▪ Preparing the electrical wiring
Installer reference guide
24
6.2.1 Installation site requirements of the outdoor unit
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
Mind the following spacing guidelines:
a Air outlet
b Air inlet
INFORMATION
If shut-off valves are installed on the unit, provide a
minimum space of 400mm at the air inlet side. If shut‑off
valves are NOT installed on the unit, provide a minimum
space of 250mm.
If the system contains a domestic hot water tank, meet the following
requirements:
Maximum allowable distance
between outdoor unit and …
domestic hot water tank 10m
3‑way valve 10m
See "14.2 Dimensions and service space" on page 90 for more
detailed information about spacing guidelines.
NOTICE
▪ Do NOT stack the units on each other.
▪ Do NOT hang the unit on a ceiling.
Strong winds (≥18 km/h) blowing against the outdoor unit’s air outlet
causes short circuit (suction of discharge air). This may result in:
▪ deterioration of the operational capacity;
▪ frequent frost acceleration in heating operation;
▪ disruption of operation due to decrease of low pressure or
increase of high pressure;
▪ a broken fan (if a strong wind blows continuously on the fan, it
may start rotating very fast, until it breaks).
It is recommended to install a baffle plate when the air outlet is
exposed to wind.
It is recommended to install the outdoor unit with the air inlet facing
the wall and NOT directly exposed to the wind.
Do NOT install the unit in the following places:
▪ Sound sensitive areas (e.g. near a bedroom and the like), so that
the operation noise will cause no trouble.
▪ In places where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
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It is NOT recommended to install the unit in the following places
b
c
a
a
b
c
d
c
d
c
a
b
c
d
100
50
50
600
50
50
(mm)
because it may shorten the life of the unit:
▪ Where the voltage fluctuates a lot
▪ In vehicles or vessels
▪ Where acidic or alkaline vapour is present
Seaside installation. Make sure the outdoor unit is NOT directly
exposed to sea winds. This is to prevent corrosion caused by high
levels of salt in the air, which might shorten the life of the unit.
Install the outdoor unit away from direct sea winds.
Example: Behind the building.
If the outdoor unit is exposed to direct sea winds, install a
windbreaker.
▪ Height of windbreaker≥1.5×height of outdoor unit
▪ Mind the service space requirements when installing the
windbreaker.
6 Preparation
a Snow cover or shed
b Pedestal
c Prevailing wind direction
d Air outlet
▪ In any case, provide at least 300mm of free space below the unit.
Additionally, make sure the unit is positioned at least 100 mm
above the maximum expected level of snow. See "7.3 Mounting
the outdoor unit"on page33 for more details.
In heavy snowfall areas it is very important to select an installation
site where the snow will NOT affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is NOT affected by
the snow. If necessary, install a snow cover or shed and a pedestal.
a Sea wind
b Building
c Outdoor unit
d Windbreaker
The outdoor unit is designed for outdoor installation only, and for
ambient temperatures ranging 10~43°C in cooling mode, –25~25°C
in space heating mode, and –25~35°C in domestic hot water
operation mode.
6.2.2 Additional installation site requirements of the outdoor unit in cold climates
Protect the outdoor unit against direct snowfall and take care that the
outdoor unit is NEVER snowed up.
6.2.3 Installation site requirements of the control box
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Mind the measurement guidelines:
Maximum distance between control box and
outdoor unit
Maximum distance between control box and backup
heater kit
Maximum distance between control box and
domestic hot water tank
▪ Mind the following spacing installation guidelines:
20m
10m
10m
▪ The control box is designed to be wall-mounted in indoor locations
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
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only. Make sure the installation surface is a flat and vertical noncombustible wall.
▪ The control box is designed to operate in ambient temperatures
ranging from 5~35°C.
Do NOT install the control box in the following places:
Installer reference guide
25
6 Preparation
100
50
50
600
50
50
(mm)
>50 >50
>200
>500
>350
▪ Sound sensitive areas (e.g. near a bedroom and the like), so that
the operation noise will cause no trouble.
▪ In places with high humidity (max. RH=85%), for example a
bathroom.
▪ In places where frost is possible.
6.2.4 Installation site requirements of the option box
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Mind the measurement guidelines:
Maximum distance between the option box and
control box RKCB07CAV3
▪ Mind the following spacing installation guidelines:
▪ The option box is designed to be wall-mounted in indoor locations
only. Make sure the installation surface is a flat and vertical noncombustible wall.
▪ The option box is designed to operate in ambient temperatures
ranging from 5~35°C.
Do NOT install the option box in the following places:
▪ Sound sensitive areas (e.g. near a bedroom and the like), so that
the operation noise will cause no trouble.
▪ In places with high humidity (max. RH=85%), for example a
bathroom.
▪ In places where frost is possible.
6.2.5 Installation site requirements of the backup heater
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Mind the measurement guidelines:
Maximum distance between the backup heater and
the outdoor unit
▪ Mind the following spacing installation guidelines:
3m
INFORMATION
If the backup heater is installed in a reversible system
(RBLQ05+07CAV3) and valve kit EKMBHBP1 is part of the
system, it may be required to provide more space under
the backup heater than indicated above. For more
information, refer to "7.7.5 About the valve kit" on
page38.
▪ The backup heater is designed to be wall-mounted in indoor
locations only. Make sure the installation surface is a flat and
vertical non-combustible wall.
▪ The backup heater is designed to operate in ambient
temperatures ranging from 5~30°C.
Do NOT install the backup heater in the following places:
▪ Sound sensitive areas (e.g. near a bedroom and the like), so that
the operation noise will cause no trouble.
▪ In places with high humidity (max. RH=85%), for example a
bathroom.
▪ In places where frost is possible.
6.3 Preparing water piping
6.3.1 Water circuit requirements
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Connecting piping – Legislation. Make all piping connections in
accordance with the applicable legislation and the instructions in
the "Installation" chapter, respecting the water inlet and outlet.
▪ Connecting piping – Force. Do NOT use excessive force when
connecting the piping. Deformation of the piping can cause
malfunctioning of the unit.
10m
▪ Connecting piping – Tools. Only use appropriate tooling to
handle brass, which is a soft material. If NOT, pipes will get
damaged.
▪ Connecting piping – Air, moisture, dust. If air, moisture or dust
gets into the circuit, problems may occur. To prevent this:
▪ Only use clean pipes
▪ Hold the pipe end downwards when removing burrs.
▪ Cover the pipe end when inserting it through a wall, to prevent
dust and/or particles entering the pipe.
▪ Use a decent thread sealant to seal connections.
NOTICE
If glycol is present in the system, make sure the thread
sealant used is resistant to glycol.
Installer reference guide
26
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
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6 Preparation
M
FCU1
FCU2
FCU3
h
M
FHL1
FHL2
FHL3
i
k j
f
g
h
h
h
65°C
89°C
d
d
a eb c
c
d
a b
▪ Closed circuit. Use the outdoor unit ONLY in a closed water
system. Using the system in an open water system will lead to
excessive corrosion.
▪ Piping length. It is recommended to avoid long runs of piping
between the domestic hot water tank and the hot water end point
(shower, bath,…) and to avoid dead ends.
▪ Piping diameter. Select the water piping diameter in relation to
the required water flow and the available external static pressure
of the pump. See "14 Technical data"on page90 for the external
static pressure curves of the outdoor unit.
▪ Water flow. It is required to guarantee a minimum flow of 12l/min.
When the flow is lower, the system will stop operation and display
error 7H.
Minimum required flow rate
05+07 models 12l/min
▪ Field supply components – Water and glycol. Only use
materials that are compatible with the water (and, if applicable,
glycol) used in the system, and with the materials used in the
outdoor unit.
▪ Field supply components – Water pressure and temperature.
Check that all components in the field piping can withstand the
water pressure and water temperature.
▪ Water pressure. The maximum water pressure is 3bar. Provide
adequate safeguards in the water circuit to ensure that the
maximum pressure is NOT exceeded.
▪ Water temperature. All installed piping and piping accessories
(valve, connections,…) MUST withstand the following
temperatures:
INFORMATION
The following illustration is an example and might NOT
match your system layout.
a Outdoor unit
b Heat exchanger
c Pump
d Shut‑off valve
e Backup heater
f Motorised 3‑way valve (supplied with the domestic hot
g Motorised 2‑way valve (field supply)
h Collector
i Domestic hot water tank
j Heat exchanger coil
k Booster heater
FCU1...3 Fan coil unit (optional) (field supply)
water tank)
FHL1...3 Floor heating loop (field supply)
▪ Drainage – Low points. Provide drain taps at all low points of the
system in order to allow complete drainage of the water circuit.
▪ Drainage – Pressure relief valve. Provide a proper drain for the
pressure relief valve to avoid water coming into contact with
electrical parts.
▪ Air vents. Provide air vents at all high points of the system, which
must also be easily accessible for servicing. The outdoor unit has
a manual air purge valve. The backup heater (option) has an
automatic air purge valve. Check that automatic air purge valves
are NOT tightened too much, so that the automatic release of air
from the water circuit is possible.
▪ Zn-coated parts. Never use Zn-coated parts in the water circuit.
Because the unit's internal water circuit uses copper piping,
excessive corrosion may occur.
▪ Non-brass metallic piping. When using non-brass metallic
piping, insulate the brass and non-brass properly so that they do
NOT make contact with each other. This to prevent galvanic
corrosion.
▪ Valve – Separating circuits. When using a 3-way valve in the
water circuit make sure that the domestic hot water circuit and the
floor heating circuit is fully separated.
▪ Valve – Change‑over time. When using a 2-way valve or a 3-way
valve in the water circuit, the maximum change-over time of the
valve must be 60seconds.
▪ Filter. It is strongly recommended to install an additional filter on
the heating water circuit. Especially to remove metallic particles
from foul heating piping, it is recommended to use a magnetic or
cyclone filter, which can remove small particles. Small particles
may damage the unit and will NOT be removed by the standard
filter of the heat pump system.
▪ Domestic hot water tank – Capacity. To avoid stagnation of
water, it is important that the storage capacity of the domestic hot
water tank meets the daily consumption of domestic hot water.
▪ Domestic hot water tank – After installation. Immediately after
installation, the domestic hot water tank must be flushed with fresh
water. This procedure must be repeated at least once a day the
first 5 consecutive days after installation.
▪ Domestic hot water tank – Standstills. In cases where during
longer periods of time there is no consumption of hot water, the
equipment MUST be flushed with fresh water before usage.
▪ Domestic hot water tank – Disinfection. For the disinfection
function of the domestic hot water tank, see "8.3.2Domestic hot
water control: advanced"on page66.
▪ Thermostatic mixing valves. In accordance with the applicable
legislation, it may be necessary to install thermostatic mixing
valves.
▪ Hygienic measures. The installation must be in compliance with
the applicable legislation and may require additional hygienic
installation measures.
▪ Recirculation pump. In accordance with the applicable
legislation, it may be required to connect a recirculation pump in
between the hot water end point and the recirculation connection
of the domestic hot water tank.
a Recirculation connection
b Hot water connection
c Shower
d Recirculation pump
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
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ROTEX HPSU low temperature monobloc
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Installer reference guide
27
6 Preparation
FHL1
FHL2
FHL3
M1
T1 T3T2
M2 M3
f g
d
d
a eb c
20
2,4
2,1
1,8
1,5
1,2
0,9
1
0,6
0,3
70 120 170
150105 185
220
270
A
B
6.3.2 Formula to calculate the expansion vessel pre-pressure
The pre-pressure (Pg) of the vessel depends on the installation
height difference (H):
Pg=0.3+(H/10) (bar)
6.3.3 To check the water volume and flow rate
The outdoor unit has an expansion vessel of 7 litre with a factory-set
pre-pressure of 1 bar
To make sure that the unit operates properly:
▪ You must check the minimum and maximum water volume.
▪ You might need to adjust the pre-pressure of the expansion
vessel.
Minimum water volume
If Then
The system contains a backup
heater
The system does NOT contain a
backup heater
(a) The internal water volume of the outdoor unit NOT
included.
INFORMATION
In critical processes, or in rooms with a high heat load,
extra water might be required.
NOTICE
When circulation in each space heating loop is controlled
by remotely controlled valves, it is important that the
minimum water volume is guaranteed, even if all of the
valves are closed.
The minimum water volume is
(a)
10l
The minimum water volume is
(a)
20l
A Pre-pressure (bar)
B Maximum water volume (l)
Water
Water + glycol
Example: Maximum water volume and expansion vessel prepressure
Installation
height
difference
(a)
≤185/105l
≤7m No pre-pressure
adjustment is required.
Water volume
(b)
Do the following:
▪ Decrease the pre-
>185/105l
(b)
pressure.
▪ Check if the water
volume does NOT
exceed the maximum
allowed water volume.
>7m Do the following:
▪ Increase the pre-
pressure.
▪ Check if the water
volume does NOT
exceed the maximum
The expansion vessel of
the outdoor unit is too
small for the installation.
In this case, it is
recommended to install
an extra vessel outside
the unit.
allowed water volume.
(a) This is the height difference (m) between the highest point
of the water circuit and the outdoor unit. If the outdoor unit
is at the highest point of the installation, the installation
height is 0m.
(b) The maximum water volume is 185l in case the circuit is
only filled with water, and 105l in case the circuit is filled
with water and glycol.
Minimum flow rate
Check that the minimum flow rate (required during defrost/backup
heater operation) in the installation is guaranteed in all conditions.
a Outdoor unit
b Heat exchanger
c Pump
d Shut‑off valve
e Backup heater kit (optional)
f Collector (field supply)
g By‑pass valve (field supply)
FHL1...3 Floor heating loop (field supply)
T1...3 Individual room thermostat (optional)
M1...3 Individual motorised valve to control loop FHL1...3 (field
supply)
Maximum water volume
NOTICE
The maximum water volume depends on whether glycol is
added to the water circuit. For more information on the
addition of glycol, refer to "7.7.6To protect the water circuit
against freezing"on page39.
Use the following graph to determine the maximum water volume for
the calculated pre-pressure.
Installer reference guide
28
NOTICE
If glycol was added to the water circuit, and the
temperature of the water circuit is low, the flow rate will
NOT be displayed on the user interface. In this case, the
minimum flow rate can be checked by way of the pump
test (check that the user interface does NOT display error
7H).
NOTICE
When circulation in each or certain space heating loops is
controlled by remotely controlled valves, it is important that
the minimum flow rate is guaranteed, even if all valves are
closed. In case the minimum flow rate cannot be reached,
a flow error 7H will be generated (no heating/operation).
Minimum required flow rate
05+07 models 12l/min
See the recommended procedure as described in "9.4 Checklist
during commissioning"on page78.
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
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ROTEX HPSU low temperature monobloc
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6 Preparation
a
6.3.4 Changing the pre-pressure of the expansion vessel
NOTICE
Only a licensed installer may adjust the pre-pressure of the
expansion vessel.
When changing the default pre-pressure of the expansion vessel
(1bar) is required, take following guidelines into account:
▪ Only use dry nitrogen to set the expansion vessel pre-pressure.
▪ Inappropriate setting of the expansion vessel pre-pressure will
lead to malfunction of the system.
Changing the pre-pressure of the expansion vessel should be done
by releasing or increasing nitrogen pressure through the schräder
valve of the expansion vessel.
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
▪ All wiring must be performed by an authorized
electrician and must comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on the site and all electrical
construction must comply with the applicable
legislation.
a Schräder valve
6.3.5 To check the water volume: Examples
Example 1
The outdoor unit is installed 5m below the highest point in the water
circuit. The total water volume in the water circuit is 100l.
No actions or adjustments are required.
Example 2
The outdoor unit is installed at the highest point in the water circuit.
The total water volume in the water circuit is 350l. The concentration
of propylene glycol is 35%.
Actions:
▪ Because the total water volume (350l) is more than the default
water volume (105l), the pre-pressure must be decreased.
▪ The required pre-pressure is:
Pg = (0.3+(H/10))bar = (0.3+(0/10))bar=0.3bar.
▪ The corresponding maximum water volume at 0.3 bar is 150 l.
(See the graph in the chapter above).
▪ Because 350l is more than 150l, the expansion vessel is NOT
appropriate for the installation. Therefore the system requires an
external expansion vessel.
6.4 Preparing electrical wiring
6.4.1 About preparing electrical wiring
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
WARNING
The backup heater should have a dedicated power supply.
WARNING
ALWAYS use multicore cable for power supply cables.
6.4.2 About preferential kWh rate power supply
Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often
authorized to bill clients at benefit rates. E.g. time-of-use rates,
seasonal rates, Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such preferential kWh rate
power supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the preferential kWh
rate power supply delivery systems available, if any.
When the equipment is connected to such preferential kWh rate
power supply, the electricity company is allowed to:
▪ interrupt power supply to the equipment for certain periods of time;
▪ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
Control box RKCB07CAV3 is designed to receive an input signal by
which it switches the outdoor unit into forced-off mode. At that
moment, the compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
6.4.3 Overview of electrical connections except external actuators
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
Installer reference guide
29
6 Preparation
5
8
0
1
5
0
0
0
a
2
3
5 1
4
f e cd
5
8
0
1
5
0
0
0
f
5 1
4
3
6
2
e
b
d c
5
8
0
1
5
0
0
0
5
8
0
1
5
0
0
0
a b
f e c d
3
2
6
7
15 4
M
M
a
1
2
13
5
21
18
14
15
22
17
19
16
27
20
12
911 10 7 8
3
4
28
30
29
26
25
24
23
6
c
d
b
f
e
Normal power
supply
6.4.4 Overview of electrical connections for
The following illustration shows the required field wiring.
INFORMATION
The following illustration is an example and might NOT
match your system layout.
Installer reference guide
30
Preferential kWh rate power supply
Power supply is
NOT interrupted
Power supply is
interrupted
During preferential
During preferential
kWh rate power
supply activation,
power supply is NOT
interrupted. The
outdoor unit is turned
off by the control.
Remark: The
electricity company
must always allow the
power consumption
of the hydro part of
the outdoor unit (and
of the control box, if
part of the system).
a Normal power supply
b Preferential kWh rate power supply
c Hydro part of the outdoor unit
d Refrigerant part of the outdoor unit
e Control box
f Backup heater kit
1 Power supply for outdoor unit
2 Interconnection cable to control box
3 Interconnection cable to backup heater kit
4 Power supply for control box
5 Power supply for backup heater kit
6 Preferential kWh rate power supply (voltage free contact)
7 Normal kWh rate power supply (to power the hydro part of
the outdoor unit in the event of a power supply interruption
of the preferential kWh rate power supply)
kWh rate power
supply activation,
power supply is
interrupted
immediately or after
some time by the
electricity company.
In this case, the
hydro part of the
outdoor unit (and the
control box, if part of
the system) must be
powered by a
separate normal
power supply.
external and internal actuators
a Backup heater power supply
b Backup heater kit
c Outdoor unit
d Control box
e Option box
f Domestic hot water tank
Outdoor unit
Item Description Wires Maximum
running
current
Power supply
1 Power supply for
2+GND
(a)
outdoor unit
2 Normal kWh rate power
2 6.3A
supply
User interface
3 User interface 2
(b)
Optional equipment
4 Remote outdoor sensor 2
(c)
Field-supplied components
5 Space heating/cooling
2
(c)
operation control (or
shut‑off valve)
(a) Refer to name plate on outdoor unit.
(b) Cable section 0.75mm² till 1.25mm²; maximum length:
500m. Applicable for both single user interface and dual
user interface connection.
(c) Minimum cable section 0.75mm².
Control box
Item Description Wires Maximum
running
current
Power supply
6 Power supply for
2+GND
(a)
control box
Interconnection cable
7 Interconnection cable
2
(b)
between outdoor unit
and control box
8 Interconnection cable
2
(c)
for the user interface
(between outdoor unit
and control box)
RBLQ05+07CAV3 + RDLQ05+07CAV3 + RKCB07CAV3 +
RK2CB07CAV3 + RKMBUHCA3V3 + RKMBUHCA9W1
ROTEX HPSU low temperature monobloc
4P415097-1A – 2016.02
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