Rotex HPSU 6-8X User manual

For certified companies
ROTEX HeatPumpSolarUnit
Heat Pumps-Solar-System with HybridCube
Hot Water Storage Tank
Installation and maintenance
instructions
Type
Nominal output
modulating in kW
Cooling Heating
ROTEX HPSU 6-8X 7.2 - 8.4 5 - 8.4
ROTEX HPSU 6-8H —5 - 8.4
ROTEX HPSU 11-16X 3.8 - 13.1 10.3 - 16
ROTEX HPSU 11-16H —10.3 - 16
Serial number
Customer
GB
Edition 05/2009
Part 2 of 2

Contents
4FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
5 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.1 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.1.1 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.1.2 Configure ROTEX HeatPumpSolarUnit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.1.3 Checks before start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
5.1.4 Starting up ROTEX Solaris system (accessories) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.1.5 Starting up a ROTEX HeatPumpSolarUnit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
5.1.6 Configure wireless room thermostat (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.1.7 Checks after start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.2 Checklists for start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
6 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.1 Display and operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
6.1.1 Control systems Indoor Module (RKHB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.1.2 System PCB Outdoor Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.2 Basic functions and operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
6.2.1 Switching the system on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.2.2 Setting the control clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.2.3 Display of the current Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
6.2.4 Carry out test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
6.2.5 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.3 Program clock and Switching time program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.3.1 Reading and programming switching times for Room cooling / Room heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6.3.2 Copying switching times for room cooling / room heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
6.3.3 Read and program switching times for low-noise operation / water heating / booster heater (EHS) . . . . . . . . . . . . . . . . . . . . . . .83
6.3.4 Delete switching time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
6.4 Individual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
6.4.1 Setting parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
6.4.2 Parameter description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
6.4.3 Parameter table factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
6.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
6.5.1 Room thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
6.5.2 Wireless Room Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
6.5.3 ROTEX Solaris System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
7 Service and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.1 General overview of service and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.2 Service and maintenance tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
7.2.1 Outdoor Module (RRHQ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7.2.2 Indoor Module (RKHB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
7.2.3 HybridCube hot water storage tank and Booster Heater (EHS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
7.3 Confirmation of servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
8 Faults and malfunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.2 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
8.3 Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
8.4 Forced operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8.4.1 Forced cooling operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
8.4.2 Forced heating operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9 Taking out of service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9.1 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9.2 Final shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.1 Basic data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Part 2

Contents
5
FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
10.1.1 Outdoor Module (RRHQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.1.2 Indoor Module (RKHB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
10.1.3 Noise pressure level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
10.1.4 HybridCube hot water storage tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
10.1.5 Performance data heat pump system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
10.2 Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
10.2.1 Characteristic curves for operating modes in 6-8 kW systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
10.2.2 Characteristic curves for operating modes in 1-phase 11-16 kW systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
10.2.3 Characteristic curves for operating modes in 3-phase 11-16 kW systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
10.2.4 Characteristic curves for pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
10.2.5 Temperature limits discharge water (avoiding condensation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
10.3 Piping diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
10.4 Circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
10.4.1 Booster Heater (EHS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
10.4.2 Outdoor Module (RRHQ) 6-8 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
10.4.3 Outdoor Module (RRHQ) 11-16 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
10.4.4 Indoor Module (RKHB) 6-8 kW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
10.4.5 Indoor Module (RKHB) 11-16 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
10.5 Connection diagram for Indoor, Outdoor Module, E-PAC and optional components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
10.6 Symbols, key names, cable colours and supplementary information on connection and circuit diagrams. . . . . . . . . . . . . . . . . . . . . 138
11 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

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65 FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
5Start-up
Incorrect start-up makes the manufacturer's guarantee for the unit void. If you have questions, please contact our Technical
Customer Service.
5.1 Initial start-up
Once the ROTEX HeatPumpSolarUnit has been set up and fully connected, it requires one-time adjustment to the installation
environment (configuration) by a qualified expert and must also be adjusted to the user's requirements. After this configuration,
the system can be put into operation.
5.1.1 Requirements
– The ROTEX HeatPumpSolarUnit is fully connected.
– The heating and hot water system are filled and charged with the right pressure.
– The storage tank is filled to the overflow point.
– The control valves of the heating system are open.
– The refrigerant system is dehumidified and filled with the specified amount of refrigerant.
– All electrical connections have been made in accordance with the installation guidelines.
– Optional accessories have been mounted on and connected up.
5.1.2 Configure ROTEX HeatPumpSolarUnit
Configuration is carried out by setting the DIP switches in the Indoor and Outdoor Module and setting parameters on the
control system of the Indoor Module (RKHB). Setting up optional components such as a room thermostat or the ROTEX Solaris
system is carried out on the particular component.
The parameters are not set until after the first start-up (see Chapter 6.4 "Individual").
WARNING!
A ROTEX HeatPumpSolarUnit that is installed or started incorrectly may not operate properly and is
dangerous for the health and safety of individuals.
• The ROTEX HeatPumpSolarUnit is only to be started up by qualified electricians, certified heating
engineers, and HVAC specialists, who because of their professional training and expert knowledge, have
experience in the professional installation and maintenance of heating, cooling and air conditioning
systems and heat pumps.
CAUTION:
A ROTEX HeatPumpSolarUnit not put into operation properly can lead to damage to property and the
environment.
• Observe the regulations in VDI 2035 in order to avoid corrosion and deposits.
• If the filling and make-up water has a very high hardness level, measures for hardness stabilisation and
softening would be needed.
– We recommend the use of Ferrox limescale and corrosion protector KSK ( 15 60 50).
• During operation of the system, the water pressure must be checked at the pressure gauge at regular
intervals (it must be in the green range). If necessary, readjust by topping up.

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Position of DIP switches and the user interface
Outdoor Module (RRHQ) 6-8 kW
SW4 DIP switches
Fig.5-1 Position Switch RRHQ 6-8 kW Fig.5-2 Factory setting SW4
Outdoor Module (RRHQ) 11-16 kW
DS1 DIP switch
Fig.5-3 Position Switch RRHQ 11-16 kW Fig.5-4 Factory setting DS1
Indoor Module (RKHB)
1 User interface control system
SS2 DIP switch
Fig.5-5 Position of switch and user interface Indoor Module (RKHB) Fig.5-6 Factory setting SS2
12
ON
DS1

5 xStart-up
67 FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
Configure DIP switch
The DIP switches on the Outdoor Module (RRHQ) have already been preset in the factory. Before starting up the system for the
first time, the position of the switches on the Indoor and Outdoor Module must be checked against the pictures 5-2, 5-4 and 5-
6 and if necessary, configured on the basis of Tab. 5-1.
5.1.3 Checks before start-up
• Check all hydraulic connections for leakage.
• Check all refrigeration connections for leakage.
• Check all points on the "Checklist before start-up" (see chapter 5.2). Log the test results on the checklist.
Only if all points on the checklist can be answered with Yes may the ROTEX HeatPumpSolarUnit be temporarily started up.
5.1.4 Starting up ROTEX Solaris system (accessories)
When a ROTEX Solaris system is installed; start it up in accordance with the Installation and operating instructions that belong
to it.
5.1.5 Starting up a ROTEX HeatPumpSolarUnit
• Switch on mains switches of all components of the ROTEX HeatPumpSolarUnit.
• Start the system by pressing the key on the user interface.
• Wait for the start phase.
The number "88" is displayed for approx. 30 s during the start phase on the display of the user interface.
The system starts an automatic test run that lasts approx. 3 min.
During this test run, nothing particular is shown on the Display.
After a successful automatic test run, the system starts normal operation.
• Set time and weekday for control system (see Chapter 6.2.2 "Setting the control clock").
DIP switch Nam
e
Designation ON OFF
SW4
A Not applicable for fitter — S
B Not applicable for fitter — S
C Not applicable for fitter — S
D Not applicable for fitter — S
SS2
1 Not applicable for fitter — S
2 Hot water storage tank installed not installed S)
3 Room thermostat / Pump operation installed / on not installed / off S)
4 Priority circuit for the circulation pump 1) Heating / cooling Hot water storage tank)
DS1
1 Manual operation function On Off S)
2 Operating mode in manual operation Cooling Heating S)
Tab. 5-1 Configuration of DIP switches 1) Only valid if switch SS2-2 is set to "ON".
S) Standard factory setting
The power consumption required may be higher during the first 50 h (running in period) than the power con-
sumption stated on the type plate. This increased power consumption is caused by the compressor which
only achieves a stable power consumption after a running in period.
This state is not a material defect, but a typical feature of this component.
It is important that the water temperature does not fall below 10 °C during the test run. Otherwise the frost
protection switch could be activated and the test run would not be completed.
If the water temperature falls below 10 °C, the must be repeatedly pressed until the symbol is
displayed. This switches on the Backup Heater (BH) during the automatic test run and the water temperatures
is kept above 10 °C.

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FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
Setting parameters
A detailed explanation of the parameters, their standard settings and procedure for setting them is described in detail in
Chapter 6.4 "Individual".
• Parameter [9-01]: Lower limit of target heating value
• Parameter [0-00]: Access authorisation
– If necessary the fitter can block certain keys for the user.
• Parameter [1-XX]: Weather-dependent target value regulation
– The ambient temperature target values must be adapted to the outside climate at the installation site.
• Parameter [2-XX]: Legionella protection
– The disinfection parameters may need to be adapted to the country-specific requirements.
• Parameter [3-00]: Automatic Restart
– Make setting as specified by operator.
• Parameter [4-XX]: Operating the reserve heating and switch-off temperature of room heating
– Make setting as specified by operator.
• Parameter [5-XX]: Bivalence temperature and priority temperature of room heating
– Make setting as specified by operator.
• Parameter [6-XX]: Hysteresis (DT) for water heating
– Make setting as specified by operator.
• Parameter [7-00]: Step length for hot water
– Setting depending on the preset target temperature for the Booster Heater (EHS) as specified by the operator.
• Parameter [8-XX]: Configuration of water heating
– Make setting as specified by operator.
• Parameter [9-XX]: Target value temperature ranges for room heating and room cooling
– Make setting as specified by operator.
– Parameter [9-01] must be set to 15 °C.
• Parameter [C-00]: Priority Solar Support (only when ROTEX Solaris system is installed)
– If a ROTEX Solaris system is installed the value may be set to [0].
Set pump speed of circulation pump
5.1.6 Configure wireless room thermostat (accessory)
The wireless connection between the two devices must be configured for communication between the wireless room thermostat
and receiver to work. The configuration must be carried out in accordance with the relevant installation and operating instruc-
tions.
CAUTION!
If the temperature change in the underfloor heating system is too fast the first time it is switched on, the
concrete floor could crack during heating.
• Set parameter [9-01] to 15 °C for initial start-up.
• After several heating cycles, the lower limit [9-01] must be adapted to the specification of the particular
underfloor heating system.
• If the running water in the system makes noises, reduce the pump speed
of the circulation pump step by step.
• With a set pump speed, the external static pressure (ESP) must be within
the range of the particular characteristic curve to guarantee an appro-
priate flow rate (see diagram in Chapter 10.2.4 "Characteristic curves for
pumps").
Fig.5-7 Setting pump speed
The pump speed is set in the factory to the highest speed.
III
II
I

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5.1.7 Checks after start-up
• Check all points on the "Checklist after start-up" (see chapter 5.2). Log the test results on the checklist. Only if all points
on the check list can be answered with Yes may the ROTEX HeatPumpSolarUnit system be handed over to the operator.
• Fill in the supplied installation and instruction form jointly with the user/owner.
5.2 Checklists for start-up
Checklist before start-up
1. Is the ROTEX HeatPumpSolarUnit properly installed in accordance with a permitted set-up and without any discernible damage? Yes
2. Have the servicing flaps and covers removed during assembly been put back in place? Yes
3. Is the room where the Indoor Module (RKHB) is set up adequately dimensioned (critical density limit for the refrigerant used)?Yes
4. Does the mains connection conform to the specifications? Yes
5. Mains voltage for 1-phase connection ~230 Volt, 50 Hz, for 3-phase connection ~400 Volt, 50 Hz? Yes
6. Have the fuses and safeguards been completely installed in accordance with the rules and regulations? Yes
7. Have the E-Pack and the Booster Heater (EHS) been connected correctly? Yes
8. Is the system water pressure within the specified range? Yes
9. Have all the lines in the water circuit been connected correctly; are they insulated and leakproof? Yes
10. On restoration: Has the heat distribution network been cleaned? Is a dirt filter installed in the heating return flow? Yes
11. Is the safety valve connected to a free outlet? Yes
12. Is the membrane expansion tank mounted according to specifications and in the requisite size? Yes
13. Are all sensors connected and correctly positioned? Yes
14. Is the storage tank topped up with water to overflow, is the condensation water drain line connected correctly and leakproof?Yes
15. Have the storage charging circuit and the heating circuit been bled? Yes
16. Have optional components (Room thermostat, Solaris system) been connected correctly to the ROTEX HeatPumpSolarUnit? Yes
17. Are all refrigerant lines connected correctly and leakproof? Yes
18. Has the refrigeration system been evacuated, dehumidified and filled with refrigerant? Yes
19. Has the quantity of refrigerant to be supplemented been calculated (topped up if required)? Yes
20. Has the total fill-up quantity of refrigerant been entered on the adhesive label on the service opening of the Outdoor Module? Yes
21. Has the main circuit breaker been set to "ON"? Yes
22. Have the DIP switches on the ROTEX HeatPumpSolarUnit been checked and adapted to the operating conditions? Yes
Only if all points on the checklist can be answered with Yes may the system be started up!

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Checklist after start-up
A Is the system working without any faults (noise emission, operation, fault codes)? Yes
B Does the system become hot in heating operation and cold in cooling operation1)?Yes
C Is the system water pressure within the specified range? Yes
D Are the components connected as an option working faultlessly with the ROTEX HeatPumpSolarUnit? Yes
E Has the configuration of the ROTEX HeatPumpSolarUnit been checked and adapted to the operating conditions and the user
parameters?
Yes
F Has the automatic test run been carried out successfully? Yes
G Has the evacuation function been tested? Yes
H Has the operator been informed of the documentation obligation concerning annual maintenance and certification of refrigerant fill
quantities in accordance with F-Gas Directive (EU) No. 842/2006?
Yes
I In the case of new installations: Have the operating instructions and operating manual been handed over and has the operator been
trained?
Yes
1) The function room cooling is available only for systems of type "HPSU..X".
Only if all points on the check list can be answered with Yes may the ROTEX HeatPumpSolarUnit be handed over to the operator.
Location and Date: Signature of installer:
Signature of owner:

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6 Operation
6.1 Display and operating elements
6.1.1 Control systems Indoor Module (RKHB)
DANGER!
If electrical components come into contact with water, this can cause an electric shock as well as cause
potentially fatal burns or injuries.
•Protect the Display and Keys of the control systems from the effects of moisture.
•Toclean the display, use a dry cotton cloth. Using aggressive cleaning agents and other liquids can
cause damage to equipment or lead to an electric shock.
Fig.6-1 Operating elements on the user interface of the indoor module (RKHB)
1 Key "On / Off"
2 Operating Display LED
3 Display operating mode "Room
heating", "Room cooling1)", "Water
heating", "Low-noise operation"
4 Display Control using room thermostat
5 Display Weekday
6 Display Time
7 Display Program clock switched on
8 Display Current switching time program
9 Display Program clock switched off
10 Display Service technician required
11 Display Temperature set
12 Display Parameter setting active
13 Display "Function not available"
14 Display Operating mode "Start-up",
"Defrost operation"
15 Display refrigerant compressor active
16 Display Backup Heater (BH) switched on
17 Display Booster Heater (EHS) switched on
18 Display Circulation pump active
19 Display Outside temperature display
active
20 Display Weather dependent target
temperature regulation active
21 Display Water outlet temperature on
Indoor module, outside temperature or
temperature of the hot water storage
tank
22 Display Test run active
23 Display Parameter code
24 Display Fault code
25 Key operating mode "Room heating",
"Room cooling"1)2)
26 Key operating mode "Water heating"
27 Key Weather dependent target value
regulation
28 Key Parameter mode, test run
29 Key Programming
30 Key Program clock
31 Key Time setting
32 Keys Temperature setting
33 Keys Setting hot water temperature
34 Key Low-noise operation
35 Pressure gauge water pressure
1) The function room cooling is available only
for systems of type "HPSU..X".
2) The key is inactive when a room thermostat
or wireless thermostat is connected.

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1 - Key "On / Off"
Switching the ROTEX HeatPumpSolarUnit on and off When the heating system is switched on, the operating display LED lights
up green.
If the ROTEX HeatPumpSolarUnit is operated using an external room thermostat, this key is deactivated and the icon is
displayed.
Pressing the key too often repeatedly can cause the system to malfunction (maximum of 20x per hour).
2 - Operating Display LED
The operating display LED lights up while room heating or room cooling is running. The LED flashes if there is a malfunction. If
the LED is switched off, room cooling1) or room heating are inactive. However, the other operating modes can still be active.
3 - Display current operating mode
– Room heating :
In this operating mode, the heating function of the heat pump is used to heat the room.
– Room cooling1) :
In this operating mode, the cooling function of the heat pump is used to cool the room1) via the heating pipework system.
– Water heating :
In this operating mode, the hot water supply is used by the heat pump and the Booster Heater (EHS) built into the HybridCube.
In the parameter settings [4-02], the priority of the heating components used (Backup Heater (BH), Booster Heater (EHS))
can be set again.
The symbol flashes if the hot water supply is being provided by an installed ROTEX Solaris system.
– Low-noise operation :
In this operating mode, the output of the system is reduced so that the operating noise of the Outdoor module (RRHQ) is
diminished.
4 - Display Control using room thermostat
This icon shows that an external room thermostat is controlling the system. The user can use the external room thermostat to
start and stop the room heating/room cooling operation1) and can change the operating mode (Cool1)/Heat).
If an external room thermostat is connected, the program clock for room cooling1) and room heating does not work.
5 - Display Weekday
This display shows the current day of the week. In programming mode, the program clock shows the day set.
6 - Display Time
The clock display shows the current time. In programming mode, the program clock shows the switching time set.
7 - Display Program clock switched on
This icon shows that the program clock is switched on.
8 - Display current switching time program
This icon shows the daily switching time program for the program clock.
9 - Display Program clock switched off
This icon shows that the current switching time has switched the system off.
10 - Display Service technician required
This icon shows that the system must be checked. Contact your nearest ROTEX contract partner or ROTEX Customer Service.
CAUTION!
Never operate the keys on the user interface with a hard, sharp object. This can cause damage and can cause
the control to malfunction.
Pressing the key does not have any effect on the hot water supply. You can only switch the hot water
supply on or off using the key .

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11 - Display Temperature set
The display shows the current temperature set for the system.
12 - Display Parameter setting active
The display shows that the user is in parameter setting.
13 - Display "Function not available"
This icon is always shown if an option that has not been installed is selected or if a function is not available.
14 - Display Operating mode "Start-up", "Defrost operation"
This icon shows that the operating mode defrost or start-up is active.
15 - Display refrigerant compressor active
This icon shows that the refrigerant compressor is active in Outdoor module.
16 - Display Backup Heater (BH) switched on
The Backup Heater (BH) makes additional heat available if the outside temperatures are low (high heating load).
– : Backup Heater (BH) Level 1 is hooked up.
– : Backup Heater (BH) Level 2 is hooked up.
17 - Display Booster Heater (EHS) switched on
This icon shows that water heating in the HybridCube is being supported by the Booster Heater (EHS).
18 - Display Circulation pump active
This icon shows that the circulation pump is switched on.
19 - Display Outside temperature display active
If this icon flashes, the outside temperature is shown in the temperature display (11).
20 - Display Weather dependent target temperature regulation active
This icon shows that the control automatically sets the target temperature value based on the outside temperature.
21 - Display Temperature
This icon appears if the water outlet temperature of the Indoor module (RKHB), the outside temperature or the hot water temper-
ature is shown in the HybridCube.
The icon is also shown if the temperature target value is set in programming mode.
22 - Display Test run active
This icon shows that the unit is undergoing a test run (see chapter 6.2.4).
23 - Display Parameter code
This display represents the code from the parameter setting (see chapter 6.4).
24 - Display Fault code
This code refers to the fault code list in Chapter 8 "x Faults and malfunctions" and is only used for maintenance purposes and to
remedy faults.
25 - Key operating mode "Room heating", "Room cooling1)"
This key allows you to manually change over between cooling and heating operation. If a room thermostat is connected, the key
is inactive and the icon is shown.
26 - Key operating mode "Water heating"
This key activates or deactivated the water heating. In this operating mode, the Booster Heater (EHS) is also hooked up or
switched off in the HybridCube.
Pressing the key does not have any effect on the water heating. The water heating can only be switched
on or off using the key .

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27 - Key Weather dependent target value regulation
This key activates or deactivates the function weather-dependent target value regulation. This function is only available in room
heating operation.
If the access authorisation in parameter [0-00] is set to Level 2 or 3, the key "Weather-dependent target value regulation" does
not work.
28- Key Parameter mode, test run
This key is used to set parameters and to start a test run after installation or maintenance work.
29- Key Programming
This multifunction key is used to program the switching times.
30 - Key Program clock
The main function of this multifunction key is to activate/deactivate the program clock. The key is also used to program the
control system. If the access authorisation in parameter [0-00] is set to Level 3, the key Program clock does not work.
31- Key Time setting and
These keys have several functions such as:
– Decreasing or increasing adjustment when setting the clock.
– Changing between display of the water outlet temperature on the Indoor module (RKHB), the ambient air temperature (outside
temperature) and the hot water temperature in the HybridCube.
– Decreasing or increasing adjustment for programming switching times in the program clock.
32 - Keys Temperature setting and
These keys have several functions such as:
– Setting the current temperature target value in normal operation or in switching time programming of the program clock.
– Setting the weather-dependent target value.
– Setting the week day while setting the clock.
33 - Keys Setting hot water temperature and
These keys are used to set the temperature target value for the water heating.
34 - Key Low-noise operation
In this operating mode the output of the system is reduced so that the operating noise of the Outdoor module (RRHQ) is reduced.
35 - Pressure gauge water pressure
The indicator on the pressure gauge must be in the specified range of 1 to 2 bar. If it falls below the specified pressure, the water
pressure must be increased by topping up the system.
1) The function room cooling is available only for systems of type "HPSU..X".

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6.1.2 System PCB Outdoor Module
6.2 Basic functions and operating modes
If the system is switched on, it fully automatically controls the following operating modes on the basis of the user setting:
– Room heating or room cooling1)
– Water heating
The operating mode can be affected by additional functions:
– Low-noise operation
– Weather-dependent control
– Switching times programming
– Setting the temperature target value
If the user enter a value manually, this setting remains active until the user changes it or until the program clock forces another
setting.
The control of the ROTEX HeatPumpSolarUnit is prepared for use on different types of systems. When selecting certain functions,
you may see the message . This means that the selected function is not available on this type of system or has
been blocked by the parameter "Access authorisation".
1) The function room cooling is available only for systems of type "HPSU..X".
Outdoor Module (RRHQ) 6-8 kW
SS1 DIP switch
SW1 Pushbutton
The DIP switch (SS1) is used to configure the Outdoor module
(RRHQ) and is preset in the factory. This switch must not be
adjusted.
The pushbutton (SW1) is pressed to start and end the
pumping out process (see chapter 4.7.6.) or the forced
cooling operation (see chapter 8.4.1.).
Fig.6-2 Position Switch RRHQ 6-8 kW
Outdoor Module (RRHQ) 11-16 kW
DS1 DIP switch
BS1-3Pushbuttons
(Not necessary for installation or for
normal operation.)
BS4 Pushbutton
The DIP switch (DS1) is used to
switch from automatic operation to
manual operation. Furthermore, you
can set whether in manual operation
the forced cooling or the forced
heating is active. For more detailed
information on Setting see chapter
8.4, Page 108.
The pushbutton (BS4) is used to start
and end the pumping out process (see
chapter 4.7.6.) or manual operation.
Fig.6-3 Position Switch RRHQ 6-8 kW

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Defrost
There is a risk of the heat exchanger in the outdoor module (RRHQ) freezing if the outside temperature is low during room heating
operation or heating for the hot water supply. If this danger occurs, the system starts defrost operation . It briefly
reverses the circulation and takes heat from the Indoor module (RKHB) to prevent the Outdoor module (RRHQ) freezing. After
defrost operation of a maximum of 8 minutes, the system automatically switches back the normal operation.
6.2.1 Switching the system on and off
• Press the key.
The operation LED lights up green.
During start-up, the icon is shown in the display of the user interface.
After start-up, the current operating mode is shown in the display of the user interface.
When heating operation is started, the pump is not started until a certain temperature is reached in the refrigerant heat exchanger.
This guarantees correct start-up of the heat pump.
When you press the key again, the system is shut down and the Operation LED goes out.
6.2.2 Setting the control clock
Setting the time
• Press key for at least 5 s.
The time and display of the weekday starts flashing.
• Use the keys and to set the time.
The time is increased/decreased by 1 min.
Holding the key or pressed increases/reduces the time by 10 min.
• Press the key to save or press the key again to cancel the setting.
Setting the weekday
• Press key for at least 5 s.
The time and display of the weekday starts flashing.
• Use the keys and to set the weekday.
The weekday is increased/decreased by 1 min.
• Press the key to save or press the key again to cancel the setting.
6.2.3 Display of the current Temperature
• Press the key for 5 s.
The icon and the initial water temperature on the Indoor module (RKHB) are shown.
The icons and flash in the display of the user interface.
• Use the keys and to select the following temperatures:
– External temperature
Icon flashes.
– Process water tank temperature
Icon flashes.
– Initial water temperature on the Indoor module (RKHB)
Icon flashes.
If no button is pressed within 5 s, the control leaves display mode.
If a room thermostat or wireless room thermostat is connected to the ROTEX HeatPumpSolarUnit, the icon
is shown and the key is not ready for operation.
In this case, the external room thermostat or wireless room thermostat switches on and off.

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6.2.4 Carry out test run
Automatic Test run
When the system is put into operation for the first time (when you press the key), the system automatically carries out
a test run. The test run takes approx. 3 min. During this time there is nothing particular shown on the Display.
• Start the system by pressing the key on the user interface.
• Wait for the start phase.
The number "88" is displayed for approx. 30 s during the start phase on the display of the user interface.
The system starts an automatic test run which lasts approx. 3 min.
During this test run, nothing particular is shown on the Display.
After a successful automatic test run the system starts normal operation.
Manual test run
If required, the engineer can manually initiate a test run at any time to check whether the functions cooling1), heating and water
heating are working properly.
• Press key 4x in a row.
The icon is displayed.
If no other key is pressed within 10 s, the user interface returns to normal operation.
You can also abort a test run by pressing the key once.
• Test the operating modes as follows:
– Room heating or air conditioning 1):
Use the key to select the operating mode. Start the test run by pressing the key once.
– Water heating:
Press key 1x. The test run starts automatically.
The test run ends automatically after 30 min or if the temperature set has been reached.
You can also abort a test run by pressing the key once.
The user interface returns to normal operation or if there are faulty connections or a malfunction, a fault code is dis-
played on the user interface.
1) The function room cooling is available only for systems of type "HPSU..X".
6.2.5 Operating modes
Room heating
In this operating mode, heating operation is active and automatically regulated on the basis of the target value set for the flow
temperature.
To prevent the rooms from overheating, the room heating is switched off as soon as the outside temperature exceeds a certain
value (set by parameters [4-02]).
If the program clock is switched on, the system automatically regulates in accordance with the settings in the timer
programs. Setting the switching times for the flow temperature control is described in the Chapter 6.3 "Program clock and
Switching time program".
The target temperature for room heating can only be set manually.
It is important that the water temperature does not fall below 10 °C during the test run. Otherwise the frost
protection switch could be activated and the test run would not be completed.
If the water temperature falls below 10 °C, the must be repeatedly pressed until the symbol is
displayed. This switches on the Backup Heater (BH) during the automatic test run and the water temperatures
is kept above 10 °C.
Information on fault codes and how to remedy them is provided in Chapter 8 "x Faults and malfunctions".
To display the fault code most recently remedied, proceed as follows:
• Press key 1x.
• Press key 4x consecutively to return to normal operation.

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During this process, the display of the user interface shows the "adjustment value" that can be set by the user instead of the
target flow temperature. This adjustment value is the temperature difference between the target temperature calculated by the
control system and the actual target flow temperature (e.g. a positive adjustment value means that the actual target temperature
is not higher than the calculated target value.).
If the function "Weather dependent target value regulation" ( key) is activated, the target flow temperature is automati-
cally set in heating operation based in the outside temperature.
• Press key to change to the operating mode room heating.
Icon is shown in the display of the user interface.
•Usethe and keys to set the required flow temperature (for temperature range see Chapter 6.4
"Individual").
Weather-dependent target value regulation
This function is only available in room heating operation. The target flow temperature is set automatically in heating operation
based on the outside temperature.
• Press the key.
Icon is shown in the display of the user interface.
If the access authorisation in parameter [0-00] is set to Level 2 or 3, the key "Weather-dependent target value regulation" does
not work.
When you press the key again, the weather-dependent target value regulation is switched off and the icon goes out.
Room cooling1)
In this operating mode, the water in the heating circuit is cooled until it reaches the target flow temperature set.
If the program clock is switched on, the system automatically regulates in accordance with the settings in the timer
programs. Setting the switching times for the flow temperature control is described in Chapter 6.3.
The target temperature for room cooling can only be set manually.
• Press key to change to the operating mode room cooling.
Icon is shown in the display of the user interface.
•Usethe and keys to set the required flow temperature.
1) The function room cooling is available only for systems of type "HPSU..X".
Water heating
Once the room heating or room cooling has reached its target temperature, the Indoor Module (RKHB) supplies hot water to the
hot water storage tank in this mode.
Setting the switching times for the water heating is described in Chapter 6.3.
If the target temperature for the water heating is not reached by the heat pump, the control system switches the Booster Heater
(EHS) on as well.
CAUTION!
If the temperature change in the underfloor heating system is too fast the first time it is switched on, the
concrete floor could crack during heating.
• Set parameter [9-01] to 15 °C for initial start-up.
Only the Backup HHeater (BH) works in the Indoor Module (RKHB), thus ensuring a slow increase
in temperature.
• After several heating cycles, you can reset the lower value of the target heating temperature.
ROTEX HeatPumpSolarUnit
In this case, the room thermostat or the wireless room thermostat determines the operating mode (room cooling1)
or room heating).
ROTEX HeatPumpSolarUnit
In this case, the room thermostat or the wireless room thermostat determines the operating mode (room cooling1)
or room heating).

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If the symbol is flashing, the hot water for the HybridCube is not produced by the ROTEX HeatPumpSolarUnit but by the
optionally connected ROTEX Solaris system. See installation instructions for the ROTEX Solaris SOL-PAC.
The target temperature for water heating can only be set manually.
• Press the key.
Icon is shown in the display of the user interface.
The current target temperature for hot water is displayed for 5 s on the Display of the user interface.
• Within the 5 s, use the and keys to set the required hot water temperature.
When you press the key again, the water heating is switched off and the icon goes out.
Water heating with output support
With this option, you can support the hot water production in certain operating situations by also switching on the Booster Heater
(EHS) or by increasing the output of the Backup Heater (BH).
• Press the key for 5 s.
The icons and flash in the display of the user interface.
The output support is automatically deactivated again once the specified target temperature for hot water is reached.
Low-noise operation
Low-noise operation means that the Outdoor Module (RRHQ) works at reduced output. This reduces the operating noise caused
by the Outdoor Module (RRHQ).
• Press the key.
Icon is shown in the display of the user interface.
If the access authorisation in parameter [0-00] is set to Level 2 or 3, the key "Low-noise operation" does not work.
1) The function room cooling is available only for systems of type "HPSU..X".
6.3 Program clock and Switching time program
The program clock enables convenient control of operating statuses: these can be set by the user at a certain time and for a
certain duration. If the program clock is activated, it can control the following functions fully automatically:
– Room heating and room cooling1): 5 Timed operations per day.
– Water heating : 5 Timed operations that are repeated daily.
– Low-noise operation : 5 Timed operations that are repeated daily.
– Booster Heater (EHS): 5 Timed operations that are repeated daily.
To make hot water available all day, it is recommended that you leave the operating mode water heating
switched on all day.
CAUTION!
The operating mode "Low-noise operation" reduces the performance in room heating and room cooling
operation1), with the result that it may no longer be possible to reach the preset target temperatures.
With outside temperatures below freezing, there is a risk of material damage caused by frost.

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The program clock cannot change between the operating modes room cooling1) and room heating . This setting must be
made manually by the user.
During operation with manual setting by the user, if the program clock is also switched on, the system is also controlled by the
program clock. The program clock always only works according to the most recent user parameters set until new parameters are
set. This means that a setting made manually by the user can be cancelled by the program clock.
The program clock is switched on and off using the key. Saved time switching programs can be changed or deleted at any
time. To have a better overview, we recommend making a record of the programmed switching times and keeping this in a safe
place.
The Booster Heater (EHS) is fully automatically controlled via the control system integrated in the Indoor Module (RKHB). The
switching limits and switching time periods are defined in the parameter settings. If the Booster Heater (EHS) is also switched
on, the display on the user interface shows the symbol .
6.3.1 Reading and programming switching times for Room cooling / Room heating
The user can program 5 switching times per day for heating operation and 5 switching times for cooling operation1).
However, since the program clock cannot change automatically between the operating modes room cooling1) and room heating,
the control system uses the temperature values of the current time switching program of the operating mode currently selected.
When programming, you should therefore ensure that the user adopts the same temperature settings for both operating modes,
where applicable, and depending on the time of year, changes between the operating modes room cooling1) and room heating.
When programming, base your values on the standard values in the parameters and the programmed switching times of the other
operating modes to avoid unfavourable operating conditions.
1) The function room cooling is available only for systems of type "HPSU..X".
CAUTION!
If the Booster Heater (EHS) is used when the storage tank is not completely full this can lead to a
reduction in heating efficiency or an STL shutdown and may cause an electrical fault.
• Only run the Booster Heater (EHS) when the storage tank is completely full.

6 xOperation
81 FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
Reading switching times
1. Use the key to select the operating mode to be programmed.
2. Use the key to confirm the selection.
The selected operating mode flashes.
3. Use the key to confirm the selection again.
The current day flashes.
4. Use the and keys to select the weekday to be
programmed.
The selected weekday flashes.
5. Use the key to confirm the selection.
The first switching time program of the selected weekday
flashes.
6. Use the and keys to move to the other switching
times for this day. Empty switching times are not displayed.
Programming switching times
7. Hold the key pressed for 5 s.
8. Use the key to select the switching time number to be
programmed.
9. Use the key to switch between the following entry methods:
– : Room heating, room cooling1) are switched off.
– : Room heating, room cooling1) and control system are
switched on. Use the and keys to set the
temperature.
– : Room heating is operated on the basis of the weather-
dependent target value calculation.
10. Use the keys and to set the corresponding start
time.
11. Repeat steps 8 to 10 to program the other switching times or to
change to the highest switching time of the current day (see step 6).
Then continue with step 12 to complete programming.
12. Hold the key pressed for 5 s.
Current switching time is displayed.
The current switching time and all switching time below that
are saved. All switching times above the current switching time
are deleted.
Fig.6-4 Read and program switching times
• You can program the next weekday by pressing the key once after step 12.
• By pressing the key several times, you can return to the previous programming steps. Normal
operation is then active again if the key has been pressed often enough (until before step 1).