Solvis WWS Series User guide

SolvisDirekt – Operation for System Operators and
Installers
SolvisStrato with hot water station WWS-xx
Hot water flow rates 24 and 36 l/min
Operating system: A2.08EN
*22844* Item no.: 22844 P 32-EN Subject to technical changes
04.11 / 22844-3

Information about these Instructions
Information and notes
This symbol points out
•useful information and tips for easier operation as well as
• important notes on the correct operation of the system.
Caution
This symbol indicates that non-observance can lead to damage to
materials/objects/appliances.
Danger
This symbol indicates that non-observance can cause personal injury.
As we are always interested in improving our instructions,
we appreciate feedback of any kind.
Interested system operators should contact their
installers.
These instructions are intended for the system operator
and the specialist installing the heating system.
Client
On pages 5 to 23 you will find all the information you
need on how to use the SolvisControl system controller to
operate your heating system safely. If you have any ques-
tions, please consult the firm responsible for installation.
These instructions must be kept with the system
so that they are also available if required later.
Energy saving tips
This symbol refers to suggestions on how to save energy.
This protects the environment and reduces costs.
Installer
Starting on page 24, you will find additional information
for the installation technician about starting up the Solvis-
Control system controller and further setting options.
We recommend that you participate in a Solvis
training course for safe and correct installation
of heating systems.

P32-EN – Subject to technical changes 04.11 3
Client
Technician
Contents
Contents
Section A: Instructions for System Operators (Operating Mode: Client) . . . . . . . . . . . . . . . . . .3
1 Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Information about the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Switching the System On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Operating the System Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Information about SolvisControl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Accessories (please order separately) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Using the room sensor (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Overview of time programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Problems with the room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 Setting the heat curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 SolvisControl System Controller Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Section B: Instructions for Installers (Operating Mode: Technician) . . . . . . . . . . . . . . . . . . . . 23
8 Setting the Controller and Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1 Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2 SolvisControl: Selecting the operating mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.3 Transfer of the boiler temperature to modulating third-party boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.4 Menu overview (technician level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.5 Start-up and sensor installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.6 Function check of outputs (pumps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.7 Setting the impulse rate (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.8 Connecting the swimming pool sensor (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 “Functions” Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.1 Maintenance function “CH.SWEEP” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.2 Heating circuit control function “HEAT CIR.1” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.3 Heating circuit control function “HEAT CIR.2” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.4 Hot water requirement function “WW_REQ.1” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.5 Hot water requirement function “WW_REQ.2” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.6 Hot water requirement function “WW_REQ.3” (swimming pool heating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.7 Circulation control function “CIRCU” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.8 Heat quantity counting functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.9 REQ. HEATING function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10 Additional Information for Installers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.1 Checking functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.2 Frequently asked questions about SolvisControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
10.3 Overview of other SolvisControl parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11.1 Information on SolvisControl system controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11.2 Resistance measurement values of the temperature sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.3 Power consumption SolvisDirekt system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.4 Connection diagram for SolvisControl control board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
11.5 System diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
11.6 Circuitry of the burner requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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4
Safety Notes
1 Safety Notes
In case of an emergency:
•Switch off the mains voltage immediately.
•Shut off the gas or oil supply.
•Use a suitable fire extinguisher in case of fire.
•Danger of frost damage. You will have to keep the
heating system turned on in the winter so that
the radiators and pipes lines do not freeze. During
periods of absence, use the “leave” function of
the heating circuits or switch the heating circuits
to “Standby” (page 35).
•Wipe down the control console and the storage
tank insulation with a wet cloth only.
• The operating element of the SolvisControl system
controller must be protected from direct sunlight.
Solvis heating systems use state-of-the-art technology and
meet all relevant safety requirements. They are designed
with particular emphasis on safety. But improper operation
may result in hazards or damages. Observe the following
notes:
•Read the operating instructions carefully.
•Observe the safety notes to prevent damages to persons,
material or devices.
•Operate the system only for its intended use and in good
condition. Make sure to have any problems that cannot be
solved with the operating instructions handled by qualified
technicians from specialist heating companies.
•The system controller was programmed with the special
features of your heating system. Make sure to use the
controller for this heating system only.
• Do not modify any of the components. Use only original
Solvis spare parts.
• This heating system must be installed, repaired and main-
tained only by qualified technicians from specialist heating
companies. Only qualified electricians may work on live
parts.
• When working on the system, it must be disconnected
from the mains and secured from being switched back on.

P32-EN – Subject to technical changes 04.11 5
Client
Information about the system
2 Information about the System
Congratulations on your purchase of the SolvisDirekt
system. The main feature of this system is the central,
hygienic and economic water heating.
General functional description (Figure on right)
The hot water station WWS-36 as part of the SolvisDirekt
system consists of components (1) and (2). The cold water
(CW) is heated via a plate heat exchanger (1) through the
heating circuit with the help of a buffer discharging station
(2) in direct flow to a constant usage temperature. The
heat is held in the SolvisStrato stratified buffer tank (3).
Instead of a large hot water volume which has greater
hygiene risks and requires considerable energy to maintain
the temperature, the demand is covered by an efficient
fresh water system. The boiler (4) charges the stratified
buffer tank. You can connect a room heating system (5).
You can easily expand the system into a thermal solar
system, consisting of a solar heat transfer station (6) and
a collector field (7).
Advantages of the SolvisDirekt system
With the SolvisStrato stratified buffer tank integrated in the
fresh water system (figure on right), you benefit from our
patented stratified charger technology: Compared to stan-
dard buffer tanks, you can use the heat more efficiently
(SERC comparative test, see SolvisStrato planning docu-
ment P10) and heat water more conveniently (ITW compar-
ative test).
The system solution is particularly unique thanks to:
• High savings potential for energy costs,
• Hygienic and fresh hot water provided at the target tem-
perature, even with low water levels or after extended
periods of standstill,
• Forward-looking upgrading, for example, with a thermal
solar system to optimise the return,
• A high degree of installation reliability due to the prefabri-
cation of the functional modules,
• Reliable adaptation to requirements through modules
with guaranteed high performance,
• Simple operational monitoring by saving results and
• integration of variable heat sources that can be
combined.
Design of the SolvisDirekt system
Connections on the SolvisStrato buffer tank
18
9
AB CD E F
GH
2
3
6
5
4
7
1 – 7 Top connections
8 – 9 Bleeding
A – H Bottom connections
1WWS: Hot water PHE
2WWS: Buffer charging
station
3Buffer tank
4Boiler
5Heating circuit
6Solar heat transfer station
7Collectors

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6
Information about the system
2.1 SolvisStrato stratified buffer tank
SolvisStrato Stratified Buffer Tank
The SolvisStrato stratified buffer tank was designed espe-
cially for use in solar systems. It is the core element of
your heating system. In the Low-Flow System from Solvis,
your SolvisStrato can be used with all collector surfaces
up to 40 m².
In closed systems, an insulating jacket encases the steel
container. All connections are routed downward underneath
the insulation. The pipelines connect your SolvisStrato with
the hot water station (section 2.2), the boiler (see oper-
ating instructions of the manufacturer), the heating cir-
cuits and the solar heat transfer station (section 2.3).
The stratified charging system
One of the essential features of the stratified buffer tank is
the separation of the water into three zones:
• Hot water buffer layer
In the uppermost layer, there is hot water for heating of
drinking water. Depending on the tank size, 90 to 200 l
are stored here, so that enough water is heated for small
and average dispensable amounts even at times when
there is no auxiliary heating, e.g. at night.
• Heating buffer layer
The middle layer contains hot water for the heating.
• Solar buffer layer
The lower layer contains colder water to be heated by the
solar power system.
The heat from the collector is delivered into the secondary
solar circuit using the solar heat transfer station. The solar
flow discharges into a pipe with membrane flaps in the
storage tank – the stratified charger. These two elements
work in the following way (figure on right):
The external solar heat exchanger transmits the heat gen-
erated by solar power to the water in the tank. The water in
the tank rises. Then the stratified charger ensures that it is
layered according to temperature: hot water at the top, hot
water below.
Please contact your installation firm if you have any
questions regarding the function and control of your
system.
The Solvis stratified charger principle

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Client
Information about the system
2.2 Hot water station WWS-xx
The hot water station WWS-xx is as described in section 2
the core element of the SolvisDirekt system. It includes
all components required for heating drinking water to the
desired temperature.
The hot water station consists of a plate heat exchanger
(PHE) as well as a buffer charging station and it has an
integrated volume flow encoder to control the heating of
drinking water based on demand. It also includes ther-
mometers to measure the flow and return temperature of
the primary circuit of the plate heat exchanger.
All components are mounted on a console that you can
either stand upright or mount on the wall using the appro-
priate mounting hardware. Use flushing valves at each con-
nection to maintain the PHE.
Depending on the demand for hot water, you can choose
from two different hot water stations:
•WWS-24, up to 24 l/min hot water flow rate
•WWS-36, up to 36 l/min hot water flow rate
with a temperature increase of 35 Kelvin.
WWS-36 Hot water station

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8
Information about the system
2.3 Solar heat transfer station SÜS-xx
SÜS-20 Solar heat transfer station
This optional component of your supply unit makes sure
that the heat from the sun can be used. A solar heat
exchanger functions as the central component to which the
solar collector and stratified buffer tank are connected (by
means of two hydraulically separate circuits). The Solvis-
Control system controller regulates the solar circuit and
buffer circuit pumps. It also controls the speed of each
pump.
Depending on the size of the connected collector area,
there are three different sizes:
•SÜS-20, up to 20 m² opening surface
•SÜS-40, 20 to 40 m² opening surface
•SÜS-80, 40 to 80 m² opening surface.
2.4 SolvisControl system controller
Controller console RK-SC-SD with SolvisControl
system controller
The system controller coordinates all components.
SolvisControl functions:
•Hygienic water heating with time-controlled auxiliary
heating of the buffer
•Time-controlled swimming pool heating in addition to
pure solar heating
• Solar circuit control with two speed-controlled pumps,
including a frost protection function in the secondary
circuit
•Control of two mixed heating circuits
•Heating circuit 1 with floor drying function
•Heat quantity counter for solar circuit
•Circulation
Special features:
•Calendar function with automatic daylight saving time
setting
• Output for reading the data using a data logger
•Can be updated at any time using infrared interface
(bootloader optional)
Scope of delivery:
1Console with built-in mains circuit board
2 Mains switch
3Control unit (cover board)
not in figure:
•WW pump cable harness
•SolvisStrato sensor cable harness with 4 sensors
•4 x TF-SC temperature sensors, 1 x external sensor
•4 x screws with 6 mm anchors for wall mounting
•Operating instructions (P32, enclosed)

P32-EN – Subject to technical changes 04.11 9
Switching on the system
3 Switching on the System
Start-up: Your heating contractor has installed and started
up your system. S/he should also have explained to you
how to operate the system.
Resuming operation: If you want to start up the heating
system after an extended period of standstill, observe the
following instructions:
Switch on the system
Main switch
1. Check that the system is filled and bled of air in accor-
dance with regulations.
2. Ensure that the gas and oil valve on the supply line to
the boiler is open.
3. Switch on the boiler. Consult the operating instructions
for the boiler to ascertain the start-up procedure.
4. Switch on the system controller using the main switch
next to the control board (figure on right). The function
overview menu is called up approx. 30 seconds after
the version display. If the switch does not light up, the
power supply has probably been interrupted by the
emergency stop switch, which is usually next to the
boiler or (outside) on the heating room door.
5. Please always check whether the time and date have
been set correctly. Set the time and date if necessary
(page 12).
If the boiler does not start immediately, check that there is
a heating requirement at the controller. There are two main
reasons for a missing heating requirement:
1. The storage tank is at the set temperature.
2. There is no heating or hot water requirement.
In both cases, the boiler remains switched off.
A heating requirement is indicated by Output 12 being
highlighted in black (see figure on right). In this case, the
boiler should start up automatically after a while. The hot
water or heating buffer in the storage tank (page 6) is then
heated and supplies the heat consumers. If the tempera-
ture in the heating buffer exceeds the target value, the
burner is switched off.
789101112 13 14
yst: Ax.xxEN
Section of SolvisControl display field.
Output 12 is highlighted in black
(burner is on). This means the controller
is signalling a heating requirement.
Client

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10
Operating the System Controller
View of SolvisControl system controller
4.1 Information about SolvisControl
4 Operating the System Controller
Some concise information on controlling your solar power
and heating system:
Your heating and solar power system is controlled by
means of the SolvisControl system controller. These are its
functions in detail:
You can use it to control:
•The solar system
•Hot water heating
•Hot water circulation
•Two mixed heating circuits
•Auxiliary heating to meet hot water requirement
•Auxiliary heating to meet heating requirement and
•Swimming pool heating.
Below you can see an illustration of the SolvisControl
system controller. The most important component is the
rotary wheel, which moves the pointer in the display field
up and down when turned. The pointer jumps from one
menu item to the next. Press the rotary wheel to select a
menu item. Depending on the menu, the operating buttons
at the bottom have different functions which are shown in
the display field above them.
The row of numbers at the top shows the status of the
outputs. When a number is highlighted in black, it means
that this output is switched “ON”. A hand symbol indicates
that this output is being operated manually.
Basic operating method:
Step 1: Turn the rotary wheel: Go to menu item
Step 2: Press rotary wheel: Select menu item
Either a submenu now appears with its own menu items, or
you have reached the input mode of a parameter (the back-
light of the rotary wheel changes from green to orange, the
pointer changes from

to ).
In the input mode of a parameter:
Step 3: Turn the rotary wheel: Select from the preset values
Step 4: Press rotary wheel: Save the selected value
Example:
In the figure below, the pointer is at “49”. If you press the
rotary wheel now, you can set the minutes for the time.
Pressing again will save the value.
In this way, you can make important settings which are
described in more detail below.
Among other things, the SolvisControl system col-
lector continuously monitors the collector sensor
and the storage tank reference sensor and also indi-
cates faults (see Section 7 “SolvisControl System
Controller Messages”, p. 22).
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Operat.Syst: Ax.xxDE
HELP SERVICE
Tue 16.03.2010
INPUTS
Norm.time: 09 : 49
1: T.Heat.Cir.P
Operating buttons
Rotary wheel
Pointer
Display field

P32-EN – Subject to technical changes 04.11 11
Client
Function overview:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Operat.Syst: A2.08EN
Sa. 20. 08. 2005
Summertime: 12:39
— — — — — — — — — — —
INPUTS
1: T.WW.Buffer
2: T.Warm Water
3: T.Ref.Sto
4: Temp. upper
heating buffer
8: T.Collector
10: T.Outdoor
— — — — — — — — — — —
OUTPUTS
— — — — — — — — — — —
HEAT CIR.1 F:17
OPERAT.: TIME/AUTO
Normal
T.Room.LOWER: 16°C
TIME PROG:
T.Pre.ACT: 20.6°C
T.Pre.NOM: 5.0°C
HEAT CURVE:
— — — — — — — — — — —
HEAT CIR.2 F:18
OPERAT.: TIME/AUTO
Normal
T.Room.LOWER: 16°C
TIME PROG:
T.Pre.ACT: 21.1°C
T.Pre.NOM: 5.0°C
HEAT CURVE:
— — — — — — — — — — —
HEAT. REQ F:21
— — — — — — — — — —
WW_REQ.1 F:10
REQUIREMENT:
Status: OFF
T.WW.NOM: 48°C
TIME PROG:
— — — — — — — — — — —
WW_REQ.2 F:11
REQUIREMENT:
Status: OFF
TIME PROG:
— — — — — — — — — — —
CIRCU F:16
TIME PROG:
— — — — — — — — — — —
WW_REQ.3 F:23
T.WW.ACT: 30°C
T.WW.NOM: 30°C
TIME PROG:
— — — — — — — — — — —
HQC SOLAR F:30
POWER: 10.8 kW
HEAT QUANT.: 20 kWh
FLOW: 241 l/h
T.Pre-run: 82°C
T.return: 35°C
— — — — — — — — — — —
Floor Dry F:22
— — — — — — — — — — —
CH.SWEEP F:35
FUNCTION START
HELP SERVICE
Operating the System Controller: Menu overview
Heating curve menu:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
HEAT CURVE
HEAT CIR.1
MODE:
CONTROL: Out. Temp
HEAT CURVE: Slope
Room Influenc: 0 %
Increasing
on Start: 0 %
Slope: 0.80
T.Pre.MAX: 70°C
T.Pre.MIN: 20°C
Heating times menu:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Return temp. HEAT CIR.1
Mo Tu We Th Fr Sa Su
06:30 – 22:30 20°C
00:00 – 00:00 20°C
00:00 – 00:00 20°C
Mo Tu We Th Fr Sa Su
07:30 – 00:00 20°C
00:00 – 00:00 20°C
00:00 – 00:00 20°C
Mo Tu We Th Fr Sa Su
00:00 – 00:00 20°C
00:00 – 00:00 20°C
00.00 – 00.00 20°C
Maintenance menu:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
MAINTENANCE
FUNCTION START
DES.: CH.SWEEP
Status: OFF
Run Time: 0 min
Tot. Runtime: 10 min
Burner perf.: 100%
Version display**:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
SOLVIS
SolvisControl
Operat.Syst: A2.08EN
Boot Sector: B2.07
** displayed for approx.
30 seconds after switching
on the controller
Circulation time menu*:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
TIME PROG. CIRCU
Mo Tu We Th Fr Sa Su
00.10 – 00.00
00.00 – 00.00
00.00 – 00.00
Hot water times menu*:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
TIME PROG. WW_REQ.1
Mo Tu We Th Fr Sa Su
00.10 – 00.00
00.00 – 00.00
00.00 – 00.00
Mo Tu We Th Fr Sa Su
00.00 – 00.00
00.00 – 00.00
00.00 – 00.00
Swimming pool heating times:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
TIME PROG. WW_REQ.3
Mo Tu We Th Fr Sa Su
00.00 – 00.00
Mo Tu We Th Fr Sa Su
00.00 – 00.00
*Three time blocks
Extend. ready volume*:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
TIME PROG. WW_REQ.2
Mo Tu We Th Fr Sa Su
00.00 – 00.00
00.00 – 00.00
00.00 – 00.00

P32-EN – Subject to technical changes 04.11
12
Operating the System Controller
You can adjust the factory settings to suit your individual
requirements.
If you want to adjust a value, use the rotary wheel to
position the pointer directly on the value and then
press the rotary wheel. Now turn the rotary wheel
until the required value appears and press it again
to save the adjusted value.
• “MESSAGE”: Status or error messages are displayed
first if applicable. Explanation . . . . . . . . . . . .Page 22f
• Time and date: Before setting the time, first set the date
and specify whether it is “Summertime” or “Norm. time”.
Daylight savings changes occur automatically.
• “INPUTS”: Displays temperature values for hot water
buffer (input 1), hot water (input 2), lower storage tank
(input 3), heating buffer (input 4), collector (input 8) and
external temperature (input 10). Sensor value “9999”
means that no sensor is connected or there is
sensor/cable breakage.
“-999” indicates a short circuit. In the example on the
right, the outdoor sensor is not connected. An external
temperature of 0°C is then accepted for the calculation
of the target flow temperature.
• “OUTPUTS”: Press the rotary wheel for a list of con-
nected pumps or mixers in their respective switch state
(“AUTO/OFF” or “AUTO/ON”). The appendix “AUTO/...”
stands for automatic mode.
“HEAT CIR.1/2”: Settings for heat circuits:
All functions are sensibly preset at the factory
(factory settings are provided in brackets).
• “OPERAT.”: Set the operating mode to “Time/Auto”. If a
room sensor is connected, you will see “RAS”, set the
required operating mode on the room sensor. . . . .page 15
• “Normal”: Operating status of the controller. “Normal” =
normal operation; “Lower” = lowering mode.
• “T.Room.LOWER”: Set the desired lowering temperature
(outside of the heating times, see below).
• “TIME PROG”: Call this heating times menu to set the
target room temperature and heating times.
Set the time window and room temperature . .page 35
• “T.Pre.ACT”: Actual value of the flow temperature in the
heating circuit. The display shows “9999” when no sensor
is connected.
• “T.Pre.NOM”: Current flow target temperature in the
heating circuit.
• “HEAT CURVE”: Set the slope (factory setting = 0.8) to
a value that is suitable for the building/heating system.
Setting the heat curve . . . . . . . . . . . . . . . . .page 37
.
.
.
4.2 Basic settings
Function overview:
12 3 4 5 6 7 8 9 10 11 12 13 14
Operat.Syst: A2.08EN
MESSAGE
Excess Temp
since:
20.08. at 13:38
— — — — — — — — — — —
Sa. 20. 08. 2005
Summertime: 13 : 49
— — — — — — — — — — —
INPUTS
1: T.WW.Buffer
85°C
2: T.Warm Water
45°C
3: T.Ref.Sto
81°C
4: Temp. upper
heating buffer
87°C
8: T.Collector
95°C
10: T.Outdoor
9999°C
— — — — — — — — — — —
OUTPUTS
— — — — — — — — — —
HEAT CIR.1 F:17
OPERAT.: RAS
Normal
T.Room.LOWER: 16°C
TIME PROG:
T.Pre.ACT: 25.5°C
T.Pre.NOM: 5.0°C
HEAT CURVE:
— — — — — — — — — — —
HEAT CIR.2 F:18
OPERAT.: TIME/AUTO
T.Room.LOWER: 16°C
Normal
TIME PROG:
T.Pre.ACT: 26.1°C
T.Pre.NOM: 5.0°C
HEAT CURVE:
— — — — — — — — — —

P32-EN – Subject to technical changes 04.11 13
Client
Operating the System Controller
“HEAT. REQ.”: Setting the heating requirement:
Here you can set the “ECO mode”. The boiler will
remain off for a limited time, even though the room
temperature has not been reached. You will then
use more solar energy and save fuel.
Setting the ECO mode . . . . . . . . . . . . . . . . . . .page 48.
“WW_REQ.1”: Setting hot water heating:
• “REQUIREMENT: Status”: Displays whether the hot water
requirement function is “ON” or “OFF”.
• “T.WW.NOM”: Hot water target temperature, factory
setting 48°C, maximum value 55°C otherwise the plate
heat exchanger may show lime deposits.
• “TIME PROG”: Calls the time menu for the auxiliary
heating of the hot water storage tank (factory setting:
Mo-Su: 24 hours; see also page 17)
set requested times, if necessary . . . . . . . . .page 43
“WW_REQ.2”: Increasing the hot water supply:
• “REQUIREMENT: Status”: As with “WW_REQ.1”.
• “TIME PROG”: By entering the standby times (factory
setting: Mo. – Su. deactivated) you can increase the hot
water supply if there is an increased demand. page 44
“CIRCU”: Setting the circulation circuit
• “TIME PROG”: Open the circulation times menu. (Factory
setting: Mo-Su: 24 hours; page 17)
set requested times, if necessary . . . . . . . . . .page 46
“WW_REQ.3”: Setting the swimming pool heater:
• “T.WW.ACT”: Actual temperature, swimming pool.
• “T.WW.NOM”: Nominal swimming pool temperature,
factory setting 30°C.
• “TIME PROG”: Calls the time menu for the auxiliary
heating of the swimming pool (factory setting: Mo-Su:
deactivated)
set required times, if necessary . . . . . . . . . . .page 45
“HQC SOLAR”: Heat quantity counter solar circuit
To use this function, a volume flow measuring unit
(section 4.3, next page) must be installed in the
secondary solar line.
• “POWER”: Current heat output in kW.
• “HEAT QUANTITY”: Infed heat in kWh.
• “FLOW”: Volume flow in l/h.
• “T.Pre-run”: Flow temperature in solar circuit in °C.
• “T.return”: Return temperature in solar circuit in °C.
“FLOOR DRY”: Floor drying heating program
for heat circuit 1. . . . . . . . . . . . . . . . . . . . . . . .page 59
Maintenance function:
• “CH.SWEEP”: Test operation of the burner, e.g. for
measuring exhaust gases. . . . . . . . . . . . . . . .page 32
— — — — — — — — — — —
HEAT. REQ F:21
— — — — — — — — — — —
WW_REQ.1 F:10
REQUIREMENT:
Status: OFF
T.WW.NOM: 48°C
TIME PROG:
— — — — — — — — — — —
WW_REQ.2 F:11
REQUIREMENT:
Status: OFF
TIME PROG:
— — — — — — — — — — —
CIRCU F:16
TIME PROG:
— — — — — — — — — — —
WW_REQ.3 F:23
T.WW.ACT: 30°C
T.WW.NOM: 30°C
TIME PROG:
— — — — — — — — — — —
HQC SOLAR F:30
POWER: 0.00 kW
HEAT QUANT.:
0.0 kWh
FLOW: 0 l/h
T.Pre-run: 65°C
T.return: 38°C
— — — — — — — — — — —
FLOOR DRY F:22
NOM. VALUE: 5°C
— — — — — — — — — — —
CH.SWEEP F:35
FUNCTION START
HELP SERVICE

P32-EN – Subject to technical changes 04.11
14
Operating the System Controller
Volume flow encoder VSG 2,5
Room sensor RS-SC
4.3 Accessories
• Temperature sensor SolvisControl TF-SC
as flow sensor for heat circuit 1 (S12), heat circuit 2
(S13) , as circulation sensor (S11) or as hot water
return sensor lets you control the hot water circulation
with SolvisControl. With 3 m connection cable, including
heat-conducting paste, cable ties and insulation bush.
If S11 is connected, you may have to set the times for
circulation. . . . . . . . . . . . . . . . . . . . . . . . . . .page 46
• Volume flow encoder VSG-2,5 (figure on right)
for connection to SolvisControl, input S15. This allows
you to measure and display the current heat output
and the accepted heat quantity in the secondary solar
circuit.
Suitable for up to 1.5 m³/h. Including screw connections
for 18 and 10 CU pipe (solar line).
The impulse rate of the volume flow encoder is
0.5 l/Imp. and is installed on the relevant input (S15)
of the SolvisControl at the factory.
If you are using an on-site volume flow encoder, you will
have to set the impulse rate at input S15. . . .page 30
• Room sensor RS-SC (figure on right)
lets you set the room temperature and heating program
in a room that is far removed from the controller.
Set the controller after installation of the controller
(at input S16). . . . . . . . . . . . . . . . . . . . . . . . .page 27
Limitation:
- You can connect only one room sensor.
- You may only operate this sensor at heat circuit 1.
- You are no longer able to heat a swimming pool.
You can also use the room sensor to control the
room temperature in the respective room based
on the flow temperature so that it takes into con-
sideration external heat sources such as a fire-
place or sun exposure. All radiator valves in that
room have to be open for that purpose. You will
also have to set the so-called “room influence
factor” on the SolvisControl. More information in
section “4.4 Using the room sensor”. .page 16

P32-EN – Subject to technical changes 04.11 15
Operating the System Controller
Client
4.4 Using the room sensor (accessory)
You use the room sensor to conveniently set the room
temperature and heating program (figure on right) without
having to go to the heating system.
If it is too cold, for example, even when the radiator valves
are open, you can increase the room temperature by
turning the adjustment wheel clockwise. If it is too warm,
you turn the adjustment wheel anti-clockwise.
Taking the room temperature into consideration:
The room influence factor was set to zero at the factory so
that the flow temperature is independent of the room tem-
perature and is only set by the heat curve depending on
the outside temperature. Any heat emission from external
heat sources (e.g. fireplace or sun exposure) is to be
offset by thermostat valves so that the room temperature
remains constant. However, the flow temperature remains
too high when compared to the outside temperature
resulting in more losses. You would save more energy if
you lowered the flow temperature to keep the room tem-
perature constant when there is an additional heat supply.
This can be accomplished with the room sensor. By setting
the room influence factor to values greater than 0%, you
can control the influence of the measured room tempera-
ture on the value of the flow temperature. This works only
if the valves on the radiators in the room are fully open.
If you set the room influence factor to the maximum value
of 90%, the flow temperature will basically be calculated
based on the measured room temperature. The flow tem-
perature is then influenced by external heat sources so
that rooms without room sensors may not be heated ade-
quately any longer, for example, because they are located
on the cooler north side of the house.
Setting the room influence factor
The room influence factor was set to 0% at the factory. To
save energy by altering the flow temperature, you will have
to change the room influence factor when there are room
sensors installed to 50% at the controller as follows:
•Changing the room temperature
by plus/minus 5°C
• Selection of the following heating programs:
- Standby mode . . . . . . . . . . . . .
- Night (lowering) mode . . . . . . . .
- Normal mode . . . . . . . . . . . . . .
- Automatic mode . . . . . . . . . . . .
Turn the adjustment wheel until you see the entry “HEAT
CURVE” of heating circuit 1 and press the adjustment
wheel.
Now turn the adjustment wheel to the entry “Room
influenc: 0%”. Press the adjustment wheel and set the
desired value by turning the adjustment wheel. Press the
adjustment wheel once at the end to save the value.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
HEAT CURVE
BACK
Room Influenc: 50%
Increasing
on Start: 0%
At the pointer position 

set the room influence
factor
You need to adjust the controller after installation
of the room sensor. . . . . . . . . . . . . . . . .page 27
.

P32-EN – Subject to technical changes 04.11
16
Operating the System Controller
4.5 Overview of time programs
Use the following tables to plan the heating of rooms to a
target temperature, the times for auxiliary heating of the
hot water buffer, the operation of the circulation pump and
the heating of swimming pool water, then transfer the infor-
mation to your controller.
For the heating circuits, you can define 3 time blocks with
3 heating times, where an individual target temperature
can be set for each time period (page 35). The auxiliary
heating times for hot water heating (page 43) and standby
times for circulation (page 46) can be defined using 3 time
blocks with 3 time windows each. You can set two time
windows for swimming pool heating (page 45).
You must first decide on which weekdays the common
time windows are to be valid and then enter them. To do
this, select the appropriate days of the week and set the
time window.
The following tables give an overview of the heating times,
hot water times and circulation times that have been set.
Explanation of tables:
Each time block has three different time periods (heating
times). Define the days of the week on which each time
block applies.
•An “X” indicates that the weekday is activated for this
time block. The corresponding weekday is highlighted in
black in the heating times menu.
•“–” indicates that the weekday is inactive for this time
block.
Use the time programs to save energy. Adjust the
times to match your routine.
Valid days of the week for the time block Heating time Heating time Heating time
Mo Tu We Th Fr Sa Su from till °C from till °C from till °C
Time block 1
Factory setting X X X X X – – 06:30 22:30 20 00:00 00:00 20 00:00 00:00 20
Setting: Heat Cir. 1
Heat Cir. 2
Time block 2
Factory setting -– – – – – X X 07:30 00:00 20 00:00 00:00 20 00:00 00:00 20
Setting: Heat Cir. 1
Heat Cir. 2
Time block 3
Factory setting -– – – – – – – 00:00 00:00 20 00:00 00:00 20 00:00 00:00 20
Setting: Heat Cir. 1
Heat Cir. 2
Time programs for heat circuits “HEAT CIR.1” and “HEAT CIR.2”
(setting values for room temperature (“°C”) and time windows (“from” and “till”) for maintaining it)

P32-EN – Subject to technical changes 04.11 17
Client
Operating the System Controller
“WW_REQ.1” time program (auxiliary heating times for hot water buffer)
“CIRCU.” time program (time program for standby times of the circulation pump)
Time block 2
Factory setting – – – – – – – 00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Time block 3
Factory setting – – – – – – – 00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Time block 2
Factory setting – – – – – – – 00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Time block 3
Factory setting – – – – – – – 00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Days of the week that are valid for the time block Operating time 1 Operating time 2 Operating time 3
Mo Tu We Th Fr Sa Su from till from till from till
Time block 1
Factory setting 00:10 00:00 00:00 00:00 00:00 00:00
Own setting
Valid days of the week for the time block Heating time 1 Heating time 2 Heating time 3
Mo Tu We Th Fr Sa Su from till from till from till
Time block 1
Factory setting 00:10 00:00 00:00 00:00 00:00 00:00
Own setting
“WW_REQ.2” time program (times for an increased hot water supply)
Time block 2
Factory setting –––––––00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Time block 3
Factory setting –––––––00:00 00:00 00:00 00:00 00:00 00:00
Own setting
Valid days of the week for the time block Heating time 1 Heating time 2 Heating time 3
Mo Tu We Th Fr Sa Su from till from till from till
Time block 1
Factory setting –––––––00:00 00:00 00:00 00:00 00:00 00:00
Own setting
“WW_REQ.3” time program (times for heating a swimming pool)
Days of the week that are valid for the time block Heating time 1
Mo Tu We Th Fr Sa Su from till
Time block 1
Factory setting –––––– –00:00 00:00
Own setting
Time block 2
Factory setting – – – – – – –00:00 00:00
Own setting

P32-EN – Subject to technical changes 04.11
18
Maintenance and Care
5 Maintenance and Care
Wipe off any dirt from the SolvisStrato using a damp cloth.
Do not use any solvents to clean the SolvisStrato.
Heating systems must be maintained regularly according
to the German Energy Conservation regulations (EnEV).
We recommend that you have your local local specialist
perform maintenance annualy. The necessary maintenance
work is described in the installation instructions.

P32-EN – Subject to technical changes 04.11 19
Client
19
Troubleshooting
6 Troubleshooting
If the boiler does not start up, check that there is a
heating requirement (see page 9). If there is no heating
requirement but you believe that there should be one,
make sure that the time is set correctly (page 12). Next,
check the time programs: the heating circuit, water heating
or the circulation may be outside of the time windows
(page 16f). If the circulation is not working, make sure
that the operating mode is set to “Time” (page 46).
Finally, have a look at the top line on the display and
make sure that there is a hand symbol under one of
the numbers (figure on right). If there is a hand symbol,
the relevant output is set to manual mode and must
be switched to automatic mode (page 28).
If the SolvisControl display no longer responds when
you turn the rotary wheel, switch the control off,
wait 20 seconds, and then switch it back on again.
Many problems can be resolved in this way. If there
is a heating requirement but the boiler does not start up,
the boiler may have a malfunction. Check whether it is
switched on and press the unlocking button on the boiler’s
automatic firing system, if necessary. Follow the instruc-
tions in the relevant operating instructions.
123 45678910
Operat.Syst: Ax
Section of SolvisControl display field. Overview of
outputs 1-10. For example, outputs 6 and 7 (solar
pumps) on this display are set to manual mode
(“HAND”). When they are switched to “AUTO”,
the hand symbol disappears.

P32-EN – Subject to technical changes 04.11
20
Troubleshooting
Problem Cause Remedy
Room temperature too cold
Controller is switched off
Switch the main switch at the control console to
on, if necessary.
Switch the heating emergency switch to on,
if necessary.
Check the main fuse for the heating system.
Malfunction message on the auto-
matic firing system of the external
burner
Resume external burner operation.
If the burner repeatedly switches off, inform the
company responsible for the installation of the
boiler.
Radiator is not warm enough Open the radiator valve some more**.
The room temperature cannot be set
using the radiator valve
Increase the target room temperature in the time
program of the heating circuit*(see page 35).
If necessary, change the slope *,
see table on page 21.
Notify the company responsible for installation
if you cannot resolve the problem.
Room temperature too warm
Radiator too hot Close the radiator valve some more**.
All rooms are overheated or the refer-
ence room is too warm**
Decrease the target room temperature in the time
program of the heating circuit*(see page 35).
If necessary, change the slope *,
see table on page 21.
If necessary, switch the mixer to “AUTO”
(page 28).
Notify the company responsible for installation
if you cannot resolve the problem.
The reference room is always
too warm or too cold** The heat curve is set incorrectly Another heating curve must be set, see table on page 21.
Hot water temperature is too
low even though the storage
tank is warm
T.WW.NOM is set too low Set T.WW.NOM (page 13).
Air in the storage tank Bleed the storage tank (notify installer)
*Each time after a setting has been changed on the system controller, you should wait a while (one or more days) before
making any further changes. As a result of physical conditions, changes to the parameters in the control system can
often cause fluctuations of the control area (room temperature), which, depending on the existing conditions, can reach
a constant value relatively quickly.
** First of all, open all the heating valves fully. If all rooms are too warm or too cold, change the heating curve accordingly
on the system controller. If one or more rooms have the correct temperature and the other rooms are too warm, the
heating valves must be closed some more in these rooms. There must always be at least one room in which the
heating valves are fully opened (reference room). This is usually the room that is most difficult to heat.
6.1 Problems with the room temperature