Resol DeltaSol BS Plus User manual

*48005931* 48005931
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual safe.
DeltaSol®BS Plus
www.resol.com
Manual
en
Solar controller
Manual for the
specialised craftsman
Installation
Operation
Functions and options
Troubleshooting
(Version 2)
The cTUVus certication conrms that
the controller is certied to UL 60730-
1:2009 and CSA B60730.1:2002.
The Internet portal for easy and secure access to
your system data – www.vbus.net

2
en
© 20180731_48005931_DeltaSol_BS_Plus_V2.monen_neu
Safety advice
Please pay attention to the following safety advice in order to avoid danger and
damage to people and property.
Instructions
Attention must be paid to the valid local standards, regulations and directives!
Information about the product
Proper usage
The solar controller is designed for electronically controlling standard solar thermal
systems in compliance with the technical data specied in this manual.
Improper use excludes all liability claims.
CE Declaration of conformity
The product complies with the relevant directives and is therefore la-
belled with the CE mark. The Declaration of Conformity is available on
request, please contact the manufacturer.
Note
Strong electromagnetic elds can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic elds.
Target group
These instructions are exclusively addressed to authorised skilled personnel.
Only qualied electricians are allowed to carry out electrical works.
Initial commissioning must be effected by the system installer or qualied personnel
named by the system installer.
Description of symbols
WARNING! Warnings are indicated with a warning triangle!
ÎThey contain information on how to avoid the dan-
ger described.
Signal words describe the danger that may occur, when it is not avoided.
• WARNING means that injury, possibly life-threatening injury, can occur.
• ATTENTION means that damage to the appliance can occur.
Note
Notes are indicated with an information symbol.
ÎArrows indicate instruction steps that should be carried out.
Disposal
• Dispose of the packaging in an environmentally sound manner.
• At the end of its working life,the product must not be disposed of as urban waste.
Old appliances must be disposed of by an authorised body in an environmentally
sound manner. Upon request we will take back your old appliances bought from
us and guarantee an environmentally sound disposal of the devices.
Subject to technical change. Errors excepted.

3
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1 Overview ..............................................................................................4
2 Installation ...........................................................................................5
2.1 Mounting........................................................................................................................5
2.2 Electrical connection...................................................................................................6
2.3 Data communication / Bus..........................................................................................6
2.4 System overview ..........................................................................................................7
2.5 Systems...........................................................................................................................8
3 Operation and function ....................................................................34
3.1 Buttons.........................................................................................................................34
4 System-Monitoring-Display ..............................................................34
4.1 System screen.............................................................................................................35
4.2 Other indications.......................................................................................................35
5 Commissioning..................................................................................36
6 Channel overview ..............................................................................38
6.1 Display channels .........................................................................................................38
6.2 Adjustment channels.................................................................................................41
7 Troubleshooting.................................................................................51
8 Accessories ........................................................................................54
8.1 Sensors and measuring instruments......................................................................55
8.2 VBus®accessories......................................................................................................55
8.3 Interface adapters ......................................................................................................56
8.4 Accessories .................................................................................................................56
9 Index ...................................................................................................57
Contents
DeltaSol®BS Plus Solar controller
The DeltaSol®BS Plus is our most versatile controller for simple standard solar
thermal and heating systems.The intuitive commissioning menu leads you through
the initial conguration in only 6 steps.
The system selected is shown on the display, the status of the individual compo-
nents is indicated by means of ashing codes.

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1 Overview
• 10 basic systems to choose from
• Heat quantity measurement
• Function control
• Optional thermostat function (time-controlled), thermal disinfection
function, drainback function
• Commissioning menu
• Unit °F and °C selectable
• HE pump control via adapter (see page 49)
Technical data
Inputs: 4 Pt1000 temperature sensors
Outputs: 2 semiconductor relays
Switching capacity: 1 (1) A 240 V~ (semiconductor relay)
Total switching capacity: 2 A 240 V~
Power supply: 100 … 240 V~ (50 … 60 Hz)
Supply connection: type Y attachment
Standby: 0.38 W
Temperature controls class: I
Energyefciencycontribution:1 %
Mode of operation: type 1.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®
VBus®current supply: 35 mA
Functions: function control,operating hours counter, tube collector function, ther-
mostat function, speed control and heat quantity measurement
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, also suitable for mounting into patch panels
Indication / Display: System-Monitoring-Display for visualisation of systems,
16-segment and 7-segment display, 8 symbols for indication of system status and
operating control LED
Operation: 3 push buttons at the front of the housing
Protection type: IP 20 / DIN EN 60529
Protection class: II
Ambient temperature: 0 … 40 °C [32 … 104 °F]
Degree of pollution: 2
Dimensions: 172 x 110 x 49 mm
104 mm
4.1“
130 mm
5.1“
2.6"
66 mm
4.3"
110 mm
6.8"
172 mm
1.1"
28 mm
0.4" / 11 mm
1.9" / 47 mm
0.5" / 13 mm
6.1"
155 mm
Upper fastening
Lower fastening

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5
InstallationIndications, functions and optionsMessages Commissioning Operation and function
2 Installation
2.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note
Strong electromagnetic elds can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic elds.
The device must only be located in dry interior rooms.
The controller must additionally be supplied from a double pole switch with contact
gap of at least 3 mm.
Please pay attention to separate routing of sensor cables and mains cables.
In order to mount the device to the wall, carry out the following steps:
ÎUnscrew the crosshead screw from the cover and remove it along with the
cover from the housing.
ÎMark the upper fastening point on the wall. Drill and fasten the enclosed wall
plug and screw leaving the head protruding.
ÎHang the housing from the upper fastening point and mark the lower fastening
point (centres 130 mm).
ÎInsert lower wall plug.
ÎFasten the housing to the wall with the lower fastening screw and tighten.
ÎCarry out the electrical wiring in accordance with the terminal allocation (see
page 6).
ÎPut the cover on the housing.
ÎAttach with the fastening screw.
12
34
56
130 mm
Electrical connection see page 6.

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6
Installation Indications, functions and options MessagesCommissioningOperation and function
2.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic com-
ponents!
ÎTake care to discharge properly before touching the
inside of the device!
Note
Connecting the device to the power supply must always be the last step
of the installation!
Note
It must be possible to disconnect the device from the mains at any time.
ÎInstall the mains plug such that it is accessible at any time.
ÎIf this is not possible, install a switch that can be accessed.
Do not use the device if it is visibly damaged!
The power supply of the device must be 100 … 240 V~ (50 … 60 Hz). Attach exible
cables to the housing with the enclosed strain relief and the corresponding screws.
The controller is equipped with 2 semiconductor relays to which loads such as
pumps, valves, etc. can be connected:
• Relay 1,
also designed for pump speed control
• Relay 2,
also designed for pump speed control
18 = Conductor R1 16 = Conductor R2
17 = Neutral conductor N 15 = Neutral conductor N
13 = Grounding terminal ⌯14 = Grounding terminal ⌯
Note
If loads which are not speed-controlled (e.g. valves) are used, the speed
must be set to 100%.
Connect the temperature sensors (S1 to S4) to the following terminals with
either polarity:
1 / 2 = Sensor 1 (e. g. collector sensor)
3 / 4 = Sensor 2 (e. g. store sensor)
5 / 6 = Sensor 3 (e. g. store sensor top)
7 / 8 = Sensor 4 (e. g. return sensor)
The mains connection is at the following terminals:
19 = Neutral conductor N
20 = Conductor L
12 = Grounding terminal ⌯
VBus®
R1
12
IP 20
10987654321
S1
DE-45527 Hattingen
DeltaSol BS Plus V2
Made in Germany
Temp. Sensor Pt1000
S2 S3 S4 NR2NR1 NL
VBus
13 14 15 16 17 18 19 20
T4A
100 ... 240 V~
50-60 Hz
CU 72091163 01
1 (1) A (100 ... 240)V~
1 (1) A (100 ... 240)V~
R2
mains terminals
fuse
load terminals
sensor terminals grounding terminals
2.3 Data communication / Bus
The controller is equipped with the RESOL VBus®for data transfer and energy
supply to external modules. The connection is to be carried out at the terminals
marked VBus (any polarity).
One or more RESOL VBus®modules can be connected via this data bus, such as:
• RESOL DL2 Datalogger
• RESOL DL3 Datalogger
• VBus® / PWM interface adapter
Furthermore, the controller can be connected to a PC or integrated into a network
via the RESOL VBus®
/ USB or VBus® / LAN interface adapter (not included). Differ-
ent solutions for visualisation and remote parameterisation are available on the
RESOL website www.resol.com.
Note
More accessories on page 54.

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
1
Standard solar system (page 8)
5
Solar system with 2 stores and valve logic
(page 20)
9
Solar system with heating circuit return
preheating (page 30)
2
Solar system with heat exchange (page 10)
6
Solar system with 2 stores and pump logic
(page 22)
10
Standard solar system with heat dump
(page 32)
3
Solar system with afterheating (page 14)
7
Solar system with east-/west collectors and 1
store (page 24)
4
Solar system with store loading in layers
(page 18)
8
Solar system with afterheating by solid fuel
boiler (page 26)
2.4 System overview

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Installation Indications, functions and options MessagesCommissioningOperation and function
910
VBus
2.5 Systems
Arrangement 1: Standard solar system
The controller calculates the temperature difference between collector sensor S1
and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by relay
1, and the store will be loaded until the switch-off temperature difference (DT F) or
the maximum store temperature (S MX) is reached.
Sensors S3 and S4 can optionally be connected for measurement purposes. S3 can
optionally be used as the reference sensor for the store emergency shutdown op-
tion (OSEM).
If heat quantity measurement (OHQM) is activated, S4 is to be used as the return
sensor.
If the drainback option (ODB) is activated, relay 2 can be used for activating a
booster pump. For this purpose, the booster function (OBST) has to be activated.
S1
S2
S4 / TR
R1 S3 Example
Drainback system
(with booster pump)
S1
S3
S2
S4/TR
R1 R2

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Display channels
Channel Description Connection terminal Page
INIT x* ODB initialisation active - 38
FLL x* ODB lling time active - 38
STAB x* ODB stabilisation in progress - 38
COL x Temperature collector S1 38
TST x Temperature store S2 38
S3 x Temperature sensor 3 S3 39
TSTT x* Temperature store top S3 38
S4 x Temperature sensor 4 S4 39
TR x* Temperature return sensor S4 38
n % x Speed R1 R1 39
hP x Operating hours R1 R1 40
hP1 x* Operating hours R1 (if OBST is activated) R1 40
hP2 x* Operating hours R2 (if OBST is activated) R2 40
kWh x* Heat quantity in kWh - 39
MWh x* Heat quantity in MWh - 39
TIME x Time -40
Adjustment channels
Channel Description Factory setting Page
Arr x System 1 41
DT O xSwitch-on temperature difference 6.0 K [12.0 °Ra] 41
DT F xSwitch-off temperature difference 4.0 K [8.0 °Ra] 41
DT S x Set temperature difference 10.0 K [20.0 °Ra] 42
RIS x Rise R1 2 K [4 °Ra] 42
nMN x Minimum speed 30 % 42
S MX x Maximum store temperature 60 °C [140 °F] 42
OSEM xStore emergency shutdown option OFF 43
EM x
Collector emergency temperature 130 °C [270 °F] 43
Collector emergency temperature, if OBST is
activated:
95 °C [200 °F] 43
OCC x Collector cooling option OFF 43
CMX x* Maximum collector temperature 110 °C [230 °F] 43
OSYC x System cooling option OFF 44
DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 44
DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 44
OSTC x Store cooling option OFF 44
OHOL x* Holiday cooling option OFF 44
THOL x* Holiday cooling temperature 40 °C [110 °F] 44
Adjustment channels
Channel Description Factory setting Page
OCN x Collector minimum limitation option OFF 45
CMN x* Collector minimum temperature 10 °C [50 °F] 45
OCF x Antifreeze option OFF 45
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 45
OTC x Tube collector option OFF 47
TCST x* OTC starting time 07:00 47
TCEN x* OTC ending time 19:00 47
TCRU x* OTC runtime 30 s 47
TCIN x* OTC standstill interval 30 min 47
OHQM xHeat quantity measurement option OFF 47
FMAX x* Maximum ow rate 6.0 l 47
MEDT x* Heat transfer uid / Antifreeze type 1 48
MED% x* Antifreeze concentration
(only if MEDT = propylene or ethylene)
45 % 48
ODB xDrainback option OFF 48
tDTO x* ODB switch-on condition - time period 60 s 48
tFLL x* ODB lling time 5.0 min 49
tSTB x* ODB stabilisation time 2.0 min 49
OBST s* Option booster function OFF 49
MAN1 x Manual mode R1 Auto 49
MAN2 x Manual mode R2 Auto 49
ADA1 xHE pump control OFF 49
LANG x Language dE 50
UNIT x Temperature unit °C 50
RESE x Reset - back to factory settings 50
######## Version number
Legend:
Symbol Description
x Channel is available
x* Channel is available, if the corresponding option is activated.
s* System-specic channel, only available if the corresponding option is activated

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Installation Indications, functions and options MessagesCommissioningOperation and function
Arrangement 2: Solar system with heat exchange
The controller calculates the temperature difference between collector sensor S1
and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by relay
1, and the store will be loaded until the switch-off temperature difference (DT F) or
the maximum store temperature (S MX) is reached.
Heat exchange from store 1 to store 2 will be operated by relay 2, if the tem-
perature difference between sensors S3 and S4 is larger than or identical to the
adjusted switch-on temperature difference (DT3O), until the adjusted minimum
(MN3O) and maximum (MX3O) temperature thresholds of the respective stores
are reached. S3 can optionally be used as the reference sensor for the store emer-
gency shutdown option (OSEM).
910
VBus
S1
S3
S4
R1
R2
S2
Store 1 Store 2

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Display channels
Channel Description Connection terminal Page
INIT x* ODB initialisation active - 38
FLL x* ODB lling time active - 38
STAB x* ODB stabilisation in progress - 38
COL x Temperature collector S1 38
TST1 x Temperature store 1 base S2 38
TSTT x Temperature store 1 top S3 38
TST2 x Temperature store 2 base S4 38
n1 % x Speed R1 R1 39
n2 % x Speed R2 R2 39
h P1 x Operating hours R1 R1 40
h P2 x Operating hours R2 R2 40
TIME x Time -40
Adjustment channels
Channel Description Factory setting Page
Arr x System 2 41
DT O xSwitch-on temperature difference 6.0 K [12.0 °Ra] 41
DT F xSwitch-off temperature difference 4.0 K [8.0 °Ra] 41
DT S x Set temperature difference 10.0 K [20.0 °Ra] 42
RIS x Rise R1 2 K [4 °Ra] 42
n1MN x Minimum speed R1 30 % 42
S MX x Maximum store temperature 60 °C [140 °F] 42
OSEM x Store emergency shutdown option OFF 43
n2MN s Minimum speed R2 30 % 42
EM x
Collector emergency temperature 130 °C [270 °F] 43
Collector emergency temperature, if OBST is
activated:
95 °C [200 °F] 43
OCC x Collector cooling option OFF 43
CMX x* Maximum collector temperature 110 °C [230 °F] 43
OSYC x System cooling option OFF 44
DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 44
DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 44
OSTC x Store cooling option OFF 44
OHOL x* Holiday cooling option OFF 44
THOL x* Holiday cooling temperature 40 °C [110 °F] 44
OCN x Collector minimum limitation option OFF 45
CMN x* Collector minimum temperature 10 °C [50 °F] 45
OCF x Antifreeze option OFF 45
Adjustment channels
Channel Description Factory setting Page
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 45
OTC x Tube collector option OFF 47
TCST x* OTC starting time 07:00 47
TCEN x* OTC ending time 19:00 47
TCRU x* OTC runtime 30 s 47
TCIN x* OTC standstill interval 30 min 47
DT3O sSwitch-on temperature difference 3 6.0 K [12.0 °Ra] 41
DT3F sSwitch-off temperature difference 3 4.0 K [8.0 °Ra] 41
DT3S s Set temperature difference 3 10.0 K [20.0 °Ra] 42
RIS3 s Rise R2 2 K [4 °Ra] 42
MX3O s Switch-on threshold for maximum temperature 60.0 °C [140.0 °F] 29
MX3F s Switch-off threshold for maximum temperature 58.0 °C [136.0 °F] 29
MN3O s Switch-on threshold for minimum temperature 5.0 °C [40.0 °F] 29
MN3F s Switch-off threshold for minimum temperature 10.0 °C [50.0 °F] 29
ODB xDrainback option OFF 48
tDTO x* ODB switch-on condition - time period 60 s 48
tFLL x* ODB lling time 5.0 min 49
tSTB x* ODB stabilisation time 2.0 min 49
MAN1 x Manual mode R1 Auto 49
MAN2 x Manual mode R2 Auto 49
ADA1 xHE pump control OFF 49
ADA2 xHE pump control OFF 49
LANG x Language dE 50
UNIT x Temperature unit °C 50
RESE x Reset - back to factory settings 50
######## Version number
Legend:
Symbol Description
x Channel is available
x* Channel is available, if the corresponding option is activated.
s* System-specic channel, only available if the corresponding option is activated

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Installation Indications, functions and options MessagesCommissioningOperation and function
System-specicfunctions
The following adjustments are used for the specic functions in system 2.
∆T control for the heat exchange between 2 stores
DT3O
Switch-on temperature difference
Adjustment range:
1.0 … 20.0 K [2.0 … 40.0 °Ra]
Factory setting: 6.0 K [12.0 °Ra]
DT3F
Switch-off temperature difference
Adjustment range:
0.5 … 19.5 K [1.0 … 39.0 °Ra]
Factory setting: 4.0 K [8.0 °Ra]
S3 and S4 are used as the reference sensors for this function.
In system 2 the controller is equipped with an additional differential control for heat
exchange between two stores.The basic differential function is adjusted using the
switch-on (DT3O) and switch-off (DT3F) temperature differences.
When the temperature difference exceeds the adjusted switch-on temperature
difference, relay 2 switches on. When the temperature difference falls below the
adjusted switch-off temperature difference, relay 2 switches off.
Note
The switch-on temperature difference must be at least 0.5 K [1 °Ra] higher
than the switch-off temperature difference.
Speed control
DT3S
Set temperature difference
Adjustment range:
1.5 … 30.0 K [3.0 … 60.0 °Ra]
Factory setting: 10.0 K [20.0 °Ra]
RIS3
Rise
Adjustment range: 1 … 20 K [2 … 40 °Ra]
Factory setting: 2 K [4 °Ra]
If the temperature difference reaches or exceeds the switch-on temperature differ-
ence, the pump switches on at 100 % speed for 10 s.Then, the speed is reduced to
the minimum pump speed value.
If the temperature difference reaches the adjusted set value, the pump speed in-
creases by one step (10%).The response of the controller can be adapted via the
parameter Rise. Each time the difference increases by the adjustable rise value, the
pump speed increases by 10% until the maximum pump speed of 100% is reached.
If the temperature difference decreases by the adjustable rise value, pump speed
will be decreased by one step.
Note
For pump speed control of the heat exchange pump, the operating mode
of relay 2 must be set to Auto in the adjustment channel MAN2.
Note
The set temperature difference must be at least 0.5 K [1 °Ra] higher than
the switch-on temperature difference.

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Minimum speed
n2MN
Minimum speed
Adjustment range: 30 … 100 %
Factory setting: 30 %
In the adjustment channel n2MIN a relative minimum speed for a pump connected
can be allocated to the output R2.
Note
When loads which are not speed-controlled (e. g. valves) are used, the
value n2MN must be set to 100% to deactivate pump speed control.
Maximum temperature limitation heat exchange
MX3O MX3F
Maximum temperature limitation
Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F]
Factory setting:
MX3O: 60.0 °C [140.0 °F] MX3F: 58.0 °C [136.0 °F]
Minimum and maximum temperature limits can be set for the heat exchange func-
tion.
S4 is used as the reference sensor for the maximum temperature limi-
tation.
The maximum temperature limitation function provides a maximum temperature
setting, usually to reduce scald risk in a store. If MX3O is exceeded, relay 2 is
switched off until the temperature at sensor 4 falls below MX3F.
Minimum temperature limitation heat exchange
MN3O MN3F
Minimum temperature limitation
Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F]
Factory setting: (only if Arr = 2):
MN3O: 5.0 °C [40.0 °F] MN3F: 10.0 °C [50.0 °F]
S3 is used as the reference sensor for the minimum temperature limi-
tation.
The minimum temperature limitation function provides a minimum temperature
setting for the heat source in system 2. If the temperature at sensor 3 falls below
MN3O, relay 2 is switched off until the temperature at sensor 3 exceeds MN3F.
Both switch-on and switch-off temperature differences DT3O and DT3F are valid
for the maximum and minimum temperature limitation.

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Installation Indications, functions and options MessagesCommissioningOperation and function
Arrangement 3: Solar system with afterheating
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by relay
1, and the store will be loaded until the switch-off temperature difference (DT F)
or the maximum store temperature (S MX) is reached.
Sensor S3 is used for a thermostat function, which operates relay 2 for afterheating
or heat dump purposes, when the adjusted thermostat switch-on temperature
(AH O) is reached. This function can optionally be combined with up to three
adjustable time frames.
Sensor S3 can optionally be used as the reference sensor for the thermal disinfec-
tion function (OTD) or the store emergency shutdown option (OSEM).
Sensor S4 can optionally be connected for measurement purposes. If heat quantity
measurement (OHQM) is activated, S4 is to be used as the return sensor.
910
VBus
R2
S1
S2
R1
S3
S4 / TR

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Display channels
Channel Description Connection terminal Page
INIT x* ODB initialisation active - 38
FLL x* ODB lling time active - 38
STAB x* ODB stabilisation in progress - 38
COL x Temperature collector S1 38
TSTB x Temperature store 1 base S2 38
TSTT x Temperature store 1 top S3 38
TDIS s* Thermal disinfection temperature
(thermal disinfection)
S3 17
S4 x Temperature sensor 4 S4 39
TR x* Temperature return sensor S4 38
n1 % x Speed R1 R1 39
h P1 x Operating hours R1 R1 40
h P2 x Operating hours R2 R2 40
kWh x* Heat quantity in kWh - 39
MWh x* Heat quantity in MWh - 39
CDIS s* Countdown of monitoring period
(thermal disinfection)
-40
SDIS s* Starting time display (thermal disinfection) -39
DDIS s* Heating period display (thermal disinfection) -39
TIME x Time -40
Adjustment channels
Channel Description Factory setting Page
Arr x System 3 41
DT O xSwitch-on temperature difference 6.0 K [12.0 °Ra] 41
DT F xSwitch-off temperature difference 4.0 K [8.0 °Ra] 41
DT S x Set temperature difference 10.0 K [20.0 °Ra] 42
RIS x Rise R1 2 K [4 °Ra] 42
n1MN x Minimum speed R1 30 % 42
S MX x Maximum store temperature 60 °C [140 °F] 42
OSEM xStore emergency shutdown option OFF 43
EM x
Collector emergency temperature 130 °C [270 °F] 43
Collector emergency temperature, if OBST is
activated:
95 °C [200 °F] 43
OCC x Collector cooling option OFF 43
CMX x* Maximum collector temperature 110 °C [230 °F] 43
OSYC x System cooling option OFF 44
DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 44
DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 44
OSTC x Store cooling option OFF 44
OHOL x* Holiday cooling option OFF 44
THOL x* Holiday cooling temperature 40 °C [110 °F] 44
Adjustment channels
Channel Description Factory setting Page
OCN x Collector minimum limitation option OFF 45
CMN x* Collector minimum temperature 10 °C [50 °F] 45
OCF x Antifreeze option OFF 45
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 45
OTC x Tube collector option OFF 47
TCST x* OTC starting time 07:00 47
TCEN x* OTC ending time 19:00 47
TCRU x* OTC runtime 30 s 47
TCIN x* OTC standstill interval 30 min 47
OHQM xHeat quantity measurement option OFF 47
FMAX x* Maximum ow rate 6.0 l 47
MEDT x* Heat transfer uid / Antifreeze type 1 48
MED% x* Antifreeze concentration 45 % 48
AH O sSwitch-on temperature for thermostat 1 40 °C [110 °F] 16
AH F sSwitch-off temperature for thermostat 1 45 °C [120 °F]16
t1 O s Thermostat switch-on time 1 00:00 16
t1 F s Thermostat switch-off time 1 00:00 16
t2 O s Thermostat switch-on time 2 00:00 16
t2 F s Thermostat switch-off time 2 00:00 16
t3 O s Thermostat switch-on time 3 00:00 16
t3 F s Thermostat switch-off time 3 00:00 16
ODB xDrainback option OFF 48
tDTO x* ODB switch-on condition - time period 60 s 48
tFLL x* ODB lling time 5.0 min 49
tSTB x* ODB stabilisation time 2.0 min 49
OTD s Thermal disinfection option OFF 17
PDIS s* Monitoring period 01:00 17
DDIS s* Heating period 01:00 17
TDIS s* Disinfection temperature 60 °C [140 °F] 17
SDIS s* Starting time 00:00 17
MAN1 x Manual mode R1 Auto 49
MAN2 x Manual mode R2 Auto 49
ADA1 xHE pump control OFF 49
LANG x Language dE 50
UNIT x Temperature unit °C 50
RESE x Reset - back to factory settings 50
######## Version number
Legend:
Symbol Description
x Channel is available
x* Channel is available, if the corresponding option is activated
sSystem-specic channel
s* System-specic channel, only available if the corresponding option is activated

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Installation Indications, functions and options MessagesCommissioningOperation and function
System-specicfunctions
The following adjustments are used for the specic functions in system 3. The chan-
nels described are not available in any other system.
Thermostat function
Afterheating
Use of surplus
energy
The thermostat function works independently from the solar operation and can be
used for using surplus energy or for afterheating.
• AH O < AH F
thermostat function for afterheating
• AH O > AH F
thermostat function for using surplus energy
The symbol ⓶will be shown on the display, if the second relay output is activated.
S3 is used as the reference sensor for the thermostat function.
AH O
Thermostat switch-on temperature
Adjustment range:
0.0 … 95.0 °C [30.0 … 200.0 °F]
Factory setting: 40.0 °C [110.0°F]
AH F
Thermostat switch-off temperature
Adjustment range:
0.0 … 95.0 °C [30.0 … 200.0 °F]
Factory setting: 45.0 °C [120.0 °F]
t1 O, t2 O, t3 O
Thermostat switch-on time
Adjustment range: 00:00 … 23:45
Factory setting: 00:00
t1 F, t2 F, t3 F
Thermostat switch-off time
Adjustment range: 00:00 … 23:45
Factory setting: 00:00
In order to block the thermostat function for a certain period, there are 3 time
frames t1 … t3.
If the thermostat function is supposed to run from 06:00 a.m. to 09:00 a.m. only,
adjust t1 O to 06:00 a.m. and t1 F to 09:00 a.m.
If the switch-on and switch-off times of a time frame are set to an identical value,
the time frame will be inactive. If all time frames are set to 00:00, the thermostat
function is solely temperature dependent (factory setting).

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Thermal disinfection of the upper DHW zone
OTD
Therm. disinfection function
Adjustment range: OFF / ON
Factory setting: OFF
PDIS
Monitoring period
Adjustment range:
0 … 30:0 … 24 h (dd:hh)
Factory setting: 01:00
DDIS
Disinfection period
Adjustment range: 0:00 … 23:59 (hh:mm)
Factory setting: 01:00
TDIS
Disinfection temperature
Adjustment range:
0 … 95 °C [30 … 200 °F]
Factory setting: 60 °C [140 °F]
Reference sensor for this function is S3.
This function helps to contain the spread of Legionella in DHW stores by system-
atically activating the afterheating.
For thermal disinfection, the temperature at the reference sensor will be moni-
tored. Protection is ensured when, during the monitoring period, the disinfection
temperature is continuously exceeded for the entire disinfection period.
The monitoring period starts as soon as the temperature at the reference sensor
falls below the disinfection temperature. When the monitoring period ends, the
allocated reference relay activates the afterheating. The disinfection period starts,
if the temperature at the allocated sensor exceeds the disinfection temperature.
Thermal disinfection can only be completed when the disinfection temperature
is exceeded for the duration of the disinfection period without any interruption.
Starting time delay
SDIS
Starting time
Adjustment range: 0:00 … 24:00 (time)
Factory setting: 00:00
If the starting delay option is activated, a starting time for the thermal disinfection
with starting delay can be adjusted.The activation of the afterheating is then delayed
until that starting time after the monitoring period has ended.
If the monitoring period ends, for example, at 12:00 o'clock, and the starting time
has been set to 18:00, the reference relay will be energised with a delay of 6 hours
at 18:00 instead of 12:00 o'clock.
Note
If the thermal disinfection option is activated, the display channels TDIS,
CDIS, SDIS and DDIS will be displayed.

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Installation Indications, functions and options MessagesCommissioningOperation and function
Arrangement 4: Solar system with store loading in layers
The controller calculates the temperature difference between collector sensor S1
and store sensors S2 and S3. If the difference is larger than or identical to the cor-
responding adjusted switch-on temperature differences (DT1O / DT2O), the solar
pump will be activated by relay 1, and the corresponding store zone will be loaded
until the switch-off temperature difference (DT1F / DT2F) or the maximum store
temperature (S1MX / S2MX) is reached. The priority logic causes priority loading
of the upper store zone, if possible. In that case, the 3-port valve will be operated
by relay 2.
Sensor S4 can optionally be connected for measurement purposes.
If heat quantity measurement (OHQM) is activated, S4 is to be used as the return
sensor.
910
VBus
S2
R1
S3
R2
S1
S4 / TR

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Display channels
Channel Description Connection terminal Page
COL x Temperature collector S1 38
TSTB x Temperature store 1 base S2 38
TSTT x Temperature store 1 top S3 38
S4 x Temperature sensor 4 S4 39
TR x* Temperature return sensor S4 38
n % x Speed relay R1 39
hP1 x Operating hours R1 R1 40
hP2 x Operating hours R2 R2 40
kWh x* Heat quantity in kWh - 39
MWh x* Heat quantity in MWh - 39
TIME x Time -40
Adjustment channels
Channel Description Factory setting Page
Arr x System 4 41
nMN x Minimum speed 30 % 42
DT1O xSwitch-on temperature difference 1 6.0 K [12.0 °Ra] 41
DT1F xSwitch-off temperature difference 1 4.0 K [8.0 °Ra] 41
DT1S x Set temperature difference 1 10.0 K [20.0 °Ra] 42
RIS1 x Rise R1 2 K [4 °Ra] 42
S1 MX x Maximum store temperature 1 60 °C [140 °F] 42
DT2O xSwitch-on temperature difference 2 6.0 K [12.0 °Ra] 41
DT2F xSwitch-off temperature difference 2 4.0 K [8.0 °Ra] 41
DT2S x Set temperature difference 2 10.0 K [20.0 °Ra] 42
RIS3 x Rise R2 2 K [4 °Ra] 42
S2MX x Maximum store temperature 2 60 °C [140 °F] 42
EM x Collector emergency temperature 130 °C [270 °F] 43
OCC x Collector cooling option OFF 43
CMX x* Maximum collector temperature 110 °C [230 °F] 43
OSYC x System cooling option OFF 44
DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 44
DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 44
OSTC x Store cooling option OFF 44
OHOL x* Holiday cooling option OFF 44
THOL x* Holiday cooling temperature 40 °C [110 °F] 44
OCN x Collector minimum limitation option OFF 45
CMN x* Collector minimum temperature 10 °C [50 °F] 45
Adjustment channels
Channel Description Factory setting Page
OCF x Antifreeze option OFF 45
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 45
PRIO x Priority 2 46
tLB x Loading break (store sequence control) 2 min 46
tRUN x Circulation time (store sequence control) 15 min 46
OTC x Tube collector option OFF 47
TCST x* OTC starting time 07:00 47
TCEN x* OTC ending time 19:00 47
TCRU x* OTC runtime 30 s 47
TCIN x* OTC standstill interval 30 min 47
OHQM xHeat quantity measurement option OFF 47
FMAX x* Maximum ow rate 6.0 l 47
MEDT x* Heat transfer uid / Antifreeze type 1 48
MED% x* Antifreeze concentration
(only if MEDT = propylene or ethylene)
45 % 48
MAN1 x Manual mode R1 Auto 49
MAN2 x Manual mode R2 Auto 49
ADA1 xHE pump control OFF 49
LANG x Language dE 50
UNIT x Temperature unit °C 50
RESE x Reset - back to factory settings 50
######## Version number
Legend:
Symbol Description
x Channel is available
x* Channel is available, if the corresponding option is activated.

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Installation Indications, functions and options MessagesCommissioningOperation and function
Arrangement 5: Solar system with 2 stores and valve logic
The controller calculates the temperature difference between collector sensor S1
and store sensors S2 and S3. If the difference is larger than or identical to the
corresponding adjusted switch-on temperature differences (DT1O / DT2O), the
solar pump will be activated by relay 1, and the corresponding store will be loaded
until the switch-off temperature difference (DT1F / DT2F) or the maximum store
temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of
store 1. If store 2 is being loaded, relay 2 switches the 3-port valve.
Sensor S4 can optionally be connected for measurement purposes.
If heat quantity measurement (OHQM) is activated, S4 is to be used as the return
sensor.
910
VBus
R2
S4 / TR
S1
R1
S2 S3
Store 1 Store 2