Resol DeltaSol BS Pro User manual

DeltaSol® BS Pro
www.resol.de
Thanks for buying a RESOL.
Read this manual carefully to get the best perfomance from this unit.
RESOL DeltaSol® BS Pro
Mounting
Connection
Handling
Fault localization
Examples
manual
B

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Imprint
This mounting- and operation manual including all parts is
copyrighted. Another use outside the copyright requires
the approval of RESOL - Elektronische Regelungen GmbH.
This especially applies for copies, translations, micro films
and the storage into electronic systems.
Editor: RESOL - Elektronische Regelungen GmbH
Important notice:
We took a lot of care over the texts and drawings of this
manual and to the best of our knowledge and consent. As
faults can never be excluded, please note:
Your own calculations and plans under consideration of
the current norms and DIN-directions should only be
basis for your projects. We don´t offer a guarantee for the
completeness of the drawings and texts of this manual
- they only represent some examples. They can only be
used on own risk. No liability is assumed for incorrect,
incomplete or false information and the resulting damages.
Errors and technical changes excepted.
Safety regulations:
Please read the following information carefully before
installing and operating the controller. In this way damage to
the solar system by wrong installation will be avoided. Please
observe that the mounting is adapted to the characteristics
of the building, that the local regulations are respected and
is conform with the technical rules.
DIN 4757, part 1
Solar heating systems with water and water mixtures as heat
transfer medium; Demands to the safety realization.
DIN 4757, part 2
Solar heating systems with organic heat transfer medium; Demands
to safety realization.
DIN 4757, part 3
Solar heating systems; solar collectors; Meanings; safety regulations;
Testing of standstil temperature
DIN 4757, part 4
Solar thermal systems; solar collectors; determination of efficiency,
heat capacity and pressure loss.
In addition to that European standards are worked out:
PrEN 12975-1
Thermal solar systems and their components;collectors, part 1:
General demands.
PrEN 12975-2
Thermal solar systems and their components; collectors; part 2:
Test processes
PrEN 12976-1
Thermal solar systems and their components; prefabricated sys-
tems, part 1: General demands.
PrEN 12976-2
Thermal solar systems and their components; prefabricated sys-
tems, part 2: Test processes
PrEN 12977-1
Thermal solar systems and their components; Customer-designed
manufactured systems, part 1: General demands.
PrEN 12977-2
Thermal solar systems and their components; Customer-designed
manufactured systems, part 2: Test processes
PrEN 12977-3
Thermal solar systems and their components; Customer-designed
manufactured systems, part 3: Performance test of warm water
stores.
Contents
Imprint .................................................................................2
Security devices ...................................................................2
Technichal data and function survey .................................3
1. Installation .............................................................4
1.1 Mounting .................................................................................. 4
1.2 Electrical wiring ...................................................................... 4
1.2.1 Standard solar system ........................................................... 5
1.2.2 Solar system and heat exchange ........................................ 5
1.2.3 Solar system and after-heating ............................................ 6
1.2.4 Solar system and store charge in layers ........................... 6
1.2.5 2-store-solar-system valve logic ......................................... 7
1.2.6 2-store-solar-system pump logic ........................................ 7
1.2.7 Solar system with 2 collectors ........................................... 8
1.2.8 Solar system with after-heating by solid fuel boiler 8
1.2.9 Solar system with heating circuit reverse raising ........... 9
2. Operation and function ..................................... 10
2.1 Adjustment buttons ............................................................ 10
2.2 System monitoring display ................................................. 10
2.2.1 Channel indication ...............................................................10
2.2.2 Tool bar ..................................................................................10
2.2.3 System screen ....................................................................... 11
2.3 Blinking codes .......................................................................11
2.3.1 System screen blinking codes ........................................... 11
2.3.2 LED blinking codes .............................................................. 11
3. Commissioning ................................................... 12
4. Control parameter and indication channels ... 13
4.1 Channel overview ................................................................13
4.1.1-5 Indication channels .............................................................. 15
4.1.6-21 Adjustment channels ...........................................................16
5. Tips for fault localization ................................... 21
5.1 Miscellaneous ........................................................................22
6. Accessory ............................................................ 24

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!
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• System-monitoring-display
• Up to 4 temperature sensors
Pt1000
• 2 semi-conductor relays for
pump speed control
• 9 basic systems selectable
• Heat balancing
• Function control
• User-friendly operation by
simple handling
• Housing in outstanding design
and compact dimensions, easy
to install
Technical data
Housing:
plastic, PC-ABS and PMMA
Protection type: IP 20 / DIN 40050
Environmental temp.: 0 ... 40 °C
Size: 172 x 110 x 46 mm
Mounting: wall mounting, mounting
into patch-panels is possible
Display: System screen for sys-
tem visualisation, 16-segment display,
7-segment display, 8 symbols for system
status and operating control lamp
Operation: by 3 pushbuttons in the
front of the housing
Functions: Differential temperature
controller with optionally add-on
system functions. Function control
according to BAW-guidelines, operating
hours counter for solar pump, tube
collector special function, pump speed
control and heat quantity balancing.
Inputs: for 4 temperature sensors
Pt1000
Outputs: 2 semi-conductor relays
Power supply:
210 ... 250 V~
Total power supply:
4 (2) A 250 V~
Scope of delivery:
1 x DeltaSol® BS Pro
1 x accessory bag
1 x spare fuse T4A
2 x screws and dowels
4 x strain relief and screws
1 x condenser 4,7 nF
Additionally enclosed in the full kit:
2 x sensor FKP6
2 x sensor FRP6

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display
pushbutton
can fuse 4A
cable conduits with strain
relief
cover
1.1 Mounting
The unit must only be located internally. It is not suitable
for installation in hazardous locations and should not be
sited near to any electromagnetic field. The controller must
additionally be equipped with an all-polar gap of at least 3 mm
or with a gap according to the valid installaton regulations,
e.g. LS-switches or fuses. Please pay attention to a separate
laying of the cable lines and installation of ac power supply.
1. Unscrew the cross-recessed screw of the cover and
remove it from the housing.
2. Mark the upper fastening point on the underground and
premount the enclosed dowel and screw.
3. Hang up the housing at the upper fastening point and mark
the lower fastening point on the underground (hole pitch
130 mm), afterwards put the lower dowel.
4. Fasten the housing at the underground.
1. Installation Warning!
Switch-off power supply before
opening the housing.
1.2 Electrical wiring The power supply to the controller must only be made by
an external power supply switch (last step of installation!)
and the line voltage must be 210 ... 250 Volt (50...60 Hz).
Flexible lines are to be fixed at the housing by enclosed
strain relief supports and screws.
The controller is equipped with 2 standard relays, to
which the consumers e.g. pumps, valves etc. can be
connected:
• Relay 1
18 = conductor R1
17 = neutral conductor N
13 = ground clamp
• Relay 2
16 = conductor R2
15 = neutral conductor N
14 = ground clamp
The temperature sensors (S1 up to S4) will be
connected to the following terminals independently of the
polarity:
1 / 2 = Sensor 1 (e.g. Sensor collector 1)
3 / 4 = Sensor 2 (e.g. Sensor store 1)
5 / 6 = Sensor 3 (e.g. Sensor collector 2)
7 / 8 = Sensor 4 (e.g. Sensor store 2)
The power supply is effected to the clamps:
19 = neutral conductor N
20 = conductor L
12 = ground clamp
net clamps
fuse
consumer clamps
Sensor clamps
hanging
fixation
earthing clamps
Electrostatic discharge can lead to damages of elec-
tronic components!
Dangerous voltage on contact!
Please note:
The relays are semi-conductor-relays for pump speed control - they need
a minimum load of 20 W (power consumption of the consumer) for
faultless function. When connecting auxiliary relays, motor valves, etc. are
individually to the condenser which is enclosed in the mounting material,
must be connected parallely to the relevant relay output.
Attention: for connection of auxiliary relays or valves, the minimum pump
speed must be adjusted to 100 %.

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S1
S2
S4 / TRF
S1
S3
S4
R1
R2
S2
1.2.1 Allocation of clamps for system 1
1.2.2 Allocation of clamps for system 2
Standard solar system with 1 store, 1 pump and 3 sen-
sors. The sensor S4 / TRF can optionally be used for heat
quantity balancing.
Solar system and heat exchange of existing store
with 1 store, 4 sensors and 2 pumps.
R1
Arr 1
Arr 2
S3
store 1 store 2
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 store sensor 2
R1 solar pump
R2 pump for heat exchange
Symbol Specification
S1 Collector sensor
S2 Store sensor lower
S3 Store sensor at the top
(optionally)
S4 / TRF Sensor for heat quantity
measurement (optionally)
R1 Solar pump

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R2
S1
S2
R1 S3
S4 / TRF
1.2.4 Allocation of clamps for system 4
1.2.3 Allocation of clamps for system 3 Solar system and after-heating with 1 store, 3 sensors
and after-heating. The sensor S4 / TRF can optionally be used
for heat quantity balancing.
S2
R1
S3
R2
S1
Solar system and store charge in layers with 1 store,
3 sensors, 1 solar pump and 3-way-valve for store charge in
layers. The sensor S4 / TRF can optionally be used for heat
quantity balancing.
S4 / TRF
Arr 3
Arr 4
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 / TRF sensor for heat quantity
balancing (optionally)
R1 solar pump
R2 pump for heat exchange
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 / TRF sensor for heat quantity
blancing (optionally)
R1 solar pump
R2 3-way-valve

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S1
S2 S3
R1 R2
1.2.5 Allocation of clamps for system 5
1.2.6 Allocation of clamps for system 6
2-store-solar system with valve logic with 2 stores, 3
sensors, 1 solar pump and 1 3-way-valve. The sensor S4 /
TRF can optionally be used for heat quantity balancing.
R2
S4 / TRF
S1
R1
S2 S3
2-store-solar system with pump logic with 2 stores, 3
sensors and 2 solar pumps.
Arr 5
Arr 6
store 1 store 2
Store 1 Store 2
S4
Symbol Specification
S1 collector sensor
S2 store sensor 1
S3 store sensor 2
S4 / TRF sensor for heat quantity
balancing (optionally)
R1 solar pump
R2 3-way-valve
Symbol Specification
S1 collector sensor
S2 store sensor 1
S3 store sensor 2
S4 measuring sensor
(optionally)
R1 solar pump
R2 solar pump

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S1
S4
S2
S3
R1
R2
1.2.7 Allocation of clamps for system 7
1.2.8 Allocation of clamps for system 8
Solar system with east-west collectors, 1 store,
3 sensors and 2 solar pumps.
R1 R2
S1
S2
S3
Solar system with after-heating by solid fuel boiler
with 1 store, 4 sensors, 1 solar pump and 1 pump for after-
heating.
Arr 7
Arr 8
Symbol Specification
S1 collector sensor 1
S2 store sensor
S3 collector sensor 2
R1 solar pump collector 1
R2 solar pump collector 2
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 sensor for solid hot fuel
boiler
R1 solar pump
R2 pump for solid hot fuel
boiler

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S1
S3
S2
S4
R2
R1
1.2.9 Allocation of clamps for system 9 Solar system and heating circuit reverse raising
with 1 store, 4 sensors, 1 solar pump and 1 3-way-valve for
heating circuit reverse raising.
Arr 9
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 heating circuit return
R1 solar pump
R2 3-way-valve

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1
3
2
backwards forward
SET
(selection / adjustment mode)
The system monitoring display consists of 3 blocks: indi-
cation of the channel, tool bar and system screen
(active system scheme).
The indication channel consists of two lines. The upper
line is an alphanumeric 16-segment indication, in which main-
ly the channel names / menu items are shown. In the lower
7-segment indication, the channel values and the adjustment
parameter are indicated.
Temperatures and temperature differences are indicated
in or .
2.2.1 Channel indication
only channel indication
2.2.2 Tool bar
The additional symbols of the tool bar indicate the current
system status.
only tool bar
2. Operation and function
2.1 Pushbuttons for adjustment
The controller is operated by 3 pushbuttons below the
display. The forward-key (1) is used for scrolling forward
through the indication menu or to increase the adjustment
values. The backwards-key (2) is accordingly used for the
reverse function.
For adjustment of last indication channel, keep button 1
pressed for 3 seconds. If an adjustment value is shown on
the display, SEt is indicated. In this case you can press the
key „Set“ (3) in order to change into input mode.
Select a channel by keys 1 and 2
Shortly press key 3, so that „SEt“ flashes
Adjust the value by keys 1 and 2
Shortly press key 3, so that „SEt“ permanently appears,
the adjusted value is now saved.
2.2 System monitoring display
!
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Total Monitoring-Display
symbol standard flashing
relay 1 activ
relay 2 activ
maximum store limitation
active / maximum store
temperature exceeded
collector cooling function active
reccoling function active
option antifreeze function
active
collector minimum limitation
active
antifreeze function active
collector security shutdown
active
or store securtiy shutdown active
+ sensor defect
+ manual operation active
an adjustment channel is changed
SET-mode

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The system screen (active system scheme) shows the
schemes selected on the controller. It consists of several
system component symbols, which are - depending on the
current status of the system - either flashing, permanently
shown or hidden.
Sensors
Collector 1
Collector 2
Pumps
Heating circuit
Sensor
Additional symbol for
operation of the burner
Valves
Store
Store heat exchanger Store 2 or after-heating (with
additional symbol)
Sensor store up
Valve
Collectors
with collector sensor
Pump
3-way-valves
The flow direction or the current bre-
aking capacity are always shown.
Heating circuit
Store 1 and 2
with heat exchanger
After-heating
with burner symbol
Temperature sensor
2.2.3 System screen
only system screen
Constantly green: everything all right
Red/green blinking: initialisation phase
manual operation
Red blinking: sensor defect
(sensor symbol is quickly blinking)
2.3 Blinking codes
2.3.2 LED blinking codes
2.3.1 System screen blinking codes
• Pumps are blinking during starting phase
• Sensors are blinking if the respective sensor-indication
channel is selected.
• Sensors are quickly blinking in case of sensor defect.
• Burner symbol is blinking if after-heating is activated.

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3. Commissioning
On commissioning you have to adjust primarily the system scheme
1. Ac power supply must be activated. The controller passes
an initialisation phase in which the operating control lamp
flashes red and green. After having finished the initialisation,
the controller is in automatic operation with factory set-
tings. The preadjusted system scheme is Arr 1.
2. - select Arr
- change into -mode (see 2.1)
- select the system scheme by Arr-characteristics
- adjustment is saved by pressing button
Now the controller is ready for operation and should enable
an optimum operation of the solar system by the factory
settings made.
System survey:
Arr 1 : standard solar system
Arr 2 : solar system with heat exchange
Arr 3 : solar system with after-heating
Arr 4 : solar system with store charge in layers
Arr 5 : 2-store solar system with valve logic
Arr 6 : 2-store solar system with pump logic
Arr 7 : solar system with 2 collectors and 1 store
Arr 8 : solar system with after-heating by solid hot fuel
boilers
Arr 9 : solar system with heating circuit reverse raising
1
3
2
backwards forward
SET
(Selection / Adjustment mode)
Operation cont-
rol lamp
Arr 1 Arr 2
Arr 3 Arr 4
Arr 5 Arr 6
Arr 7 Arr 8
Arr 9

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4. Controller parameter and indication channels
4.1 Channel-overview
Legend:
x
Corresponding channel is available.
x*
Corresponding channel is available if the appropriate option
is activated.

Corresponding channel is only available if the option heat
quantity measurement is activated (OHQM).
MEDT
The channel antifreeze content (MED%) is only shown if
there is not used water or Tyfocor LS / G-LS (MEDT
0 or 3) as antifreeze. The adjustment of the content of
antifreeze does only make sense when using antifreeze
components in the solar circuit.

Corresponding channel is only available if the option heat
quantity measurement is deactivated (OHQM).
Please note:
S3 and S4 are only indicated in case of sensors connected.
Channel Arr Specification Page
1 2 3 4 5 6 7 8 9
COL x x x x x x x x Temperature collector 1 15
COL1 x Temperature collector 1 15
TST x x Temperature store 1 15
TSTL x x x x Temperature store 1 below 15
TST1 x x x Temperature store 1 below 15
TSTU x x x x x Temperature store 1 upper 15
TST2 x x x Temperature store 2 below 15
TFSB x Temperature solid hot fuel boiler 15
TRET x Temperature heating circuit 15
COL2 x Temperature collector 2 15
S3 x Temperature sensor 3 15
TRF     Temperature return sensor 15
S4     Temperature sensor 4 15
n % x x x x Pump speed relay 1 15
n1 % x x x x x Pump speed relay 1 15
n2 % x x x x Pump speed relay 2 15
hP x x x x Operating hours relay 1 16
h P1 x x x x x Operating hours relay 1 16
h P2 x x x x x Operating hours relay 2 16
kWh     Heat quantity kWh 16
MWh     Heat quantity MWh 16
Arr 1-9 System 12
DT O x x x x x x Switch-on temperature difference 17
DT1O x x x Switch-on temperature difference 1 17
DT F x x x x x x Switch-off temperature difference 1 17
DT S x x x x x x Nominal temperature difference 17
RIS x x x x x x Increase 17
DT1F x x x Switch-off temperature difference 17
DT1S x x x Nominal temperature difference 1 17
RIS1 x x x Increase 1 17
S MX x x x x x x Maximum temperature store 1 17
S1 MX x x x Maximum temperature store 1 17
DT2O x x x Switch-on temperature difference 2 17
DT2F x x x Switch-off temperature difference 2 17
DT2S x x x nominal temperature difference 2 17
RIS2 x x x Increase 2 17
S2MX x x x Maximum temperature store 2 17
EM x x x x x x x x emergency temperature collector 1 18
EM1 x emergency temperature collector 1 18

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Channel Arr Specification Page
123456789
OCX x x x x x x x x option collector cooling collector 1 18
OCX1 x option collector cooling collector 1 18
CMX x* x* x* x* x* x* x* x* maximum temperature collector 1 18
CMX1 x* maximum temperature collector 1 18
OCN x x x x x x x x option minimum limitation collector 1 18
OCN1 x option minimum limitation collector 1 18
CMN x* x* x* x* x* x* x* x* minimun temperature collector 1 18
CMN1 x* minimun temperature collector 1 18
OCF x x x x x x x x option antifreeze collector 1 18
OCF1 x option antifreeze collector 1 18
CFR x* x* x* x* x* x* x* x* antifreeze temperature collector 1 18
CFR1 x* antifreeze temperature collector 1 18
EM2 x emergency temperature collector 2 18
OCX2 x option collector cooling collector 2 18
CMX2 x* maximum temperature collector 2 18
OCN2 x option miminum limitation collector 2 18
CMN2 x* minium temperature collector 2 18
OCF2 x option antifreeze collector 2 18
CFR2 x* antifreeze temperature collector 2 18
PRIO x x x priority 19
tSP x x x stop time 19
tRUN x x x Ciruclation time 19
OREC x x x x x x x x x option reccoling 19
O TC x x x x x x x x x option tube collector 19
DT3O x x x switch-on temperature difference 3 17
DT3F x x x switch-off temperature difference 3 17
DT3S x x nominal temperature DT3 17
RIS3 x x Increase DT3 17
MX3O x x switch-on treshold for maximum temp. 17
MX3F x x switch-off treshold for maximum temp. 17
MN3O x x switch-on treshold for minimum temp. 17
MN3F x x switch-off treshold for minimum temp. 17
AH O x switch-on temp. for thermostat 1 20
AH F x switch-off temp. for thermostat 1 20
OHQM x x x x option WMZ 16
FMAX     maximum flow 16
MEDT     antifreeze type 16
MED% MEDT MEDT MEDT MEDT antifreeze content 16
nMN x x x x minimum pump speed relay 1 20
n1MN x x x x x minimum pump speed relay 1 20
n2MN x x x x minimum pump speed relay 2 20
HND1 x x x x x x x x x manual operation relay 1 20
HND2 x x x x x x x x x manual operation relay 2 20
LANG x x x x x x x x x language 20
PROG XX.XX program number 20
VERS X.XX version number 20

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4.1.1 Indicataion of collector temperatures
Shows the current collector temperature.
• COL : collector temperature (1-collector-system)
• COL1 : collector temperature 1
• COL2 : collector temperature 2
COL, COL1, COL2:
Collector temperature
display range: -40 ... +250 °C
4.1.2 Indication of store temperatures
Shows the current store temperature.
• TST : store temperature (1-store-system)
• TSTL : store temperature lower
• TSTU : store temperature above
• TST1 : temperature store 1
• TST2 : temperature store 2
TST, TSTL, TSTU,
TST1, TST2:
Store temperatures
Display range: -40 ... +250 °C
4.1.3 Indication of sensor 3 and sensor 4
Shows the current temperature of the corresponding addi-
tional sensor (without control function).
• S3 : temperature sensor 3
• S4 : temperature sensor 4
Please note:
S3 and S4 are only indicated if the temperature sensors
are connected (shown).
S3, S4:
Sensor temperatures
Display range: -40 ... +250 °C
4.1.4 Indication of other temperatures
Shows the current temperature of the corresponding
sensor.
• TFSB : temperature solid hot fuel boiler
• TRET : temperature heating reverse raising
• TRF : temperature return flow
TFSB, TRET, TRF:
other measuring tempe-
ratures
Display range: -40 ... +250 °C
4.1.5 Indication of current pump speed
Shows the current pump speed of the corresponding
pump.
• n % : current pump speed (1-pump-system)
• n1 % : current pump speed pump 1
• n2 % : current pump speed pump 2
n %, n1 %, n2 %:
current pump speed
Display range: 30 ... 100 %

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4.1.7 Heat quantity balancing
OHQM:Heat quantity balan-
cing
Adjustment range: OFF ... ON
Factory setting: OFF
A heat quantity balancing is possible for the basic systems
(Arr) 1, 3, 4 and 5 in conjunction with a flowmeter. You just
have to activate the option heat quantity balancing in the
channel OHQM
The volume flow readable at the flowmeter (l/min) must
be adjusted in the channel FMAX. Antifreeze type and
concentration of the heat transfer medium are indicated on
the channels MEDT and MED%.
Type of antifreeze:
0 : water
1 : propylene glycol
2 : ethylene glycol
3 : Tyfocor® LS / G-LS
The heat quantity transported is measured by the indication
of the volume flow and the reference sensor of feed flow
S1 and return flow S4. It is shown in kWh-parts in the in-
dication channel kWh and in MWh-parts in the indication
channel MWh. The sum of both channels form the total
heat output.
The heat quantity added up can be reset. As soon as one
of the display channels of the heat quantity is selected, the
symbol is permanently shown on the display. The button
SET (3) must pressed for approx. 2 seconds in order to get
back into the RESET-mode of the counter. The display-sym-
bol is flashing and the value for heat quantity will be set
to 0. In order to finish the RESET-procedure, the button
must be pressed in order to confirm.
In order to interrupt the RESET-procedure, no button
should be pressed for about 5 seconds. The controller re-
turns automatically into the indicaton mode.
FMAX: Volume flow in
l/min
Adjustment range 0 ... 20
in steps of 0,1
Factory setting 6,0
kWh/MWh:Heat quantity
in kWh / MWh
Display channel
MEDT: Type of antifreeze
Adjustment range 0 ... 3
Factory setting 1
MED%: Concentration of
antifreeze in (Vol-) %
MED% is blinded out by
MEDT 0 and 3.
Adjustement range 20 ... 70
Factory setting 45
4.1.6 Operating hours counter
The operating hours counter adds up the solar operating
hours of the respective relay (h P / h P1 / hP2). Full hours
are shown on the display.
The operating hours added up can be reset. As soon as
one operating hours channel is selected, the symbol in
permanently shown on the display. The button SET (3) must
pressed for approx. 2 seconds in order to get back into
the RESET-mode of the counter. The display-symbol is
flashing and the operating hours will be set to 0. In order to
finish the RESET-procedure, the button must be pressed
in order to confirm.
In order to interrupt the RESET-procedure, no button
should be pressed for about 5 seconds. The controller re-
turns automatically into the indication mode.
h P / h P1 / h P2:
Operating hours counter
Display channel

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4.1.8 ∆T-regulation
Please note: Switch-on temperature difference DO must
be at least 1 K higher than the switch-off temperature-
difference DF.
DT O / DT1O / DT2O /
DT3O:
Switch-on temperature
Adjustment range 1,0...20,0 K
Factory setting 6.0
DT F / DT1F / DT2F /
DT3F:
Switch-off temperature diff.
Adjustment range 0,5 ... 19,5 K
Factory setting 4.0 K
4.1.9 Maximum store temperature If the adjusted maximum temperature is exceeded, a
further loading of the store is stopped so that a damaging
overheating can be avoided. If the maximum store
temperature is exceeded, in the display is shown and .
Please note: The controller is equipped with a security-
switch-off of the store, which avoids a further loading of the
store if 95 °C is reached at the store.
S MX / S1MX / S2MX:
Maximum store temp.
Adjustment range 2..95 °C
Factory setting 60 °C
DT S / DT1S / DT2S /
DT3S:
Nominal temperature difference
Adjustment range 1,5..30,0 K
Factory setting 10.0
RIS / RIS1 / RIS2 / RIS3:
Raise
Adjustment range 1 ... 20 K
Factory setting 2 K
Primarily the controller works in the same way as a
standard differential controller. If the switch-on difference
(DT O / DT1O / DT2O) is reached, the pump is
activated and after having got an impulse (10 s) a minimum
pump speed (nMN = 30 %) is run. If the adjusted nominal
value of the temperature difference (DT S / DT1S /
DT2S / DT3S) is reached, the pump speed is increased
by one step (10%). If the difference increases by 2 K(RIS /
RIS1 / RIS2 / RIS3), the pump speed is increased by 10
% respectively until the maximum pump speed of 100 % is
reached. The response of the controller can be adapted by
means of the parameter „Anstieg“ (raise). If the adjusted
swithc-off temperature is underrun (DT F / DT1F /
DT2F), the controller switches-off.
Maximum temperature limitation
The controller is equipped with an independent tempe-
rature differential regulation for which minimum and
maximum temperature limations as well as corresponding
switch-on and -off temperatures can be separately adjusted.
Only possible for Arr = 2 and 8 (e.g. for solid hot fuel boilers
or heat exchange regulation.
Is the adjusted value MX3O exceeded, the re-
lais 2 will be deactivated. By falling be-
low MX3F, the relais will be switched on again.
Reference sensor:
S3 by Arr 8 (TSTU)
S4 by Arr 2 (TST2)
Is the adjusted value MN3O underrun, the re-
lais 2 will be deactivated. By falling be-
low MN3F, the relais will be switched on again.
Reference sensor:
S4 by Arr 8 (TFSB)
S3 by Arr 2 (TSTU)
Parallely obtain both switch on- and switch off temperature
differences DT3O and DT3F for the maximal- and minimal
temperature limit.
MX3O / MX3F:
Maximum temperature
limitation
Adjustment range
0,0 ... 95,0 °C
Factory setting
MX3O 60,0 °C
MX3F 58,0 °C
Minimum temperature limitation
MN3O / MN3F:
Minimum temperature
limitation
Adjustment range
0,0 ... 90,0 °C
Factory setting:
Arr = 2
MN3O 5,0 °C
MN3F 10,0 °C
Arr = 8
MN3O 60,0 °C
MN3F 65,0 °C
4.1.10 ∆T-regulation (solid fuel boilders and heat
exchange)

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CMN / CMN1 / CMN2:
Minimum collector tempe-
rature
Adjustment range
-10 ... 90 °C
Factory setting 10 °C
CMX / CMX1 / CMX2:
Maximum collector temp.
Adjustment range
100 ... 190 °C
Factory setting120 °C
4.1.12 System cooling If the adjusted maximum store temperature is reached, the
solar system switches-off. If now the collector temperature
raises to the adjusted maximum collector temperature
(CMX / CMX1 / CMX2), the solar pump remains activa-
ted until this limit temperature value is again underrun. The
store temperature might continue to raise (subordinated
active maximum store temperature), but only until 95 °C
(emergency shutdown of the store). If the store temperatu-
re is higher than the maximum store temperature (S MX
/ S1MX / S2MX) and the collector temperature is by at
least 5K lower than the store temperature, the solar system
remains activated until the store is again cooled down by
the collector and the tubes under the adjusted maximum
temperature (S MX / S1MX / S2MX)(only by activated
OREC function).
In case of active system cooling on the display is shown
(flashing). Due to the cooling function the solar system can
be kept operable for a longer period on hot summer days
and a thermal release of the collector and the heat transfer
medium is ensured as well.
OCX / OCX1 / OCX2:
Option system cooling
Adjustment OFF ... ON
Factory setting OFF
4.1.13 Option minimum collector limitation
OCN / OCN1 / OCN2:
Mimimum collector limitation
Adjustment range OFF / ON
Factory setting OFF
The minimum collector temperature is a minimum switching
temperature, which must be exceeded so that the solar
pump (R1/R2) is switched-on. The minimum temperature
shall avoid a steady starting-up of the solar pump (or solid
fuel boiler charging pumps) for low collector temperatures.
If the minimum temperature is underrun, in the display is
shown (flashing).
CFR / CFR1 / CFR2:
Antifreeze temperature
Adjustment range
-10 ... 10 °C
Factory setting 4,0 °C
4.1.14 Option antifreeze function
OCF / OCF1 / OCF2:
Antifreeze function
Adjustment range
OFF / ON
Factory setting OFF
4.1.11 Limit collector temperature
Collector emergency shutdown
If the adjusted collector limit temperature (EM / EM1 /
EM2) is exceeded the solar pump (R1/R2) is deactivated
in order to avoid a damaging overheating of the solar
components (collector emergency shutdown). The limit
temperature is set to 140 °C by RESOL but it can be
changed within the adjustment range of 110 ... 200 °C. In
the display is shown (flashing).
EM / EM1 / EM2:
Limit collector temperature
Adjustment range
110 ... 200 °C,
Factory setting 140 °C
The antifreeze function activates the loading circuit bet-
ween collector and store if the adjusted antifreeze function
is underrun in order to protect the medium that it will
not freeze or „get thick“. If the adjusted frost protection
temperature is exceeded by 1 °C, the loading circuit will
be deactivated.
Please note:
As there is only a limited heat quantity of the store available
for this function, the anti freeze function should only be used
in regions with few days of temperatures around freezing
point.

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The controller checks the stores regarding loading facilities
(switch-on difference). If the priority store cannot be loaded,
the lower-ranking store is checked. If the lower-ranking store
can be charged, this is effected by the so-called „oscilating
charge time“ (tRUN). After termination of the oscilating
charge time, loading is stopped. The controller controls
the increase in collector temperature. If it increases by the
collector rising temperature (∆T-Col 2 K, fixed software
value), the expired break time is again reset to zero and the
oscilating break time starts again. If the switch-on conditions
of the priority store is not reached, the loading of the
lower-ranking store is continued. If the priority switch has
reached its maximum temperature, the oscilating charge is
not effected.
Oscillating break time / oscillating charge time /
collector rising temperature:
4.1.17 Tube collector special function If the controller measures an increase of 2 K compared
to the collector temperature stored at last, the solar
pump is switched-on to 100 % for about 30 seconds.
After expiration of the solar pump runtime the current
collector temperature is stored as new reference value. If
the measured temperature (new reference value) is again
exceeded by 2 K, the solar pump again switches-on for 30
seconds. If the switch-on difference between collector and
store is again exceeded during runtime of the solar pump
or the standstil of the system, the controller automatically
switches over to solar charging.
If the collector temperature drops by 2 K during standstill,
the switch-on value for the special tube collector function
will be recalculated.
O TC:
Tube collector special
function
Adjustment range:
OFF ... ON
Factory setting: OFF
4.1.16 Recooling function If the adjusted maximum store temperaute (S MX, S1MX)
is reached, the solar pump remains activated in order to
avoid an overheating of the collector. The temperature of
the first store might continue to increase but only up to 95
°C (emergency shutdown of the store).
In the evening the solar system continues running until
the store is cooled down to the adjusted maximum store
temperature via collector and pipes.
OREC:
option recooling
adjustment range
OFF ... ON
Factory setting: OFF
4.1.15 Oscillating charge
Respective adjustment values:
Factory setting Adjustment range
priority [PRIO] (1 / ANL 5,6) (2 / ANL 4) 0-2
oscillating break-time [tSP] 2 min. 1-30 min.
oscillating charge-time [tRUN] 15 min. 1-30 min.
The priority logic of the controller
DeltaSol® BS Pro:
The above-mentioned options and parameter only have
a meaning in multi-store systems (system Arr = 4, 5, 6). If
priority 0 is adjusted, the stores which show a temperature
difference to the collector are loaded in numerical order
(store 1 or store 2). In general, at that time, only one store
is loaded. For Arr= 5, 6 parallel loading is also possible.
Priority:

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For control- and service work the operating mode of
the controller can be manually adjusted by selecting the
adjustment value HND1 / HND2, in which the following
adjustments can be made:
4.1.20 Operating mode
• HND1 / HND2
Operating mode
OFF : relay off (flashing) +
AUTO : relay in automatic operation
ON : relay on (flashing) +
HND1/HND2:
Operating mode
Adjustment range:
OFF, AUTO, ON
Factory setting: AUTO
The thermostat function works independently from the
solar operation and can e.g. be used for use of surplus
energy or an after-heating.
• AH O < AH F
the thermostat function is used for after-heating
• NH O > AH F
the thermostat function is used for use of surplus
energy
On the display is shown if the second relay output is
activated.
4.1.18 Thermostat function
(Arr = 3)
after-heating use of surpluse energy
AH O:
Thermostat-switch-on
temperature
Adjustment range:
0,0 ... 95,0 °C
Factory setting: 40,0 °C
AH F:
Thermostat-switch-off tem-
perature
Adjustment range:
0,0 ... 95,0 °C
Factory setting: 45,0 °C
4.1.19 Pump speed control A relative minimum pump speed is specified for pumps
connected at the outputs R1 and R2 via adjustment channels
nMN, n1MN and n2MN.
Attention:
When using consumers (e.g. valves) which are not
pump speed controlled, the value must be adjusted
to 100 % in order to deactivate the pump speed
control.
nMN, n1MN, n2MN:
Pump speed control
Adjustment range:
30 ... 100
Factory setting: 30
4.1.21 Language
The menu language can be adjusted in this channel.
• dE : German
• En : English
• It : Italiano
LANG:
Adjustment of language
Adjustment range: dE, En, It
Factory setting: dE