Resol DeltaSol BS Plus User manual

DeltaSol®
BS Plus
www.resol.de
Thank you for buying a RESOL product.
Please read this manual carefully in order to put this controller to the best
possible use.
RESOL DeltaSol®BS Plus
Mounting
Connection
Operation
Fault diagnostics
Application examples
manual

DeltaSol®BS Plus
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Imprint:
This mounting and operation manual including all parts is
copyrighted. Any 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:
All descriptions and drawings contained in this manual
have been prepared to the best of our knowledge and
belief.The drawings in this manual are for the purpose of
example and should be used at your own risk.We cannot
be held responsible for any errors. Please note:
It is the responsibility of the installer to ensure current
standards and industry best practices are followed.
Subject to change without notice. Errors excepted.
Safety regulations:
Please read the following information carefully before
installing and operating the controller.The mounting and
the operation are to be carried out due to the accepted
technical rules. Please pay attention to the accident
prevention regulation of the Accident Prevention &
Insurance Association. A wrong application as well as
inadmissable changes during the mounting will result in
an exclusion of liability.
Attention should be paid to following technical rules:
DIN 4757, part 3
Solar heating systems; solar collectors; meanings; safety
regulations; testing of standstill 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
systems, part 1: General demands.
PrEN 12976-2
Thermal solar systems and their components; prefabricated
systems, 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
hot water stores.
Contents
Imprint
Safety regulations ..............................................................2
Technical data and overview of functions ........................3
1. Installation ............................................................4
1.1 Mounting ................................................................................. 4
1.2 Electrical Connection .......................................................... 4
1.2.1 Data communication / Bus .......................................5
1.2.2 Standard solar system.......................................................... 5
1.2.3 Solar system and heat exchange ....................................... 6
1.2.4 Solar system and afterheating ........................................... 6
1.2.5 Solar system and store charge in layers......................... 7
1.2.6 2-store-solar system valve logic ...................................... 7
1.2.7 2-store-Solar system pump logic ..................................... 8
1.2.8 Solar system with 2 collectors ......................................... 8
1.2.9 Solar system afterheating by solid fuel boiler .............. 9
1.2.10 Solar system with heating circuit return flow incr. .... 9
2. Opearation 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. Primary commissioning .................................... 12
4. Control parameter and display channels ........ 13
4.1 Channel overview ............................................................... 13
4.1.1-6 Indication channels ............................................................. 15
4.1.6-21 Adjustment channels.......................................................... 16
5. Tips for fault localization .................................. 21
5.1 Various ................................................................. 22
6. Accessory ........................................................... 24

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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
• RESOLVBus®®
®®
®
• Function control
• Thermostat function (time
controlled)
• Parameterisation and control
of the system by RESOL Ser-
vice Center; Software is
possible
• 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
Ambient temp.: 0 ... 40 °C
Size: 172 x 110 x 46 mm
Mounting: wall mounting, mounting
into patch-panels is possible
Display: System screen for system
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 optional add-on system
functions. Function control according
to BAW-standards, operating hours
counter for solar pump, tube collector
special function, pump speed control,
thermostat function and heat quantity
balancing.
Inputs: for 4 temperature sensors
Pt1000
Outputs: 2 semi-conductor relays
Bus: RESOL VBus®
Power supply:
210 ... 250 V~
Total power supply:
4 (2) A 250 V~
Scope of delivery:
1 x DeltaSol®BS Plus
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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VBus
display
pushbutton
can fuse 4A
cable conduits with strain
relief
cover
1.1 Mounting
This 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 ensure sensor
cables and ac power supply are separated
1. Unscrew the cross-head screw of the cover and remove
it from the housing.
2. Mark the upper fastening point on the subsurface
and premount the enclosed dowel and screw.
3. Mount the housing to the upper fastening point and mark
the lower fastening point on the subsurface (pitch of
hole 130 mm), afterwards set the lower dowel.
4. Mount the housing to the top and fix it with the lower.
fastening screw.
.
1. Installation Warning!
Switch-off power supply before
opening the housing.
1.2 Electrical connection 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 clampsSensor clamp
fastening
fixing
ground clamp
Electrostatic discharge can lead to damages of
electronic 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 / TRL
1.2.2 Allocation of clamps for system 1 Standard solar system with 1 store, 1 pump and 3
sensors. Sensor S4 / TRF can optionally be used for heat
quantity balancing.
R1
SYS 1
S3
Symbol Description
S1 collector sensor
S2 lower store sensor
S3 upper store sensor
(optional)
S4 / TRL sensor for heat quantity
measurement (optional)
R1 solar pump
1.2.1 Data communication/ Bus The controller comes with a RESOL VBus®for data
communication and energy supply of external modules.
The connection is effected with optional polarity at the
clamps marked with„VBus“. Via this data Bus you can
install one or more RESOLVBus®modules, e.g.:
• RESOL heat quant. measurement module WMZ-M1
• RESOL large display GA3
• RESOL Data logger, DL1
• RESOL Data teleindication, DFA2
Additionaly, the controller can be connected to the PC
with the help of a RESOL RS-COM adapter. With the
RESOL Service Center Software (RCS) the controller
parameters can be changed, measurements can be read
out, processed and visualised.The software enables an easy
function control and adjustment of the system.A light Ver-
sion of the software can be downloaded from www.resol.de
for free.
RESOL VBus
connection clamps

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R2
S1
S2
R1 S3
S4 / TRL
1.2.4 Allocation of clamps for system 3 Solar system and after-heating with 1 store, 3 sensors
and after-heating. Sensor S4 / TRF can optionally be used
for heat quantity balancing.
SYS 3
S1
S3
S4
R1
R2
S2
1.2.3 Allocation of clamps for system 2 Solar system and heat exchange of existing store
with 1 store, 4 sensors and 2 pumps.
SYS 2
Store 1 Store 2
Symbol Specification
S1 collector sensor
S2 store sensor lower
S3 store sensor at the top
S4 / TRF sensor for heat quantity
balancing (optional)
R1 solar pump
R2 pump for heat exchange
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

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1.2.5 Allocation of clamps for system 4
1.2.6 Allocation of clamps for system 5
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. Sensor S4 / TRF can optionally be used for heat
quantity balancing.
2-store-solar system with valve logic with 2 stores, 3
sensors, 1 solar pump and 1 3-way-valve. Sensor S4 / TRF
can optionally be used for heat quantity balancing.
R2
S4 / TRL
S1
R1
S2 S3
S4 / TRL
SYS 4
SYS 5
Store 1 Store 2
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
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

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1.2.7 Connection of system 7 Solar system with east-west collectors, 1 store,
3 sensors and 2 solar pumps.
R1 R2
S1
S2
S3
SYS 7
S1
S2 S3
R1 R2
1.2.6 Allocation of clamps for system 6 2-store-solar system with pump logic with 2 stores, 3
sensors and 2 solar pumps.
SYS 6
Store 1 Store 2
S4 / TRL
Symbol Specification
S1 collector sensor
S2 store sensor 1
S3 store sensor 2
S4 measuring sensor
(optional)
R1 solar pump
R2 3-way-valve
Symbol Specification
S1 collector sensor
S2 store sensor 1
S3 collector sensor 2
S4 measuring sensor
(optional)
R1 solar pump collector 1
R2 solar pump collector 2

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S1
S3
S2
S4
R2
R1
S1
S4
S2
S3
R1
R2
1.2.8 Connection of system 8
1.2.9 Connection of system 9
Solar system with after-heating by solid fuel boiler
with 1 store, 4 sensors, 1 solar pump and 1 pump for after-
heating.
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 8
ARR 9
Symbol Specification
S1 collector sensor
S2 lower store sensor
S3 upper store sensor
S4 sensor for solid fuel
boiler
R1 solar pump
R2 pump for solid hot fuel
boiler
Symbol Specification
S1 collector sensor
S2 lower store sensor
S3 upper store sensor
S4 heating circuit return
R1 solar pump
R2 3-way-valve

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1
3
2
backward forward
SET
(selection / adjustment mode)
The system monitoring display consists of 3 blocks:
indication 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
mainly 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
indication channel only
2.2.2 Tool bar
The additional symbols of the tool bar indicate the current
system status.
tool bar only
2. Opeartion 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 is blinking.
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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Full Monitoring-Display
+
+
symbol standard blinking
relay 1 active
relay 2 active
maximum store limitation
active / maximum store
temperature exceeded
collector cooling function active
recooling 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

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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
Valve
Store
Store heat-exchanger Store 2 or afterheating (with
an additional symbol)
upper sensor store
Valve
Pump
3-way-valve
The flow direction or the
current breaking capacity
is always shown.
Heating circuit
Stores 1 and 2
with heat-exchanger
Afterheating
with burner symbol
Temperature sensor
2.2.3 System screen
System Screen only
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
Collectors
with collector sensor

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3. Primary commissioning
For primary commissioning the system scheme has to be adjusted first
1.AC power supply must be activated at first.The controller
passes an initialisation phase during which the operating
control lamp is blinking red and green. After having
finished the initialisation, the controller is in automatic
operation with factory settings. The preadjusted system
scheme is Arr 1.
2. Clock time adjustment in channel TIME. By pressing the
button once you can adjust hours, pressing it
once again the minutes.The time can be adjusted by buttons
1 and 2 and saved by pressing the button.
3. - select adjustment channel Arr
- change into -mode (see 2.1)
- adjustment are saved by pressing button
Now the controller is ready for operation and should
enable an optimum operation of the solar system with the
factory settings.
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
backward forward
SET
(selection / adjustment mode)
operating
control lamp
Arr 1 Arr 2
Arr 3 Arr 4
Arr 5 Arr 6
Arr 7 Arr 8
Arr 9

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4. Control 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
the antifreeze is not water or Tyfocor LS / G-LS
(MEDT 0 or 3). Adjustments concerning the antifreeze
content will only make sense if the antifreeze is used 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
Arr
channel 1 2 3 4 5 6 7 8 9 Specification page
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 1below 15
TST1 x x x Temperature store 1below 15
TSTU x x x x x Temperature store 1 at the top 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 "
" " " x x 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
h P 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
time x time 15
Arr 1-9 System 12
DT O x x x x x x Switch-on temperature diff 17
DT1O x x x Switch-on temperature diff 1 17
DT F x x x x x x Switch-off temperature diff 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 Rise 1 17
S MX x x x x x x Maximum temperature store 1 17
S1MX 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 17
EM1 x emergency temperature collector 1 17

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ANL
channel 1 2 3 4 5 6 7 8 9 Specification page
OCX x x x x x x x x option collector cooling collector 1 17
OCX1 x option collector cooling collector 1 17
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 17
OCX2 x option collector cooling collector 2 17
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 18
tST x x x stop time 18
tRUN x x x Ciruclation time 18
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 ∆T3 17
RIS3 x x Rise ∆T3 17
MX3O x x
switch-on treshold for maximum
temperature 17
MX3F x x switch-off treshold for maximum temp. 17
MN3O x x
switch-on treshold for minimum
temperature 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
t1on x Switch on time 1 thermostat 20
t1off x Switch off time 1 thermostat 20
t2on x Switch on time 2 thermostat 16
t2off x Switch off time 2 thermostat 16
t3 on x Switch on time 3 thermostat 20
t3 off x Switch off time 3 thermostat 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 ad-
ditional sensor (without control function).
•S3 : temperature sensor 3
•S4 : temperature sensor 4
Please note:
S3 and S4 are only shown if the temperature sensors are
connected.
S3, S4:
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 fuel boiler
•TRET : temperature heating reverse raising
•TRF : temperature return flow
TFSB,TRET,TRF:
other measured temperatures
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 %
4.1.6 Time
In this channel the current time is indicated.
By pressing button for 2 seconds the hours, by pressing
it again the minutes are displayed blinking.The time can be
set by buttons 1 and 2 and saved by pressing the
button.

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4.1.7 Heat quantity balancing
OHQM
:Heat quantity
measurement
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 chan-
nel OHQM.
The volume flow readable at the flowmeter (l/min) must be
adjusted in the channel FMAX. Antifreeze type and con-
centration of the heat transfer medium are indicated on
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 indica-
tion of the volume flow and the reference sensor of feed
flow S1 and return flow T-. It is shown in kWh-parts in the
indication channel kWh and in MWh-parts in the indica-
tion 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,
symbol is permanently shown on the display.The SET
(3) button must pressed for approx. 2 seconds in order to
get back into the RESET-mode of the counter.The display-
symbol is blinking 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 the data.
In order to interrupt the RESET-procedure, no button
should be pressed for about 5 seconds.The controller
returns 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: 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.
After the operating hours are added up, they can be reset.
As soon as one operating hours channel is selected, 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-symbol
is blinking 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 the data.
In order to interrupt the RESET-procedure, don’t press any
button for about 5 seconds. The controller returns
automatically into the indication mode.
h P / h P1 /h P2:
operating hours counter
Indication channel

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4.1.8 ∆Τ∆Τ
∆Τ∆Τ
∆Τ-regulation
Please note: Switch-on temperature difference DO must
be at least 1 K higher than the switch-off temperature-
difference DF.
DT E / DT1E / DT2E /
DT3E
:
Switch on temperature diff.
Adjustment range
1,0 ... 20,0 K
Factory setting 6.0
DTA / DT1A / DT2A /
DT3A
:
Switch-off temperature diff.
Adjustment range 0,5 ... 19,5 K
4.1.9 Store maximum 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,symbol is shown on the display.
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:
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 :
Rise
Adjustment range 1 ... 20 K
Factory setting 2 K
First the controller works in the same way as a standard
differential controller. If the switch-on difference (DT E /
DT1E /DT2E) is reached, the pump is activated and after
having received a start mpulse (10 s) a minimum pump
speed (nMN = 30 %) is run. If the temperature difference
reaches the set nominal value (DT S /DT1S /DT2S /
DT3S) , the pump speed is increased by one step (10%). If
the difference is increased by 2 K(ANS/ ANS1 / ANS2/
ANS3), the pump speed is increased by 10 % in each case
until the maximum pump speed of 100 % is reached.The
response of the controller can be adjusted by means of the
parameter „rise“. If the adjusted switch-off temperature is
underrun (DTA /DT1A /DT2A),the controller switches-
off.
DT E and DT S are locked against each other. DT S has to
be at least by 0,5 above DT E.
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 fuel boilers
or heat exchange regulation).
If the adjusted value MX3E is exceeded, relay 2 will be
deactivated.When falling below MX3A, the relay will be
switched on again.
Reference sensor:
S3 by Arr 8 (TSTU)
S4 by Arr 2 (TST2)
Is the adjusted value MN3E underrun, relay 2 will be
deactivated. By falling below MN3A, the relay will be
switched on again.
Reference sensor:
S4 by Arr 8 (TFSB)
S3 by Arr 2 (TSTU)
Both switch on- and switch off temperature differences
DT3E and DT3A apply parallely for the maximal- and mi-
nimal temperature limit.
MX3E / MX3A:
Maximum temperature
limitation
Adjustment range
0,0 ... 95,0 °C
Factory setting
MX3E 60,0 °C
MX3A 58,0 °C
Minimum temperature limitation
MN3E / MN3A:
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-controller (solid fuel boiler and heat exchange)

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CMN / CMN1 / CMN2 :
col. minimum temperature
Adjustment range 10 ... 90 °C
Factory setting 10 °C
CMX / CMX1 /CMX2:
collector maximum
temperature
Adjustment range
100... 190 °C
Factory setting 120 °C
4.1.12 System cooling If the adjusted maximum store temperature is reached, the
solar system switches-off. If now the collector temperature
rises to the adjusted maximum collector temperature
(CMX / CMX1 /CMX2), the solar pump remains
activated until this temperature limitation value is again
underrun.The store temperature might continue to rise
(subordinated active maximum store temperature), but only
up to 95 °C (emergency shutdown of the store). If the
store temperature 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 cooled down again by the collector and the tubes
below the adjusted maximum temperature (S MX / S1MX
/ S2MX)(only by activated OREC function).
In case of an activated system is shown on the display
(blinking). 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 range
OFF ... ON
Factory setting OFF
4.1.13 Option collector minimum limitation
OCN / OCN1 /OCN2:
collector minimum limitation
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, is shown on
the display (blinking).
CFR / CFR1 / CFR2
:
antifreeze temperature
Adjustment range -10 ... 10 °C
Factory setting 4,0 °C
4.1.14 Option antifreeze
OCF / OCF1 /OCF2:
antifreeze function
Adjustment range OFF / ON
Factory setting OFF
4.1.11 Collector temperature limitation
Emergency shut down of the collector 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 factory
setting for the temperature limitation is 140 °C - it can be
changed within the adjustment range of 110 ... 200 °C.
Symbol is shown on the display (blinking).
EM / EM1 / EM2
:
temperature limitation
corrector
Adjustment range
110 ... 200 °C,
Factory setting 140 °C
The antifreeze function activates the loading circuit between
collector and store if the adjusted antifreeze function is
underrun in order to protect the medium against freezing
or „thickening“. 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 antifreeze 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).When the oscillating
charge time is over the loading is stopped.The controller
regulates the increase of the 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 oscillating break time starts again. If the
switch-on conditions of the priority store are not reached,
the loading of the lower-ranking store is continued. If the
priority switch has reached its maximum temperature, the
oscillating 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 the
expiration of the solar pump runtime the current collector
temperature is stored as a 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 the runtime of the solar
pump or the standstill 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.
OTC:
Tube collector special
function
Adjustment range:
OFF ... ON
Factory setting: OFF
4.1.16 Recooling function If the adjustem maximum store temperaute (S MX,
S1MX, S2MX) is reached, the solar pump remains
activated in order to avoid an overheating of the collector.
The store temperature 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 / Arr 5,6) (2 / Arr 4) 0-2
oscillating break-time [tSP] 2 min. 1-30 min.
oscillating charge-time [tRUN] 15 min. 1-30 min.
Die DeltaSolDeltaSol
DeltaSolDeltaSol
DeltaSol®®
®®
®
BS Plus priority logic The above-mentioned options and parameters 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 wards the collector are loaded
in numerical order (store 1 or store 2). Usually only one
store is loaded at this point. For Arr= 5, 6 parallel loading
is also possible.
priority:

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For control- and service works the operating mode of the
controller can be manually adjusted by selecting the
adjustment value MM in which the following adjustments
can be made:
4.1.20 4.1.20 Operating mode
• HND1 / HND2
Operating mode
OFF : relay off (blinking) +
AUTO : relay in automatic operation
ON : relay on (blinking) +
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 the use of surplus energy
or after-heating.
•AH O <AH F
the thermostat function is used for after-heating
•AH O >AH F
the thermostat function is used for use of surplus
energy
Symbol will be shown on the display if the second
relay output is activated.
4.1.18 Thermostat function (Arr = 3)
Afterheating
H O:
Thermostat-switch-on
temperature
Adjustment range:
0,0 ... 95,0 °C
Factory setting: 40,0 °C
AH F:
Thermostat-switch-off tempe-
rature
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 set to
100 % in order to deactivate the pump speed
control.
nMN, n1MN, n2MN:
Pump speed control
Adjustment range:
30 ... 100
Factory setting: 30
t1 E, t2 E, t3 E:
Thermostat switch-on time
Adjustment range:
00:00 ... 23:45
Factory setting: 00:00
t1 A, t2 A, t3 A:
Thermostat switch-off time
Adjustment range:
00:00 ... 23:45
Factory setting: 00:00
In order to block the thermostat function for a certain time
span, there are 3 time frames t1 ... t3. If the function should
be activated only between e.g. 6:00 and 9:00, 6:00 should
be set for t1 E and 9:0 should be set for t1 A.The factory
setting for the thermostat function is in continuous
operation.
If all time frames should stop at 00:00 o’ clock, the
thermostat function is continuously in operation
(factory setting).
4.1.21 Language (LG)
The menu language can be adjusted in this channel.
•dE : German
•En : English
LANG:
Adjustment of language
Adjustment range: dE, En
Factory setting: En
use of surplus energy