Apricus DeltaSol BS/4 User manual

Manual
en
*11201745* 11201745
DeltaSol®BS/4 (version 2)
Mounting
Connection
Operation
Application examples
Thanks for buying this product.
Read this manual carefully to get the best perfomance from this unit.
DeltaSol®BS/4

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DeltaSol®BS/4
Proper usage
The solar controller is designed for use in solar thermal
and heating systems in compliance with the technical data
specified in these instructions.
Improper use excludes all liability claims.
Contents
Overview................................................................... 3
1. Installation........................................................... 4
1.1 Mounting ................................................................................4
1.2 Electrical connection...........................................................4
1.3 Data communication/ Bus .................................................5
1.4 Terminal allocation in the different system layouts ....6
System layout 1.....................................................................6
System layout 2.....................................................................8
System-specific functions................................................ 10
System layout 3...................................................................12
2. Operation and function ................................... 14
2.1 Push buttons........................................................................14
2.2System monitoring display ...............................................14
2.3Flashing codes .....................................................................15
3. Commissioning ................................................. 16
4. Channel overview ............................................. 18
4.1 Display channels .................................................................18
4.2 Adjustment channels........................................................ 20
5. Troubleshooting................................................ 27
5.1 Various ................................................................................. 28
6. Accessories........................................................ 30
Impressum.............................................................. 32
Information about the product
Note
Strong electromagnetic fields can impair the
function of the controller.
ÎMake sure the controller as well as the
system are not exposed to strong electro-
magnetic fields.
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.
CE-Declaration of conformity
The product complies with the relevant direc-
tives and is therefore labelled with the CE mark.
The Declaration of Conformity is available upon
request, please contact the manufacturer.
Note
Notes are indicated with an information
symbol.
Disposal
Dispose of the packaging in an environmentally sound
manner.
Dispose of old appliances 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.
ÎArrows indicate instruction steps that should be car-
ried out.
WARNING! Warnings are indicated with a
warning triangle!
They contain information on how
to avoid the danger described.
Safety advice
Please pay attention to:
- safety advice in order to avoid danger and damage to
people and property.
- the valid local standards, regulations and directives!
Target group
These instructions are exclusively addressed to authorised
skilled personnel.
Only qualified electricians should carry out electrical works.
Initial installation must be effected by qualified personnel
named by the manufacturer.
Description of symbols

3 |
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DeltaSol®BS/4
s 3YSTEMMONITORINGDISPLAY
s 5PTO0TTEMPERATURESENSORS
s SEMICONDUCTORRELAYFORPUMPSPEEDCONTROL
s BASICSYSTEMLAYOUTSTOCHOOSEFROM
s (EATQUANTITYMEASUREMENT
s 6"US®
s &UNCTIONCONTROL
s 4HERMOSTATFUNCTIONTIMECONTROLLED
s #ONTROLOFTHESYSTEMBY3ERVICE#ENTER
software possible
s 5SERFRIENDLYOPERATION
s (OUSINGWITHOUTSTANDINGDESIGN
s %XTRALOWPOWERCONSUMPTION
s (%PUMPCONTROLVIAADAPTER
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
)NCLUDEDWITHTHE"3
1 ×DeltaSol®BS/4
1 ×accessory bag
1 ×spare fuse T4A
2 ×screws and wall plugs
4 ×strain relief and screws
1 ×manual
Technical data
(OUSINGplastic, PC-ABS and PMMA
0ROTECTIONTYPEIP 20 / EN 60529
!MBIENTTEMP
0 ... 40 °C [32 ... 104 °F]
3IZE172 ×110 ×47 mm
6.8" ×4.3" ×1.9"
-OUNTINGwall mounting, mounting
into patch-panels is possible
$ISPLAYSystem screen for system
visualisation,16-segment display,7-seg-
ment display, 8 symbols for system
status and operating control lamp
/PERATIONby 3 push buttons at the
front of the housing
&UNCTIONSDifferential temperature
controller with optional add-on system
functions. Function control, operating
hours counter for solar pump, tube
collectorfunction, pump speed con-
trol, thermostat function, drainback
and booster option, and heat quantity
measurement.
)NPUTS 
for 4 Pt1000 temperature sensors
/UTPUTS2 semiconductor relays
"USVBus®
0OWERSUPPLY 100 ... 240 V~
3TANDBYPOWERCONSUMPTION
< 1 W
3WITCHINGCAPACITIES
R1: 1 (1) A 100 ... 240 V~
(semiconductor relay)
R2: 1 (1) A 100 ... 240 V~
(semiconductor relay)
Overview

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DeltaSol®BS/4
display
push button
fuse 4A
cable conduits with strain
relief
cover
1.1 Mounting
The unit must only be installed
sin a dry interior location
sin a non-hazardous location
saway from electromagnetic fields
The controller must additionally be supplied from a double-
pole switch with contact gap of at least 3 mm [0.12“].
Route sensor cables and power supply cables separately.
ÎUnscrew the cross-head screw from the cover and
remove it along with the cover from the housing
ÎMark the upper fastening point on the wall and drill
ÎFasten the enclosed wall plug and screw leaving the
head protruding
ÎHang the housing from the upper fastening point and
mark the lower fastening point through the hole in the
terminal box (centers 130 mm [5.1“])
ÎDrill and insert the lower wall plug
ÎFasten the housing to the wall with lower fastening
screw and tighten
ÎComplete wiring connections in accordance with termi-
nal allocations, see chap. 1.2 “Electrical connection”
ÎPlace the cover back onto the housing
ÎFasten the cover by means of the cross-head screw
1. Installation
104 mm
4.1“
130 mm
5.1“
upper fastening
lower fastening
VBus®
12
S1 S2 S3
3456
LNR1NR2N
201918171615
S4
78 141312
1 (1) A 100 ... 240V~
1 (1) A 100 ... 240V~
R1
R2
T4A
VBus
910
CU 72091163 01
100 ... 240 V~
50-60 Hz
Temp. Sensor Pt1000
IP 20
1.2 Electrical connection
power supply terminals
fuse
load terminalssensor terminal ground terminal
.OTE
The minimum pump speed must be set to 100 %
when auxiliary relays or valves are connected.
WARNING! Electric shock!
Opening the housing will expose
live parts!
ÎSwitch off power supply and discon-
nect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to da-
mage to electronic components!
ÎTake care to discharge properly
before touching the inside of the
device. To do so, touch a grounded
surface such as a radiator or tap!

5 |
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DeltaSol®BS/4
$ATACOMMUNICATION"US The controller is equipped with a 6"US®for data transfer
with and energy supply to external modules. The connec-
tion is carried out at the terminals marked “VBus” (either
polarity). One or more VBus®modules can be connected
via this data bus, such as
sGA3 large display, SD3 smart display
sDL2 datalogger
sVBus®/USB or VBus®/LAN interface adapter
sVBus®/PWM interface adapter
sAM1 alarm module
sWMZ calorimeter module
By means of a DL2 datalogger or an interface adapter, the
controller can be connected to a PC or a computer net-
work.With the ServiceCenter Software (RSC) the control-
ler measurements can be read out, processed and visualised.
The software allows easy function control of the system.
VBus®
connection terminals
Connecting the device to the mains supply must always be
the last step of the installation!
The power supply to the controller must be carried out via
an external power switch (last step!). The supply voltage
must be 100 ... 240 V~ (50 ... 60 Hz). Flexible cables must
be attached 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:
sRelay 1
18 = conductor R1
17 = neutral conductor N
13 = ground conductor
sRelay 2
16 = conductor R2
15 = neutral conductor N
14 = ground conductor
The mains supply is to be carried out at the terminals:
19 = neutral conductor N
20 = conductor L
12 = ground terminal
The temperature sensors (S1 up to S4) are to be
connected to the following terminals with either polarity:
1 / 2 = Sensor 1 (e.g. Sensor collector)
3 / 4 = Sensor 2 (e.g. Sensor store)
5 / 6 = Sensor 3 (e.g. Sensor store top)
7 / 8 = Sensor 4 (e.g. Sensor return)
All Pt1000 temperature sensors are equipped with a
platinum measuring element in their tip. The electrical
resistance of the measuring element changes in relation
to the temperature (see table in chap. 5).
The difference between &+0 and &20 type sensors only
lies in the cable insulation material. The insulation material
of FKP type sensor cables resists a higher temperature, so
that FKP type sensors should be used as collector sensors.
FRP type sensors are best used as reference sensors in
stores or pipes.
LNR1NR2N
201918171615141312
1 (1)A(
1
100 ... 240) V~
(1)A(100 ... 240) V~
R1
R2
12
S1 S2 S3
3456
Te mp. Sensor
Pt1000
S4
78
Sensor terminals S1 ... S4
Grounding and load terminals

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DeltaSol®BS/4
910
VBus
S1
S2
S4 / TR
System layout 1
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
operated 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.
R1
Arr 1
S3
1.4 Terminal allocation in the different system layouts
Display Channels
Channel Description Terminal Page
INIT x* ODB initialisation active - 18
FLL x* ODB filling time active - 18
STAB x* ODB stabilisation in progress - 18
COL x Temperature collector S1 18
TST x Temperature store S2 18
S3 x Temperature sensor 3 S3 18
TSTT x* Te m p e r a t u r s t o r e a t t h e t o p S3 18
S4 x Temperature sensor 4 S4 18
TR x* Temperature return sensor S4 18
n % x Pump speed R1 R1 19
hP x Operating hours R1 R1 19
hP1 x* Operating hours R1 (if OBST is activated) R1 19
hP2 x* Operating hours R2 (if OBST is activated) R2 19
kWh x* Heat quantity kWh - 19
MWh x* Heat quantity MWh - 19
TIME x Time - 16
Sensors S3 and S4 can optionally be connected for mea-
surement purposes. S3 can optionally be used as reference
sensor for the store emergency shutdown option (OSEM).
If heat quantity measurement (OHQM) is activated, sensor
S4 has to be connected as return sensor.
If the drainback option (ODB) is activated, relay 2 can be
used to operate a booster pump by activating the booster
function (OBST).
S1
S3
S2
S4/TR
R1 R2
exemplary
Drainback system layout
(with booster pump)

7 |
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DeltaSol®BS/4
,EGEND
Symbol Specification
x Channel is available
x* Channel is available if the corresponding option is activated.
s* System-specific channel, only available if the corresponding option is activated
Adjustment Channels
Channel Description Factory setting Page
Arr x System 1 20
DT O x Switch-on temperature difference 8.0 K [16.0 °Ra] 20
DT F x Switch-off temperature difference 1.0 K [2.0 °Ra] 20
DT S x Nominal temperature difference 10.0 K [20.0 °Ra] 20
RIS x Rise control R1 2 K [4 °Ra] 20
nMN x Minimum pump speed 100 % 20
S MX x Maximum store temperature 85 °C [186 °F] 21
OSEM xOption store emergency shutdown OFF 21
EM x Emergency temperature collector 130 °C [270 °F] 21
Emergency temperature collector if ODB is activated: 95 °C [200 °F] 21
OCC x Option collector cooling OFF 22
CMX x* Maximum collector temperature 110 °C [230 °F] 22
OSYC x Option system cooling OFF 22
DTCO x* Cooling switch-on temperature difference 20.0 K [40.0 °Ra] 22
DTCF x* Cooling switch-off temperature difference 15.0 K [30.0 °Ra] 22
OSTC x Option store cooling OFF 23
OHOL x* Option holiday cooling OFF 23
THOL x* Holiday cooling temperature 40 °C [110 °F] 23
OCN x Option minimum limitation OFF 23
CMN x* Minimum collector temperature 10 °C [50 °F] 23
OCF x Option antifreeze ON 23
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 23
O TC x Option tube collector OFF 24
TCST x* OTC starting time 07:00 24
TCEN x* OTC ending time 19:00 24
TCRU x* OTC runtime 30 s 24
TCIN x* OTC standstill interval 30 min 24
OHQM x Option heat quantity measurement OFF 24
FMAX x* Maximum flow 6.0 l 24
MEDT x* Antifreeze type 1 24
MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % 24
ODB x Drainback option OFF 25
tDTO x* ODB switch-on condition - time period 60 s 25
tFLL x* ODB filling time 5.0 min 25
tSTB x* ODB stabilisation time 2.0 min 25
OBST s* Option booster function OFF 25
MAN1 x Manual operation R1 Auto 26
MAN2 x Manual operation R2 Auto 26
ADA1 xHE pump control OFF 26
LANG x Language En 26
UNIT x Temperature unit °C 26
RESE x Reset - back to factory settings 26
W004#### Version number

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DeltaSol®BS/4
910
VBus
R2
S1
S2
R1
S3
S4 / TR
System layout 2
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
operated 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 thermostatic function, which ope-
rates relay 2 for afterheating or heat dump purposes, when
Arr 2
Display Channels
Channel Description Terminal Page
INIT x* ODB initialisation active - 18
FLL x* ODB filling time active - 18
STAB x* ODB stabilisation in progress - 18
COL x Temperature collector S1 18
TSTB x Temperature store 1 base S2 18
TSTT x Temperature store 1 at the top S3 18
TDIS s* Thermal disinfection temperature S3 18
S4 x Temperature sensor 4 S4 18
TR x* Temperature return sensor S4 18
n1 % x Pump speed R1 R1 19
h P1 x Operating hours R1 R1 19
h P2 x Operating hours R2 R2 19
kWh x* Heat quantity kWh - 19
MWh x* Heat quantity MWh - 19
CDIS s* Countdown of monitoring period - 19
SDIS s* Starting time display - 19
DDIS s* Heating period display - 19
TIME x Time - 16
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 also be optionally used as a reference sensor
for the thermal disinfection function OTD or the store
emergency shutdown option (OSEM).
Sensor S4 can optionally be connected for measurement
purposes. If heat quantity measurement (OHQM) is ac-
tivated, sensor S4 has to be connected as return sensor.

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DeltaSol®BS/4
Adjustment Channels
Channel Description Factory setting Page
Arr x System 2 20
DT O x Switch-on temperature difference 8.0 K [16.0 °Ra] 20
DT F x Switch-off temperature difference 1.0 K [2.0 °Ra] 20
DT S x Nominal temperature difference 10.0 K [20.0 °Ra] 20
RIS x Rise control R1 2 K [4 °Ra] 20
n1MN x Minimum pump speed R1 100 % 20
S MX x Maximum store temperature 85 °C [186 °F] 21
OSEM xOption store emergency shutdown OFF 21
EM x Emergency temperature collector 130 °C [270 °F] 21
Emergency temperature collector if ODB is activated: 95 °C [200 °F] 21
OCC x Option collector cooling OFF 22
CMX x* Maximum collector temperature 110 °C [230 °F] 22
OSYC x Option system cooling OFF 22
DTCO x* Cooling switch-on temperature difference 20.0 K [40.0 °Ra] 22
DTCF x* Cooling switch-off temperature difference 15.0 K [30.0 °Ra] 22
OSTC x Option store cooling OFF 23
OHOL x* Option holiday cooling OFF 23
THOL x* Holiday cooling temperature 40 °C [110 °F] 23
OCN x Option minimum limitation OFF 23
CMN x* Minimum collector temperature 10 °C [50 °F] 23
OCF x Option antifreeze ON 23
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 23
O TC x Option tube collector OFF 24
TCST x* OTC starting time 07:00 24
TCEN x* OTC ending time 19:00 24
TCRU x* OTC runtime 30 s 24
TCIN x* OTC standstill interval 30 min 24
OHQM x Option heat quantity measurement OFF 24
FMAX x* Maximum flow 6.0 l 24
MEDT x* Antifreeze type 1 24
MED% x* Antifreeze concentration 45 % 24
AH O s Switch-on temp. for thermostat 1 40 °C [110 °F] 10
AH F s Switch-off temp. for thermostat 1 45 °C [120 °F] 10
t1 O s Switch-on time 1 thermostat 00:00 10
t1 F s Switch-off time 1 thermostat 00:00 10
t2 O s Switch-on time 2 thermostat 00:00 10
t2 F s Switch-off time 2 thermostat 00:00 10
t3 O s Switch-on time 3 thermostat 00:00 10
t3 F s Switch-off time 3 thermostat 00:00 10
ODB x Drainback option OFF 25
tDTO x* ODB switch-on condition - time period 60 s 25
tFLL x* ODB filling time 5.0 min 25
tSTB x* ODB stabilisation time 2.0 min 25
OTD s Option thermal disinfection OFF 11
PDIS s* Monitoring period 01:00 11
DDIS s* Heating period 01:00 11
TDIS s* Disinfection temperature 60 °C [140 °F] 11
SDIS s* Starting time 00:00 11
MAN1 x Manual operation R1 Auto 26
MAN2 x Manual operation R2 Auto 26
ADA1 xHE pump control OFF 26
LANG x Language En 26
UNIT x Temperature unit °C 26
RESE x Reset - back to factory settings 26
W004#### Version number
,EGEND
Symbol Specification
x Channel is available
x* Channel is available if the corresponding option is activated.
s Channel is specifically available in this system layout
s* System-specific channel, only available if the corresponding option is activated

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DeltaSol®BS/4
The thermostat function works independently from the
solar operation and can be used for using surplus energy
or for afterheating.
s !(/< !(&
thermostat function for afterheating
s !(/ > !(&
thermostat function for using surplus energy
The symbol will be shown on the display if the second
relay output is activated.
Thermostat function
Afterheating
!(/
Thermostat switch-on temp.
Adjustment range:
0.0 ... 95.0 °C
[30.0...200.0 °F]
in steps of 0.5 K [1.0 °Ra]
Factory setting:
40.0 °C [110.0°F]
!(&
Thermostat switch-off temp.
Adjustment range:
0.0 ... 95.0 °C
[30.0... 200.0 °F]
in steps of 0.5 K [1.0 °Ra]
Factory setting:
45.0 °C [120.0 °F]
T/T/T/
Thermostat switch-on time
Adjustment range:
00:00 ...23:45
Factory setting: 00:00
T&T&T&
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 three time frames t1 ... t3. If the function
should be active between 6:00 and 9:00, set t1 O to 6:00
and T& to 9:00.
If all time frames are set to 00:00 o’clock, the thermostat
function is continuously activated (factory setting).
Use of surplus energy
Reference sensor for the thermostat function is S3!
System-specific functions The following functions are exclusively available in system
layout 2.The corresponding channels will not be available in
any other system layout.

11 |
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DeltaSol®BS/4
When a starting time for thermal disinfection with starting
delay is adjusted in SDIS, the thermal disinfection will be
delayed until that time, even after the CDIS has counted
down to 00:00. If CDIS ends, for example, at 12:00 o‘clock,
and SDIS has been set to 18:30, relay 2 will be operated
with a delay of 6.5 hours at 18:30 instead of 12:00.
During the waiting time, SDIS is displayed with the adjusted
starting time (flashing).
If, during the waiting time, the temperature at S3 exceeds
TDIS for the adjusted heating period DDIS, thermal
disinfection is considered complete and a new monitoring
period begins.
If the starting time is adjusted to 00:00 (factory setting), the
delay function is inactive.
Upon delivery, OTD is deactivated. The adjustment values
PDIS, TDIS, DDIS and SDIS are displayed after the
option has been activated. After the thermal disinfection
function has been completed, the values will be “hidden”
and the monitoring period will be displayed.
SDIS
Starting time
Adjustment range:
00:00 ... 24:00 (o‘clock)
Factory setting: 00:00
Thermal disinfection with starting delay
/PTION4HERMALDISINFECTIONOFTHEUPPER$(7
ZONE/4$
TDIS
Disinfection temperature
Adjustment range:
0 ... 95 °C [30 ... 200 °F]
in steps of 1 K [2 °Ra]
Factory setting:
60 °C [140 °F]
DDIS
Heating period
Adjustment range:
00:00 ... 23:59 (hh:mm)
Factory setting: 01:00
PDIS:
Monitoring period
Adjustment range:
0 ... 30:0 ... 24 h (dd:hh)
Factory setting: 01:00
This function is used for protecting the upper store zone
against Legionella by activating the afterheating.
Reference sensor for the thermal disinfection is S3!
ÎTo activate the function, select “On” in the OTD
channel.
For thermal disinfection, the temperature in the upper
DHW store zone has to be monitored. This protection is
ensured when, during the monitoring period (PDIS), the
disinfection temperature (TDIS) is continuously exceeded
for the entire heating period (DDIS). S3 is used as the
reference sensor and displayed as TSTT.
If OTD is activated, PDIS will start as soon as the tem-
perature at S3 falls below TDIS. In the display channel
CDIS, the remaining time of PDIS is counted backwards.
If, during the monitoring period, the temperature at S3
exceeds TDIS continuously for the duration of DDIS,
thermal disinfection is considered complete and a new
monitoring period begins.
If CDIS counts down to 00:00, relay 2 will be operated
in order to use the afterheating for thermal disinfection.
CDIS will then be replaced with a display channel DDIS
showing the adjusted heating period. DDIS will start coun-
ting down the heating period as soon as TDIS is exceeded
at S3. As long as DDIS is active, the temperature at S3 will
be displayed as TDIS instead of TSTT.
If, during DDIS, the temperature at S3 exceeds TDIS by
more than 5 K [10 °Ra], relay 2 is switched off until the
temperature falls below TDIS + 2 K [4 °Ra].
If, during DDIS, the temperature at S3 falls below TDIS,
the heating period will restart. DDIS can only be com-
pleted when TDIS is exceeded without interruption.
Due to the flexible control logic, the exact time of thermal
disinfection is not predictable. In order to set a fixed time
for the disinfection to be run, the starting delay SDIS must
be employed:
OTD:
Thermal disinfection function
Adjustment range: ON / OFF
Factory setting: OFF

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DeltaSol®BS/4
System layout 3
Arr 3 VBus
10
9
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
operated 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.
If the maximum collector temperature (CMX) is reached, the
solar pump will be operated by relay 1 and the 3-way-valve
S1
S2
S4 / TR
R1
S3
R2
Display Channels
Channel Description Terminal Page
COL x Temperature collector S1 18
TST x Temperature store S2 18
S3 x Temperature sensor 3 S3 18
TSTT x* Te m p e r a t u r s t o r e a t t h e t o p S3 18
S4 x Temperature sensor 4 S4 18
TR x* Temperature return sensor S4 18
n % x Pump speed relay R1 18
h P1 x Operating hours R1 R1 19
h P2 x Operating hours R2 R2 19
kWh x* Heat quantity kWh - 19
MWh x* Heat quantity MWh - 19
TIME x Time - 16
will be operated by relay 2 in order to direct the surplus
energy to a heat dump. For security purpose this will be
carried out only if the store temperature is below the non-
adjustable emergency shutdown of 200 °F.
Sensors S3 and S4 can optionally be connected for mea-
surement purposes. S3 can optionally be used as reference
sensor for the store emergency shutdown option (OSEM).
If heat quantity measurement (OHQM) is activated, sensor
S4 has to be connected as return sensor.

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DeltaSol®BS/4
,EGEND
Symbol Specification
x Channel is available
x* Channel is available if the corresponding option is activated.
s Channel is specifically available in this system layout
Adjustment Channels
Channel Description Factory setting Page
Arr x System 3 20
DT O x Switch-on temperature difference 8.0 K [16.0 °Ra] 20
DT F x Switch-off temperature difference 1.0 K [2.0 °Ra] 20
DT S x Nominal temperature difference 10.0 K [20.0 °Ra] 20
RIS x Rise control R1 2 K [4 °Ra] 20
nMN x Minimum pump speed 100 % 20
S MX x Maximum store temperature 85 °C [186 °F] 21
OSEM xOption store emergency shutdown OFF 21
EM x Emergency temperature collector 130 °C [270 °F] 21
CMX s Maximum collector temperature 110 °C [230 °F] 22
OCN x Option minimum limitation OFF 23
CMN x* Minimum collector temperature 10 °C [50 °F] 23
OCF x Option antifreeze ON 23
CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 23
O TC x Option tube collector OFF 24
TCST x* OTC starting time 07:00 24
TCEN x* OTC ending time 19:00 24
TCRU x* OTC runtime 30 s 24
TCIN x* OTC standstill interval 30 min 24
OHQM x Option heat quantity measurement OFF 24
FMAX x* Maximum flow 6.0 l 24
MEDT x* Antifreeze type 1 24
MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % 24
MAN1 x Manual operation R1 Auto 26
MAN2 x Manual operation R2 Auto 26
ADA1 xHE pump control OFF 26
LANG x Language En 26
UNIT x Temperature unit °C 26
RESE x Reset - back to factory settings 26
W004#### Version number

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DeltaSol®BS/4
The system monitoring display consists of three blocks:
channel display, tool bar and system screen (active
system layout).
The channel display consists of 2 lines. The upper line
is an alpha-numeric 16-segment display (text display) for
displaying channel names and menu items. In the lower
7-segment display, the channel values and the adjustment
parameters are displayed.
Te m p e r a t u r e s a r e e i t h e r i n d i c a t e d i n ° F o r ° C , w h e r e a s t e m -
perature differences are indicated in K or °Ra respectively.
The additional symbols of the tool bar indicate the current
system status.
channel display
tool bar
2. Operation and function
2.1 Push buttons
The controller is operated via three push buttons below
the display.
"UTTON is used for scrolling forward through the indica-
tion menu or to increase the adjustment values. "UTTON is
used for scrolling backward and reducing values. "UTTON
is used for selecting channels and confirming adjustments.
During normal operation, only the display channels are
shown.
ÎScroll through the display channels by pressing buttons
1 and 2
!CCESSINGTHEADJUSTMENTCHANNELS
ÎScroll down in the display menu and press button 1
for approx. 2 seconds after you have reached the last
display item.
When an adjustment value is shown on the display,
is indicated to the right of the channel name.
ÎPress button 3 in order to access the adjustment mode
starts flashing.
ÎAdjust the value using buttons 1 and 2
ÎBriefly press button 3, permanently appears,the
adjusted value will be saved.
2.2 System-Monitoring-Display
system monitoring display
1
3
2
backward (-) forward (+)
OK
(selection / adjustment mode)
operating control lamp
Status standard flashing
relay 1 active
relay 2 active
maximum store temperature exceeded
store emergency shutdown active +
collector emergency shutdown active
collector cooling active
system cooling active
store cooling active +
holiday cooling function activated
holiday cooling function active +
collector minimum limitation active
antifreeze function activated
antifreeze function active
manual operation relay 1 ON +
manual operation relay 2 ON +
manual operation relay 1 / 2 OFF
sensor defective

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DeltaSol®BS/4
The system screen (active system layout) shows the system
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.
3-way valve
The flow direction or the
actual switching position is
shown
System screen
system screen
green: everything OK
red/green flashing initialisation phase
manual operation
red flashing: sensor fault
(sensor symbol is flashing quickly)
&LASHINGCODES
LED flashing codes
System screen flashing codes
Pump
Store
with heat exchanger
Afterheating
with burner symbol
Temperature sensor
Collector
with collector sensor
collector sensor
collector
valve
store
store heat exchanger
store sensor (top)
store sensor
(base)
afterheating pump
solar pump
booster pump
afterheating with
burner symbol
heat exchanger
(heat dump)
sPumps are flashing when the corresponding relay is swit-
ched on
sSensor symbols are flashing if the corresponding sensor
display channel is selected
sSensors are flashing quickly in the case of a sensor fault
sBurner symbol is flashing if the afterheating is active

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DeltaSol®BS/4
3. Commissioning ÎEstablish the power supply
During a short initialisation phase, the operating control
lamp flashes red and green.
When the controller is commissioned for the first time
or after a reset, it will run a commissioning menu. The
commissioning menu leads the user through the most
important adjustment channels needed for operating the
system.
/PERATINGTHECOMMISSIONINGMENU
ÎEnter the channel by pressing button 3
The symbol flashes.
ÎAdjust the value by pressing buttons 1 and 2
ÎSave the adjustment by pressing button 3 again
The symbol stops flashing.
ÎPress button 1 or 2 to switch to the next or previous
channel
1
23
(OK)
The three pushbuttons of the BS/4 controller
The commissioning menu consists of the following 6
channels:
1. Language
ÎAdjust the desired menu language in this channel
s dE : German
sEn : English
sFr : French
,!.'
Language selection
Selection: dE,En,Fr
Factory setting: En
 5NIT
ÎAdjust the unit in which temperatures and temperature
differences shall be displayed
5.)4
Temperature unit selection
Selection: °F, °C
Factory setting: °C
3. Time
ÎAdjust the current time for the real time clock
The hours and minutes have to be adjusted separately, first
the hours, then the minutes.
4)-%
Real time adjustment

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DeltaSol®BS/4
Arr:
System layout selection
Adjustment range:1 ... 3
Factory setting: 1
4. System layout
ÎAdjust the desired system layout of your solar thermal
system
For a detailed description of the different system layouts
selectable, see chapter 1.4.
If the system layout selection is changed later on, any
previous adjustments which have been made in the other
channels will be lost. Therefore, changing the system layout
is always followed by a security enquiry.
/NLYCONlRMTHESECURITYENQUIRYIFYOUARESURETHAT
you wish to change the system layout selection!
3ECURITYENQUIRY ÎTo confirm the security enquiry, press button 3
/VERVIEWOFSYSTEMLAYOUTS
Arr 1 : standard solar system layout
Arr 2 : solar system layout with afterheating
Arr 3 : standard solar system layout with heat dump
Arr 3
Arr 1 Arr 2
Now the controller is ready for operation with typical
settings to suit the selected system layout.
The settings made in the commissioning menu can be
changed later on in the corresponding adjustment channels.
Additional functions and options can of course be individu-
ally adjusted as well (see chap. 4.2).
5. Maximum store temperature
ÎAdjust the desired maximum store temperature
S MX:
Maximum store temp.
Adjustment range:
4 ... 95 °C [40 ... 200 °F]
Arr 3:
4 ... 90 °C [40 ... 190 °F]
in steps of 1 K [2 °Ra]
Factory setting: 85 °C [186 °F]
.OTE
The controller is also equipped with a non-
adjustable emergency shutdown function, which
will shut the system down if the store reaches
95 °C [200 °F].
6. Minimum pump speed
ÎAdjust a minimum speed for the pump
N-.
Pump speed control
Adjustment range:
30 ...100
in steps of 5 %
Factory setting: 100
.OTE
If a load which is not speed-controlled is used,
the value must be set to 100 %.
Completing the commissioning menu
After the last channel of the commissioning menu has been
adjusted and confirmed, the controller asks for confirma-
tion of the adjustments.
ÎTo confirm the adjustments made in the commissioning
menu, press button 3
#ONlRMATIONENQUIRY

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DeltaSol®BS/4
Indication of collector temperature Indicates the current collector temperature.
#/,
Collector temperature
Display range: -40...+260 °C
[-40...+500 °F]
Indication of store temperatures Indicates the current store temperature.
sTST : store temperature
sTSTB : store temperature base
sTSTT : store temperature top
sTDIS : thermal disinfection temperature
(replaces TSTT if, during thermal disinfection, the he-
ating period DDIS is active)
434" and TDIS are available in Arr = 2 only
434434"43444$)3
Store temperatures
Display range: -40...+260 °C
[-40...+500 °F]
Indication of sensors 3 and 4 Indicates the current temperature of the corresponding
additional sensor (without control function).
sS3 : temperature sensor 3 (Arr = 1 and 3 only)
sS4 : temperature sensor 4
33
Sensor temperatures
Display range: -40...+260 °C
[-40...+500 °F]
Indication of return temperature If heat quantity measurement is active, the temperature at
sensor 4 is indicated as TR.
42
Return temperature
Display range: -40...+260 °C
[-40...+500 °F]
.OTE
S3 and S4 will only be indicated if the temperature
sensors are connected.
Initialisation Indicates the time adjusted in tDTO, running backwards.
).)4
ODB initialisation active
&ILLINGTIME Indicates the time adjusted in T&,,, running backwards.
&,,
ODB filling time active
Stabilisation Indicates the time adjusted in T34", running backwards.
34!"
Stabilisation
4.1 Display channels NOTE
The displayed values and adjustment channels
depend on which system layout, which options
and functions have been selected. Only values
and adjustment channels available for the indi-
vidual settings selected will appear in the menu.
Indication of drainback time periods
4. Channel overview

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DeltaSol®BS/4
Indication of current pump speed
Indicates the current pump speed of the solar pump.
N
Current pump speed
Display range: 30 ...100 %
Operating hours counter The operating hours counter accumulates the solar opera-
ting hours of the respective relay (H0H0H0). Full
hours are displayed.
The accumulated operating hours can be set back to 0. As
soon as one operating hours channel is selected, the symbol
is displayed.
ÎIn order to access the RESET-mode of the counter,
press button 3 for approx. 2 seconds.
The display symbol will flash and the operating hours
will be set to 0.
ÎConfirm the reset with button 3 in order to finish the
reset.
In order to interrupt the RESET-process, do not press a
button for about five seconds. The display returns to the
display mode.
h P / h P1 /H0
Operating hours counter
Display channel
K7H-7H: Heat quantity
in kWh / MWh
Display channel
Indicates the energy gained in heat quantity – only available if
heat quantity measurement (OHQM) is activated.
The flow rate as well as the reference sensors S1 (flow) and
S4 (return) are used for calculating the heat quantity supplied.
It is shown in kWh in the channel kWh and in MWh in the
channel MWh. The overall heat quantity results from the
sum of both values.
The accumulated heat quantity can be set back to 0. As soon
as one of the display channels of the heat quantity is selected,
the symbol is permanently shown on the display.
ÎPress button 3 for about 2 seconds in order to access
the RESET mode of the counter.
The display symbol will flash and the heat quantity value
will be set to 0.
ÎIn order to finish this process, press button 3 to confirm.
In order to interrupt the RESET-process, do not press a
button for about five seconds. The display returns to the
display mode.
CDIS
Countdown of monitoring
period
Display range:
0 ... 30:0 ... 24 (dd:hh)
If the thermal disinfection option (OTD) is activated and
the monitoring period is in progress, the remaining moni-
toring time will be displayed as CDIS (in days and hours)
and counted backwards.
SDIS
Starting time display
Display range:
00:00 ... 24:00 (hh:mm)
DDIS
Heating period display
Display range:
00:00 ... 24:00 (hh:mm)
If the thermal disinfection option (OTD) is activated and
the heating period is in progress, the remaining time of the
heating period is displayed (in hours and minutes) in this
channel, counting backwards.
If the thermal disinfection option (OTD) is activated and
a starting delay time has been adjusted, the adjusted delay
time is displayed (flashing) in this channel.
TIME Indicates the current time.
ÎPress button 3 for two seconds to adjust the hours
ÎSet the hours by pressing buttons 1 and 2
ÎPress button 3 again to adjust the minutes
ÎSet the minutes by pressing buttons 1 and 2
ÎPress button 3 in order to save the adjustments

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DeltaSol®BS/4
∆T-regulation
DT O:
Switch-on temperature diff.
Adjustment range:
1.0... 20.0K [2.0... 40.0°Ra]
in steps of 0.5K [1°Ra]
Factory setting: 8.0 K [16.0 °Ra]
$4&:
Switch-off temperature diff.
Adjustment range:
0.5... 19.5K [1.0... 39.0°Ra]
in steps of 0.5K [1°Ra]
Factory setting: 1.0 K [2.0 °Ra]
The controller works as a standard differential controller. If
the switch-on difference is reached, the pump is activated.
When the temperature difference falls below the adjusted
switch-off temperature difference, the relay switches off.
.OTE
The switch-on temperature difference must be
at least 0.5 K [ 1 °Ra] higher than the switch-off
temperature difference.
DT S:
Nominal temperature difference
Adjustment range:
1.5 ... 30.0 K [3.0... 60.0°Ra]
in steps of 0.5K [1°Ra]
Factory setting: 10.0K [20.0 °Ra]
RIS:
Rise
Adjustment range:
1 ... 20 K [2 ... 40 °Ra]
in steps of 1 K [2 °Ra]
Factory setting: 2 K [4°Ra]
Pump speed control
When the switch-on temperature difference is reached,
the pump is activated at full speed for 10 seconds.Then, the
speed is reduced to the minimum pump speed value (factory
setting = 30 %).
If the temperature difference reaches the adjusted nominal
temperature difference, the pump speed increases by one
step (10 %). If the difference increases by the adjustable rise
value, the pump speed increases by 10 % respectively until the
maximum pump speed of 100 % is reached.The response of
the controller can be adapted via the parameter “Rise”.
.OTE
The nominal temperature difference must be
at least 0.5 K [1°Ra] higher than the switch-on
temperature difference.
4.2 Adjustment channels
.OTE
For pump speed control,the operation mode of
relay 1 must be set toAuto (adjustment channel
MAN1)
System layout selection
Arr:
System layout selection.
Adjustment range: 1 ... 3
Factory setting: 1
In this channel, a pre-defined system layout can be selected.
Each system layout has a set of pre-programmed settings
that can be individually changed.
If the system layout selection is changed later on, all adjust-
ments made in the other channels will be lost. Therefore,
changing the system layout is always followed by a security
enquiry.
/NLYCONlRMTHESECURITYENQUIRYIFYOUARESURETHAT
you wish to change the system layout selection!
.OTE
When the drainback option /$" is activated,
the temperature differences DT O, $4& and
DT S are set to a fixed adjustment:
DT O = 10 K [20 °Ra]
DT F = 1 K [2 °Ra]
DT S = 15 K [30 °Ra]
Previous adjustments made in these channels will
be overridden and may have to be entered again if
/$" is deactivated later on.
3ECURITYENQUIRY
ÎTo confirm the security enquiry, press button 3