Resol DeltaSol BX User manual

*11209187* 11209187
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual carefully.
DeltaSol® BX
www.resol.com
Manual
en
Solar controller
Manual for the
specialised craftsman
Installation
Operation
Functions and options
Troubleshooting
from version 3.01
The Internet portal for easy and secure access
to your system data – www.vbus.net

2
en
© 20170117_11209187_DeltaSol_BX.monen
Safety advice
Please pay attention to the following safety advice in order to avoid danger and
damage to people and property.
Instructions
Attention must be paid to the valid local standards, regulations and directives!
Information about the product
Proper usage
The solar controller is designed for electronically controlling standard solar ther-
mal systems and heating systems in compliance with the technical data specied
in this manual.
Improper use excludes all liability claims.
EU declaration of conformity
The product complies with the relevant directives and is therefore
labelled with the CE mark. The Declaration of Conformity is available
upon request, please contact RESOL.
Note:
Strong electromagnetic elds can impair the function of the controller.
ÎMake sure the controller as well as the system are not exposed to
strong electromagnetic elds.
Target group
These instructions are exclusively addressed to authorised skilled personnel.
Only qualied electricians should carry out electrical works.
Initial installation must be effected by the system owner or qualied personnel
named by the system owner.
Description of symbols
WARNING! Warnings are indicated with a warning triangle!
ÎThey contain information on how to avoid the danger
described.
Signal words describe the danger that may occur, when it is not avoided.
• WARNING means that injury, possibly life-threatening injury, can occur.
• ATTENTION means that damage to the appliance can occur.
Note:
Notes are indicated with an information symbol.
ÎArrows indicate instruction steps that should be carried out.
Disposal
• Dispose of the packaging in an environmentally sound manner.
• Dispose of old appliances in an environmentally sound manner. Upon request we
will take back your old appliances bought from us and guarantee an environmen-
tally sound disposal of the devices.
Subject to technical change. Errors excepted.

3
en
1 Overview ..............................................................................................4
2 Installation ...........................................................................................5
2.1 Mounting .......................................................................................................................5
2.2 Electrical connection ..................................................................................................5
2.3 Data communication / Bus .........................................................................................6
2.4 SD memory card slot.................................................................................................6
2.5 System overview..........................................................................................................7
2.6 Systems..........................................................................................................................9
3 Operation and function ....................................................................35
3.1 Buttons ........................................................................................................................35
3.2 Menu structure ..........................................................................................................36
3.3 Selecting menu points and adjusting values.........................................................36
4 System-Monitoring-Display ..............................................................36
4.1 System screen ............................................................................................................37
4.2 Further indications....................................................................................................37
DeltaSol®BX solar controller
With its versatile software, the DeltaSol®BX can control even complex sys-
tems easily and reliably.The DeltaSol®BX is equipped with 26 pre-programmed
basic systems for a broad range of 1- and 2-store systems. Pre-dened functions
facilitate system parameterisation.
5 Status level / Measurement values....................................................38
6 Commissioning..................................................................................39
7 Indications, functions and options....................................................41
7.1 Status level ..................................................................................................................41
7.2 Menu overview ..........................................................................................................45
8 User code and short menu – Adjustment values ...........................68
9 Messages.............................................................................................68
10 Troubleshooting.................................................................................69
11 Accessories ........................................................................................72
11.1 Sensors and measuring instruments .....................................................................73
11.2 VBus®accessories .....................................................................................................73
11.3 Interface adapters......................................................................................................73
12 Index ...................................................................................................74
Contents
The integrated SD card slot enables an easy datalogging to an SD card as well as a
quick and effortless transfer of logged system data to a PC.The extra-large display
vouches for a precise visualisation of the system status.

4
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1 Overview
• 4 relay outputs, 5 Pt1000 temperature sensor inputs
• 2 inputs for analogue Grundfos Direct Sensors™ temperature sen-
sors
• 2 PWM outputs for speed control of high-efciency pumps
• 26 basic systems to choose from
• Drainback option
• Unit °F and °C selectable
Technical data
Inputs: 5 inputs for Pt1000 temperature sensors, 2 analogue Grundfos Direct
Sensors™, 1 V40 impulse input,
Outputs: 3 semiconductor relays, 1 electromechanical relay, 2 PWM outputs
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
2 (1) A 240 V~ (electromechanical relay)
Total switching capacity: 4 A 240 V~
Power supply: 100 … 240 V~ (50 … 60 Hz)
Supply connection: type Y attachment
Standby: 0.57 W
Temperature controls class: I
Energy efciency [%]: 1
Mode of operation: type 1.B.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®, SD card slot
VBus®current supply: 35 mA
Functions: function control, operating hours counter, tube collector function,
thermostat function, speed control, heat quantity measurement, etc.
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, also suitable for mounting into patch panels
Indication / Display: System-Monitoring-Display, for visualisation of the systems,
16-segment display, 7-segment display, 8 symbols, operating control LED (direction-
al pad) and background illumination
Operation: 7 push buttons at the front of the housing
Protection type: IP 20 / DIN EN 60529
Protection class: I
Ambient temperature: 0 … 40 °C
Degree of pollution: 2
Dimensions: 198 x 170 x 43 mm
upper fastening point
lower fastening point
170
198
43

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5
InstallationIndications, functions and optionsMessages Commissioning Operation and function
2 Installation
2.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note:
Strong electromagnetic elds can impair the function of the controller.
ÎMake sure the controller as well as the system are not exposed to
strong electromagnetic elds.
The unit must only be located in dry interior rooms.
The controller must additionally be supplied from a double pole switch with con-
tact gap of at least 3 mm.
Please pay attention to separate routing of sensor cables and mains cables.
In order to mount the device to the wall, carry out the following steps:
ÎUnscrew the crosshead screw from the cover and remove it along with the
cover from the housing.
ÎMark the upper fastening point on the wall. Drill and fasten the enclosed wall
plug and screw leaving the head protruding.
ÎHang the housing from the upper fastening point and mark the lower fastening
points (centres 150mm).
ÎInsert lower wall plugs.
ÎFasten the housing to the wall with the lower fastening screw and tighten.
ÎCarry out the electrical wiring in accordance with the terminal allocation (see
chap. 2.2).
ÎPut the cover on the housing.
ÎAttach with the fastening screw.
cover
screw
2.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic
components!
ÎTake care to discharge properly before touching the
inside of the device! To do so, touch a grounded sur-
face such as a radiator or tap!
Note:
Connecting the device to the power supply must always be the last step
of the installation!
Note:
The pump speed must be set to 100% when auxiliary relays or valves are
connected.
The controller is supplied with power via a mains cable.The power supply of the
device must be 100… 240 V~ (50 … 60 Hz).
The controller is equipped with 4 relays in total to which loads such as pumps,
valves, etc. can be connected:
• Relays 1 … 3 are semiconductor relays, designed for pump speed control.
Conductor R1 … R3
Neutral conductor N
Protective conductor ⏚
• Relay 4 is an electromechanical relay
Conductor R4
Neutral conductor N
Protective conductor ⏚

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Installation Indications, functions and options MessagesCommissioningOperation and function
Depending on the product version, mains cables and sensor cables are already
connected to the device. If that is not the case, please proceed as follows:
Connect the temperature sensors (S1 to S5) to the corresponding terminals
with either polarity:
S1 = Sensor 1 (collector sensor )
S2 = Sensor 2 (store sensor base)
S3 = Sensor 3 (e. g. store sensor top)
S4 = Sensor 4 (e. g. store sensor store 2)
S5 = Sensor 5 (e. g. sensor collector 2)
Connect the Grundfos Direct Sensors™ to the inputs marked VFS and RPS.
AV40 owmeter can be connected to the terminals V40 and GND (either po-
larity).
The terminals marked PWM are control outputs for high-efciency pumps (PWM1
is allocated to R1, PWM2 is allocated to R2).
R1-R3
R4
R4
VBus
VBus GND
V40 PWM 2 PWM 1
S5
S4 S3
GND N
VFS
DeltaSol® BX
Made in Germany
RPS
Temp. Sensor
Pt1000
S2 S1
R3 R2 R1
L'L
IP 20
1 (1) A (100 ... 240)V~
2 (1) A (100 ... 240)V~
100 ... 240 V~
T4A
50-60 Hz
The mains connection is at the terminals:
Neutral conductor N
Conductor L
Conductor L' (L' is not connected with the mains cable. L' is a fused contact
permanently carrying voltage.)
Protective conductor ⏚
Note:
For further information about heat quantity measurement with Grund-
fos Direct Sensors™ see page 64.
Note:
The connection depends on the system layout selected (see page 7).
Note:
For more details about the commissioning procedure see page 39.
2.3 Data communication / Bus
The controller is equipped with a RESOL VBus®for data transfer and energy
supply to external modules.The connection is to be carried out at the terminals
marked VBus (either polarity).
One or more RESOLVBus®modules can be connected via this data bus, such as:
• RESOL GA3 Large Display module / SD3 Smart Display
• RESOL AM1 Alarm Module
• RESOL DL2 Datalogger
• RESOL DL3 Datalogger
Furthermore, the controller can be connected to a PC or integrated into a net-
work via the RESOL VBus®/USB or VBus®/LAN interface adapter (not includ-
ed). Different solutions for visualisation and remote parameterisation are available
on the RESOL website www.resol.com.
Note:
More accessories on page 72.
2.4 SD memory card slot
The controller is equipped with an SD card slot.
With an SD card, the following functions can be carried out:
• Store measurement and balance values onto the SD
card.After the transfer to a computer, the values can be
opened and visualised, e. g. in a spreadsheet.
Note:
For more information about using an SD card, see page 66.

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
2.5 System overview
1
Solar system with 1 store (page 9)
5
Solar system with 2 stores and valve logic
(page 13)
9
Solar system with 1 store and return
preheating (page 17)
13
Solar system with store loading in layers
and solid fuel boiler (page 21)
2
Solar system with 2 stores and heat
exchange (page 10)
6
Solar system with 2 stores and pump
logic (page 14)
10
Solar system with 1 store, return pre-
heating and backup heating (page 18)
14
Solar system with store loading in layers
and return preheating (page 22)
3
Solar system with 1 store and backup
heating (page 11)
7
Solar system with east-/west collectors
(page 15)
11
Solar system with store loading in layers
and heat exchange (page 19)
16
Solar system with store loading in layers
and heat exchange (page 24)
15
Solar system with store loading in layers,
return preheating and backup heating
(page 23)
4
Solar system with 1 store and 3-port valve
for store loading in layers (page 11)
8
Solar system with 1 store and solid fuel
boiler (page 16)
12
Solar system with store loading in layers
and backup heating (page 20)

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Installation Indications, functions and options MessagesCommissioningOperation and function
18
Solar system with east-/west collectors,
2 stores, pump logic and heat exchange
(page 26)
23
Solar system with with east-/west collec-
tors, 2 stores and valve logic (page 31)
25
Solar system with east-/west collectors
and backup heating (page 33)
19
Solar system with east-/west collectors
and backup heating (page 27)
26
Solar system with east-/west collectors
and solid fuel boiler (page 34)
20
Solar system with east-/west collectors,
return preheating and backup heating
(page 28)
21
Solar system with east-/west collectors
and return preheating (page 29)
22
Solar system with east-/west collectors
and store loading in layers (page 30)
24
Solar system with east-/west collectors
and heat exchange (page 32)
17
Solar system with 2 stores, valve logic
and heat exchange (page 25)

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
2.6 Systems
System 1: Standard solar system with 1 store
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, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Free 3 / GND
S4 Free 4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Free R3 / N / PE
R4 Free R4 / R4
S2
R1
S1
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS

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Installation Indications, functions and options MessagesCommissioningOperation and function
System 2: Solar system with 1 store and heat exchange
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
Heat exchange control to an existent store via an additional pump (R2)
can be carried out with another temperature differential function (S3 heat
source / S4 heat sink).
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature heat
exchange source
3 / GND
S4 Temperature heat
exchange sink
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Store loading pump R2 / N / PE
R3 Free R3 / N / PE
R4 Free R4 / N / PE
R2
R1
S3
S2
S1
S4
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 3: Solar system with 1 store and backup heating
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, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
Backup heating (R4) can be carried out with a thermostat function (S3). If the
value at S3 reaches the switch-on temperature for the backup heating, the relay
is switched on. If the value exceeds the switch-off temperature for the backup
heating, the relay is switched off again.
R1
S2
S1
R4
S3
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature backup
heating
3 / GND
S4 Free 4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Free R3 / N / PE
R4 Backup heating / Store
loading pump
R4 / N / PE

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12
Installation Indications, functions and options MessagesCommissioningOperation and function
System 4: Solar system with 1 store and store loading in layers
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S3. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1) will be activated and
the corresponding store zone will be loaded up to the adjusted store maximum
or set temperature respectively via the valve (R3).The priority logic effects prior
loading of the upper zone of the store.
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store top 3 / GND
S4 Free 4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Solar valve R3 / N / PE
R4 Free R4 / N / PE
R3
R1 S3
S2
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Flow direction when
normally open

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13
InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 5: 2-store solar system with valve logic
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S4. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1) will be activated and
the corresponding store will be loaded up to the adjusted store maximum or set
temperature respectively via the valve (R3).The priority logic effects prior loading
of store 1.
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store 1
base
2 / GND
S3 Free 3 / GND
S4 Temperature store 2
base
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Solar valve R3 / N / PE
R4 Free R4 / N / PE
R3
R1
S4S2S2
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Flow direction when
normally open

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14
Installation Indications, functions and options MessagesCommissioningOperation and function
System 6: 2-store solar system with pump logic
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S4. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1 and/or R2) will be
activated and the corresponding store will be loaded up to the adjusted store
maximum or set temperature respectively at most.The priority logic effects prior
loading of store 1.
R2R1
S4
S2
S1
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store 1
base
2 / GND
S3 Free 3 / GND
S4 Temperature store 2
base
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump store 1 R1 / N / PE
R2 Solar pump store 2 R2 / N / PE
R3 Free R3 / N / PE
R4 Free R4 / R4

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 7: Solar system with east- / west collectors
The controller compares the temperatures at the collector sensors S1 and S5 to
the store temperature at sensor S2. If one of the measured temperature difference
is higher than the adusted switch-on temperature difference, the corresponding
pump (R1 and/or R2) will be switched on, thus loading the store until either the
switch-off temperature difference or the store maximum temperature is reached.
R2R1
S2
S1 S5
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Sensors
S1 Temperature collector 1 1 / GND
S2 Temperature store base 2 / GND
S3 Free 3 / GND
S4 Free 4 / GND
S5
Temperature collector 2 5 / GND
Relay
R1 Solar pump collector 1 R1 / N / PE
R2
Solar pump collector 2 R2 / N / PE
R3 Free R3 / N / PE
R4 Free R4 / R4

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Installation Indications, functions and options MessagesCommissioningOperation and function
System 8: Solar system with 1 store and backup heating with solid fuel boiler
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, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
With another temperature differential function (S4 heat source/ S3 heat sink),
backup heating of the store with a solid fuel boiler can be carried out via another
pump (R3).
R3
R1
S4
S3
S2
S1
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store top 3 / GND
S4 Temperature solid fuel
boiler
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Loading pump
Solid fuel boiler
R3 / N / PE
R4 Free R4 / N / PE

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 9: Solar system with 1 store and return preheating
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, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
With another temperature differential function (S3 heat source/ S4 heat sink) re-
turn preheating (heating circuit backup) is possible via another valve (R2).
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store
return preheating
3 / GND
S4 Temperature heating
return
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Valve
return preheating
R2 / N / PE
R3 Free R3 / N / PE
R4 Free R4 / N / PE
R2
R1
S4
S3
S2
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Flow direction when
normally open

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Installation Indications, functions and options MessagesCommissioningOperation and function
System 10: Solar system with 1 store, return preheating and thermostatic backup heating
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, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
Backup heating (R4) can be carried out with a thermostat function (S3). If the
value at S3 reaches the switch-on temperature for the backup heating, the relay
is switched on. If the value exceeds the switch-off temperature for the backup
heating, the relay is switched off again.
With another temperature differential function (S3 heat source/ S4 heat sink) re-
turn preheating (heating circuit backup) is possible via another valve (R2).
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store
return preheating /
Temperature backup
heating
3 / GND
S4 Temperature heating
return
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Valve return
preheating
R2 / N / PE
R3 Free R3 / N / PE
R4 Backup heating / Store
loading pump
R4 / N / PE
S4
R4
R2
R1
S3
S2
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
out in
VFS
RPS
Flow direction when
normally open

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InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 11: Solar system with store loading in layers and heat exchange control
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S3. If the measured temperature differences are higher than the
adjusted switch-on temperature differences,the pump (R1) will be activated and the
corresponding store zone will be loaded up to the adjusted store maximum or set
temperature respectively via the valve (R3).The priority logic effects prior loading
of the upper zone of the store.
Heat exchange control to an existent store via an additional pump (R2) can be carried
out with another temperature differential function (S3 heat source/ S4 heat sink)
.
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store
top / Temperature heat
exchange source
3 / GND
S4 Temperature heat
exchange sink
4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Store loading pump R2 / N / PE
R3 Solar valve R3 / N / PE
R4 Free R4 / N / PE
S4
R2
R3
S3
R1
S2
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Flow direction when
normally open

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Installation Indications, functions and options MessagesCommissioningOperation and function
System 12: Solar system with store loading in layers and thermostatic backup heating
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S3. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1) will be activated and
the corresponding store zone will be loaded up to the adjusted store maximum
or set temperature respectively via the valve (R3).The priority logic effects prior
loading of the upper zone of the store.
Backup heating (R4) can be carried out with a thermostat function (S3). If the
value at S3 reaches the switch-on temperature for the backup heating, the relay
is switched on. If the value exceeds the switch-off temperature for the backup
heating, the relay is switched off again.
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store
return preheating /
Temperature backup
heating
3 / GND
S4 Free 4 / GND
S5 Free 5 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Free R2 / N / PE
R3 Solar valve R3 / N / PE
R4 Backup heating / Store
loading pump
R4 / N / PE
R4
R3
R1
S2
S3
S1
Durchflussrichtung
im stromlosen Zustand
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
VBus GND
L'
VFS
RPS
Flow direction when
normally open