Apricus DeltaSol AL E HE User manual

*11211754* 11211754
Thank you for buying this product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual safe.
DeltaSol®AL E HE
Solar controller for standard solar systems
with electric backup heating
Manual for the
specialised craftsman
Installation
Operation
Functions and options
Troubleshooting
Manual
en
beginning with version 2.00
The Internet portal for easy and secure access
to your system data – www.vbus.net

2
en
© 20160919_11211754_Apricus_DeltaSol_AL_E_HE.monen.indd
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 environ-
mentally sound disposal of the devices.
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 use in standard solar thermal systems with
electric backup heating (electric immersion heater) in compliance with the techni-
cal data specied in this manual.
Improper use excludes all liability claims.
CE-Declaration of conformity
The product complies with the relevant directives and is therefore la-
belled with the CE mark. The Declaration of Conformity is available
upon request, please contact the manufacturer.
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.
Subject to technical change. Errors excepted.

3
en
Solar controller for standard solar systems with electric backup heating
The DeltaSol®AL E HE controller is especially designed for standard solar sys-
tems with a high-efciency pump and an electric backup heating.
It is equipped with a PWM output and two high-current relays to which an electric
immersion heater of up to 3 kW (230 V~) can be connected.The heater can be
directly connected to the controller without the need of auxiliary relays.
For data communication, the controller has aVBus®.
Contents
1 Overview ...............................................................................................4
2 Installation ............................................................................................5
2.1 Mounting .........................................................................................................................5
2.2 Electrical connection ....................................................................................................6
2.3 Grundfos Direct SensorTM...........................................................................................7
2.4 PWM interface...............................................................................................................7
2.5 Data communication/Bus ...........................................................................................7
2.6 Terminal allocation with cable link ............................................................................8
2.7 Terminal allocation without cable link......................................................................9
3 Operation and function .....................................................................10
3.1 Buttons ......................................................................................................................... 10
3.2 System-Monitoring-Display ...................................................................................... 10
3.3 Slide switch .................................................................................................................. 12
3.4 Flashing codes ............................................................................................................. 12
3.5 Shortcuts for backup heating off, rapid heat-up and holiday mode ................ 12
4 Commissioning...................................................................................13
5 Control parameters and display channels .......................................15
5.1 Channel overview ...................................................................................................... 15
6 Channel overview ...............................................................................17
6.1 Display channels.......................................................................................................... 17
6.2 Adjustment channels ................................................................................................. 20
7 RCTT Remote control (accessory) ..................................................33
8 Troubleshooting..................................................................................34
9 Accessories .........................................................................................37
9.1 Sensors ......................................................................................................................... 38
9.2 VBus®accessories ...................................................................................................... 38
10 Index ....................................................................................................39

4
en
1 Overview
• Direct connection of an electric immersion heater up to 3 kW (230V~)
• DHW heating with rapid heat-up and thermal disinfection
• Time and temperature control of the electric backup heating
• Solar backup heating suppression
• Heat quantity measurement via VFD Grundfos Direct SensorTM
• PWM output for the speed control of a high-efciency pump
• Quick access to the holiday and the manual modes
• Status display for a bidirectional HE pump
• Drainback option and tube collector function
• Commissioning menu
Technical data
Inputs: for 4 Pt1000 temperature sensors,thereof 1 x RCTT, 1 x Grundfos Direct
SensorTM VFD, 1 x PWM feedback
Outputs: 1 semiconductor relay, 2 high-current relays for electric immersion
heater, 1 PWM output
PWM frequency: 512 Hz
PWM voltage: 10V
Switching capacity:
1 (1) A 240V~ (semiconductor relay)
14 (3) A 240V~/24V⎓(potential-free high-current relay)
Power supply: 100…240V~ (50…60 Hz)
Supply connection: typeY attachment
Standby: 0.67 W
Temperature controls class: I
Energy efciency contribution: 1 %
Mode of operation: type 1.B.Y action
Rated impulse voltage: 2.5 kV
Data interface: VBus®
VBus®current supply: 35 mA
Functions: function control,operating hours counter, tube collector function, heat
quantity measurement, time-controlled thermostat function, DHW heating with
rapid heat-up, thermal disinfection, holiday mode and backup heating suppression
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication / Display: System-Monitoring-Display for visualisation, 16-segment
display, 7-segment display, 8 symbols for system states, background illumination and
operating control LED
Operation: 3 push buttons and 1 slide switch
Ingress protection: IP 20/EN 60529
Protection class: I
Ambient temperature: 0…40°C [32… 104 °F]
Pollution degree: 2
Dimensions: 144 x 208 x 43 mm
12.5
180
180
100 144
208
16.75
43.3
Upper fastening
Lower fastening

5
en
2 Installation
2.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note
Strong electromagnetic elds can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic elds.
The 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.
ÎUnscrew the crosshead screw from the cover and remove the cover.
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 180 mm).
ÎDrill and insert the lower wall plug.
ÎFasten the housing to the wall with the lower fastening screw and tighten.
ÎCarry out the electrical wiring in accordance with the terminal allocation (see
page 6).
ÎPut the cover on the housing.
ÎAttach with the fastening screws.
1
34
56
0Auto I
0Auto I0Auto I
0Auto I
0Auto I0Auto I
180mm
0
A
uto
I
0Au toI
0
A
uto
I
0Au toI
2
Electrical connection see page 6

6
en
2.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic com-
ponents!
ÎTake care to discharge properly before touching
the inside of the device!To do so, touch a grounded
surface such as a radiator or tap!
Note
Connecting the device to the power supply must always be the last step
of the installation!
Note
It must be possible to disconnect the device from the mains at any time.
ÎInstall the mains plug such that it is accessible at any time.
ÎIf this is not possible, install a switch that can be accessed.
Do not use the device if it is visibly damaged!
Attach exible cables to the housing with the enclosed strain relief and the cor-
responding screws.
The controller is supplied with power via a mains cable.The power supply of the
device must be 100…240V~ (50… 60 Hz).
sensor terminals
protective conductor
common terminal block
load terminals mains terminals
VBus®
12
S1 S2 S3 S4
3456
T2A
100 ... 240 V~
50-60 Hz
VBus
91011 12 13 14
DeltaSol®AL E HE 1 (1) A (100 ... 240) V~
14 (3) A (100 ... 240) V~
R1
R2
IP 20
78
PWM
PFB
LEDN
N
N
17 18 19
1615
R2-N R2-N
LL
20 21
R2-L R2-L R1
22 23 24 25 26 27
VFD
The controller is equipped with 1 semiconductor relay to which a load such as
a pump, a valve, etc. can be connected:
17 Protective conductor ⏚
18 Neutral conductor N
19 Conductor R1
The controller is equipped with 2 high-current relays for connecting an electric
immersion heater of up to 3 kW:
16 Protective conductor ⏚
23 Mains conductor
22 Conductor electric immersion heater
21 Neutral conductor mains
20 Neutral conductor electric immersion heater
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:
1/2 Sensor 1 (collector sensor)
3/4 Sensor 2 (store sensor base)
5/6 Sensor 3 (store sensor top)
7/8 Sensor 4 (return sensor)
terminal for a
Grundfos Direct SensorTM
RCTT terminals
PWM terminals

7
en
Connect the RCTT Remote control (accessory) to the following terminals:
7 GND RCTT Remote control
8 Switching input RCTT Remote control
9 Signal LED output RCTT Remote control
Connect the VBus®to the terminals markedVBus with either polarity:
13 VBus terminal
14 VBus terminal
The mains connection is at the following terminals:
25 Neutral conductor N
27 Conductor L
15 Protective conductor ⏚
The controller comes with the following cable links pre-connected:
24 Link from the neutral conductor to terminal 21
26 Link from the conductor L to terminal 23
2.3 Grundfos Direct SensorTM
The controller is equipped with 1 input for a digitalVFD Grundfos Direct Sensor™
for measuring the ow rate and the temperature. Connection is made at the VFD
terminal (bottom left).
2.4 PWM interface
Speed control of a HE pump is possible via a PWM signal.The pump has to be
connected to the relay as well as to the PWM output of the controller. Power is
supplied to the HE pump by switching the corresponding relay on or off.
The terminal marked PFB is an interface for a bidirectional HE pump.
10 PWM output, control signal
11 PWM, GND
12 PWM input, feedback signal
2.5 Data communication / Bus
The controller is equipped with the VBus®for data transfer and energy supply to
external modules. The connection is to be carried out at the terminals marked
VBus (any polarity). One or more VBus®modules can be connected via this data
bus, such as:
• SD3Smart Display /GA3 Large Display
• DL2/ DL3 Datalogger
• KM1 Communication modules
Furthermore, the controller can be connected to a PC or integrated into a net-
work via theVBus®/USB or VBus®/LAN interface adapter (not included).
Note
More accessories on page 37.

8
en
2.6 Terminal allocation with cable link
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by
relay 1, and the store will be loaded until the switch-off temperature difference
(DT F) or the maximum store temperature (S MX) is reached.
Sensor S3 is used for a thermostat function, which operates relay 2 for backup
heating purposes, when the adjusted thermostat switch-on temperature (BH O)
is reached.This function can optionally be combined with up to 3 adjustable time
frames.
Sensor S3 can optionally be used as the reference sensor for the thermal disinfec-
tion function (OTD) or the store emergency shutdown option (OSEM).
Sensor S4 can optionally be connected. For heat quantity measurement, S1 and S2,
S1 and VFD or VFD and S4 respectively can be used as ow and return sensors.
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note:
With this connection type, the immersion heater is supplied with power
directly from the mains connection.
Symbol Description
S1 Collector sensor
S2 Store sensor base
S3 Store sensor top
R1 Solar pump
R2-L Mains conductor
R2-L Conductor electric immersion heater
R2-N Neutral conductor mains
R2-N Neutral conductor electric immersion heater
⏚Protective conductor
L/N Mains terminals
12
S1 S2 S3 S4
3456
T2A
100 ... 240 V~
50-60 Hz
VBus
91011 12 13 14
DeltaSol®AL E HE 1 (1) A (100 ... 240)V~
14 (3) A (100 ... 240)V~
R1
R2
IP 20
78
PWM PFB
LEDN
N
N
17 18 19
1615
R2-N R2-N
LL
20 21
R2-L R2-L R1
22 23 24 25 26 27
VFD
S1
S2
S3R1
S4/ VFD VFD
100…240V~

9
en
2.7 Terminal allocation without cable link
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by
relay 1, and the store will be loaded until the switch-off temperature difference
(DT F) or the maximum store temperature (S MX) is reached.
Sensor S3 is used for a thermostat function, which operates relay 2 for backup
heating purposes, when the adjusted thermostat switch-on temperature (BH O)
is reached.This function can optionally be combined with up to 3 adjustable time
frames.
Sensor S3 can optionally be used as the reference sensor for the thermal disinfec-
tion function (OTD) or the store emergency shutdown option (OSEM).
Sensor S4 can optionally be connected. For heat quantity measurement, S1 and S2,
S1 and VFD or VFD and S4 respectively can be used as ow and return sensors.
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note:
With this connection type, the immersion heater is supplied with power
indirectly via the mains connection.
ÎRemove the pre-connected cable links.
Symbol Description
S1 Collector sensor
S2 Store sensor base
S3 Store sensor top
R1 Solar pump
R2-L Mains conductor
R2-L Conductor electric immersion heater
R2-N Neutral conductor mains
R2-N Neutral conductor electric immersion heater
⏚Protective conductor
L/N Mains terminals
12
S1 S2 S3 S4
3456
T2A
100 ... 240 V~
50-60 Hz
VBus
91011 12 13 14
DeltaSol®AL E HE 1 (1) A (100 ... 240)V~
14 (3) A (100 ... 240)V~
R1
R2
IP 20
78
PWM PFB
LEDN
N
N
17 18 19
1615
R2-N R2-N
LL
20 21
R2-L R2-L R1
22 23 24 25 26 27
VFD
S1
S2
S3R1
S4/ VFD VFD
100…240V~
100…240V~
max. 3 kW
max. 14 A

10
en
3 Operation and function
3.1 Buttons
The controller is operated via the 3 buttons next to the display:
Button : Activating the rapid heat-up function (press and hold down button for 3s)
: Scrolling upwards, increasing adjustment values (press button briey)
Button ⛁: Activating the holiday mode (press and hold down button for 3s)
: Ⓢ Conrming / selecting (press button briey)
Button : Scrolling downwards, reducing adjustment values
During normal operation, display channels will be displayed.
ÎIn order to scroll between display channels, press buttons and .
Access to adjustment channels
ÎUse button in order to scroll to the last display channel,then press and hold
down button for approx. 3s.
If an adjustment channel is shown on the screen, Ⓢwill be displayed on the
right-hand side next to the channel name.
ÎPress button in order to select an adjustment channel.
Ⓢ starts ashing.
ÎAdjust the desired value with buttons and .
ÎBriey press button .
Ⓢpermanently appears, the adjusted value has been saved.
3.2 System-Monitoring-Display
The System-Monitoring-Display consists of 3 blocks: channel display, tool bar
and system screen.
3.2.1 Channel display
The channel display consists of 2 lines.The upper display line is an alphanumeric
16-segment display. In this line, mainly channel names and menu items are displayed.
In the lower 7-segment display, values and parameters are displayed.

11
en
3.2.2 Tool bar
The additional symbols in the tool bar indicate the current system state.
Permanently
shown Flashing Status indications:
⓵Relay 1 active
⓶Relay 2 active
☼Maximum store temperature exceeded
⚠+ ☼Store emergency shutdown active
⚠Collector emergency shutdown active
⓵ ☼ Collector cooling active
⓵ ☼ System cooling active
⓵+ ☼Store cooling active
⓵+ ☼⚠Holiday cooling active
❄Collector minimum limitation active
❄Antifreeze function activated
⓵ ❄ Antifreeze function active
☛+ ⓵⚠Manual mode relay 1 ON
☛+ ⓶⚠Manual mode relay 2 ON
☛ ⚠ Manual mode relay 1 /2 OFF
☍ ⚠ Sensor fault
☍+ ⚠PWM feedback error message
3x ☛Rapid heat-up not possible, because switch-off tempera-
ture exceeded
3.2.3 System screen
The system scheme is indicated on the System-Monitoring-Display. It consists of
several system component symbols which are – depending on the current status of
the system – either ashing or permanently shown.
Collector
with collector sensor
Temperature sensor
Pump
Store
with heat exchanger
Electric backup heating
(electric immersion heater)

12
en
3.3 Slide switch
By means of the slide switch,the controller can be set to different operating modes:
• Backup heating off = ☼(left)
• Manual mode = ☛(right)
• Automatic =
(centre)
Slide switch
3.4 Flashing codes
3.4.1 System screen
• Pump symbols are ashing when the corresponding relay is on.
• Sensor symbols are ashing if the corresponding sensor display channel is
selected.
• Sensors symbols are ashing quickly in the case of a sensor fault.
3.4.2 Operating control LED
Green: everything OK
Green ashing: holiday mode / rapid heat-up active
Red/green ashing: initialisation / manual mode
Red ashing: sensor fault (sensor symbol is ashing quickly)
3.5 Shortcuts for backup heating off, rapid heat-up and holiday mode
Slide switch position left ☼
Backup heating off
There will be no backup heating or thermal disinfection.The upper heat exchanger
in the System-Monitoring-Display will not be indicated, S3 will not be needed.
Slide switch position right ☛
Manual mode
Manual mode with a shortcut to the MAN1/2 parameters.
Button (3 s)
Rapid heat-up
When button is pressed for 3s, rapid heat-up will become active for the time
adjusted in BOOS.The time will be indicated running backwards.
Button ⛁(3 s)
Holiday mode
If button ⛁is pressed and held down for approx. 3s, the adjustment channel
DAYS appears, allowing to enter the number of days for an absence. If the pa-
rameter is set to a value higher than 0, the holiday mode becomes active using
the adjustments that have previously been made in the holiday cooling menu.The
days will be counted backwards at 00:00. If the value is set to 0, the holiday mode
is deactivated.

13
en
4 Commissioning
scrolling downwards (-)
scrolling upwards (+)
Ⓢ(selection/ adjustment mode)
ÎConnect the device to the mains.
The controller runs an initialisation phase.
When the controller is commissioned or when it is reset, it will run a commission-
ing menu. The commissioning menu leads the user through the most important
adjustment channels needed for operating the system.
1. Language
ÎAdjust the desired menu language.
LANG
Language selection
Selection: dE, En, Fr, ES, It
Factory setting: En
2. Temperature unit
ÎAdjust the desired unit.
UNIT
Temperature unit
Selection: °F, °C
Factory setting: °C
3. Time
ÎAdjust the clock time.
First of all adjust the hours, then the minutes.
TIME
Real time clock
4. Maximum store temperature
ÎAdjust the desired maximum store temperature.
S MX
Maximum store temperature
Adjustment range: 4… 95 °C [40…200 °F]
Factory setting: 70 °C [160 °F]
Note:
The controller is also equipped with a non-ad-
justable emergency shutdown, deactivating
the system if the store reaches 95 °C [200 °F].
Commissioning
adjustment mode ashing
Operation
changing a value ashing
conrming a value not ashing
to the next
parameter

14
en
5. Pump control type
ÎAdjust the pump control type.
PUM
Pump control type
Selection: OnOF, PULS, PSOL, PHEA
Factory setting: PuLS
The following types can be selected: Adjustment for
standard pump without speed control
• OnOF (pump on/ pump off)
Adjustment for standard pump with speed control
• PULS (burst control via semiconductor relay)
Adjustment for high-efciency pump (HE pump)
• PSOL (PWM prole for a HE solar pump)
• PHEA (PWM prole for a HE heating pump)
6. Minimum speed
ÎAdjust the minimum speed for the corresponding
pump.
nMN
Minimum speed
Adjustment range: (10) 30… 100 %
Factory setting: 30 %
Note:
The pump speed must be set to 100% when
auxiliary relays or valves are connected.
7. Maximum speed
ÎAdjust the maximum speed for the corresponding
pump.
nMX
Maximum speed
Adjustment range: (10) 30… 100 %
Factory setting: 100 %
Note:
The pump speed must be set to 100% when
auxiliary relays or valves are connected.
8. PWM feedback signal
ÎAdjust the PWM feedback signal type.
PFB
PWM feedback signal
Selection: OFF, A, b
Factory setting: OFF
(A = Wilo pump, b = Grundfos pump)
Conrmation
Completing the commissioning menu
After the last channel of the commissioning menu has
been adjusted and conrmed, the controller asks for
conrmation of the adjustments.
ÎIn order to conrm the adjustments made in the
commissioning menu, press button .
Now the controller is ready for operation.
Note:
The adjustments carried out during commis-
sioning can be changed anytime in the cor-
responding adjustment channel. Additional
functions and options can also be activated or
deactivated (see page 20).
Commissioning

15
en
5 Control parameters and display channels
5.1 Channel overview
Display channels
Channel Description Connection terminal Page
INIT x* ODB initialisation active - 17
FLL x* ODB lling time active - 17
STAB x* ODB stabilisation in progress - 17
BOOS x* Rapid heat-up active - 17
DAYS x* Holiday mode active - 17
COL x Temperature collector S1 17
TST s Temperature store 1 base (backup heating off) S2 18
TSTB x Temperature store 1 base S2 18
TSTT x Temperature store 1 top S3 18
TDIS s* Thermal disinfection temperature
(thermal disinfection)
S3 18
S3 s Temperature store 1 top (backup heating off) S3 18
S4 x Temperature sensor 4 S4 18
TFL x* Temperature ow sensor S1/ S4 /VFD 18
TR x* Temperature return sensor S4/ VFD 18
VFD x* Temperature Grundfos Direct Sensor™ VFD 18
L/h x* Flow rate Grundfos Direct Sensor™/
PWM feedback signal
VFD/ PWM 18
n% x Speed R1 R1 18
h P1 x Operating hours R1 R1 20
h P2 x Operating hours R2 R2 20
kWh x* Heat quantity in kWh - 19
MWh x* Heat quantity in MWh - 19
CDIS s* Countdown of monitoring period
(thermal disinfection)
- 19
SDIS s* Starting time display (thermal disinfection) - 19
DDIS s* Disinfection period display (thermal disinfection) - 19
TIME x Time - 19
Adjustment channels
Channel Description Factory setting Page
DT O x Switch-on temperature difference R1 8.0 K [12.0°Ra] 20
DT F x Switch-off temperature difference R1 4.0 K [8.0°Ra] 20
DT S x Set temperature difference R1 10.0 K [20.0°Ra] 21
RIS x Rise R1 2K [4°Ra] 21
PUM x Pump control type R1 Puls 21
nMN x Minimum speed R1 30% 21
nMX x Maximum speed R1 100 % 22
PFB x* PWM feedback signal OFF 22
S MX x Maximum store temperature 70 °C [160 °F] 22
OSEM x Store emergency shutdown option OFF 23
EM x Collector emergency temperature 110°C [230 °F] 23
OCC x Collector cooling option OFF 23
CMX x* Maximum collector temperature 110°C [230 °F] 23
OSYC x System cooling option OFF 24
DTCO x* Switch-on temperature difference cooling 20.0 K [40.0°Ra] 24
DTCF x* Switch-off temperature difference cooling 15.0 K [30.0°Ra] 24
OSTC x Store cooling option OFF 24
OHOL x* Holiday cooling option OFF 24
THOL x* Holiday cooling temperature 40°C [110°F] 24
OCN x Collector minimum limitation option OFF 25
CMN x* Collector minimum temperature 10°C [50 °F] 25
OCF x Antifreeze option ON 25
CFR x* Antifreeze temperature 4.0°C [40.0 °F] 25
OTC x Tube collector option OFF 26
TCST x* OTC starting time 07:00 26
TCEN x* OTC ending time 19:00 26
TCRU x* OTC runtime 30 s 26
TCIN x* OTC standstill interval 30 min 26
GFD x Grundfos Direct Sensor™ OFF 26
SEN x* VFD allocation 2 27
FMAX x* Maximum ow rate 2.5 l/min 27
MEDT x Antifreeze type 0 28
MED% x* Antifreeze concentration 45% 28

16
en
Adjustment channels
Channel Description Factory setting Page
BHMN s Thermostat comfort temperature 55°C [110 °F] 28
BH O s Switch-on temperature for thermostat 60°C [110 °F] 28
BHF s Switch-off temperature for thermostat 65°C [150°F] 28
t1 O s Thermostat switch-on time 1 17:00 28
t1 F s Thermostat switch-off time 1 19:00 28
t2 O s Thermostat switch-on time 2 00:00 28
t2 F s Thermostat switch-off time 2 00:00 28
t3 O s Thermostat switch-on time 3 00:00 28
t3 F s Thermostat switch-off time 3 00:00 28
BOOS s Rapid heat-up runtime 120 min 29
ODB x Drainback option OFF 29
tDTO x* ODB switch-on condition - time period 60 s 30
tFLL x* ODB lling time 5.0 min 30
tSTB x* ODB stabilisation time 2.0 min 30
OTD s Thermal disinfection option ON 30
PDIS s* Monitoring period 07:00 30
DDIS s* Disinfection period 01:00 30
TDIS s* Disinfection temperature 60 °C [140 °F] 30
SDIS s* Starting time 00:00 31
MAN1 x Manual mode R1 Auto 31
MAN2 x Manual mode R2 Auto 31
LANG x Language En 32
UNIT x Temperature unit °C 32
RESE x Reset - back to factory settings 32
######## Version number
Symbol Description
x Channel is available
x* Channel is available, if the corresponding option is activated.
sSystem-specic channel
s* System-specic channel, only available if the corresponding option is activated

17
en
6 Channel overview
6.1 Display channels
Note:
The display and adjustment channels as well as the adjustment ranges de-
pend on the system selected, the functions and options as well as on the
system components connected to the controller.
Display of drainback time periods
Initialisation
INIT
ODB initialisation active
Indicates the time adjusted in tDTO, running backwards.
Filling time
FLL
ODB lling time active
Indicates the time adjusted in tFLL, running backwards.
Stabilisation
STAB
ODB stabilisation in progress
Indicates the time adjusted in tSTB, running backwards.
Indication of rapid heat-up and days of absence
Rapid heat-up
BOOS
Rapid heat-up active
Indicates the time adjusted in BOOS, running backwards.
Days of absence
DAYS
Holiday mode active
Indicates the days adjusted, running backwards.
In this channel, the days of absence can also be adjusted.
Display of collector temperature
COL
Collector temperature
Display range: -40… +260 °C [-40 … +500 °F]
Indicates the collector temperature.

18
en
Display of store temperatures
TST,TSTB,TSTT,TDIS
Store temperatures
Display range: -40… +260 °C [-40 … +500 °F]
Indicates the store temperatures.
• TST : Store temperature (backup heating off)
• TSTB : Store temperature base
• TSTT : Store temperature top
• TDIS : Thermal disinfection temperature
(replaces TSTT if, during thermal disinfection, the disinfection period DDIS is
active)
Display of sensors 3, 4 and VFD
S3, S4,VFD
Sensor temperatures
Display range: -40… +260 °C [-40 … +500 °F]
VFD: 0… 100°C [32…212°F]
Indicates the current temperature at the corresponding additional sensor (without
control function).
• S3 : Temperature at sensor 3 (backup heating off)
• S4 : Temperature at sensor 4
• VFD : Grundfos Direct Sensor™
Note:
S3 and S4 will only be indicated if the temperature sensors are connected
to the corresponding terminals. VFD will be indicated only if a Grundfos
Direct Sensor™ has been connected and registered.
Display of further temperatures
TFL,TR
Further measured temperatures
Display range: -40… +260 °C [-40 … +500 °F]
Indicates the current temperature at the corresponding sensor.
• TFL : Temperature ow
• TR : Temperature return
Indication of the ow rate
L/h
Flow rate/ PWM feedback signal
Display range: depending on the sensor type used and the PWM feedback signal
selected respectively
Indicates the current ow rate at the VFD ow rate sensor or of the bidirectional
pump and its error messages respectively.
The display range depends on the sensor type selected.
Indication of current pump speed
n %
Current pump speed
Display range: 10 … 100%
Indicates the current pump speed.

19
en
Display of heat quantity
kWh/MWh
Heat quantity in kWh/ MWh
Display channel
Indicates the heat quantity produced in the system.
The heat quantity measurement can be carried out in 3 different ways (see page
27): with a xed ow rate value, with a VFD Grundfos Direct Sensor™ or with
a PWM feedback signal. 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 zero.As soon as one of the dis-
play channels of the heat quantity is selected, the symbol Ⓢis displayed.
ÎIn order to access the reset mode of the counter, press button for approx.
2s.
Ⓢ starts ashing and the heat quantity value will be set back to zero.
ÎIn order to nish the reset, press button .
In order to interrupt the reset process, do not press any button for about 5s.The
display returns to the display mode.
Indication of thermal disinfection
CDIS
Countdown of the
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 time is displayed as CDIS (in hours and minutes),
counting backwards.
SDIS
Display of starting time
Display range: 00:00… 24:00 (hh:mm)
If the thermal disinfection option (OTD) is activated and a starting delay time has
been adjusted, the adjusted starting time is displayed as SDIS (ashing).
DDIS
Display of disinfection period
Display range: 00:00… 24:00 (hh:mm)
If the thermal disinfection option (OTD) is activated and the disinfection period
is in progress, the remaining time is displayed as CDIS (in hours and minutes),
counting backwards.
Display of time
TIME
Indicates the current clock time.
ÎIn order to adjust the hours, press button for approx. 2 s.
ÎSet the hours by pressing buttons and .
ÎIn order to adjust the minutes, press button .
ÎSet the minutes by pressing buttons and .
ÎIn order to save the adjustments, press button .

20
en
Operating hours counter
h P / h P1 / h P2
Operating hours counter
Display channel
The operating hours counter accumulates the operating hours of the correspond-
ing relays (h P / h P1 / h P2). Only full hours are displayed.
The accumulated operating hours can be set back to zero.As soon as an operating
hours channel is selected, the symbol Ⓢis displayed.
ÎIn order to access the reset mode of the counter, press button for approx.
2s.
Ⓢ starts ashing and the operating hours value will be set back to zero.
ÎIn order to nish the reset, press button .
In order to interrupt the reset process, do not press any button for about 5s.The
display returns to the display mode.
6.2 Adjustment channels
∆T control
DT O
Switch-on temperature difference
Adjustment range: 1.0… 20.0 K [2.0 …40.0°Ra]
Factory setting: 8.0 K [12.0 °Ra]
The controller works as a standard differential controller.If the temperature reach-
es or exceeds the switch-on temperature difference, the pump switches on.
When the temperature difference reaches or falls below the adjusted switch-off
temperature difference, the respective relay switches off.
Note:
The switch-on temperature difference must be at least 0.5K [1 °Ra] high-
er than the switch-off temperature difference.
DT F
Switch-off temperature difference
Adjustment range: 0.5… 19.5 K [1.0 …39.0°Ra]
Factory setting: 4.0 K [8.0 °Ra]
Note:
If the drainback option ODB is activated, the values of the parameters
DT O, DT F and DT S will be adapted to values suiting drainback sys-
tems:
DTO = 10 K [20 °Ra]
DT F = 4 K [8 °Ra]
DTS = 15 K [30 °Ra]
Adjustments that have been previously made in these channels will be
overridden and have to be entered again if ODB is deactivated later on.