Resol DeltaSol AL EHE User Manual

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DeltaSol

Solar controller for standard solar systems with electric backup heating

Manual for the specialised craftsman

Installation Operation Functions and options Troubleshooting

AL E HE

beginning with version 2.01

*11210343*

11210343

The Internet portal for easy and secure access to your system data – www.vbus.net

Thank you for buying this RESOL product. Please read this manual carefully to get the best performance from this unit.

Please keep this manual safe.

Manual

www.resol.com

Safety advice

Please pay attention to the following safety advice in order to avoid danger and damage to people and property.

Danger of electric shock:

• When carrying out works, the device must rst of all be disconnected from the mains.

• It must be possible to disconnect the device from the mains at any time.

• Do not use the device if it is visibly damaged.

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.

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 the manufacturer.

Note

Strong electromagnetic elds can impair the function of the controller.

Î Make 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 are allowed to carry out electrical works.

Initial commissioning must be effected by authorised skilled personnel.

Description of symbols

WARNING!

Warnings are indicated with a warning triangle!

Î They 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.

Î Arrows indicate instruction steps that should be carried out.

Disposal

• Dispose of the packaging in an environmentally sound manner.

• At the end of its working life, the product must not be disposed of as urban waste. Old appliances must be disposed of by an authorised body 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.

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 a VBus

Contents

1 Overview ...............................................................................................4

2 Installation ............................................................................................5

2.1 Mounting .........................................................................................................................5

2.2 Electrical connection ....................................................................................................6

2.3 Grundfos Direct Sensor

...........................................................................................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

1 Overview

• Direct connection of an electric immersion heater up to 3 kW (230 V~)

• 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 Sensor

• 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

Dimensions and minimum distances

180

208

Lower fastening

Upper fastening

12.5

Technical data

Inputs: for 4 Pt1000 temperature sensors, thereof 1 x RCTT, 1 x Grundfos Direct

Sensor

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: 10 V Switching capacity:

1 (1) A 240 V~ (semiconductor relay) 14 (3) A 240 V~ / 24 V⎓ (potential-free high-current relay)

Power supply: 100 … 240 V~ (50 … 60 Hz) Supply connection: type X attachment Standby: 0.67 W Temperature controls class: I

Energy efciency contribution: 1 %

Mode of operation: type 1.B.Y action

16.75

Rated impulse voltage: 2.5 kV Data interface: VBus VBus® current supply: 35 mA

100

144

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

43.3

Protection class: I Ambient temperature: 0 … 40 °C [32 … 104 °F] Pollution degree: 2 Dimensions: 144 x 208 x 43 mm

2 Installation

0 Auto I

2.1 Mounting

WARNING!

The unit must only be located in dry interior rooms. If the device is not equipped with a mains connection cable and a plug, the device

must additionally be supplied from a double pole switch with contact gap of at least 3 mm.

Please pay attention to separate routing of sensor cables and mains cables.

Î Unscrew the crosshead screw from the cover and remove the cover. Î Mark the upper fastening point on the wall. Drill and fasten the enclosed wall

plug and screw leaving the head protruding.

Î Hang the housing from the upper fastening point and mark the lower fastening

points (centres 180 mm).

Î Drill and insert the lower wall plug. Î Fasten the housing to the wall with the lower fastening screw and tighten. Î Carry out the electrical wiring in accordance with the terminal allocation (see

page 6).

Î Put the cover on the housing. Î Attach with the fastening screws.

Electric shock!

Upon opening the housing, live parts are exposed!

Î Always disconnect the device from power supply

before opening the housing!

Note

Strong electromagnetic elds can impair the function of the device.

Î Make sure the device as well as the system are not exposed to strong

electromagnetic elds.

0 Auto I

0 Auto I0 Auto I

0 Auto

180mm

0 Auto

0 Auto I

0 Auto I0 Auto I

Electrical connection see page 6

2.2 Electrical connection

WARNING!

Electric shock!

Upon opening the housing, live parts are exposed!

Î Always disconnect the device from power supply

before opening the housing!

ATTENTION!

ESD damage!

Electrostatic discharge can lead to damage to electronic components!

Î Take 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.

Î Install the mains plug such that it is accessible at any time. Î If this is not possible, install a switch that can be accessed.

If the mains cable is damaged, it must be replaced by a special connection cable which is available from the manufacturer or its customer service.

Do not use the device if it is visibly damaged!

Attach exible cables to the housing with the enclosed strain relief and the corresponding screws.

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 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)

DeltaSol® AL E HE

Made in Germany

VFD

terminal for a

3456

sensor terminals

Grundfos Direct Sensor

IP 20

LED

9101112

RCTT terminals

PWM

PFB

PWM terminals

VBus

13 14

VBus

protective conductor common terminal block

1 (1) A (100 ... 240) V~

R1 R2

14 (3) A (100 ... 240) V~

1615

R2-N

20 21

R2-N

22 23

R2-L

load terminals

T2A

100 ... 240 V~

50-60 Hz

R2-L

24 25 26 27

mains terminals

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 marked VBus 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 Sensor

The controller is equipped with 1 input for a digital VFD 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

brown

101112

VBus

PFB

13 14

1615

blue

brown

blue

green/yellow

black (optional)

230 V~ power

PWM signal cable

supply

pump power supplypump signal input

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:

• SD3 smart Display / GA3 Large Display

• DL2 / DL3 Datalogger

• KM2 Communication module

Furthermore, the controller can be connected to a PC or integrated into a network via the VBus

/USB or VBus® /LAN interface adapter (not included). Different solutions for visualisation and remote parameterisation are available on the website www.resol.com.

Note

More accessories on page 37.

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.

1 (1) A (100 ... 240) V~

DeltaSol® AL E HE

Made in Germany

VFD

3456

IP 20

LED

PWM

PFB

9101112

VBus

13 14

R1 R2

14 (3) A (100 ... 240) V~

1615

R2-N

20 21

T2A

100 ... 240 V~

50-60 Hz

R2-L

R2-N

22 23

24 25 26 27

S3R1

S4 / VFD

VFD

100 … 240 V~

Sensor S3 can optionally be used as the reference sensor for the thermal disinfection 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!

Î Always 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

⏚

L/N Mains terminals

Protective conductor

2.7 Terminal allocation without cable link

1 (1) A (100 ... 240) V~

VFD

S4 / VFD

Made in Germany

DeltaSol® AL E HE

3456

R1 R2

IP 20

LED

PWM

PFB

9101112

VBus

13 14

14 (3) A (100 ... 240) V~

1615

R2-N

20 21

S3R1

VFD

T2A

100 ... 240 V~

50-60 Hz

R2-L

R2-N

22 23

24 25 26 27

100 … 240 V~

100 … 240 V~ max. 3 kW max. 14 A

Sensor S3 can optionally be used as the reference sensor for the thermal disinfection 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!

Î Always 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.

Î Remove 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

⏚

L/N Mains terminals

Protective conductor

3 Operation and function

3.1 Buttons

The controller is operated via the 3 buttons next to the display:

Activating the rapid heat-up function (press and hold down button for 3 s)

Button

Button  :

During normal operation, display channels will be displayed.

Access to adjustment channels

If an adjustment channel is shown on the screen, Ⓢ will be displayed on the right-hand side next to the channel name.

Ⓢ starts ashing.

Ⓢ permanently appears, the adjusted value has been saved.

Scrolling upwards, increasing adjustment values (press button briey)

 :

⛁

Activating the holiday mode (press and hold down button for 3 s)

Ⓢ Conrming / selecting (press button briey)

 :

Scrolling downwards, reducing adjustment values

Î In order to scroll between display channels, press buttons  and .

Î Use button  in order to scroll to the last display channel, then press and hold

down button  for approx. 3 s.

Î Press button in order to select an adjustment channel.

Î Adjust the desired value with buttons  and . Î Briey press button .

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.

3.2.2 Tool bar

The additional symbols in the tool bar indicate the current system state.

Permanently

shown

⓵ ⓶ ☼

⓵ ☼

⓵ ☼ ⓵ + ☼ ⓵ + ☼

❄

⓵ ❄

☛ + ⓵ ☛ + ⓶

☛ ⚠

☍ ⚠

Flashing Status indications:

Relay 1 active

Relay 2 active

Maximum store temperature exceeded

⚠ + ☼

⚠

⚠ ❄

⚠ ⚠

☍ + ⚠

3 x ☛

Store emergency shutdown active

Collector emergency shutdown active

Collector cooling active

System cooling active

Store cooling active

Holiday cooling active

Collector minimum limitation active

Antifreeze function activated

Antifreeze function active

Manual mode relay 1 ON

Manual mode relay 2 ON

Manual mode relay 1 / 2 OFF

Sensor fault

PWM feedback error message

Rapid heat-up not possible, because switch-off temperature 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

Temperature sensor

with collector sensor

Pump

Store

with heat exchanger

Electric backup heating

(electric immersion heater)

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 =

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)

(centre)

Slide switch

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

Rapid heat-up When button

adjusted in BOOS. The time will be indicated running backwards.

Button ⛁ (3 s)

Holiday mode If button ⛁ is pressed and held down for approx. 3 s, the adjustment channel

DAY S appears, allowing to enter the number of days for an absence. If the parameter 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.

(3 s)

is pressed for 3s, rapid heat-up will become active for the time

4 Commissioning

Commissioning

scrolling upwards (+)

Ⓢ (selection / adjustment mode)

scrolling downwards (-)

Î Connect 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.

Operation

adjustment mode ashing

changing a value ashing

conrming a value not ashing

to the next

parameter

1. Language

Î Adjust the desired menu language.

LANG

Language selection Selection: dE, En, Fr, ES, It Factory setting: dE

2. Temperature unit

Î Adjust the desired unit.

UNIT

Temperature unit Selection: °F, °C Factory setting: °C

3. Time

Î Adjust the clock time.

First of all adjust the hours, then the minutes.

TIME

Real time clock

4. Maximum store temperature

Î Adjust the desired maximum store temperature.

S MX

Maximum store temperature Adjustment range: 4 … 95 °C [40 … 200 °F] Factory setting: 60 °C [140 °F]

Note:

The controller is also equipped with a non-adjustable emergency shutdown, deactivating the system if the store reaches 95 °C [200 °F].

Commissioning

5. Pump control type

Î Adjust the pump control type.

PUM

Pump control type Selection: OnOF, PULS, PSOL, PHEA Factory setting: PSOL 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

Î Adjust 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

Î Adjust 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

Î Adjust 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.

Î In 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 commissioning can be changed anytime in the corresponding adjustment channel. Additional functions and options can also be activated or deactivated (see page 20).

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 DAY S 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 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 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) SDIS s* Starting time display (thermal disinfection) - 19 DDIS s* Disinfection period display (thermal disinfection) - 19 TIME x Time - 19

S3 18

VFD / PWM 18

- 19

Adjustment channels Channel Description Factory setting Page DT O x Switch-on temperature difference R1 6.0 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 2 K [4 °Ra] 21

PUM x Pump control type R1 PSOL 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 60 °C [140 °F] 22 OSEM x Store emergency shutdown option OFF 23 EM x Collector emergency temperature 130 °C [270 °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 OFF 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 6.0 l/min 27 MEDT x Antifreeze type 1 28 MED% x* Antifreeze concentration 40 % 28

Adjustment channels Channel Description Factory setting Page BHMN s Thermostat comfort temperature 40 °C [110 °F] 28 BH O s Switch-on temperature for thermostat 40 °C [110 °F] 28 BH F s Switch-off temperature for thermostat 45 °C [120 °F] 28 t1 O s Thermostat switch-on time 1 00:00 28 t1 F s Thermostat switch-off time 1 00:00 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 90 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 OFF 30

PDIS s* Monitoring period 01:00 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 On 31 MAN2 x Manual mode R2 OFF 31 LANG x Language dE 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.

s System-specic channel

s* System-specic channel, only available if the corresponding option is activated

6 Channel overview

6.1 Display channels

Note:

The display and adjustment channels as well as the adjustment ranges depend 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

DAY S

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.

Display of store temperatures

Display of further 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.

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.

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 display channels of the heat quantity is selected, the symbol Ⓢ is displayed.

Î In order to access the reset mode of the counter, press button  for approx.

2 s.

Ⓢ starts ashing and the heat quantity value will be set back to zero.

Î In order to nish the reset, press button .

In order to interrupt the reset process, do not press any button for about 5 s. 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.

Î In order to adjust the hours, press button  for approx. 2 s. Î Set the hours by pressing buttons  and . Î In order to adjust the minutes, press button . Î Set the minutes by pressing buttons  and . Î In order to save the adjustments, press button .

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.

Î In order to access the reset mode of the counter, press button  for approx.

2 s.

Ⓢ starts ashing and the operating hours value will be set back to zero.

Î In order to nish the reset, press button .

In order to interrupt the reset process, do not press any button for about 5 s. 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: 6.0 K [12.0 °Ra]

The controller works as a standard differential controller. If the temperature reaches 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 0.5 K [1 °Ra] higher 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: DT O = 10 K [20 °Ra] DT F = 4 K [8 °Ra] DT S = 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.

Speed control

DT S

Set temperature difference Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra] Factory setting: 10.0 K [20.0 °Ra]

RIS

Rise Adjustment range: 1 … 20 K [2 … 40 °Ra] Factory setting: 2 K [4 °Ra]

Note:

For pump speed control, the operating mode of the corresponding relay must be set to Auto (adjustment channel MAN1 or slide switch position centre respectively).

If the temperature difference reaches or exceeds the switch-on temperature difference, the pump switches on at 100 % speed for 10 s. Then, the speed is reduced to the minimum pump speed value.

If the temperature difference reaches the adjusted set value, the pump speed increases by one step (10 %). The response of the controller can be adapted via the parameter Rise. Each time the difference increases by the adjustable rise value, the pump speed increases by 10 % until the maximum pump speed of 100% is reached. If the temperature difference decreases by the adjustable rise value, pump speed will be decreased by one step.

Note:

The set temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-on temperature difference.

PUM

Pump control type Selection: OnOF, PULS, PSOL, PHEA Factory setting: PSOL

With this parameter, the pump control type can be adjusted. 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)

Minimum speed

nMN

Minimum speed Adjustment range: (10) 30 … 100 % Factory setting: 30 % nMN, if ODB is activated: 50 %

In the adjustment channel nMN a relative minimum speed for a pump connected can be allocated to the output R1.

Note:

The pump speed must be set to 100 % when auxiliary relays or valves are connected.

Maximum speed

nMX

Maximum speed Adjustment range: (10) 30 … 100 % Factory setting: 100 %

In the adjustment channel nMX a relative maximum speed for a pump connected can be allocated to the output R1.

Note:

The pump speed must be set to 100 % when auxiliary relays or valves are connected.

PWM feedback signal

PFB

PWM feedback signal Adjustment range: OFF, A, b Factory setting: OFF (A = Wilo pump, b = Grundfos pump)

With this parameter, the type of the PWM feedback signal of a bidirectional HE

pump can be adjusted. The signal transmits either a ow rate between 0 … 2100 l/h

or an error message.

The following messages can be displayed: Err1: PWM interface of the pump defective Err2: The pump is not running optimally, external cause electronics (e. g. overvolt-

age, low voltage)

Err3: The pump stops, but is operable, external cause electronics (e. g. overvoltage,

low voltage)

Err4: The pump stops, but is operable, external cause installation / hydraulics

Err5: The pump stops, but is not operable, internal cause electronics / pump is

stuck

Err6: PWM feedback signal connection defective

Note

If there is an error, the ow rate will not be indicated and the heat quantity measurement will not be carried out.

Maximum store temperature

S MX

Maximum store temperature Adjustment range: 4 … 95 °C [40 … 200 °F] Factory setting: 60 °C [140 °F]

If the store temperature reaches the adjusted maximum temperature, the store will no longer be loaded in order to avoid damage caused by overheating. A non-adjustable hysteresis of 2 K [4 °Ra] is set for the maximum store temperature.

If the maximum store temperature is exceeded, ☼ is displayed.

Note:

If the collector cooling or the system cooling function is activated, the adjusted maximum store temperature may be exceeded. In order to prevent system damage, the controller is also equipped with an integrated store emergency shutdown, deactivating the system if the store reaches 95 °C [200 °F].

Store emergency shutdown

OSEM

Store emergency shutdown option Adjustment range: OFF / ON Factory setting: OFF

This option is used for activating the internal store emergency shutdown for an upper store sensor. If the temperature at the reference sensor exceeds 95 °C [200 °F], the store will be blocked and loading will be stopped until the temperature falls below 90 °C [190 °F].

Note:

S3 is used as the reference sensor.

Collector limit temperature Collector emergency shutdown

Collector limit temperature Adjustment range: 80 … 200 °C [170 … 390 °F] Factory setting: 130 °C [270 °F]

When the collector temperature exceeds the adjusted collector limit temperature, the solar pump (R1) switches off in order to protect the system components against overheating (collector emergency shutdown). If the collector limit temperature is exceeded, ⚠ is displayed.

Note:

If the drainback option ODB is activated, the adjustment range of EM is changed to 80 … 120 °C [170 … 250 °F]. The factory setting in that case is 95 °C [200 °F].

Cooling functions

In the following the 3 cooling functions – collector cooling, system cooling and store cooling – are described in detail. The following note is valid for all 3 cooling functions:

Note:

The cooling functions will not become active as long as solar loading is possible.

Collector cooling

OCC

Collector cooling option Adjustment range: OFF / ON Factory setting: OFF

CMX

Collector maximum temperature Adjustment range: 70 … 160 °C [150 … 320 °F] Factory setting: 110 °C [230 °F]

The collector cooling function keeps the collector temperature within the operating range by heating the store. If the store temperature reaches 95 °C [200 °F] the function will switch off for safety reasons.

If the store temperature exceeds the adjusted maximum store temperature, the solar system is switched off. If the collector temperature increases to the adjusted maximum collector temperature, the solar pump is activated until the collector temperature falls below the maximum collector temperature. The store temperature may then exceed the maximum store temperature, but only up to 95 °C [200 °F] (emergency shutdown of the store).

If the collector cooling function is active, ⓵ and ☼ are displayed (ashing).

Note:

This function will only be available if the system cooling function (OSYC) is deactivated.

System cooling

Store cooling

OSYC

System cooling option Adjustment range: OFF / ON Factory setting: OFF

DTCO

Switch-on temperature difference Adjustment range: 1.0 … 30.0 K [2.0 … 60.0 °Ra]

Factory setting: 20.0 K [40.0 °Ra] The system cooling function aims to keep the solar system operational for a longer

time. The function overrides the maximum store temperature to provide thermal relief of the collector eld and the heat transfer uid on hot days. If the store temperature is higher than the adjusted maximum store temperature and the switchon temperature difference DTCO is reached, the solar pump remains switched on or will be switched on. Solar loading is continued until either the temperature difference falls below the adjusted value DTCF or the collector limit temperature is reached. If the system cooling function is active, ⓵ and ☼ are displayed (ashing).

DTCF

Switch-off temperature difference Adjustment range: 0.5 … 29.5 K [1.0 … 59.0 °Ra] Factory setting: 15.0 K [30.0 °Ra]

Note:

This function will only be available, if the collector cooling function (OCC) is deactivated.

OSTC

Store cooling option Adjustment range: OFF / ON Factory setting: OFF

OHOL

Holiday cooling option Adjustment range: OFF / ON Factory setting: OFF

THOL

Holiday cooling temperature Adjustment range: 20 … 80 °C [70 … 175 °F] Factory setting: 40 °C [110 °F]

When the store cooling function is activated, the controller aims to cool down the store during the night in order to prepare it for solar loading on the following day.

If the adjusted maximum store temperature (S MX) is exceeded and the collector temperature falls below the store temperature, the system will be reactivated in order to cool down the store. Cooling will continue until the store temperature has fallen below the adjusted maximum store temperature (S MX) again. A hysteresis of 2 K [4 °Ra] is set for the store cooling function.

Reference threshold temperature differences for the store cooling function are DT O and DT F.

If no DHW consumption is expected for a longer period of time, the additional holiday cooling option OHOL can be activated in order to extend the store cooling function. The adjustable temperature THOL then replaces the maximum store temperature (S MX) as the switch-off temperature for the store cooling function.

When the holiday cooling function is activated, ☼ and ⚠ (ashing) are shown on the display.

If the holiday cooling function is active, ⓵, ☼ and ⚠ are displayed (ashing).

Note:

The holiday cooling will only become active when the holiday mode is triggered by means of button ⛁ (see page 12).

Minimum collector limitation

Antifreeze function

OCF

Antifreeze function option Adjustment range: OFF / ON Factory setting: OFF

OCN

Collector minimum limitation option Adjustment range: OFF / ON Factory setting: OFF

CMN

Minimum collector temperature Adjustment range: 10.0 … 90.0 °C [50.0 … 190.0 °F] Factory setting: 10.0 °C [50.0 °F]

If the collector minimum limitation option is activated, the pump (R1) is only switched on if the adjustable collector minimum temperature is exceeded. The minimum temperature prevents the pump from being switched on too often at low collector temperatures. A hysteresis of 5 K [10 °Ra] is set for this function. If the collector minimum limitation is active, ❄ is displayed (ashing).

Note:

If OSTC or OCF is active, the collector minimum limitation will be overridden. In this case, the collector temperature may fall below CMN.

CFR

Antifreeze temperature Adjustment range: -40.0 … +10.0 °C [-40.0 … +50.0 °F] Factory setting: +4.0 °C [+40.0 °F]

The antifreeze function activates the loading circuit between the collector and the store when the temperature falls below the adjusted antifreeze temperature. This will protect the uid against freezing or coagulating. If the adjusted antifreeze temperature is exceeded by 1 K [2 °Ra], the loading circuit will be deactivated.

If the antifreeze function is activated, ❄ is displayed. If the antifreeze function is active, ⓵ and ❄ are displayed (ashing).

Note:

Since this function uses the limited heat quantity of the store, the antifreeze function should be used in regions with few days of temperatures around the freezing point. The antifreeze function will be suppressed if the store temperature falls below +5 °C [+40 °F] in order to protect the store from frost damage.

Tube collector function

OTC

Tube collector option Adjustment range: OFF / ON Factory setting: OFF

TCST

Tube collector function starting time Adjustment range: 00:00 … 23:45

Factory setting: 07:00 This function is used for improving the switch-on behaviour in systems with

non-ideal sensor positions (e. g. with some tube collectors). This function operates within an adjusted time frame. It activates the collector circuit pump for an adjustable runtime between adjustable standstill intervals in order to compensate for the delayed temperature measurement.

If the runtime is set to more than 10 s, the pump will run at 100 % for the rst 10 s

of the runtime. For the remaining runtime, the pump will be run at the adjusted minimum speed. If the collector sensor is defective or the collector is blocked, this function is suppressed or switched off.

TCEN

Tube collector function ending time Adjustment range: 00:00 … 23:45 Factory setting: 19:00

TCRU

Tube collector function runtime Adjustment range: 5 … 500 s Factory setting: 30 s

TCIN

Tube collector function standstill interval Adjustment range: 1 … 60 min Factory setting: 30 min

Note:

If the drainback option ODB is activated, TCRU will not be available. In this case, the runtime will be determined by the parameters tFLL and

tSTB.

Grundfos Direct Sensor™ registration

GFD

Grundfos Direct Sensor™ registration Selection: OFF, 12, 40, 40F Factory setting: OFF

Registration of a digital ow rate sensor which can be used for heat quantity measurement.

OFF : no Grundfos Direct Sensor™ 12 : VFD 1-12 (water / propylene glycol mixture) 40 : VFD 2-40 40F : VFD 2-40 Fast (water only)

Heat quantity measurement

The heat quantity measurement can be carried out in 3 different ways (see below):

with a xed ow rate value, with a VFD Grundfos Direct Sensor™ or with a PWM

feedback signal.

Heat quantity measurement with xed ow rate value

The heat quantity balancing (estimation) uses the difference between the collector

and the store base temperatures and the entered ow rate (at 100 % pump speed).

Î Read the ow rate (l/min) and adjust it in the FMAX channel. Î Adjust the antifreeze type and concentration of the heat transfer uid in the

channels MEDT and MED%.

FMAX

Flow rate in l/min Adjustment range: 0.5 … 100.0 Factory setting: 6.0

Note:

The FMAX channel will be available only if the SEN channel has been set to OFF or if no VFD Grundfos Direct Sensor™ is activated.

Heat quantity measurement with a VFD Grundfos Direct Sensor™ In order to use a VFD Grundfos Direct Sensor™ for heat quantity measurement,

proceed as follows:

Î Register the VFD Grundfos Direct Sensor™ in the GFD channel. Î Adjust the position of the VFD Grundfos Direct Sensor™ in the SEN channel. Î Adjust the antifreeze type and concentration of the heat transfer uid in the

channels MEDT and MED%.

Heat quantity measurement with a PWM feedback signal

In order to use a VFD Grundfos Direct Sensor™ for heat quantity measurement, proceed as follows:

Î Register the PWM feedback signal of a bidirectional HE pump on the PFB

channel.

Î Adjust the antifreeze type and concentration of the heat transfer uid in the

channels MEDT and MED%.

The VFD Grundfos Direct Sensor™ can optionally be used for measuring the temperature:

Î Register the VFD Grundfos Direct Sensor™ in the GFD channel. Î Adjust the position of the VFD Grundfos Direct Sensor™ in the SEN channel.

Note

if a VFD Grundfos Direct Sensor™ is optionally activated, it will not be

used for measuring the ow rate but for measuring the ow and return

temperature respectively.

Note

If the PWM feedback signal sends an error message, heat quantity measurement will not be carried out.

SEN

Digital ow rate sensor (only if GDF = 12, 40 or 40 F)

Selection: OFF, 1, 2 Factory setting: 2

Flow rate detection type:

OFF : PWM feedback signal or xed ow rate value (owmeter) 1 : PWM feedback signal or Grundfos Direct Sensor™ in the ow pipe

2 : PWM feedback signal or Grundfos Direct Sensor™ in the return pipe

Sensor allocation for heat quantity measurement:

1 2 OFF

SFL SRET SFL SRET SFL SRET

GFD S4 S1 GFD S1 S2

MEDT

Heat transfer uid

Adjustment range: 0 … 3 Factory setting: 1

Heat transfer uid:

0 : Water 1 : Propylene glycol 2 : Ethylene glycol 3 : Tyfocor

LS / G-LS

MED%

Antifreeze concentration in Vol-% (MED% is not indicated when MEDT 0 or 3 is used.) Adjustment range: 20 … 70 % Factory setting: 40 %

Thermostat function for backup heating

Note:

The thermostat function is only available when the slide switch is in the centre position.

Note:

The thermostat switch-on temperature can only be lower than or equal to the thermostat switch-off temperature.

The thermostat function can be used for backup heating. S3 is used as the reference sensor.

If the temperature falls below the thermostat switch-on temperature BH O, relay R2 is energised for backup heating. If the thermostat switch-off temperature BH F is exceeded, the relay switches off.

The thermostat function is deactivated, if the thermostat switch-on temperature and the thermostat switch-off temperature are set to an identical value.

Note:

When the holiday mode is active, the thermostat function will be suppressed.

Backup heating suppression

BHMN

Comfort temperature Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Factory setting: 40.0 °C [110.0 °F]

When solar loading is in progress, backup heating will be suppressed until the temperature at S3 falls below the comfort temperature BHMN.

When BHMN and BH O are set to identical values, the function will be deactivated.

BH O

Thermostat switch-on temperature Adjustment range: 0 … 95 °C [30 … 200 °F] Factory setting: 40 °C [110 °F]

BH F

Thermostat switch-off temperature Adjustment range: 0 … 95 °C [30 … 200 °F] Factory setting: 45 °C [120 °F]

t1 (2, 3) O

Thermostat switch-on time Adjustment range: 00:00 … 23:45 Factory setting: 00:00

t1 (2, 3) F

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 3 time frames t1 … t3. The switch-on and switch-off times can be adjusted in steps of 15 min.

If the thermostat function is supposed to run from 06:00 a.m. to 09:00 a.m. only, adjust t1 O to 06:00 a.m. and t1 F to 09:00 a.m.

If the switch-on and switch-off times of a time frame are set to an identical value, the time frame will be inactive.

If all time frames are set to 00:00, the thermostat function is solely temperature dependent (factory setting).

Rapid heat-up

BOOS

Rapid heat-up runtime Adjustment range: 0 … 300 min Factory setting: 90 min

Adjustment of the maximum runtime for the rapid heat-up to be active. Rapid heat-up enables immediate heating of the store even outside the adjusted

time frames. If rapid heat-up is activated, the controller will switch on the backup heating of the

store. Rapid heat-up of the store will stop if the switch-off temperature BH F is reached at sensor S3.

Î In order to activate the rapid heat-up, scroll to the rst display channel, press

and hold down button

for 3 s. It is also possible to press the button of the

RCTT Remote control (accessory) instead.

3 s

Î In order to deactivate the rapid heat-up, press and hold down the upper con-

troller button again for 3 s. It is also possible to press the button of the RCTT Remote control again instead.

Note:

If the temperature at sensor S3 exceeds the adjusted switch-off temperature BH F while rapid heat-up is being activated, rapid heat-up will be blocked.

Drainback option

Note:

A drainback system requires additional components such as a holding tank. The drainback option should only be activated if all components required are properly installed.

In a drainback system, the heat transfer uid will ow into a holding tank if solar loading does not take place. The drainback option initiates the lling process if

solar loading is about to start. If the drainback option is activated, the following adjustment can be made.

ODB

Drainback option Adjustment range: OFF / ON Factory setting: OFF

Note:

If the drainback option is activated, the cooling functions and the antifreeze function will not be available. If one or more than one of these functions have been activated before, they will be deactivated again as soon as ODB is activated. They will remain deactivated, even if ODB is deactivated later on.

Note:

If the drainback function ODB is activated, the factory settings of the parameters nMN, DT O, DT F and DT S will be adapted to values suiting drainback systems. Additionally, the adjustment range and the factory setting of the collector emergency shutdown will change. Adjustments previously made in these channels will be overridden and have to be entered again if the drainback option is deactivated later on.

Time period – switch-on condition

Thermal disinfection of the upper DHW zone

tDTO

Time period – switch-on condition Adjustment range: 1 … 100 s Factory setting: 60 s

The parameter tDTO is used for adjusting the time period during which the

switch-on condition must be permanently fullled.

Filling time

tFLL

Filling time Adjustment range: 1.0 … 30.0 min Factory setting: 5.0 min

The lling time can be adjusted using the parameter tFLL. During this period, the pump runs at 100 % speed.

Stabilisation

tSTB

Stabilisation Adjustment range: 1.0 … 15.0 min Factory setting: 2.0 min

The parameter tSTB is used for adjusting the time period during which the

switch-off condition will be ignored after the lling time has ended.

OTD

Therm. disinfection function Adjustment range: OFF / ON Factory setting: OFF

PDIS

Monitoring period Adjustment range: 0 … 30:0 … 24 h (dd:hh) Factory setting: 01:00

DDIS

Disinfection period Adjustment range: 0:00 … 23:59 (hh:mm)

Factory setting: 01:00

TDIS

Disinfection temperature Adjustment range: 0 … 95 °C [30 … 200 °F] Factory setting: 60 °C [140 °F]

Reference sensor for this function is S3. R2 is the reference relay. This function helps to contain the spread of Legionella in DHW stores by system-

atically activating the backup heating.

For thermal disinfection, the temperature at the reference sensor will be monitored. Protection is ensured when, during the monitoring period, the disinfection temperature is continuously exceeded for the entire disinfection period.

The monitoring period starts as soon as the temperature at the reference sensor falls below the disinfection temperature. When the monitoring period ends, the allocated reference relay activates the backup heating. The disinfection period starts, if the temperature at the allocated sensor exceeds the disinfection temperature.

Thermal disinfection can only be completed when the disinfection temperature is exceeded for the duration of the disinfection period without any interruption.

Starting time delay

SDIS

Starting time Adjustment range: 0:00 … 24:00 (time) Factory setting: 00:00

If the starting delay option is activated, a starting time for the thermal disinfection with starting delay can be adjusted. The activation of the backup heating is then delayed until that starting time after the monitoring period has ended.

If the monitoring period ends, for example, at 12:00 o'clock, and the starting time has been set to 18:00, the reference relay will be energised with a delay of 6 hours at 18:00 instead of 12:00 o'clock.

Note: If the thermal disinfection option is activated, the display channels TDIS, CDIS, SDIS and DDIS will be displayed.

Note:

The thermal disinfection function is only available when the slide switch is in the centre position. The function can also become active during holiday mode.

Operating mode

MAN1 / MAN2

Operating mode Adjustment range: OFF, Auto, On Factory setting: R1: On, R2: OFF

For control and service work, the operating mode of the relays can be manually adjusted. For this purpose, select the adjustment value MAN1 (for R1) or MAN2 (for R2) in which the following adjustments can be made:

• MAN1 / MAN2

Operating mode OFF : Relay off ⚠ (ashing) + ☛ Auto : Relay in automatic operation ON : Relay on ⚠ (ashing) + ☛ + ⓵ / ⓶

If the slide switch is in the right-hand position, manual mode will become active with the adjustments made previously. The parameters MAN1 / MAN2 can be accessed directly via the shortcut (see page 12).

Note:

Always adjust the slide switch back to the center or left-hand position when the control and service work is completed. Normal operation is not possible in manual mode.

Language

Reset

LANG

Language selection Selection: dE, En, Fr, ES, It Factory setting: dE

In this adjustment channel the menu language can be selected.

• dE : German

• En : English

• Fr : French

• ES : Spanish

• It : Italian

Unit

UNIT

Temperature unit selection Selection: °F, °C Factory setting: °C

In this adjustment channel, the display unit for temperatures and temperature differences can be selected. The unit can be switched between °C / K and °F / °Ra during operation.

Temperatures and temperature differences in °F and °Ra are displayed without units. If the indication is set to °C, the units are displayed with the values.

RESE

Reset function By means of the reset function, all adjustments can be set back to their factory

settings.

Î In order to carry out a reset, press button .

All adjustments that have previously been made will be lost! For this reason, a security enquiry will appear after the reset function has been selected.

Only conrm the security enquiry if you are sure you want to set back all adjustment to the factory setting.

Security enquiry

Î In order to conrm the security enquiry, press button .

Note:

After a reset, the commissioning menu will start again (see page 13).

7 RCTT Remote control (accessory)

The RCTT Remote control enables rapid heat-up activation via the button without having to access the controller menu. It is connected to the controller with a 3-wire cable (see page 6).

If the button of the RCTT is pressed, rapid heat-up will be activated on the controller. If rapid heat-up is already active, it will be deactivated.

If rapid heat-up is active on the controller, the LED of the RCTT will be permanently red.

If rapid heat-up is not possible, because the temperature at sensor S3 has exceeded

the switch-off temperature BH F, the LED of the RCTT will briey ash 3 times. In the case of a sensor fault, the LED of the RCTT will be ashing continuously.

The RCTT Remote control has to be connected to the controller according to the installation instructions mentioned in the RCTT Remote control manual.

8 Troubleshooting

WARNING!

The controller is protected by a fuse. The fuse holder (which also holds the spare fuse) becomes accessible when the cover is removed. To replace the fuse, pull the fuse holder from the base.

Electric shock!

Upon opening the housing, live parts are exposed!

Î Always disconnect the device from power supply

before opening the housing!

If a malfunction occurs, the display symbols will indicate an error code (see page 11).

Operating control LED ashes red. The symbol ☍ is indicated on the display and the symbol ⚠ is ashing.

Sensor fault. An error code instead of a temperature is shown on the sensor

display channel.

- 88.8888.8

Cable is broken. Check the cable. Short circuit. Check the cable.

Disconnected temperature sensors can be checked with an ohmmeter. Please

check if the resistance values correspond with the table.

Fuse

Note

For answers to frequently asked questions (FAQ) see www.resol.com.

°C °F Ω

Pt1000

-10 14 961 55 131 1213

-5 23 980 60 140 1232

0 32 1000 65 149 1252

5 41 1019 70 158 1271

10 50 1039 75 167 1290

15 59 1058 80 176 1309

20 68 1078 85 185 1328

25 77 1097 90 194 1347

30 86 1117 95 203 1366

35 95 1136 100 212 1385

40 104 1155 105 221 1404

45 113 1175 110 230 1423

50 122 1194 115 239 1442

°C °F Ω

Pt1000

Resistance values of Pt1000 sensors

Operating control LED is permanently off

Pump starts up very late.

If the operating control LED is off, check the power supply of the controller. Is

it disconnected?

The fuse of the controller could be blown. The fuse holder (which holds the spare fuse) becomes accessible when the cover is removed. The fuse can then be replaced.

Pump is overheated, but no heat transfer from the collector to the store, ow

and return have the same temperature; perhaps also bubbling in the lines.

Air or gas bubbles in the system?

Is the collector circuit blocked at

the dirt trap?

Pump starts for a short moment, switches off, switches on again, etc.

Temperature difference at the controller too small?

Wrong position of collector

sensors?

Plausibility control of the option

tube collector special function

yes

Check the supply line and recon-

nect it.

Vent the system; increase the system pressure to a static primary pressure of at least plus 0.5 bar; if necessary continue to increase pressure; switch the pump on and off for a short time.

Clean dirt trap

Change ∆Ton and ∆Toff corre-

spondingly.

no o.k.

Mount the collector sensor at

solar ow (warmest collector

output); use immersion sleeve of the respective collector.

yes

Switch-on temperature difference

∆Ton too large?

Non-ideal position of the collector

sensor (e. g. atscrew sensor

instead of sensor in immersion sleeves).

The temperature difference between store and collector increases enormously during operation; the collector circuit cannot dissipate the heat

Collector circuit pump defective?

Heat exchanger calcied?

Heat exchanger blocked?

Heat exchanger too small?

yes

Change ∆Ton and ∆Toff corre-

spondingly.

Activate tube collector function if necessary.

o.k.

Check / replace it

Decalcify it

Clean it

Replace with correctly sized one.

The solar circuit pump does not work, although the collector is considerably warmer than the store

Is the operating control LED on?

yes

Does the pump start up in manual

operation?

Is the pump current enabled by

the controller?

Is the fuse of the controller OK?

Replace the fuse.

Controller might be defective replace it.

Store cools down at night.

Collector circuit pump runs

during the night?

Collector temperature at night is higher than the outdoor temperature.

Sufcient store insulation?

yes

There is no current; check fuses / replace them and check power supply.

The adjusted temperature difference for starting the pump is too high; choose a value which makes more sense.

Is the pump stuck?

Turn the pump shaft using a screw-

driver; now passable?

Pump is defective - replace it.

Check controller

Check the non-return valves in

the ow and the return pipe for functional efciency.

Increase insulation.

yes

Insulation close enough to the

store?

yes

Are the store connections insulated?

yes

Warm water outow upwards?

Does the DHW circulation run for a very long time?

Circulation pump and blocking valve should be switched off for 1 night; less store losses?

yes

Check the non-return valve in warm water circulation - o.k.

yes

The gravitation circulation in the circulation line is too strong; insert a stronger valve in the non-return valve or an electrical 2-port valve behind the circulation pump; the 2-port valve is open when the pump

yes

Replace insulation or increase it.

Insulate the connections.

Change connection and let the

water ow sidewards or through

a siphon (downwards); less store losses now?

Use the circulation pump with

timer and switch-off thermostat

(energy-efcient circulation).

Check whether the pumps of the

backup heating circuit run at night; check whether the non-return valve is defective; problem solved?

Further pumps which are connected to the solar store must also be checked.

Clean or replace it.

is activated, otherwise it is closed; connect pump and 2-port valve electrically in parallel; activate the circulation again. Deactivate pump speed control!

yes

o.k.

9 Accessories

Sensors

SD3 Smart Display /

GA3 Large Display

Overvoltage protection

device

RCTT Remote control

VBus® / USB & VBus® / LAN

interface adapters

AM1 Alarm module

KM2 Communication

module

DL2 Datalogger

DL3 Datalogger

9.1 Sensors

Sensors

The product range includes high-precision platinum temperature sensors, atscrew

sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip-on sensors, also as complete sensors with immersion sleeve.

Overvoltage protection device

Overvoltage protection device, suitable for mounting outdoors.

9.2 VBus

accessories

SD3 Smart Display / GA3 Large Display

The SD3 Smart Display is used for visualising data issued by the controller: collector temperature, store temperature and energy yield of the solar thermal system.

The GA3 is a completely mounted large display module for visualisation of collector- and store temperatures as well as the heat quantity yield of the solar system.

AM1 Alarm module

Alarm module for signalling system failures.

/ LAN interface adapter

VBus

The VBus® / LAN interface adapter is designed for the direct connection of the controller to a PC or router. It enables easy access to the controller via the local network of the owner.

DL2 Datalogger

For visualisation via VBus.net, incl. SD card and network cable, mains adapter and

cable pre-connected.

VBus

DL3 Datalogger

For visualisation via VBus.net, incl. SD card, mains adapter, network and VBus

KM2 Communication module

The KM2 Communication module is the ideal interface between a solar or heating controller and the Internet. In only a few steps, the controller can be connected to the VBus.net visualisation portal. The communication module is suitable for all controllers with VBus

and enables the easy and secure access to system data via VBus.net. Remote access to your controller is also possible, of course, via the RPT Parameterisation Tool.

cable..

RCTT Remote control

The RCTT Remote control enables rapid heat-up activation via the button without having to access the controller menu (see page 33).

VBus.net

The Internet portal for easy and secure access to your system data. VBus.net is all about the data of your controller. Live data of your system, custom-

ized lter settings and much more await you.

10 Index

Accessories......................................................................................................................... 37

Antifreeze function ........................................................................................................... 25

Backup heating ................................................................................................................... 28

Backup heating suppression ............................................................................................ 28

Cable link .............................................................................................................................. 8

Collector cooling .............................................................................................................. 23

Collector emergency shutdown .................................................................................... 23

Commissioning .................................................................................................................. 13

Cooling function ................................................................................................................ 23

∆T control .......................................................................................................................... 20

Display ........................................................................................................................... 10, 17

Drainback option .............................................................................................................. 29

Flashing codes .................................................................................................................... 12

Flow rate ....................................................................................................................... 18, 27

Grundfos Direct Sensor™ ............................................................................................. 26

Heat quantity measurement ........................................................................................... 27

Holiday ........................................................................................................................... 12, 24

Language .............................................................................................................................. 32

Manual mode ................................................................................................................ 12, 31

Minimum collector temperature ................................................................................... 25

Operating hours counter ................................................................................................ 20

Pump control type ............................................................................................................ 21

PWM feedback .................................................................................................................. 22

PWM interface..................................................................................................................... 7

PWM signal ........................................................................................................................... 7

Rapid heat-up ..................................................................................................................... 12

Remote control ................................................................................................................. 33

Reset .................................................................................................................................... 32

Sensor .................................................................................................................................... 6

Shortcut .............................................................................................................................. 12

Slide switch ......................................................................................................................... 12

Speed control ..................................................................................................................... 21

Store cooling ...................................................................................................................... 24

System screen .................................................................................................................... 11

Temperature differential control (DT control) ........................................................... 20

Thermal disinfection ......................................................................................................... 30

Thermostat function ........................................................................................................ 28

Time ............................................................................................................................... 13, 19

Tool bar ............................................................................................................................... 11

Troubleshooting ................................................................................................................. 34

Tube collector function.................................................................................................... 26

..................................................................................................................................... 7

VBus

Distributed by:

RESOL – Elektronische Regelungen GmbH

Heiskampstraße 10 45527 Hattingen / Germany

Tel.: +49 (0) 23 24 / 96 48 - 0 Fax: +49 (0) 23 24 / 96 48 - 755

www.resol.com info@resol.com

Important note

The texts and drawings in this manual are correct to the best of our knowledge. As faults can never be excluded, please note:

Your own calculations and plans, under consideration of the current standards and directions should only be basis for your projects. We do not offer a guarantee for the completeness of the drawings and texts of this manual - they only represent some examples. They can only be used at your own risk. No liability is assumed for incorrect, incomplete or false information and / or the resulting damages.

Note

The design and the specications can be changed without notice.

The illustrations may differ from the original product.

Imprint

This mounting- and operation manual including all parts is copyrighted. Another use outside the copyright requires the approval of RESOL – Elektronische Rege-

lungen GmbH. This especially applies for copies, translations, micro lms and the

storage into electronic systems.

Resol DeltaSol AL EHE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Overview

2 Installation

2.1 Mounting

2.2 Electrical connection

2.4 PWM interface

2.5 Data communication / Bus

2.6 Terminal allocation with cable link

2.7 Terminal allocation without cable link

3 Operation and function

3.1 Buttons

3.2 System-Monitoring-Display

3.3 Slide switch

3.4 Flashing codes

3.5 Shortcuts for backup heating off, rapid heat-up and holiday mode

4 Commissioning

5 Control parameters and display channels

5.1 Channel overview

6 Channel overview

6.1 Display channels

6.2 Adjustment channels

7 RCTT Remote control (accessory)

8 Troubleshooting

9 Accessories

9.1 Sensors

10 Index