REMEHA Sol Plus User Manual

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Page 1

Sol Plus

Solar controller with “SOLARFIRST” function and “STEAMBACK®” safety function

Manual for the specialised craftsman

Installation Operation Functions and options Troubleshooting

*11208356*

11208356

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

Manual

Page 2

Safety advice

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

Instructions

Attention must be paid to the valid local standards, regulations and directives!

Information about the product

Proper usage

The solar controller is designed for electronically controlling standard solar thermal

systems in compliance with the technical 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 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.

Subject to technical change. Errors excepted.

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!

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.

• Dispose of old appliances in an environmentally sound manner. Upon request we will take back your old appliances bought from us and guarantee an environmentally sound disposal of the devices.

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Contents

1 Overview .............................................................................................. 5

2 Installation ........................................................................................... 6

2.1 Mounting ........................................................................................................................6

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

2.3 PWM outputs ................................................................................................................7

2.4 Data communication / Bus .......................................................................................... 7

2.5 System overview ...........................................................................................................7

2.6 Systems ...........................................................................................................................9

3 Application examples ........................................................................ 47

4 Operation and function .................................................................... 48

4.1 Buttons ........................................................................................................................ 48

5 System-Monitoring-Display .............................................................. 48

5.1 Flashing codes ............................................................................................................ 49

6 Commissioning .................................................................................. 50

7 Channel overview .............................................................................. 52

7.1 Display channels ......................................................................................................... 52

7.2 Adjustment channels ................................................................................................ 55

8 Troubleshooting ................................................................................. 66

9 Accessories ........................................................................................ 69

9.1 Sensors and measuring instruments ..................................................................... 70

9.2 VBus

accessories ..................................................................................................... 70

9.3 Interface adapters ...................................................................................................... 70

10 Index ................................................................................................... 71

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Sol Plus solar controller

The Sol Plus has been especially developed for the speed control of high-efciency

pumps in standard solar and heating systems. It is equipped with 2 PWM outputs. Solar packages for DHW heating and heating backup with DeDietrich boilers: The SOLAR Sol Plus with “SOLARFIRST” function (see page 47) and ModBus

controls a solar system with 1 collector eld and 1 store with integrated heat exchanger. The Sol Plus is designed for DHW heating and heating backup.

The Sol Plus controllers are equipped with the “SOLARFIRST” function via ModBus and can be connected to DeDietrich boiler controllers by means of ModBus cables.

As soon as the solar control switches on, the system will be set to solar priority via the connection to the boiler.

The set hot water temperature will be reduced (adjustable 0-30 K). This way, the water will be heated by the solar system rst. If the solar system switches off, solar priority will be stopped and the controller switches the boiler to its standard adjustments.

Due to this function, the solar system can supply 20 % more heat for the store.

The “STEAMBACK” safety concept: The Sol Plus controller is part of the “STEAMBACK” safety concept. If the col-

lector temperature reaches 130 °C, all functions will be deactivated. The uid in

the collector continues heating and will turn into vapour at 140 °C. It will then be pressed into the expansion vessel through extension.

The collector will not contain any solar uid then. There will be no steam hammer - the solar uid will not be harmed. If the suns goes down and if the collector temperature falls below 140 °C, the solar uid will condense and the pressure in the expansion vessel will ll the collector again. Only if the collector temperature

falls below 100 °C and that of the store below 60 °C, will the controller activate the solar system.

Whether holiday, power failure or fault - the DeDietrich “STEAMBACK” safety function protects your solar system and makes it maintenance-free and durable.

The Sol Plus solar controller is used for controlling a solar system with 1 store with integrated heat exchanger and one 3-port valve for return preheating. It can also control a solar system with 1 store with 2 integrated heat exchangers via a 3-port valve. The Sol Plus is designed for DHW heating and heating backup in solar thermal systems connected in series.

It can be directly mounted onto the pump station. For using several functions such as store base/top or combined store with return preheating, the controller can also control a 3-port valve in addition to the solar circuit pump. The parameter Arr can

be used for selecting the system conguration.

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1 Overview

• Especially designed for the speed control of high-efciency pumps

• System-Monitoring-Display

• Up to 4 Pt1000 temperature sensors

• 2 semiconductor relays for pump speed control

• HE pump control

• Heat quantity measurement

• Commissioning menu

• 10 basic systems to choose from

• Function control

• Optional thermal disinfection function

• Drainback option

• Unit °F and °C selectable

• “SOLARFIRST” function

172

Upper fastening

130

Lower fastening

Technical data

Inputs: 4 Pt1000 temperature sensors

Outputs: 2 semiconductor relays, 2 PWM outputs

PWM frequency: 512 Hz PWM voltage: 10.5 V Switching capacity per relay:

R1: 1 (1) A 100 … 240 V~ (semiconductor relays) R2: 1 (1) A 100 … 240 V~ (semiconductor relays)

Total switching capacity: 2 A 240 V~

Power supply: 100 … 240 V~, 50 … 60 Hz

Supply connection: type Y attachment

Power consumption (standby): < 1 W

Mode of operation: type 1.C.Y action

Rated impulse voltage: 2.5 kV

Data interface: VBus

current supply: 35 mA

VBus

, ModBus switching signal for the “SOLARFIRST” function

Functions: function control, operating hours counter, tube collector function, thermostat function, speed control, drainback and booster option, heat quantity measurement

Housing: plastic, PC-ABS and PMMA

Mounting: wall mounting, also suitable for mounting into patch panels

Indication / Display: System-Monitoring-Display for visualisation of systems,

16-segment and 7-segment display, 8 symbols for indication of system status

Operation: 3 push buttons at the front

Protection type: IP 20 / EN 60529

Protection class: I

Ambient temperature: 0 … 40 °C [32 … 104 °F]

Degree of pollution: 2

Dimensions: 172 x 110 x 46 mm

110

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2 Installation

2.1 Mounting

WARNING!

Installation Indications, functions and options MessagesCommissioningOperation and function

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 controller.

Î Make sure the controller as well as the system are not exposed to

strong electromagnetic elds.

The unit must only be located in dry interior rooms. The controller must additionally be supplied from a double pole switch with contact

gap of at least 3 mm. Please pay attention to separate routing of sensor cables and mains cables. In order to mount the device to the wall, carry out the following steps:

Î Unscrew the crosshead screw from the cover and remove it along with the

cover from the housing.

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

point (centres 130 mm). Î Insert 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

chapter 2.2). Î Put the cover on the housing. Î Attach with the fastening screw.

display

cover

cable conduits with strain relief

button

fuse T4A

2.2 Electrical connection

WARNING!

ESD damage!

Electrostatic discharge can lead to damage to electronic components!

Î Take care to discharge properly before touching the

inside of the device!

WARNING!

Electric shock!

Upon opening the housing, live parts are exposed!

Î Always disconnect the device from power supply be-

fore opening the housing!

Note

The mains connection must be carried out with the common ground of the building to which the pipework of the solar circuit is connected.

Note

Connecting the device to the power supply must always be the last step of the installation!

Note

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

Page 7

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

171615

14131212

NR2

T2A

100 ... 240 V~

50-60 Hz

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

PWM 1/2

ModBus

345678910

F-67580 Mertzwiller

DDTh

Sol Plus

Article/Artikel 7630422

Soft version 2.00

Serial number

IP 20

The power supply of the device must be 100 … 240 V~ (50 … 60 Hz). Attach exible

1 (1) A 240 V~ 1 (1) A 240 V~

T2A

100 ... 240 V~

50-60 Hz

F-67580 Mertzwiller

DDTh

Sol Plus

Article/Artikel 7630422

Soft version 2.00

Serial number

IP 20

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

NR2

T2A

100 ... 240 V~

50-60 Hz

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

PWM 1/2

ModBus

F-67580 Mertzwiller

DDTh

Sol Plus

Article/Artikel 7630422

Soft version 2.00

Serial number

IP 20

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

The controller is equipped with 2 semiconductor relays to which loads such as

pumps, valves, etc. can be connected:

Relay 1 Relay 2

18 = Conductor R1 16 = Conductor R2 17 = Neutral conductor N 15 = Neutral conductor N 13 = Protective earth conductorr ⏚ 14 = Protective earth conductorr ⏚

The mains connection is at the following terminals:

19 = Neutral conductor N

20 = Conductor L

12 = Protective earth conductor ⏚

Connect the temperature sensors (S1 to S4) to the corresponding terminals

with either polarity:

1 / 2 = Sensor 1 (e. g. collector sensor 1)

3 / 4 = Sensor 2 (e. g. store sensor 1)

5 / 6 = Sensor 3 (e. g. store sensor top)

7 / 8 = Sensor 4 (e. g. return sensor)

Fuse

2.3 PWM outputs

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 one of the PWM outputs of the controller. Power is supplied to the HE pump by switching the corresponding relay on or off.

The terminals marked PWM 1 / 2 are control outputs for pumps with PWM control input.

PWM 1/2

1 = PWM output 1, control signal 2 = PWM output 1, GND 3 = PWM output 2, GND

2 4

1 3

4 = PWM output 2, control signal

1 = ModBus A 2 = GND 3 = free

2 4

1 3

4 = ModBus B

ModBus = Optional (for connection to the boiler (if provided by the boiler))

2.4 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 (either polarity).

One or more VBus

modules can be connected via this data bus, such as:

• DL2 Datalogger

• DL3 Datalogger 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).

Note

More accessories on page 69.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

ModBus

connection

PWM

connection

VBus

sensor terminals

protective earth conductor terminal

load terminals

mains

terminals

Page 8

2.5 System overview

Standard solar system (page 9)

Solar system with 2 stores and valve logic (page 26)

Solar system with heating circuit return preheating (page 41)

Solar system with heat exchange (page 12)

Solar system with 2 stores and pump logic (page 29)

Standard solar system with heat dump (page 44)

Solar system with backup heating (page 18)

Solar system with east-/west collectors and 1 store (page 32)

Solar system with store loading in layers (page 23)

Solar system with backup heating by solid fuel boiler (page 35)

Page 9

2.6 Systems

VBus

PWM 1/2

ModBus

Arrangement 1: Standard solar system

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.

Sensors S3 and S4 can optionally be connected. S3 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S4 is used as the return sensor. If the drainback option (ODB) is activated, relay 2 can be used for activating a

booster pump. For this purpose, the booster function (OBST) has to be activated.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

S4 / TR

S3 / TSTT

R1 R2

drainback system layout

(with booster pump)

exemplary

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Display channels

Channel Description Connection terminal Page INIT x* ODB initialisation active - 52 FLL x* ODB lling time active - 52

Installation Indications, functions and options MessagesCommissioningOperation and function

STAB x* ODB stabilisation in progress - 52 COL x Temperature collector S1 53 TST x Temperature store S2 53 S3 x Temperature sensor 3 S3 53 TSTT x* Temperature store top S3 53 S4 x Temperature sensor 4 S4 53 n % x Speed R1 R1 54 hP x Operating hours R1 R1 55 hP1 x* Operating hours R1 (if OBST is activated) R1 55 hP2 x* Operating hours R2 (if OBST is activated) R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 1 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

nMN x Minimum speed R1 30 % 57

nMX x Maximum speed R1 100 % 57

S MX x Maximum store temperature 75 °C [167 °F] 57 OSEM x Store emergency shutdown option OFF 57

EM x

OCC x Collector cooling option OFF 58 CMX x* Maximum collector temperature 110 °C [230 °F] 58 OSYC x System cooling option OFF 59

Collector emergency temperature 130 °C [270 °F] 58 Collector emergency temperature if ODB is activated: 95 °C [200 °F] 58

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Adjustment channels

Channel Description Factory setting Page DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 59 DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 59 OSTC x Store cooling option OFF 59 OHOL x* Holiday cooling option OFF 59 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Collector minimum limitation option OFF 60 CMN x* Collector minimum temperature 10 °C [50 °F] 60 OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 OHQM x Heat quantity measurement option OFF 62 FMAX x* Maximum ow rate 6.0 l/min 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene glycol) 45 % 63 ODB x Drainback option OFF 63 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB lling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 OBST s* Option booster function OFF 64

MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Legend:

Symbol Description

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

Page 12

Arrangement 2: Solar system with heat exchange

VBus

PWM 1/2

ModBus

Installation Indications, functions and options MessagesCommissioningOperation and function

1, and the store will be loaded until the switch-off temperature difference (DT F) or the maximum store temperature (S MX) is reached.

Heat exchange from store 1 to store 2 will be operated by relay 2, if the temperature difference between sensors S3 and S4 is larger than or identical to the adjusted switch-on temperature difference (DT3O), until the adjusted minimum (MN3O) and maximum (MX3O) temperature thresholds of the respective store are reached. S3 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

Store 1 Store 2

S3 / TSTT

Page 13

Display channels

Adjustment channels

Channel Description Factory setting Page Arr x System 2 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

n1MN x Minimum speed R1 30 % 57

n1MX x Maximum speed R1 100 % 57

S MX x Maximum store temperature 75 °C [167 °F] 57 OSEM x Store emergency shutdown option OFF 57

PUM2 x Pump control type R2 OnOF 56

n2MN x* Minimum speed R2 30 % 57

n2MX x* Maximum speed R2 100 % 57

EM x

OCC x Collector cooling option OFF 58 CMX x* Maximum collector temperature 110 °C [230 °F] 58 OSYC x System cooling option OFF 59 DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 59 DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 59 OSTC x Store cooling option OFF 59 OHOL x* Holiday cooling option OFF 59

Collector emergency temperature 130 °C [270 °F] 58 Collector emergency temperature if ODB is activated: 95 °C [200 °F] 58

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 14

Adjustment channels

Channel Description Factory setting Page THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Collector minimum limitation option OFF 60 CMN x* Collector minimum temperature 10 °C [50 °F] 60

Installation Indications, functions and options MessagesCommissioningOperation and function

OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 DT3O s Switch-on temperature difference R2 6.0 K [12.0 °Ra] 56 DT3F s Switch-off temperature difference R2 4.0 K [8.0 °Ra] 56 DT3S s Set temperature difference R2 10.0 K [20.0 °Ra] 56 RIS3 s Rise R2 2 K [4 °Ra] 56 MX3O s Switch-on threshold for maximum temperature 60.0 °C [140.0 °F] 40 MX3F s Switch-off threshold for maximum temperature 58.0 °C [136.0 °F] 40 MN3O s Switch-on threshold for minimum temperature 5.0 °C [40.0 °F] 40 MN3F s Switch-off threshold for minimum temperature 10.0 °C [50.0 °F] 40 ODB x Drainback option OFF 63 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB lling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

s System-specic channel

Page 15

System-specic functions

The following adjustments are used for the specic functions in system 2.

∆T control for the heat exchange between 2 stores

DT3O

Switch-on temperature difference Adjustment range: 1.0 … 20.0 K [2.0 … 40.0°Ra] Factory setting: 6.0 K [12.0 °Ra]

Speed control

DT3S

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

Note

For pump speed control of the heat exchange pump, the operating mode of relay 2 must be set to Auto in the adjustment channel MAN2.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

DT3F Switch-off temperature difference Adjustment range: 0.5 … 19.5 K [1.0 … 39.0°Ra] Factory setting: 4.0 K [8.0 °Ra]

S3 and S4 are used as the reference sensors for this function.

In system 2 the controller is equipped with an additional differential control for heat exchange between two stores. The basic differential function is adjusted using the switch-on (DT3O) and switch-off (DT3F) temperature differences.

When the temperature difference exceeds the adjusted switch-on temperature difference, relay 2 switches on. When the temperature difference falls below the adjusted switch-off temperature difference, relay 2 switches off.

Note

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

RIS3 Rise Adjustment range: 1 … 20 K [2 … 40 °Ra] Factory setting: 2 K [4 °Ra] If the switch-on difference is reached, the pump switches on at full speed for 10 s. Then, the speed is reduced to the minimum pump speed value (n2MN).

If the temperature difference reaches the adjusted set value (DT3S), the pump speed increases by one step (10 %). Each time the difference increases by the adjustable rise value RIS3, the pump speed increases by 10 % until the maximum pump speed of 100% is reached.

Note

The set temperature difference must be at least 0.5 K [1 °Ra] higher than

the switch-on temperature difference.

Page 16

Installation Indications, functions and options MessagesCommissioningOperation and function

PUM2

Pump control type R2 Selection: OnOF, PULS, PSOL, PHEA Factory setting: OnOF 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)

n2MN

Minimum speed R2 Adjustment range: (10) 30 … 100 % Factory setting: 30 %

A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN.

Note

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

n2MX

Maximum speed R2 Adjustment range: (10) 30 … 100 % Factory setting: 100 %

In the adjustment channel n2MX a relative maximum speed for a pump connected can be allocated to the output R2.

Note

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

Page 17

Maximum temperature limitation heat exchange

Minimum temperature limitation heat exchange

InstallationIndications, functions and optionsMessages Commissioning Operation and function

MX3O / MX3F

Maximum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Factory setting: MX3O: 60.0 °C [140.0 °F] MX3F: 58.0 °C [136.0 °F]

S4 is used as the reference sensor for the maximum temperature limitation.

The maximum temperature limitation function provides a maximum temperature setting, usually to reduce scald risk in a store. If MX3O is exceeded, relay 2 is switched off until the temperature at sensor 4 falls below MX3F.

MN3O / MN3F

Minimum temperature limitation Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] Factory setting (only if Arr = 2): MN3O: 5.0 °C [40.0 °F] MN3F: 10.0 °C [50.0 °F]

S3 is used as the reference sensor for the minimum temperature limitation.

The minimum temperature limitation function provides a minimum temperature setting for the heat source in system 2. If the temperature at sensor 3 falls below MN3O, relay 2 is switched off until the temperature at sensor 3 exceeds MN3F.

Both switch-on and switch-off temperature differences DT3O and DT3F are valid for the maximum and minimum temperature limitation.

Page 18

Arrangement 3: Solar system with backup heating

Installation Indications, functions and options MessagesCommissioningOperation and function

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 or heat dump purposes, when the adjusted thermostat switch-on temperature (AH O) is reached. This function can optionally be combined with up to three adjustable time frames.

PWM 1/2

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. If heat quantity measurement (OHQM) is activated, S4 is used as the return sensor.

ModBus

VBus

S3 / TSTT

S4 / TR

Page 19

Display channels

Channel Description Connection terminal Page INIT x* ODB initialisation active - 52 FLL x* ODB lling time active - 52 STAB x* ODB stabilisation in progress - 52 COL x Temperature collector S1 53 TSTB x Temperature store 1 base S2 53 TSTT x Temperature store 1 top S3 53 TDIS s* Thermal disinfection temperature (thermal disinfection) S3 53 S4 x Temperature sensor 4 S4 53 n1 % x Speed R1 R1 54 h P1 x Operating hours R1 R1 55 h P2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 CDIS s* Countdown of monitoring period (thermal disinfection) - 54 SDIS s* Starting time display (thermal disinfection) - 54 DDIS s* Heating period display (thermal disinfection) - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 3 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

n1MN x Minimum speed R1 30 % 57

n1MX x Maximum speed R1 100 % 57

S MX x Maximum store temperature 75 °C [167 °F] 57 OSEM x Store emergency shutdown option OFF 57

EM x

Collector emergency temperature 130 °C [270 °F] 58 Collector emergency temperature if ODB is activated: 95 °C [200 °F] 58

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 20

Adjustment channels

Channel Description Factory setting Page CMN x* Collector minimum temperature 10 °C [50 °F] 60 OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60

Installation Indications, functions and options MessagesCommissioningOperation and function

OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 OHQM x Heat quantity measurement option OFF 62 FMAX x* Maximum ow rate 6.0 l/min 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration 45 % 63 AH O s Switch-on temperature for thermostat 40 °C [110 °F] 21 AH F s Switch-off temperature for thermostat 45 °C [120 °F] 21 t1 O s Thermostat switch-on time 1 00:00 21 t1 F s Thermostat switch-off time 1 00:00 21 t2 O s Thermostat switch-on time 2 00:00 21 t2 F s Thermostat switch-off time 2 00:00 21 t3 O s Thermostat switch-on time 3 00:00 21 t3 F s Thermostat switch-off time 3 00:00 21 ODB x Drainback option OFF 63 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB lling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 OTD s Thermal disinfection option OFF 22 PDIS s* Monitoring period 01:00 22 DDIS s* Heating period 01:00 22 TDIS s* Disinfection temperature 60 °C [140 °F] 22 SDIS s* Starting time 00:00 22 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

Legend:

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

Page 21

System-specic functions

The following adjustments are used for the specic functions in system 3. The channels described are not available in any other systems.

Thermostat function

Backup heating

Use of surplus energy

The thermostat function works independently from the solar operation and can be used for using surplus energy or for backup heating.

• AH O < AH F

thermostat function for backup heating

• AH O > AH F

thermostat function for using surplus energy

The symbol ⓶ will be shown on the display, if the second relay output is activated.

S3 is used as the reference sensor for the thermostat function.

AH O

Thermostat switch-on temperature Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Factory setting: 40.0 °C [110.0°F]

t1 O, t2 O, t3 O

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

t1 F, t2 F, t3 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.

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).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

AH F

Thermostat switch-off temperature Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Factory setting: 45.0 °C [120.0 °F]

Page 22

Thermal disinfection of the upper DHW zone

Installation Indications, functions and options MessagesCommissioningOperation and function

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

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

Factory setting: 01:00

This function helps to contain the spread of Legionella in DHW stores by systematically 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.

TDIS

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

Page 23

Arrangement 4: Solar system with store loading in layers

PWM 1/2

The controller calculates the temperature difference between collector sensor S1 and store sensors S2 and S3. If the difference is larger than or identical to the corresponding adjusted switch-on temperature differences (DT1O / DT2O), the solar pump will be activated by relay 1, and the corresponding store zone will be loaded until the switch-off temperature difference (DT1F / DT2F) or the maximum store

temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of the upper store zone, if possible. In that case, the 3-port valve will be operated by relay 2.

If heat quantity measurement (OHQM) is activated, S4 is used as the return sensor.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

S4 / TR

ModBus

VBus

Page 24

Display channels

Channel Description Connection terminal Page COL x Temperature collector S1 53 TSTB x Temperature store 1 base S2 53

Installation Indications, functions and options MessagesCommissioningOperation and function

TSTT x Temperature store 1 top S3 53 S4 x Temperature sensor 4 S4 53 n % x Speed relay R1 54 hP1 x Operating hours R1 R1 55 hP2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 4 55

PUM1 x Pump control type R1 PSOL 56

nMN x Minimum speed R1 30 % 57

nMX x Maximum speed R1 100 % 57

DT1O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT1F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT1S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS1 x Rise R1 2 K [4 °Ra] 56 S1MX x Maximum store temperature 1 75 °C [167 °F] 56 DT2O x Switch-on temperature difference R2 6.0 K [12.0 °Ra] 56 DT2F x Switch-off temperature difference R2 4.0 K [8.0 °Ra] 56 DT2S x Set temperature difference R2 10.0 K [20.0 °Ra] 56 RIS2 x Rise R2 2 K [4 °Ra] 56 S2MX x Maximum store temperature 2 75 °C [167 °F] 56 EM x Collector emergency temperature 130 °C [270 °F] 56 OCC x Collector cooling option OFF 58 CMX x* Maximum collector temperature 110 °C [230 °F] 58 OSYC x System cooling option OFF 59 DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 59 DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 59

Page 25

Adjustment channels

OHQM x Heat quantity measurement option OFF 62 FMAX x* Maximum ow rate 6.0 l/min 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene glycol) 45 % 63 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

Page 26

Arrangement 5: Solar system with 2 stores and valve logic

PWM 1/2

Installation Indications, functions and options MessagesCommissioningOperation and function

solar pump will be activated by relay 1, and the corresponding store will be loaded

until the switch-off temperature difference (DT1F / DT2F) or the maximum store temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of store 1. If store 2 is being loaded, relay 2 switches the 3-port valve.

If heat quantity measurement (OHQM) is activated, S4 is used as the return sensor.

ModBus

VBus

Store 1 Store 2

S4 / TR

Page 27

Display channels

Channel Description Connection terminal Page

COL x Temperature collector S1 53

TST1 x Temperature store 1 base S2 53

TST2 x Temperature store 2 base S3 53

S4 x Temperature sensor 4 S4 53

n % x Speed relay R1 R1 54

hP1 x Operating hours R1 R1 55

hP2 x Operating hours R2 R2 55

kWh x* Heat quantity in kWh - 54

MWh x* Heat quantity in MWh - 54

TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 5 55

PUM1 x Pump control type R1 PSOL 56

nMN x Minimum speed R1 30 % 57

nMX x Maximum speed R1 100 % 57

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 28

Adjustment channels

Channel Description Factory setting Page OHOL x* Holiday cooling option OFF 59 THOL x* Holiday cooling temperature 40 °C [110 °F] 59

Installation Indications, functions and options MessagesCommissioningOperation and function

OCN x Collector minimum limitation option OFF 60 CMN x* Collector minimum temperature 10 °C [50 °F] 60 OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60 PRIO x Priority 1 60 tLB x Loading break (store sequence control) 2 min 61 tRUN x Circulation runtime (store sequence control) 15 min 61 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 OHQM x Heat quantity measurement option OFF 62 FMAX x* Maximum ow rate 6.0 l/min 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene glycol) 45 % 63 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

Page 29

Arrangement 6: Solar system with 2 stores and pump logic

PWM 1/2

The controller calculates the temperature difference between collector sensor S1 and store sensors S2 and S3. If the difference is larger than or identical to the corresponding adjusted switch-on temperature differences (DT1O / DT2O), one or both solar pumps will be activated by relay 1 and / or relay 2, and the corresponding store will be loaded until the switch-off temperature difference (DT1F / DT2F) or the

maximum store temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of the store selected in the PRIO channel, if possible. If PRIO = 0, both stores will be loaded simultaneously.

Sensor S4 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

ACCESSORY ER712 7630423

R1 R2

ModBus

Store 1

S4 / TSTT

VBus

Store 2

Page 30

Display channels

Channel Description Connection terminal Page COL x Temperature collector S1 53 TST1 x Temperature store 1 base S2 53

Installation Indications, functions and options MessagesCommissioningOperation and function

TST2 x Temperature store 2 base S3 53 S4 x Temperature sensor 4 S4 53 TSTT x* Temperature store top S4 53 n1 % x Speed R1 R1 54 n2 % x Speed R2 R2 54 h P1 x Operating hours R1 R1 55 h P2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 6 55 DT1O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT1F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT1S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS1 x Rise R1 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

n1MN x Minimum speed R1 30 % 57

n1MX x Maximum speed R1 100 % 57

S1MX x Maximum store temperature 1 75 °C [167 °F] 56 OSEM x Store emergency shutdown option OFF 56 DT2O x Switch-on temperature difference R2 6.0 K [12.0 °Ra] 56 DT2F x Switch-off temperature difference R2 4.0 K [8.0 °Ra] 56 DT2S x Set temperature difference R2 10.0 K [20.0 °Ra] 56 RIS2 x Rise R2 2 K [4 °Ra] 56 PUM2 x Pump control type R2 PSOL 56 n2MN x Minimum speed R2 30 % 57

n2MX x Maximum speed R2 100 % 57

S2MX x Maximum store temperature 2 75 °C [167 °F] 56 EM x Collector emergency temperature 130 °C [270 °F] 56

Page 31

Adjustment channels

Channel Description Factory setting Page

OCC x Collector cooling option OFF 58

CMX x* Maximum collector temperature 110 °C [230 °F] 58

OSYC x System cooling option OFF 59

DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 59

DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 59

OSTC x Store cooling option OFF 59

OHOL x* Holiday cooling option OFF 59

THOL x* Holiday cooling temperature 40 °C [110 °F] 59

OCN x Collector minimum limitation option OFF 60

CMN x* Collector minimum temperature 10 °C [50 °F] 60

OCF x Antifreeze option OFF 60

CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60

PRIO x Priority 1 60

tLB x Loading break (store sequence control) 2 min 61

tRUN x Circulation runtime (store sequence control) 15 min 61 DTSE x* Temperature difference spreaded loading 40 K [70 °Ra] 61 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

Page 32

Arrangement 7: Solar system with east-/west collectors and 1 store

PWM 1/2

The controller calculates the temperature difference between collector sensors S1 and S3 and store sensor S2. If the differences are larger than or identical to the adjusted switch-on temperature difference (DT O), one or both solar pumps will

Installation Indications, functions and options MessagesCommissioningOperation and function

be activated by relay 1 and / or relay 2, and the store will be loaded until the switch-

off temperature difference (DT F) or the maximum store temperature (S MX) is reached.

Sensor S4 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

R1 R2

ModBus

VBus

S4 / TSTT

Page 33

Display channels

Channel Description Connection terminal Page

COL1 x Temperature collector 1 S1 53

TST x Temperature store S2 53

COL2 x Temperature collector 2 S3 53

S4 x Temperature sensor 4 S4 53

TSTT x* Temperature store top S4 53

n1 % x Speed R1 R1 54

n2 % x Speed R2 R2 54

h P1 x Operating hours R1 R1 55

h P2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 7 55 DT O x Switch-on temperature difference R1 / R2 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 / R2 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 / R2 10.0 K [20.0 °Ra] 56 RIS x Rise R1 / R2 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

n1MN x Minimum speed R1 30 % 57

n1MX x Maximum speed R1 100 % 57

S MX x Maximum store temperature 75 °C [167 °F] 56 OSEM x Store emergency shutdown option OFF 56

PUM2 x Pump control type R2 PSOL 56

n2MN x Minimum speed R2 30 % 57

n2MX x Maximum speed R2 100 % 57

EM1 x Collector emergency temperature 1 130 °C [270 °F] 56 EM2 x Collector emergency temperature 2 130 °C [270 °F] 56 OCC1 x Collector cooling option collector 1 OFF 58 CMX1 x* Maximum collector temperature 1 110 °C [230 °F] 58 OCC2 x Collector cooling option collector 2 OFF 58

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 34

Adjustment channels

Channel Description Factory setting Page CMX2 x* Maximum collector temperature 2 110 °C [230 °F] 58 OSYC x System cooling option OFF 59

Installation Indications, functions and options MessagesCommissioningOperation and function

DTCO x* Switch-on temperature difference cooling 20.0 K [40.0 °Ra] 59 DTCF x* Switch-off temperature difference cooling 15.0 K [30.0 °Ra] 59 OSTC x Store cooling option OFF 59 OHOL x* Holiday cooling option OFF 59 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN1 x Collector minimum limitation collector 1 OFF 60 CMN1 x* Minimum collector temperature 1 10 °C [50 °F] 60 OCN2 x Collector minimum limitation collector 2 OFF 60 CMN2 x* Minimum collector temperature 2 10 °C [50 °F] 60 OCF1 x Antifreeze option collector 1 OFF 60 CFR1 x* Antifreeze temperature collector 1 4.0 °C [40.0 °F] 60 OCF2 x Antifreeze option collector 2 OFF 60 CFR2 x* Antifreeze temperature collector 2 4.0 °C [40.0 °F] 60 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64 MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

Page 35

Arrangement 8: Solar system with backup heating by solid fuel boiler

PWM 1/2

The controller calculates the temperature difference between collector sensor S1 and store sensor S2. If the difference is larger than or identical to the adjusted switch-on temperature difference (DT O), the solar pump will be 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.

VBus

ModBus

A solid fuel boiler will be controlled by relay 2, if the temperature difference between sensors S4 and S3 is larger than or identical to the adjusted switch-on temperature difference (DT3O), until the adjusted minimum (MN3O) and maximum (MX3O) temperature thresholds of the solid fuel boiler and the store are reached. S3 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

S3 / TSTT

Page 36

Display channels

Channel Description Connection terminal Page INIT x* ODB initialisation active - 52 FLL x* ODB lling time active - 52 STAB x* ODB stabilisation in progress - 52

Installation Indications, functions and options MessagesCommissioningOperation and function

COL x Temperature collector S1 53 TSTB x Temperature store 1 base S2 53 TSTT x Temperature store 1 top S3 53 TSFB x Temperature solid fuel boiler S4 53 n1 % x Speed R1 R1 54 n2 % x Speed R2 R2 54 h P1 x Operating hours R1 R1 55 h P2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels

Channel Description Factory setting Page Arr x System 8 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56

PUM1 x Pump control type R1 PSOL 56

n1MN x Minimum speed R1 30 % 57

n1MX x Maximum speed R1 100 % 57

S MX x Maximum store temperature 75 °C [167 °F] 56 OSEM x Store emergency shutdown option OFF 56 PUM2 x Pump control type R2 OnOF 56 n2MN x* Minimum speed R2 30 % 57

n2MX x* Maximum speed R2 100 % 57

EM x

Collector emergency temperature 130 °C [270 °F] 56 Collector emergency temperature if ODB is activated: 95 °C [200 °F] 56

Page 37

Adjustment channels

Channel Description Factory setting Page OSTC x Store cooling option OFF 59 OHOL x* Holiday cooling option OFF 59 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Collector minimum limitation option OFF 60 CMN x* Collector minimum temperature 10 °C [50 °F] 60 OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62 TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62 DT3O s Switch-on temperature difference R2 6.0 K [12.0 °Ra] 56 DT3F s Switch-off temperature difference R2 4.0 K [8.0 °Ra] 56 DT3S s Set temperature difference R2 10.0 K [20.0 °Ra] 56 RIS3 s Rise R2 2 K [4 °Ra] 56 MX3O s Switch-on threshold for maximum temperature 60.0 °C [140.0 °F] 40 MX3F s Switch-off threshold for maximum temperature 58.0 °C [136.0 °F] 40 MN3O s Switch-on threshold for minimum temperature 60.0 °C [140.0 °F] 40 MN3F s Switch-off threshold for minimum temperature 65.0 °C [150.0 °F] 40 ODB x Drainback option OFF 63 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB lling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 MAN1 x Manual mode R1 Auto 64 MAN2 x Manual mode R2 Auto 64

MB x ModBus slave address 60 65 LANG x Language dE 65 UNIT x Temperature unit °C 65 RESE x Reset - back to factory settings 65 ######## Version number

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Legend:

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

Page 38

System-specic functions

The following adjustments are used for the specic functions in system 8.

∆T control for the backup heating by a solid fuel boiler

Installation Indications, functions and options MessagesCommissioningOperation and function

DT3O

Switch-on temperature difference Adjustment range: 1.0 … 20.0 K [2.0 … 40.0°Ra] Factory setting: 6.0 K [12.0 °Ra]

S4 and S3 are used as the reference sensors for this function.

In system 8 the controller is equipped with an additional differential control for heat exchange from a solid fuel boiler (e. g. pellet stove). The basic differential function is adjusted using the switch-on (DT3O) and switch-off (DT3F) temperature differences.

DT3F

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

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

Speed control

DT3S

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

Note

For pump speed control of the heat exchange pump, the operating mode of relay 2 must be set to Auto in the adjustment channel MAN2.

RIS3

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

Note

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

If the switch-on difference is reached, the pump switches on at full speed for 10 s. Then, the speed is reduced to the minimum pump speed value (n2MN).

Page 39

Minimum speed

PUM2

Pump control type R2 Selection: OnOF, PULS, PSOL, PHEA Factory setting: OnOF 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)

n2MN

Minimum speed R2 Adjustment range: (10) 30 … 100 Factory setting: 30

A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN.

Note

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

Maximum speed

n2MX

Maximum speed R2 Adjustment range: (10) 30 … 100 % Factory setting: 100 %

In the adjustment channel n2MX a relative minimum speed for a pump connected can be allocated to the output R2.

Note

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

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 40

Maximum temperature limitation solid fuel boiler

Installation Indications, functions and options MessagesCommissioningOperation and function

Minimum temperature limitation solid fuel boiler

MX3O / MX3F

Maximum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Factory setting: MX3O: 60.0 °C [140.0 °F] MX3F: 58.0 °C [136.0 °F]

S3 is used as the reference sensor for the maximum temperature limitation.

MN3O / MN3F

Minimum temperature limitation Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] Factory setting (only if Arr = 8): MN3O: 60.0 °C [140.0 °F] MN3F: 65.0 °C [150.0 °F]

S4 is used as the reference sensor for the minimum temperature limitation.

The minimum temperature limitation function provides a minimum temperature setting for the solid fuel boiler in system 8. If the temperature at sensor 4 falls below MN3O, relay 2 is switched off until the temperature at sensor 4 exceeds MN3F.

Both switch-on and switch-off temperature differences DT3O and DT3F are valid for the maximum and minimum temperature limitation.

Page 41

Arrangement 9: Solar system with heating-circuit return preheating

PWM 1/2

Heating-circuit return preheating will be activated by relay 2, if the temperature difference between sensors S3 and S4 is larger or identical to the adjusted switch-on temperature difference (DT3O). For this purpose, relay 2 controls the 3-port valve.

S3 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

ModBus

VBus

S3 / TSTT

Page 42

Display channels

Channel Description Connection terminal Page INIT x* ODB initialisation active - 52 FLL x* ODB lling time active - 52

Installation Indications, functions and options MessagesCommissioningOperation and function

STAB x* ODB stabilisation in progress - 52 COL x Temperature collector S1 53 TSTB x Temperature store 1 base S2 53 TSTT x Temperature store 1 top S3 53 TRET x Temperature heating circuit S4 53 n % x Speed relay R1 R1 54 hP1 x Operating hours R1 R1 55 hP2 x Operating hours R2 R2 55 kWh x* Heat quantity in kWh - 54 MWh x* Heat quantity in MWh - 54 TIME x Time - 55

Adjustment channels Channel Description Factory setting Page Arr x System 9 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56 PUM1 x Pump control type R1 PSOL 56 nMN x Minimum speed R1 30 % 57 nMX x Maximum speed R1 100 % 57 S MX x Maximum store temperature 75 °C [167 °F] 56 OSEM x Store emergency shutdown option OFF 56

EM x

Collector emergency temperature 130 °C [270 °F] 56 Collector emergency temperature if ODB is activated: 95 °C [200 °F] 56

Page 43

Adjustment channels

Channel Description Factory setting Page

OSTC x Store cooling option OFF 59

OHOL x* Holiday cooling option OFF 59

THOL x* Holiday cooling temperature 40 °C [110 °F] 59

OCN x Collector minimum limitation option OFF 60

CMN x* Collector minimum temperature 10 °C [50 °F] 60

OCF x Antifreeze option OFF 60

CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60

OTC x Tube collector option OFF 62

TCST x* OTC starting time 07:00 62

TCEN x* OTC ending time 19:00 62

TCRU x* OTC runtime 30 s 62

TCIN x* OTC standstill interval 30 min 62

DT3O s Switch-on temperature difference R2 6.0 K [12.0 °Ra] 56

DT3F s Switch-off temperature difference R2 4.0 K [8.0 °Ra] 56

ODB x Drainback option OFF 63

tDTO x* ODB switch-on condition - time period 60 s 64

tFLL x* ODB lling time 5.0 min 64

tSTB x* ODB stabilisation time 2.0 min 64

MAN1 x Manual mode R1 Auto 64

MAN2 x Manual mode R2 Auto 64

MB x ModBus slave address 60 65

LANG x Language dE 65

UNIT x Temperature unit °C 65

RESE x Reset - back to factory settings 65

######## Version number

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Legend:

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

Page 44

Arrangement 10: Standard solar system with heat dump

PWM 1/2

Installation Indications, functions and options MessagesCommissioningOperation and function

1, and the store will be loaded until the switch-off temperature difference (DT F) or the maximum store temperature (S MX) is reached.

If the collector maximum temperature (CMX) is reached, the solar pump will be activated by R1 and the 3-port valve by R2 in order to divert excess heat to a heat sink. For safety reasons, excess heat dump will only take place as long as the store temperature is below the non-adjustable shutdown temperature of 95 °C [200 °F].

Sensors S3 and S4 can optionally be connected. S3 can optionally be used as the reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S4 is used as the return sensor.

ModBus

VBus

S4 / TFL

S3 / TSTT

S4 / TR

Page 45

Display channels

Channel Description Connection terminal Page

COL x Temperature collector S1 53

TST x Temperature store S2 53

S3 x Temperature sensor 3 S3 53

TSTT x* Temperature store top S3 53

S4 x Temperature sensor 4 S4 53

n % x Speed relay R1 R1 54

h P1 x Operating hours R1 R1 55

h P2 x Operating hours R2 R2 55

kWh x* Heat quantity in kWh - 54

MWh x* Heat quantity in MWh - 54

TIME x Time - 55

Adjustment channels Channel Description Factory setting Page Arr x System 10 55 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 56 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 56 DT S x Set temperature difference R1 10.0 K [20.0 °Ra] 56 RIS x Rise R1 2 K [4 °Ra] 56 PUM1 x Pump control type R1 PSOL 56 nMN x Minimum speed R1 30 % 57 nMX x Maximum speed R1 100 % 57 S MX x Maximum store temperature 75 °C [167 °F] 56 OSEM x Store emergency shutdown option OFF 56 EM x Collector emergency temperature 130 °C [270 °F] 56 CMX s Maximum collector temperature 110 °C [230 °F] 58 OCN x Collector minimum limitation option OFF 60 CMN x* Collector minimum temperature 10 °C [50 °F] 60 OCF x Antifreeze option OFF 60 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 60 OTC x Tube collector option OFF 62 TCST x* OTC starting time 07:00 62 TCEN x* OTC ending time 19:00 62

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 46

Adjustment channels

Channel Description Factory setting Page TCRU x* OTC runtime 30 s 62 TCIN x* OTC standstill interval 30 min 62

Installation Indications, functions and options MessagesCommissioningOperation and function

Legend:

Symbol Description

x Channel is available

x* Channel is available, if the corresponding option is activated.

Page 47

3 Application examples

DDTh

Sol Plus

F-67580 Mertzwiller

Article/Artikel 7630422

PWM 1/2

ModBus

Soft version 2.00

Serial number

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

345678910

IP 20

1 (1) A 240 V~ 1 (1) A 240 V~

100 ... 240 V~

50-60 Hz

NR2

14131212

MODBUS CABLE

COLIS ER 713 7630424

T2A

SOLARFIRST function If the solar pump switches on, the Sol Plus controller will send a signal to the boiler

2019

171615

controller. The boiler controller will then reduce the set temperature of DHW heating by 0 - 30 K (adjustable).

Result: Priority of solar heat If there is not enough solar energy, the solar pump will switch off and the boiler is

InstallationIndications, functions and optionsMessages Commissioning Operation and function

set to its “normal” operating mode. The solar controller and the boiler controller work together in order to increase

the solar yield and to decrease gas and / or oil consumption. Only with standard solar system 1.

2 12 12 12 1 2 1

2 1

S DEP B

2 1

S AMB A

S ECSS EXTS DEP C

S SYST + TA -

4 3 2 12 1

2 1

S AMB C

S AMB B

+ -

0-10V

TS +B AB

SCU

Boiler

AGC GSCR CALORA TOWER

Page 48



4 Operation and function

4.1 Buttons

Installation Indications, functions and options MessagesCommissioningOperation and function

forwards (+)

Ⓢ (selection /

adjustment mode)

backwards (-)

The controller is operated via the 3 push buttons below the display. Button 1 (+) is used for scrolling forwards through the menu and increasing

adjustment values. Button 2 (-) is used for scrolling backwards through the menu and reducing adjustment values. Button 3 (OK) is used for selecting channels and

conrming adjustments.

During normal operation, display channels will be displayed.

Î In order to scroll between display channels, press buttons 1 and 2.

Access to adjustment channels:

Î Use button 1 in order to scroll to the last display channel, then press and hold

down button 1 for approx. 2 s.

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

Î Press button 3 in order to select an adjustment channel.

Ⓢ starts ashing.

Î Adjust the desired value with buttons 1 and 2. Î Briey press button 3.

Ⓢ permanently appears, the adjusted value has been saved.

5 System-Monitoring-Display

System-Monitoring-Display



The System-Monitoring-Display consists of 3 blocks: channel display, tool bar and system screen.

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 16-segment display, values are displayed.

Tool bar

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



Page 49

Permanently

shown

⓵ ⓶ ☼

⓵ ☼ ⓵ ☼

⓵ + ☼

☼ ⚠

⓵ + ☼ ⚠

❄

⓵ / ⓶ ❄ ☛ + ⓵ ⚠ ☛ + ⓶ ⚠

☛ ⚠ ☍ ⚠

Flashing Status indications:

Relay 1 active

Relay 2 active

Maximum store temperature exceeded

⚠ + ☼

⚠

❄

Store emergency shutdown active

Collector emergency shutdown active

Collector cooling active

System cooling active

Store cooling active

Holiday cooling option activated

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

System screen

The system selected is indicated in the System-Monitoring-Display. It consists of several system component symbols which are – depending on the current status of

the system – either ashing, permanently shown or not indicated.

Collectors

with collector sensor

Temperature sensor

InstallationIndications, functions and optionsMessages Commissioning Operation and function

5.1 Flashing codes

• Pumps are ashing when the corresponding relay is switched on

• Sensor symbols are ashing, if the corresponding sensor display channel is se- lected

• Sensors are ashing quickly in the case of a sensor fault

• Burner symbol is ashing if the backup heating is active

Store with heat exchanger

3-port valve

Only the ow direction or

current switching position is indicated.

Heating circuit

Pump

Backup heating

with burner symbol

Page 50

6 Commissioning

forwards (+)

Installation Indications, functions and options MessagesCommissioningOperation and function

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

Ⓢ (selection /

adjustment mode)

backwards (-)

Commissioning

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. Arrangement

Î Adjust the desired system.

For a detailed description of the systems to choose from, see page 9.

Arr

System selection Adjustment range: 1 … 10 Factory setting: 1

If the system selection is changed later on, any previous adjustments which have been made in the other channels will be lost. Therefore, changing the system is always followed by a security enquiry.

Page 51

Only conrm the security enquiry if you are

sure that you wish to change the system selection.

Security enquiry:

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

button 3.

5. Maximum store temperature

Î Adjust the desired maximum store temperature.

S MX / S1MX / S2MX Maximum store temperature Adjustment range: 4 … 95 °C [40 … 200 °F] Arr 10: 4 … 90 °C [40 … 190 °F] Factory setting: 75 °C [167 °F]

Note

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

6. Pump control type

Î Adjust the pump control type.

PUM1 / PUM2

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)

CommissioningCommissioning

7. Minimum speed

Î Adjust the minimum speed for the corresponding

pump.

nMN, n1MN, n2MN

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.

8. Maximum speed

Î Adjust the maximum speed for the corresponding

pump.

nMX, n1MX, n2MX

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.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 52

Commissioning

Conrmation

Completing the commissioning menu

Installation Indications, functions and options MessagesCommissioningOperation and function

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 3.

The controller is then ready for operation with the adjustments made for the system selected .

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 48).

7 Channel overview

7.1 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.

Page 53

Display of collector temperatures

Display of sensors 3 and 4

COL, COL1, COL2

Collector temperature Display range: -40 … +260 °C [-40 … +500 °F]

Indicates the collector temperatures.

• COL : Collector temperature (1-collector system)

• COL1 : Collector temperature 1

• COL2 : Collector temperature 2

Display of store temperatures

TST, TSTB, TSTT, TST1, TST2, TDIS

Store temperatures Display range: -40 … +260 °C [-40 … +500 °F] Indicates the store temperatures.

• TST : Store temperature (1-store system)

• TSTB : Store temperature base

• TSTT : Store temperature top

• TST1 : Store temperature 1 (2-store system)

• TST2 : Store temperature 2 (2-store system)

• TDIS : Thermal disinfection temperature

(Arr = 3 only; replaces TSTT if, during thermal disinfection, the heating period DDIS is active)

S3, S4

Sensor temperatures Display range: -40 … +260 °C [-40 … +500 °F] Indicates the current temperature at the corresponding additional sensor (without control function).

• S3 : Temperature at sensor 3

• S4 : Temperature at sensor 4

Note

S3 and S4 will only be indicated if the temperature sensors are connected to the corresponding terminals.

Display of further temperatures

TFSB, TRET, TFL, TR

Further measured temperatures Display range: -40 … +260 °C [-40 … +500 °F] Indicates the current temperature at the corresponding sensor. The display of these temperatures depends on the system selected.

• TFSB : Temperature solid fuel boiler

• TRET : Temperature heating circuit return preheating

• TFL : Temperature ow

• TR : Temperature return

Note

TFL / TR will be indicated only if the heat quantity measurement option (OHQM) has been activated.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 54

Display of ow rate

Installation Indications, functions and options MessagesCommissioningOperation and function

l/h

Flow rate Display range: depending on the sensor type used

The display range depends on the sensor type previously selected.

Display of current pump speed

n %, n1 %, n2 %

Current pump speed Display range: 30 … 100 % Indicates the current pump speed of the corresponding pump.

• n % : Current pump speed (1-pump system)

• n1 % : Current pump speed pump 1

• n2 % : Current pump speed pump 2

kWh/MWh

Heat quantity in kWh / MWh Display channel Indicates the energy gained in heat quantity – only available if heat quantity measurement (OHQM) is activated.

The ow rate value is used for calculating the heat quantity supplied (see page

62). 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 3 for approx. 2 s.

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

Î In order to nish the reset process, press button 3.

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

CDIS

Countdown 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 heating period Display range: 00:00 … 24:00 (hh:mm)

If the thermal disinfection option (OTD ) is activated and the heating period is in progress, the remaining time is displayed as CDIS (in hours and minutes), counting backwards.

Page 55

TIME

Indicates the current clock time.

Î In order to adjust the hours, press button 3 for approx. 2 s. Î Set the hours by pressing buttons 1 and 2. Î In order to adjust the minutes, press button 3. Î Set the minutes by pressing buttons 1 and 2. Î In order to save the adjustments, press button 3.

Operating hours counter

h P / h P1 / h P2

Operating hours counter Display channel

The operating hours counter accumulates the operating hours of the corresponding relay (h P / h P1 / h P2). 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 3 for approx. 2 s.

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

Î In order to nish the reset process, press button 3.

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

7.2 Adjustment channels

System selection

Arr

System selection. Adjustment range: 1 … 10 Factory setting: 1

In this channel, a pre-dened system can be selected. Each system has a set of

pre-programmed settings that can be individually changed. If the system selection is changed later on, any previous adjustments which have

been made in the other channels will be lost. Therefore, changing the system is always followed by a security enquiry.

Only conrm the security enquiry if you are sure that you wish to change

the system selection.

Security enquiry:

Î In order to conrm the security enquiry, press button 3.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 56

∆T control

Installation Indications, functions and options MessagesCommissioningOperation and function

Speed control

DT O / DT1O / DT2O / DT3O

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 / DT1F / DT2F / DT3F

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 systems:

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.

DT S / DT1S / DT2S / DT3S

Set temperature difference Adjustment range:

1.5 … 30.0 K [3.0 … 60.0 °Ra] Factory setting: 10.0 K [20.0 °Ra]

RIS / RIS1 / RIS2 / RIS3

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 / MAN2).

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.

PUM1 / PUM2

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

Page 57

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, n1MN, n2MN

Minimum speed Adjustment range: (10) 30 … 100 % Factory setting: 30 % nMN, n1MN, if ODB is activated: 50 % In the adjustment channels nMN, n1MN and n2MN a relative minimum pump speed for connected pumps can be allocated to the outputs R1 and R2.

Note

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

nMX, n1MX, n2MX

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

In the adjustment channel n1(2)MX a relative maximum speed for connected pumps can be allocated to the outputs R1 and R2.

Note

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

Maximum store temperature

S MX / S1MX / S2MX

Maximum store temperature Adjustment range: 4 … 95 °C [40 … 200 °F] Arr 10: 4 … 90 °C [40 … 190 °F] Factory setting: 75 °C [167 °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-adjusta ble 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: ON, OFF 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, store 1 will be blocked and loading will be stopped until the temperature falls below 90 °C.

Note

Sensor S3 is used as the reference sensor in systems 1, 2, 3, 8, 9 and 10. In the systems 6 and 7, sensor S4 is used as the reference sensor. This option is not available in system layouts 4 and 5, in the system layouts 6 and 7 it will only be available if heat quantity measurement is deactivated.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 58

Collector limit temperature

Collector emergency shutdown

Installation Indications, functions and options MessagesCommissioningOperation and function

EM / EM1 / EM2

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 / R2) 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 will change to 80 ... 120 °C [170 ... 250 °F]. The factory setting in that case is 95 °C [200 °F].

WARNING!

Risk of injury! Risk of system damage by pressure surge!

If water is used as the heat transfer uid in pressureless systems,

water will boil at 100 °C

[212 °F].

Î In pressureless systems with water as the heat trans-

fer uid, do not set the collector limit temperature

higher than 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 notes are valid for all three cooling functions:

Note

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

Note

In 2-store-systems, the cooling functions will only affect store 1, or the base area of the store respectively.

Collector cooling

OCC / OCC1 / OCC2

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

CMX / CMX1 / CMX2

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.

Note

In system 10, the parameter CMX is available without the OCC function. In system 10, CMX is used for setting the activation temperature for the heat dump function. No other switch-on condition is needed in that case.

Page 59

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 / S1MX) 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 / S1MX) 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 / S1MX) 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).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 60

Collector minimum limitation

Installation Indications, functions and options MessagesCommissioningOperation and function

OCN / OCN1 / OCN2

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

CMN / CMN1 / CMN2

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 / R2) will only be 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 that case, the collector temperature may fall below CMN.

Antifreeze function

OCF / OCF1 / OCF2

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

CFR / CFR1 / CFR2

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 only 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.

Priority logic

Note

Priority logic can be used in 2-store system only (Arr = 4, 5, 6).

PRIO

Priority Adjustment range: SE 1, SE 2, Su 1, Su 2, 0, 1, 2 Factory setting: Arr 4: 2, Arr 5, 6: 1

If a 2-store system has been selected, the priority logic determines how the heat is divided between the stores. Different types of priority logic are adjustable:

• spreaded loading (SE 1 and SE 2)

• successive loading (Su 1 and Su 2)

• parallel loading (0)

• store sequence control (1 and 2) If priority PRIO SE 1 or SE 2 (only available in Arr 6) is adjusted, the subordinate

store will be loaded in parallel to the priority store if the temperature difference between the collector and the priority store (store 1 for SE 1, store 2 for SE 2) exceeds the adjusted value DTSE and the subordinate store has not reached its maximum temperature. Parallel loading will stop as soon as the temperature difference between the collector and the priority store falls by 2 K [4 °Ra] below DTSE or the subordinate store reaches its maximum temperature. If priority PRIO Su 1 or Su 2 is adjusted, the stores are loaded successively. The subordinate store will only be loaded if the priority store (store 1 for Su 1, store 2 for Su 2) has reached its adjusted maximum temperature (S1MX or S2MX).

Page 61

If priority PRIO 0 is adjusted and the switch-on conditions for both stores are

fullled, the stores are loaded in parallel (Arr 6) or in store sequence control (Arr

4, 5) respectively, beginning with the store with the lowest temperature. In store sequence control, solar loading will switch from one store to the other in steps of 5 K [10 °Ra] temperature difference between the stores. If PRIO 1 / 2 is adjusted, store sequence control will be activated (see below) with the corresponding store as the priority store.

Note

If the priority is set to PRIO Su 1 or Su 2, solar loading of the subordinate store will be stopped at once if the temperature in the priority store (store 1 for Su 1, store 2 for Su 2) falls below the adjusted maximum temperature. If, in that case, the temperature difference between the priority

store and the collector is not sufciently high, solar loading will be stopped

completely.

Spreaded loading temperature difference

(only available if PRIO is set to SE 1 or SE 2)

DTSE

Temperature difference spreaded loading Adjustment range: 20 … 90 K [40 … 160 °Ra] Factory setting: 40 K [70 °Ra]

Store sequence control (only available if priority is set to PRIO SE 1, SE 2, 1 or 2)

tLB

Loading break store sequence control Adjustment range: 1 … 30 min Factory setting: 2 min

tRUN

Circulation runtime store sequence control Adjustment range: 1 … 30 min Factory setting: 15 min

Store sequence control will be activated when PRIO is set to SE 1, SE 2, 1 or 2. If the priority store cannot be loaded, the subordinate store will be checked. If useful heat can be added to the subordinate store, it will be loaded for the circulation time (tRUN – factory setting 15 min). After this, the loading process stops and the controller monitors the increase in collector temperature during the loading break time tLB. If it increases by 2 K [4° Ra], the break time timer starts again to allow the collector to gain more heat. If the collector temperature does not increase suf-

ciently, the subordinate store will be loaded again for the tRUN runtime as before. As soon as the switch-on condition of the priority store is fullled, it will be loaded.

If the switch-on condition of the priority store is not fullled, loading of the subor-

dinate store will be continued. If the priority store reaches its maximum temperature, store sequence control will not be carried out.

If store sequence control is active and the system switches to load the priority store, the parameter tLB also acts as a stabilisation time, during which the switchoff condition DT F is ignored while the system operation is stabilising.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 62

Tube collector function

Installation Indications, functions and options MessagesCommissioningOperation and 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 be 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

In system 7 both collectors are operated independently from each other by means of this function. If the store is being loaded by one collector, the other one is nevertheless operated.

Note

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

tSTB.

WARNING!

Risk of injury! Risk of system damage by pressure surge!

If a drainback system is lled due to the tube collector function

and the heat transfer medium enters very hot collectors, pressure surges can occur

Î If a pressure-less drainback system is used, TCST and

TCEN must be adjusted such that the system will not

be lled during times of potentially strong irradiation!

Heat quantity measurement

OHQM

Heat quantity measurement option Adjustment range: OFF / ON Factory setting: OFF

If OHQM is activated, the heat quantity gained can be calculated and displayed.

Heat quantity measurement with xed ow rate value

The heat quantity balancing (estimation) uses the difference between the ow and return 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%.

Note

Heat quantity measurement is not possible in systems with 2 solar pumps.

Page 63

FMAX

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

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 ratio

in Vol-% (MED% is not indicated when MEDT 0 or 3 is used.) Adjustment range: 20 … 70 % Factory setting: 45 %

Note

If the system 10 has been selected and OHQM is activated, heat quantity measurement will be interrupted when the 3-port valve switches to the heat dump.

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.

Note

The drainback option is only available in system with one store and one collector (Arr 1, 2, 3, 8 and 9).

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 option ODB is activated, the factory settings of the parameters nMN / n1MN, 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.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 64

Time period – switch-on condition

Installation Indications, functions and options MessagesCommissioningOperation and function

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 parameter tFLL is used for adjusting the lling time. 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.

Booster function

OBST option

Booster function Adjustment range: ON / OFF Factory setting: OFF

This function is used for switching on a second pump when lling the solar system. When solar loading starts, R2 is energised in parallel to R1. After the lling time has

elapsed, R2 switches off.

Note

The booster function is available in system 1 only. The booster function will only be available if the drainback option has been activated.

Operating mode

MAN1 / MAN2

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

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

Note

Always adjust the operating mode back to Auto when the control and service work is completed. Normal operation is not possible in manual mode.

Page 65

ModBus slave address

Unit

Adjustment range: 60 … 64 in steps of: 1 Factory setting: 60

In this channel, the ModBus slave address can be adjusted. Do not change the setting. The solar controller communicates with the DeDietrich boiler controller via this

channel, thus making it possible to use the “SOLARFIRST” function. This function gives priority to solar heat over gas or fuel for DHW heating. In order to use this function, connect the ModBus cable to the controller and adjust the correction value for “SOLARFIRST” to 0 to 30 °C.

Language

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

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.

Reset

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 3 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 3

Note

After a reset, the commissioning menu will start again (see page 50).

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 66

8 Troubleshooting

If a malfunction occurs, the display symbols will indicate an error code:

The symbol☍ is indicated on the display and the symbol ⚠ is ashing.

Installation Indications, functions and options MessagesCommissioningOperation and function

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

- 88.8888.8

Cable is broken. Check the

Short circuit. Check the cable.

cable.

Disconnected Pt1000 temperature sensors can be checked with an ohmmeter. Please check the resistance values correspond with the table.

°C °F Ω °C °F Ω

-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

Resistance values of Pt1000 sensors

The display is permanently off.

If the display 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

Check the supply line and reconnect it.

yes

the spare fuse) becomes accessible when the cover is removed.The fuse can then be replaced.

fuse T4A

Page 67

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.

Pump starts up very late.

Air or gas bubbles in the system?

no yes

Is the collector circuit blocked at the dirt trap?

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.

yes

Clean dirt trap

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

Temperature difference at the con-

troller too small?

no yes

Change ∆Ton and ∆Toff correspondingly.

Wrong position of collector sensors?

yes

Mount the collector sensor at solar

ow (warmest collector output); use

immersion sleeve of the respective

Plausibility control of the option

collector.

tube collector special function

o.k.

Switch-on temperature difference ∆Ton too large?

no yes

Change ∆Ton and ∆Toff correspondingly.

Non-ideal position of the collector

sensor (e. g. atscrew sensor instead

of sensor in immersion sleeves).

yes

Activate tube collector function if necessary.

o.k.

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

Collector circuit pump defective?

yes

Check / replace it

Heat exchanger calcied?

yes

Decalcify it

Heat exchanger blocked?

yes

Clean it

Heat exchanger too small?

yes

Replace with correctly sized one.

InstallationIndications, functions and optionsMessages Commissioning Operation and function

Page 68

Stores cool down at night

Collector circuit pump runs during

the night?

Installation Indications, functions and options MessagesCommissioningOperation and function

no yes

Collector temperature at night is higher than the outdoor temperature.

no yes

Sufcient store insulation?

yes no

Check controller

Check the non-return valves in the

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

Increase insulation.

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

yes no

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 is activated,

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

Clean or replace it.

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

Insulation close enough to the store?

yes no

Are the store connections insulated?

yes no

Warm water outow upwards?

no yes

Does the DHW circulation run for a very long time?

no yes

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

yes no

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?

no yes

o.k.

Use the circulation pump with timer and switch-off thermostat (ener-

gy-efcient circulation).

Check whether the pumps of the after-heating circuit run at night; check whether the non-return valve is defective; problem solved?

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

Is the display working?

yes no

Does the pump start up in manual

operation?

yes

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

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

Is the pump current enabled by the controller?

Controller fuse ok?

no yes

yes

Is the pump stuck?

yes

Turn the pump shaft using a screwdriver; now passable?

Replace fuse

Pump is defective - replace it.

Controller might be defective -

replace it.

Page 69

9 Accessories

Sensors

SP10 Overvoltage

protection device

SD3 Smart Display /

GA3 Large Display

AM1 Alarm Module

DL2 Datalogger

VBus® / USB & VBus® / LAN

interface adapters

DL3 Datalogger

Page 70

9.1 Sensors and measuring instruments

Temperature sensors

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

sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clipon sensors, also as complete sensors with immersion sleeve. Order information can be found in our catalogue and on our Web site.

SP10 Overvoltage protection device

In order to avoid overvoltage damage at collector sensors (e.g. caused by local lightning storms), we recommend installing the overvoltage protection SP10.

9.2 VBus

accessories

SD3 Smart Display

The Smart Display is designed for simple connection to controllers with VBus is used for visualising data issued by the controller: collector temperature, store

temperature and energy yield of the solar thermal system. The use of high-efciency LEDs and lter glass assures a high optical brilliance. An additional power supply is

not required.

GA3 Large display module

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 via one 6-digit and two 4-digit 7-segment-displays. An easy connection to all controllers with VBus printed with a light-resistant UV-lacquering. The universal VBus® allows the parallel connection of 8 large displays as well as additional VBus

is possible. The front plate is made of antireective lterglass and is

modules.

AM1 Alarm Module

The AM1 Alarm Module is designed to signal system failures. It is to be connected to the VBus

of the controller and issues an optical signal via the red LED if a failure has occurred. The AM1 also has a relay output, which can e. g. be connected to a building management system (BMS). Thus, a collective error message can be issued in the case of a system failure. The AM1 Alarm module ensures that occurring failures can be immediately recog-

nised and repaired, even if the system and the controller are difcult to access or

located in a remote place. Thus, the reliability and the stable yield of the system are ensured.

DL2 Datalogger

This additional module enables the acquisition and storage of large amounts of data (such as measuring and balance values of the solar system) over a long period of

time. The DL2 can be congured and read-out with a standard Internet browser

via its integrated web interface. For transmission of the data stored in the internal memory of the DL2 to a PC, an SD card can be used. The DL2 is appropriate for all controllers with VBus

. It can be connected directly to a PC or router for remote access and thus enables comfortable system monitoring for yield monitoring or for diagnostics of faults.

DL3 Datalogger

Be it solar thermal, heating or DHW heat exchange controllers – with the DL3 you

. It

can easily and conveniently log system data of up to 6 controllers. Get a comprehen sive overview of all controllers connected with the large full graphic display. Transfer data with an SD memory card, or use the LAN interface to view and process data on your PC.

9.3 Interface adapters

VBus

/ USB interface adapter

The VBus

/ USB interface adapter is the interface between the controller and a personal computer. With its standard mini USB port it enables a fast transmission of system data for processing, visualising and archiving as well as the parametrisation of the controller via the VBus®. The ServiceCenter software is included.

/ 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. Thus, controller access, system parameterisation and data charting can be effected from every workstation of the network. The VBus® / LAN interface adapter is suitable for all controllers equipped with a VBus®. The ServiceCenter software is included.

Page 71

10 Index

Accessories................................................................................................................... 69, 70

Antifreeze function ........................................................................................................... 60

backup heating ................................................................................................................... 21

Booster function ............................................................................................................... 64

Collector cooling .............................................................................................................. 58

Collector emergency shutdown .................................................................................... 58

Commissioning .................................................................................................................. 50

Cooling function ................................................................................................................ 58

∆T control .......................................................................................................................... 56

Data communication / Bus ................................................................................................. 7

Displays ................................................................................................................................ 48

Drainback option .............................................................................................................. 63

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

Flow rate ....................................................................................................................... 54, 63

Heat quantity measurement ........................................................................................... 62

Holiday ................................................................................................................................. 59

Language .............................................................................................................................. 65

Minimum collector temperature ................................................................................... 60

Monitoring-Display ........................................................................................................... 48

Mounting ............................................................................................................................... 6

Operating mode ................................................................................................................ 64

Priority logic ....................................................................................................................... 60

Return preheating ............................................................................................................. 53

Speed control ..................................................................................................................... 56

Spreaded loading ............................................................................................................... 61

Store cooling ...................................................................................................................... 59

Store sequence control ................................................................................................... 61

System overview ................................................................................................................. 8

System screen .................................................................................................................... 49

Technical data ....................................................................................................................... 5

Thermal disinfection ......................................................................................................... 22

Thermostat function ........................................................................................................ 21

Time ..................................................................................................................................... 50

Troubleshooting ................................................................................................................. 66

Page 72

Distributed by:

REMEHA Sol Plus User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Overview

2 Installation

2.1 Mounting

2.2 Electrical connection

2.3 PWM outputs

2.4 Data communication / Bus

2.6 Systems

3 Application examples

4 Operation and function

4.1 Buttons

5 System-Monitoring-Display

5.1 Flashing codes

6 Commissioning

7 Channel overview

7.1 Display channels

7.2 Adjustment channels

8 Troubleshooting

9 Accessories

9.1 Sensors and measuring instruments

9.3 Interface adapters

10 Index