STIEBEL ELTRON SOM10 User Manual

Download

SOM 10

Manual for the specialized craftsman

Mounting Electrical connection Operation Troubleshooting Application examples

Simply the Best

*49014260*

49014260

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

en-US/CA

Manual

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!

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 qualied per-

sonnel named by the manufacturer.

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.

Information about the product

Proper usage

The solar controller is designed for use in solar thermal systems and heating systems in compliance with

the technical data specied in this manual.

Improper use excludes all liability claims.

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 elec-

tromagnetic elds.

Subject to technical change. Errors excepted.

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-threa- tening injury, can occur.

• ATTENTION means that damage to the appli- ance can occur.

Note

Notes are indicated with an information symbol.

Î Arrows indicate instruction steps that should be

carried out.

SOM 10

Contents

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

1.1 Optional functions....................................................5

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

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

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

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

2.4 SD card slot ...............................................................8

3 Step-by-step parameterization ................ 8

4 Operation and function ............................ 9

4.1 Buttons .......................................................................9

4.2 Selecting menu points and adjusting values .......9

4.3 Menu structure .......................................................11

5 Initial commissioning .............................. 12

5.1 Basic systems and hydronic variants ..................14

5.2 Overview of relay and sensor allocation ..........15

6 Main menu ............................................... 30

7 Status ........................................................ 30

7.1 Solar...........................................................................30

7.2 Arrangement ...........................................................30

7.3 Heating ......................................................................30

7.4 Messages ...................................................................30

7.5 Meas. / Balance values ............................................31

7.6 Service ......................................................................31

8 Solar .......................................................... 31

8.1 Basic solar settings .................................................31

8.2 Solar optional functions ........................................34

8.3 Solar expert menu .................................................47

9 Arrangement ........................................... 47

9.1 Optional functions..................................................47

10 Heating ..................................................... 59

10.1 Demands ..................................................................60

10.2 Heating circuits .......................................................60

10.3 Optional functions..................................................64

11 HQM ......................................................... 67

12 Basic settings ........................................... 69

13 SD card ..................................................... 69

14 Manual mode ........................................... 71

15 User code ................................................. 72

16 In- / Outputs ............................................. 72

16.1 Modules ....................................................................72

16.2 Inputs .........................................................................73

16.3 Outputs ....................................................................74

16.4 PWM-Proles ..........................................................75

17 Troubleshooting ....................................... 76

18 Accessories .............................................. 80

18.1 Sensors and measuring instruments...................80

18.2 VBus

accessories ...................................................81

18.3 Interface adapters ...................................................81

19 Index ......................................................... 82

1 Overview

• Extra large graphic display

• 14 relay outputs

• 12 temperature sensors

(system-dependent)

• 4 inputs for Grundfos Direct Sensors™ (2 × analog, 2 × digital)

• 4 PWM outputs for speed control of high- efciencypumps

• Datalogging/rmwareupdatesviaSD

memory card

• 2 internal, weather-compensated heating circuits

• Pre-programmed optional functions

• Drainback option

• Time-controlled thermostat function

• Heating period thermal disinfection

• VBus

• Energy-saving switch-mode power supply

Included:

1 x SOM 10 1 x accessory bag

3 x screw and wall plug 13 x strain relief and screw

Additionally enclosed in the full kit: 2 x FKP6 temperature sensor 4 x FRP6 temperature sensor

Note

The SD card is not included with the controller. For more information about accessories, see page 69

205

254

Technical data Housing: plastic, PC-ABS and PMMA Protection type: IP 20 / EN 60529 Protection class: I Ambient temp.: 0...40 °C [32...104 °F] Dimensions: 254 x 205 x 47 mm [10" x 8.1" x 1.9"] Mounting: wall mounting, also suitable for mounting

into patch panels Display: Full graphic display, control lamp (directional

pad) and background illumination

Operation: 7 push buttons at the front of the housing Functions: System controller for solar and heating

systems. Functions such as: ∆T control, pump speed control, energy metering, operating hours counter for the solar pump, evacuated tube collector function, thermostat function, vertical tank loading, priority logic, drainback option, booster function, heat dump function, thermal disinfection function, PWM pump

control, function control according to BAFA guidelines. Inputs: 12 Pt1000, Pt500 or KTY temperature sensor

inputs (7 of them can optionally be used for RTA11-M

remote controls), 3 inputs for V40 owmeters, inputs

for 2 digital and 2 analog Grundfos Direct Sensors™, 1 input for a CS10 irradiation sensor

Outputs: 13 semiconductor relays, 1 dry contact relay, 4 PWM outputs

Interfaces: VBus

, SD card slot

Power supply: 100 ... 240 V~, 50 ... 60 Hz Switching capacities per relay:

1 (1) A 100 ... 240 V~(semiconductor relay) 4 (2) A 100 ... 240 V~(dry contact relay)

Total switching capacity: 6.3 A Standby power consumption: < 1W Mode of operation: type 1.Y Degree of pollution: 2

Rated impulse voltage: 2.5 kV Contact termination: Y

1.1 Optional functions

Solar

Bypass

CS Bypass

External heat exchanger

Evacuated tube collector

Target temperature

Antifreeze

Backup heating suppression

Parallel relay

Cooling mode

Drainback

Twin pump

Heat dump

Flow rate monitoring

Arrangement

Parallel relay

Mixer

Boiler loading

Error relay

Heat exchange

Solid fuel boiler

Circulation

Return preheating

Function block

Irradiation switch

Heating

Thermal Disinfection

DHW heating

2 Installation

2.1 Mounting

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 [0.12“].

Please pay attention to separate routing of sensor cables and power supply cables.

In order to mount the device to the wall, carry out the following steps:

Î Unscrew the cross-head 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 points (centres

223 mm [8.8“]) Î Insert lower wall plugs Î Fasten the housing to the wall with the lower fas-

tening screws and tighten Î Carry out the electrical wiring in accordance with

the terminal allocation, see chap. 2.2 Î Put the cover on the housing Î Attach with the fastening screw

Note

Strong electromagnetic elds can impair the

function of the controller. Make sure the controller as well as the sys-

tem are not exposed to strong electromag-

netic elds.

screw

WARNING!

cover

upper fastening point

lower fastening point

Electric shock!

Upon opening the housing, live parts are exposed.

Î Always disconnect the con-

troller from power supply before opening the housing!

2.2 Electrical connection

Note

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

The controller is equipped with 14 relays in total to which loads such as pumps, valves, etc. can be connected:

Relays 1 ... 13 are semiconductor relays, designed for pump speed control:

Conductor R1 ... R13 Neutral conductor N (common terminal block)

Protective grounding conductor

(common termi-

nal block) Relay 14 is a dry contact relay:

R14-A = normally open contact

R14-M = center contact R14-R = normally closed contact

WARNING!

Electric shock!

Upon opening the housing, live parts are exposed.

Î Always disconnect the con-

troller from power supply before opening the housing!

Note

For more details about the initial commissioning procedure, see page 12.

Depending on the product version, power supply cables and sensor cables are already connected to the device. If that is not the case, please proceed as follows:

Temperature sensors have to be connected to the terminals S1 ... S12 and GND (either polarity).

WARNING!

ESD damage!

Electrostatic discharge can lead to damage to electronic components!

Î Take care to discharge pro-

perly before touching the inside of the device! To do so, touch a grounded surface such as a radiator or tap!

Note:

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

sensor terminals

input for analog Grundfos Direct Sensors™

sensor grounding common terminal block

PWM (0-10 V) terminals

VBus

potential-free changeover relay

input for digital Grundfos Direct Sensors™

neutral conductor common terminal block

protective grounding conductor common terminal block (PE)

The terminals S13 to S15 can be used as either im-

pulse inputs for V40 owmeters or as inputs for FS08 ow switches

V40 owmeters can be connected to the terminals

S13 / V40 to S15 / V40 and GND (either polarity). Connect the irradiation sensor CS10 to the termi-

nals CS10 and GND with correct polarity. To do so, connect the cable marked GND to the GND common terminal block, the cable marked CS to the terminal marked CS10.

The terminals marked PWM are control outputs

for high-efciency pumps.

In the In-/Outputs menu, relays can be allocated to the PWM outputs.

Connect the FlowRotor to the input marked FlowRotor.

Connect the analog Grundfos Direct Sensors™ to the inputs GDSA1 and GDSA2.

Connect the digital Grundfos Direct Sensors™ to the GDSD1 and GDSD2 inputs.

The controller is supplied with power via a power supply cable. The power supply of the device must be 100 ... 240 V~ (50 ... 60Hz).

The power supply connection is at the terminals: Neutral conductor N

Conductor L Conductor L' (L' is not connected with the power supply cable. L' is a fused contact permanently carrying voltage)

Protective grounging conductor

(common termi-

nal block)

2.3 Data communication / Bus

The controller is equipped with the VBus

for data

transfer with and energy supply to external modules. The connection is carried out at the two terminals marked VBus and GND (any polarity). One or more VBus® modules can be connected via this data bus, such as:

• GA3 Large Display module / Smart Display SD3

• AM1 Alarm module

• DL2 Datalogger

• EM Extension module

Furthermore, the controller can be connected to a PC via the VBus

/ USB or VBus® / LAN interface adapter (not included with the SOM 10). With the Service- Center Software (RSC), measured values can be read, processed and visualized. The software allows easier paramatrisation and function control of the system.

Note:

For more information about accessories, see page 80

WARNING!

Electric shock!

L‘ is a fused contact permanently carrying voltage

Î Always disconnect the con-

troller from power supply before opening the housing!

2.4 SD card slot

The controller is equipped with an SD card slot.

With an SD card, the following functions can be carried out:

• Store measurement and balance values onto the SD card. After the transfer to a computer, the values can be opened and visualized, e. g. in a spreadsheet programme.

• Prepare adjustments and parameterizations on a computer and transfer them via the SD card.

• Store adjustments and parameterizations on the SD card and, if necessary, retrieve them from there.

• Download rmware updates from the Internet and

install them on the controller.

A standard SD card is not included with the SOM 10.

For more information about using an SD card, see page 69.

3 Step-by-step parameterization

The SOM 10 is a controller that offers a broad variety of functions to the user. At the same time, the user has

a lot of freedom in congurating them. Therefore, to

set up a complex system, careful planning is required.

We recommend drawing a sketch of the system rst.

If planning, hydronic execution and electrical connection have all been carried out successfully, proceed as follows:

1. Running the commissioning menu

The commissioning menu is run after the rst connection and after every reset. It will request the following basic adjustments:

• Menu language

• Temperature unit

• Volume unit

• Pressure unit

• Energy unit

• Time

• Date

• Solar system

• Hydronic variant

At the end of the commissioning menu, a safety en-

quiry follows. If the safety enquiry is conrmed, the

adjustments are saved. For further information about the commissioning

menu see page 12.

2. Registering sensors

If owmeters, ow switches, Grundfos Direct Sensors™ and/or external extension modules are connected, these have to be registered in the In-/Outputs menu.

For further information about the registration of modules and sensors see page 72.

3. Activating solar optional functions

The basic solar system has been adjusted during commissioning. Now, optional functions can be selected, activated and adjusted.

Free relays can be allocated to optional functions which require a relay. The controller always suggests the numerically smallest free relay.

Sensors can be allocated to more than one function. For further information about the solar optional func-

tions see page 34.

4. Activating optional arrangement functions

Now, optional functions for the non-solar part of the arrangement can be selected, activated and adjusted.

Free relays can be allocated to optional functions which require a relay. The controller always suggests the numerically smallest free relay.

Sensors can be allocated any number of times without impairing any other functions.

For further information about the optional arrangement functions see page 47.

5. Adjusting heating circuits and activating optional heating functions

Now, heating circuits can be activated and adjusted. Internal heating circuits are only offered as long as at least 3 relays are free.

For the heating part of the arrangement, optional functions can be selected, activated and adjusted.

To heating circuits and optional functions which require one or more relays, the corresponding number of free relays can be allocated. The controller always suggests the numerically smallest free relay.

Sensors can be allocated any number of times without impairing any other functions.

For further information about heating circuits and optional heating functions see page 59.

4 Operation and function

4.1 Buttons

The controller is energized via the 7 buttons next to the display.They have the following functions:

Button

- scrolling upwards

- scrolling downwards

- increasing adjustment values

- reducing adjustment values

- conrming

- entering the status menu / chimney

sweeper mode (system-dependent)

- escape button for changing into the

previous menu

4.2 Selecting menu points and adjusting values

During normal operation of the controller, the display is in the main menu. If no button is pressed for a few seconds, the display illumination goes out.

Press any key to reactivate the display illumination.

Î In order to scroll through a menu or to adjust a

value, press either buttons

and

Î To open a submenu or to conrm a value, press

button 5

Î To enter the status menu, press button

conrmed adjustments will not be saved

Î To switch one menu level upwards press button

– unconrmed adjustments will not be saved

If no button has been pressed within a couple of minutes, the adjustment is cancelled and the previous value is retained.

and 3 or buttons

– un-

If the symbol pressing button already opened, a

is shown in front of a menu item,

will open a new submenu. If it is is shown instead of the

–

If the symbol button 5 will open a new submenu.

» is shown behind a menu item, pressing

adjustment channel

adjusted value

(not yet conrmed)

current value savedminimum value maximum value

Values and adjustments can be changed in different ways:

Numeric values can be adjusted by means of a slide bar. The minimum value is indicated to the left, the maximum value to the right. The large number above the slide bar indicates the current adjustment. By pressing buttons or 4 the upper slide bar can be moved to the left or to the right.

Only after the adjustment has been conrmed by

pressing button

will the number below the sli-

de bar indicate the new value. The new value will be

saved if it is conrmed by pressing button 5 again.

active area inactive area

When two values are locked against each other, they will display a reduced adjustment range depending on the adjustment of the respective other value.

In this case, the active area of the slide bar is shortened, the inactive area is indicated as a dotted line. The indication of the minimum and maximum values will adapt to the reduction.

If only one item of several can be selected, they will be indicated with "radio buttons". When one item has

been selected, the radio button in front of it is lled.

If more than one item of several can be selected, they will be indicated with checkboxes. When an item has been selected, an x appears inside the checkbox.

The time frames for the timer can be adjusted in steps of 15 minutes on a time line.

The cursor can be moved along the time line by pressing buttons

or 4. The beginning of a time

frame can be determined by pressing button 1. The end of a time frame can be determined by pres-

sing button

4.3 Menu structure

Main menu

Status Solar Arrangement Heating HQM Basic settings SD card Manual mode User code In- / Outputs Expert

Solar

Basic settings Optional functions Expert

Arrangement

Optional functions

Heating

Demands Heating circuits Optional functions

Basic settings

Language Auto DST Date Time Temp. unit Vol. unit ...

Basic settings

System Collector Store Loading logic

Optional functions

Parallel relay Mixer Store loading Error relay ...

The menu items and adjustment values selectable are variable depending on adjustments already made. The gure only shows an exemplary excerpt of the complete menu in order to visualize the menu structure.

Parallel relay

Relay Reference relay Overrun Delay Inverted ...

In- / Outputs

Modules Inputs Outputs

5 Initial commissioning

When the hydronic system is lled and ready for operation, connect the controller to the power supply.

The controller runs an initialization phase in which

the directional pad ashes red. When the controller is commissioned for the rst

time or when it is reset, it will run a commissioning menu after the initialization phase. The commissioning menu leads the user through the most important adjustment channels needed for operating the system.

Commissioning menu

The commissioning menu consists of the channels described in the following. In order to make an adjustment, push button sing buttons 4 and 2, then bush button 5 to

conrm. The next channel will appear on the display.

. Adjust the value by pres-

button navigation

adjustment mode

changing a value

1. Language:

Î Adjust the desired menu language.

2. Units:

Î Adjust the desired temperature unit.

Î Adjust the desired volume unit.

Î Adjust the desired pressure unit.

conrming a value

Î Adjust the desired energy unit.

next parameter appears auto-

matically

3. Daylight savings time adjustment:

Î Activate or deactivate the automatical daylight

savings time adjustment.

4. Time:

Î Adjust the clock time. First of all adjust the hours,

then the minutes.

5. Date:

Î Adjust the date. First of all adjust the year, then

the month and then the day.

6. Selection of the solar system:

Î Adjust the desired solar system (number of coll-

ectors and stores, hydronic variants).

7. Completing the commissioning menu:

After the system has been selected, a security enquiry

appears. If the enquiry is conrmed, the adjustments

will be saved.

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

button

Î In order to reenter the commissioning menu

channels, press button

If the security enquiry has been conrmed, the controller is ready for operation and should enable an optimum system operation.

All adjustments made during commissioning can, if necessary, be changed later on in the basic settings menu.

5.1 Basic systems and hydronic variants

System

The controller is preprogrammed for 9 basic systems. The selection depends on the number of heat sources

(collector elds) and heat sinks (stores, pool). Factory

setting is system 1.

System 0: no solar system

System 1: 1 collector eld - 1 store

System 2: east- / west collectors - 1 store

System 3: 1 collector eld - 2 stores

System 4: east- / west collectors - 2 stores

System 5: 1 collector eld - 3 stores

System 6: east- / west collectors - 3 stores

System 7: 1 collector eld - 4 stores

System 8: east- / west collectors - 4 stores

System 9: 1 collector eld - 5 stores

The selection of the basic solar system is one of the most important adjustments and is thus requested already in the commissioning menu.

First, the basic system is adjusted by means of the number of stores and collectors elds, then the hydronic variant.

The selected system is visualized by the corresponding number of store and collector symbols. The gure to the left shows system 6 which consists of 3

stores and 2 collector elds ("east- / west collectors").

Variant

The hydronic variant refers to the different actuators that are to be controlled. They are visualized on the display by means of symbols, when the variant is selected. The upper symbol indicates the actuator

belonging to the collector elds, the lower one the

actuators belonging to the stores.

The exemplary gure shows the display indicated

when system 6, variant 2 has been selected. In this

case, each collector eld has a 2-port valve, the stores

are loaded by means of pump logic.

For each variant, the controller allocates the corresponding relays and sensors. The allocations of the most important combinations are shown in 5.2.

A solar system with vertical tank loading is implemented as a 2-store system

(store top = store 1; store bottom = store 2).

5.2 Overview of relay and sensor allocation

System 1

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay Solar pump Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function

Sensor Collector 1 Tank bottom Free Free Free Free Free Free Free Free

System 2 variant 1

R1 R2

S1 S6

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay Pump coll. 1 Pump coll. 2 Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function

Sensor Collector 1 Tank bottom Free Free Free Collector 2 Free Free Free Free

System 2 variant 2

S1 S6

R1 R2

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay 2PV coll. 1 2PV coll. 2 Solar pump Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function Opt. function

Sensor Collector 1 Tank bottom Free Free Free Collector 2 Free Free Free Free

System 3 variant 1

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay Solar pump

Sensor

Collector Tank 1 bottom Free Tank 2 bottom Free Free Free Free Free Free

3PV

tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

System 3 variant 2

S4S2

R1 R2

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Sensor Collector Tank 1 bottom Free Tank 2 bottom Free Free Free Free Free Free

System 3 variant 3

Solar pump

tank 1

Solar pump

tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

S2 S4

Relay / sensor allocation

R2 R3

1 2 3 4 5 6 7 8 9 10-14

Relay Solar pump

Sensor Collector Tank 1 bottom Free Tank 2 bottom Free Free Free Free Free Free

2PV

tank 1

2PV

tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional function

Optional

function

Optional

function

System 4 variant 1

S1 S6

Relay / sensor allocation

Relay

Sensor

System 4 variant 2

Relay / sensor allocation

Relay

Pump coll. 1 Pump coll. 2

Collector 1 Tank 1 bottom Free Tank 2 bottom Free Collector 2 Free Free Free Free

Pump coll. 1 Pump coll. 2

S2 S4

1 2 3 4 5 6 7 8 9 10-14

3PV

tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

S4S2

R3 R4

1 2 3 4 5 6 7 8 9 10-14

2PV

tank 1

2PV

tank 2

Optional

function

Optional function

Optional

function

Optional function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Free Collector 2 Free Free Free Free

System 4 variant 3

S1 S6

S4S2

S2 S4

S1 S6

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

2PV coll. 1 2PV coll. 2

Solar pump

tank 1

Solar pump

tank 2

Optional

function

Optional

function

Optional

function

Optional function

Optional

function

Optional

function

Sensor

System 4 variant 4

Relay / sensor allocation

Relay

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Free Collector 2 Free Free Free Free

2PV coll. 1 2PV coll. 2 Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Free Collector 2 Free Free Free Free

1 2 3 4 5 6 7 8 9 10-14

3PV

tank 1

Optional

function

Optional

function

Optional

function

Optional function

Optional

function

Optional

function

System 5 variant 1

Relay / sensor allocation

Relay

Sensor

Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Free Free Free Free Free

S2 S4 S5

R2 R3 R4

1 2 3 4 5 6 7 8 9 10-14

2PV

tank 1

2PV

tank 2

2PV

tank 3

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

System 5 variant 2

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Sensor

Solar pump

tank 1

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Free Free Free Free Free

R1 R2 R3

Solar pump

tank 2

Solar pump

tank 3

Optional

function

S5S4S2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

System 5 variant 3

S6S1

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Sensor

System 6 variant 1

Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Free Free Free Free Free

Relay / sensor allocation

3PV

tank 1

R1 R2

3PV

tank 2

S2 S4 S5

Optional

function

R5R4R3

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Relay

Sensor

1 2 3 4 5 6 7 8 9 10-14

Pump coll. 1 Pump coll. 2 2PV tank 1 2PV tank 2 2PV tank 3

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Free Free Free Free

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

System 6 variant 2

S1 S6

S2 S4 S5

R1 R2 R3

R5R4

S1 S6

Relay / sensor allocation

Relay

Sensor

System 6 variant 3

Relay / sensor allocation

Solar pump

tank 1

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Free Free Free Free

Relay

2PV coll. 1 2PV coll. 2 Solar pump

1 2 3 4 5 6 7 8 9 10-14

Solar pump

tank 2

Solar pump

tank 3

2PV coll. 1 2PV coll. 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

R1 R2

S2 S4 S5

R4 R5 R6

1 2 3 4 5 6 7 8 9 10-14

2PV

tank 1

2PV

tank 2

2PV

tank 3

Optional function

Optional

function

Optional function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Free Free Free Free

System 6 variant 4

S1 S6

Relay / sensor allocation

Relay

Sensor

System 6 variant 5

Relay / sensor allocation

Relay

R3 R4

S2 S4 S5

1 2 3 4 5 6 7 8 9 10-14

Pump coll. 1 Pump coll. 2 3PV tank 1 3PV tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Free Free Free Free

S2 S4 S5

1 2 3 4 5 6 7 8 9 10-14

2PV coll. 1 2PV coll. 2 Solar pump

3PV

Tank 1

3PV

Tank 2

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Free Free Free Free

System 7 variant 1

Relay / sensor allocation

Relay

Sensor

System 7 variant 2

Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Free Free Free Free

Relay / sensor allocation

Relay

Solar pump

S2 S4 S5

R2 R3 R4 R5

1 2 3 4 5 6 7 8 9 10-14

2PV

tank 1

2PV

tank 2

2PV

tank 3

2PV

tank 4

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

R2 R3 R4

S2 S4 S5

1 2 3 4 5 6 7 8 9 10-14

3PV

tank 1

3PV

tank 2

3PV

tank 3

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Free Free Free Free

System 7 variant 3

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Solar pump

tank 1

S2 S4 S5 S6

R1 R2 R3 R4

Solar pump

tank 2

Solar pump

tank 3

Solar pump

tank 4

Optional

function

Optional

function

Optional

function

Optional function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Free Free Free Free

System 8 variant 1

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Sensor

Pump coll. 1 Pump coll. 2

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Tank 4 bottom Free Free Free

S2 S4 S5 S7

2PV

tank 1

2PV

tank 2

2PV

tank 3

2PV

tank 4

Optional

function

Optional

function

Optional

function

Optional

function

System 8 variant 2

Relay / sensor allocation

Relay

Pump coll. 1 Pump coll. 2

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Tank 4 bottom Free Free Free

System 8 variant 3

Relay / sensor allocation

Relay

Solar pump

tank 1

S2 S4 S5 S7

1 2 3 4 5 6 7 8 9 10-14

3PV

tank 1

S2 S4 S5 S7

3PV

tank 2

3PV

tank 3

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

1 2 3 4 5 6 7 8 9 10-14

Solar pump

tank 2

Solar pump

tank 3

Solar pump

tank 4

2PV coll. 1 2PV coll. 2

Optional

function

Optional

function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Tank 4 bottom Free Free Free

System 8 variant 4

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Sensor

2PV coll. 1 2PV coll. 2 Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Tank 4 bottom Free Free Free

System 8 variant 5

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

2PV coll. 1 2PV coll. 2 Solar pump

S2 S4 S5 S7

tank 1

2PV

tank 2

2PV

tank 3

2PV

tank 4

Optional function

Optional

function

Optional

function

S2 S4 S5 S7

3PV

tank 1

3PV

tank 2

3PV

tank 3

Optional

function

Optional function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Collector 2 Tank 4 bottom Free Free Free

System 9 variant 1

Relay / sensor allocation

Relay

Sensor

System 9 variant 2

Solar pump

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Tank 5 bottom Free Free Free

Relay / sensor allocation

Relay

Solar pump

S2 S4 S5 S6 S7

1 2 3 4 5 6 7 8 9 10-14

2PV

tank 1

R3 R4 R5 R6

2PV

tank 2

2PV

tank 3

2PV

tank 4

2PV

tank 5

Optional

function

Optional

function

Optional

function

Optional

function

S2 S4 S5 S6 S7

1 2 3 4 5 6 7 8 9 10-14

3PV

tank 1

3PV

tank 2

3PV

tank 3

3PV

tank 4

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Tank 5 bottom Free Free Free

System 9 variant 3

Relay / sensor allocation

1 2 3 4 5 6 7 8 9 10-14

Relay

Solar pump

tank 1

S2 S4 S5 S6 S7

R1 R2 R3 R4 R5

Solar pump

tank 2

Solar pump

tank 3

Solar pump

tank 4

Solar pump

tank 5

Optional

function

Optional

function

Optional

function

Optional

function

Optional

function

Sensor

Collector 1 Tank 1 bottom Free Tank 2 bottom Tank 3 bottom Tank 4 bottom Tank 5 bottom Free Free Free

6 Main menu

7 Status

7.3 Heating

During normal operation, the display of the controller shows the main menu. From here, the different menu areas can be selected.

The following menus are available:

• Status

• Solar

• Arrangement

• Heating

• HQM

• Basic settings

• SD card

• Manual mode

• User code

• In- / Outputs

• Expert

Î Select the menu area by pressing buttons

Î Press button 5 in order to enter the selected

Note

When no button is pressed for 1 minute, the display illumination stops. After 3 more minutes, the controller switches into the Status menu.

Î In order to access the main menu, press

button

and

In the Status menu, the status messages for every menu area can be found.

7.1 Solar

In the Status / Solar menu, the status of the solar system, the solar loading and the selected optional functions are indicated.

7.2 Arrangement

In the Status / Arrangement menu, the status of the selected optional functions is indicated.

In the Status / Heating menu, the status of the demands and heating circuits activated as well as of the selected optional functions is indicated.

7.4 Messages

In the Status / Messages menu, error and warning messages which have not been acknowledged are indicated.

During normal operation, the message Everything OK is indicated.

A line break or short circuit in a sensor line is indicated as !Sensor fault. A precise error code can be found in the Status / Meas.- / Balance values menu.

If the optional function Flow rate monitoring is activated and has detected an error, the message !Flow r. monit. is indicated.

All messages will additionally be displayed in the corresponding menus. In order to acknowledge an error message, the corresponding menu has to be entered. If, for example, the message !Flow r. monit. appears, it will also be displayed in the Solar / Optional func- tions / Flow rate monitoring. In that menu, the message can be acknowledged.

7.5 Meas. / Balance values

8 Solar

If, for example, S1 is selected, a submenu indicating the minimum and maximum values will open.

When the item Chart is selected, a progression chart appears.

In the Status / Meas. / Balance values menu, all cur- rent measurement values as well as a range of balance values are displayed. Some of the menu items can be selected in order to enter a submenu.

Additionally, all optional functions selected, the operating hours counter as well as activated heat quantity measurements are displayed.

If, for example, Solar / System is selected, a submenu with the sensors and relays allocated to the solar system opens. In the submenu, the current temperatures and the current pump speed are displayed.

When a line with a measurement value is selected, another submenu will open.

The progression chart shows the development of the temperature at the corresponding sensor over the last 24 hours. Press buttons back and forth between a chart of the current day and one of the day before.

7.6 Service

In the Status / Service menu, each sensor and relay is indicated with the component or function it has been allocated to. For free sensors and relays, Free is indicated.

and 4 to switch

In this menu, all adjustments for the solar part of the arrangement can be made. The Solar menu consists of the following submenus:

• Basic settings

• Optional functions

• Expert

8.1 Basic solar settings

In the Basic settings menu, all basic settings for the solar part of the arrangement can be adjusted.

In this menu, the hydronic system, which is the basis for the arrangement, can be adjusted. The setting is divided into systems and variants.

Both system and variant have usually been adjusted during commissioning. If the setting is changed later on, all adjustments for the solar part of the arrangement are set back to their factory settings.

If the change causes the new solar system to require a relay that has been allocated to an arrangement function before, all adjustments made in the non-solar part will be set back to their factory settings as well.

First of all, the basic solar system can be selected ac-

cording to the number of stores and collector elds

in use. The corresponding numbers are indicated on the display.

The exemplary gure shows system 6 with its 3 stores and 2 collector elds (east- / west collectors).

The following items in the Solar / Basic settings menu will adjust to the system selected.

Collector (1/2)

In systems with 2 collector elds, 2 seperate menu

items (Collector 1 and Collector 2) are displayed instead of Collector.

For each collector eld, a collector minimum limitation and a collector emergency shutdown temperature can be adjusted.

When the basic system has been selected and conrmed, the hydronic variant can be selected. The variant is visualized on the display by means of pump and

valve symbols. The exemplary gure shows variant 2

of system 6 with a 2-port valve and a pump. For an overview of the basic systems and their variants see chap. 5.2 on page 15.

The controller supports up to 2 collector elds and up to 5 solar stores (with 2 collector elds only up to

4 solar stores).

Solar / Basic settings / Collector (1/2)

Adjustment channel Description Adjustment range / selection Factory setting Colmin. Minimum collector limitation Yes, No Ye s

Colmin. Minimum collector temperature 10 ... 90 °C [50 ... 194 °F] 10 °C [50 °F]

Colem. Collector emergency shutdown Yes, No Yes

Colem.

Collector emergency temperature

80 ... 200 °C [176 ... 392 °F] 130 °C [266 °F]

Store (1 / 2 / 3 / 4 / 5)

In systems with 2 or more stores, the corresponding number of seperate menu items (Store 1 to Store 5) is displayed instead of Store.

For each store, an individual ∆T control, a set and a maximum temperature, the priority, a hysteresis, a rise value, a minimum runtime and a minimum pump speed can be adjusted.

In multi-store-systems with differing Store set / Maximum store temperatures, all stores are loaded up

to their Stset temperatures rst (according to their

priority and the store sequence control). Only when all stores have exceeded Stset will they be loaded up to their Stmax temperatures, again according to their priority and the store sequence control.

Solar / Basic settings / Store (1 / 2 / 3 / 4 / 5)

Adjustment channel Description Adjustment range / selection Factory setting

∆To n

∆Toff

∆Tset

Stset Store set temperature 4 ... 95 °C [40 ... 204 °F] 45 °C [114 °F] Stmax Maximum store temperature 4 ... 95 °C [40 ... 204 °F] 60 °C [140 °F]

Priority Priority 1

HysSt

Rise Rise 1.0 ... 20.0 K [2.0 ... 40.0°Ra] 2.0 K [4.0 °Ra] tmin Minimum runtime 0 ... 300 180

Min speed. Minimum speed 30 ... 100 % 30 %

Deactivated Blocked for solar loading Yes, No No

Switch-on temperature difference 1.0 ... 20.0 K [2.0 ... 40.0°Ra] 6.0 K [12.0 °Ra]

Switch-off temperature difference 0.5 ... 19.5 K [1.0 ... 39.0°Ra] 4.0 K [8.0 °Ra]

Set temperature 1.5 ... 30.0 K [1.5 ... 60.0°Ra] 10.0 K [20.0 °Ra]

1 ... 5 (system-dependent)

Hysteresis maximum store temperature

0.1 ... 10.0 K [0.2 ... 20.0°Ra] 2.0 K [4.0 °Ra]

Loading logic

In systems with 2 or more stores, loading logic adjustments can be made in this menu.

In systems 1 and 2, only the menu item Pump delay will be available.

If the priority store cannot be loaded, the subordinate store next in priority is checked. If useful heat can

be added, it will be loaded for the circulation time (Circ. – factory setting 15 min.) After this, the loading

Solar / Basic settings / Loading logic

process stops and the controller monitors the increase in collector temperature during the loading break time Load. break. 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 Circ. time 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 second store will be continued. If the priority store reaches its maximum temperature, sequence controlled loading will not be carried out.

If store sequence control is active and the system switches to load the priority store, the parameter Load. break also acts as a stabilization timer, during which the switch-off condition is ignored while the system operation stabilizes.

8.2 Solar optional functions

In this menu, additional functions can be selected and adjusted for the solar part of the arrangement.

By selecting Add new function..., different pre-programmed functions can be selected. The optional functions are available as long as free relays are available.

Adjustment channel Description Adjustment range / selection Factory setting Load. break Loading break time 1 ... 5 2 Circ. Circulation time 1 ... 60 15 Break speed Pause speed Yes, No No Speed Pause speed 30 ... 100 % 30 % Pump delay Pump delay Yes, No No Delay Delay time 5 ... 600 15

When a function is selected, a submenu opens in which all adjustments required can be made.

With this menu item, a relay and, if necessary, certain system components can be allocated to the function.

Relay selec.ControllerOpt. functionsAdd new function...Status / Service

At the end of each optional function submenu, the

menu items Funct. and Delete function are available.

With the menu item Funct., an optional function already selected can be temporarily deactivated or reactivated respectively. All adjustments remain stored, the allocated relays remain occupied and cannot be allocated to another function.

If the menu item Delete function is conrmed by pressing button 5, a security enquiry appears. The setting can be changed between Yes and No by pres- sing buttons and 4. If Ye s has been selected

and conrmed by pressing button

, the function is deleted and available under Add new function... again. The corresponding relays are available again.

Bypass

In order to prevent energy from being extracted from the store when starting store loading, this function

makes sure that the cold uid in the pipes is diverted

past the store via a bypass (valve or pump). Once the pipe is warm enough, the store can be loaded. The switch-on conditions can be adjusted individually.

Variant pump:

Relay

Exemplary schematics for the bypass variants

Solar / Opt. functions / Add new function... / Bypass

Adjustment channel Description Adjustment range / selection Factory setting Collector Collector eld system dependent system dependent Relay Bypass relay system dependent system dependent Variant Variant (pump or valve logic) pump, valve pump Sensor Bypass sensor system dependent system dependent

∆To n ∆Toff

Funct. Activation / Deactivation Activ., Deactivated Activ.

Bypass sensor

Switch-on temperature difference 1.0 ... 20.0 K [2.0 ... 40.0 °Ra] 6.0 K [12.0 °Ra] Switch-off temperature difference 0.5 ... 19.5 K [1.0 ... 39.0 °Ra] 4.0 K [8.0 °Ra]

Variant valve:

Bypass sensor

Relay

Depending on whether the bypass is energized by a valve or by a second pump, a corresponding adjustment can be made in the menu item Variant. Depending on the variant, different control logics are applied:

Pump:

In this version, a bypass pump is placed in front of the collector pump.

The bypass pump is rst activated when store loading is possible. If the switch-on condition is fullled, the

bypass pump is switched off and the collector circuit pump is activated.

Valve: A bypass valve is placed into the solar circuit.

The solar heat exchanger is rst bypassed when store

loading is possible. If the above-mentioned switch-on condition is fullled, the bypass relay switches the collector circuit via the heat exchanger.

CS bypass

The CS bypass function is a different possibility to activate the collector circuit bypass. To enable the use of the CS bypass function, a CS10 irradiation sensor has to be connected.

When the CS bypass function is activated, the irradiation value is the switch-on condition for the collector circuit bypass.

The relay remains switched on if the Irrad. value is exceeded for the Delay time. When solar loading begins or the irradiation value remains below the switchon value for the delay time, the relay is switched off.

Solar / Opt. functions / Add new function... / CS bypass

Adjustment channel Description Adjustment range / selection Factory setting Collector Collector eld system dependent system dependent Irrad. Switch-on irradiation 100 ... 500 W / m² 200 W / m² Delay Delay time 10 ... 300 s 120 s Funct. Activation / Deactivation Activ., Deactivated Deactivated

Tube collector function

Solar / Opt. functions / Add new function... / Tube collector

Adjustment channel Start Start time frame 00:00 ... 23:00 08:00

Stop Stop time frame 00:30 ... 23:30 19:00

Run Pump runtime 5 ... 600 s 30 s Break Break 1 ... 60 min 30 min

Delay Pump delay 5 ... 600 s 30 s Collector Collector eld system dependent system dependent Funct. Activation / Deactivation Activ., Deactivated Deactivated

Description Adjustment range / selection Factory setting

This function helps overcome the non-ideal sensor position with some evacuated tube collectors.

This function operates within an adjusted time frame. It activates the collector circuit pump for an adjustable runtime between adjustable pauses 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.

2-collector systems

In 2-collector systems, the evacuated tube collector

function is available for each individual collector eld. If one of the collector elds is being loaded, the heat

transfer uid ows through the inactive eld and only

the corresponding relay is energized.

Multi-store systems

If the evacuated tube collector function is activated, the speed of the solar pump will decrease to the minimum speed during the loading break time. The solar loading of the subordinate store will continue.

In 2-collector systems, during the loading break time,

the collector eld which has been active before the

loading break time remains active during the loading break time, unless the evacuated tube collector func-

tion of the inactive eld becomes active.

Target temperature

Solar / Opt. functions / Add new function... / Target temperature

Adjustment channel Description Adjustment range / selection Factory setting Targ. temp. Target temperature 20 ... 110 °C [68 ... 230 °F] 65 °C [150 °F] Sensor Reference sensor system dependent system dependent Rise Rise 1.0 ... 20.0 K [2.0 ... 40.0 °Ra] 2.0 K [4.0 °Ra] Funct. Activation / Deactivation Activ., Deactivated Deactivated

Antifreeze

Solar / Opt. functions / Add new function... / Antifreeze

Adjustment channel Description Adjustment range / selection Factory setting Frost on Antifreeze switch-on temperature -40 ... +15 °C [-40 ... +58 °F] +4 °C [+40 °F] Frost off Antifreeze switch-off temperature -39 ... +16 °C [-39 ... +60 °F] +6 °C [+44 °F] Collector Collector eld system dependent system dependent Store (1 ... 5) Store succession order system dependent system dependent Funct. Activation / Deactivation Activ., Deactivated Deactivated

When the Target temperature function is acti- vated, the pump speed control logic changes. The controller will remain at the minimum pump speed until the temperature at the allocated sensor exceeds the adjusted target temperature. Only then will the standard pump speed control start to operate. If the temperature at the allocated sensor changes by the adjusted Rise value, the pump speed will be adjusted correspondingly.

If the Ext. HX (see page 43) function has beed ac- tivated, too, the target temperature control will pause while the external heat exchanger is loaded. While the external heat exchanger is loaded, its own pump speed control will come into effect.

As soon as the temperature at the collector is 4 °C [40 °F], the antifreeze function operates the loading circuit between the collector and the 1st store in or-

der to protect the heat transfer uid in the loading

circuit against freezing or coagulation. If the collector temperature exceeds 6 °C [44 °F], this

function is switched off. Heat will be extracted from the stores according to

the adjusted order. If all stores have reached their minimum temperature of 5 °C [42 °F], the function becomes inactive.

The minimum pump speed is set to 100%. In 2-collector systems, the antifreeze menu is exten-

ded. The adjustment channels are seperated numerically.

Afterheating suppression

Solar / Opt. functions / Add new function... / AH suppress.

Adjustment channel Description Adjustment range / selection Factory setting Relay Reference relay system dependent system dependent Store Sensor selection system dependent system dependent Tset Set temperature Yes, No No Funct. Activation / Deactivation Activ., Deactivated Deactivated

The afterheating suppression blocks the conventional afterheating of a store that is currently in solar loading.

This function is activated if a previously selected Store is being loaded.

Solar loading means that store loading is only carried out for energy supply and not for cooling purposes etc.

If the Tset option is activated, the backup heating will only be suppressed when the store temperature exceeds Tset.

Parallel relay With this function, e. g. a valve can be controlled in

Solar / Opt. functions / Add new function... / Parallel relay

Adjustment channel Description Adjustment range / selection Factory setting Relay Parallel relay system dependent system dependent Store Sensor selection system dependent system dependent Funct. Activation / Deactivation Activ., Deactivated Deactivated

parallel to a solar pump via a separate relay. Switch-on condition for the solar parallel relay func-

tion is that one or more of the selected stores is being loaded. If at least one of the selected stores is being loaded, the parallel relay is energized.

The parallel relay function operates regardless whether the store is subjected to regular solar loading or to a loading caused by an optional function (such as the collector cooling).

Note:

If a relay is in the manual mode, the selected parallel relay will not be energized.

Cooling mode

In the cooling mode menu, different cooling functions are available. They can be used for keeping the solar system operational for a longer time during strong solar irradiation.

For this purpose, the adjusted maximum store temperatures can be exceeded. The store order for this overloading can be adjusted. Additionally, each individual store can be excluded from this function.

Two different variants are available for the cooling mode: the system cooling and the collector cooling.

System cooling:

If the system cooling variant has been selected and the switch-on temperature difference is exceeded, store loading is continued even if the corresponding maximum temperature is exceeded, but only up to the emergency shutdown temperature. Store loading continues until all stores have reached the emergency shutdown temperature or until the switch-off temperature difference is reached.

Collector cooling: If the collector cooling variant has been selected,

store loading is continued or reactivated when the collector maximum temperature is exceeded.

Store loading continues until all stores have reached the emergency shutdown temperature or until the collector temperature falls below the collector maximum temperature by at least 5 K.

In 2-collector systems, separate adjustments can be

made for each collector eld.

The control logic regards collector cooling operation as solar loading. The adjusted values for delay, minimum runtime, etc. remain valid.

In addition to the cooling mode, store cooling is available.

Store cooling: 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.

When the store cooling function is activated, the solar pump is switched on if the maximum store temperature is exceeded and the collector temperature falls below the store temperature. The solar pump remains active until the store temperature falls below the adjusted maximum store temperature.

The store order for the cooling is the same as in the overheating through system- or collector cooling.

The holiday function works like the store cooling function but aims to cool the store further down during times without DHW consumption in order to prepare it for solar loading on the following day.

This function can only be activated if the store cooling function is activated.

The holiday function can either be activated manually when a phase with no DHW consumption begins, or a time frame, during which the function is to become active, can be set in advance. If manual is selected, an input can be allocated to the function. When a switch is connected to the allocated input, it will act as an on/ off switch for the holiday function.

Solar / Opt. functions / Add new function... / Cooling mode

Adjustment channel Description Adjustment range / selection Factory setting Variant Cooling logic variant Col. cool, Syst. cool., Off Off Tcolmax. Collector maximum temperature 70 ... 190 °C [158 ... 374 °F] 100 °C [212 °F] Store (1 ... 5) Store order system dependent system dependent St cooling Store cooling Yes, No No

∆To n ∆Toff

Holiday Holiday function Yes, No No Activation Activation mode Manual, Timer Timer On Holiday function switch-on date Dates up to 31.12.2099 Current date Off Holiday function switch-off date Dates up to 31.12.2099 Current date Input Holiday function switch input system dependent system dependent

Stmax (1 ... 5)

Switch-on temperature difference 1.0 ... 30.0 K [2.0 ... 60.0 °Ra] 20.0 K [40.0 °Ra] Switch-off temperature difference 0.5 ... 29.5 K [1.0 ... 59.0 °Ra] 15.0 K [30.0 °Ra]

Maximum store temperature Holiday function

4 ... 95 °C [40 ... 204 °F] 40 °C [104 °F]

Solar external heat exchanger This function is used to link loading circuits that are

Solar / Opt. functions / Add new function... / Ext. HX

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Min speed Minimum speed 30 ... 100 % 30 % Store Sensor selection system dependent 1 Sensor HX Reference sensor ext.HX system dependent system dependent Targ. temp. Target temperature option Yes, No No

Sensor

Targ. temp. Target temperature 15 ... 95 °C [60 ... 204 °F] 60 °C [140 °F]

∆To n ∆Toff

Overrun Overrun time 1 ... 15 min 2 min

Target temperature reference sensor

Switch-on temperature difference 1.0 ... 20.0 K [2.0 ... 40.0 °Ra] 10.0 K [20.0 °Ra] Switch-off temperature difference 0.5 ... 19.5 K [1.0 ... 39.0 °Ra] 5.0 K [10.0 °Ra]

system dependent system dependent

separated by an external heat exchanger. The allocated relay is energized if one of the selec-

ted stores is being loaded and there is a temperature difference between the sensor of the corresponding

store and the solar ow.

Any number of the solar stores can be selected. The relay is switched off if this temperature difference

falls below the adjusted switch-off difference. In contrast to the bypass function, a differential con-

trol between Sensor HX and the store temperature can be carried out by means of the heat exchanger relay.

The reference sensor can be arbitrarily allocated. In systems in which stores are equipped with their

own loading pumps, the relay “external heat exchanger“ controls the primary circuit pump.

The heat exchanger is protected by a non-adjustable antifreeze function.

Note:

Because of the special hydraulics, the target temperature option will not work properly

in systems with 2 collector elds.

Drainback option A drainback system permits the heat transfer uid to

drain back into the holding tank when solar energy is not collected.The drainback option will initiate the

lling of the system when solar loading begins.

Note:

booster pump

R1 R2

S4/TR

Exemplary drainback system layout (R2 = booster pump)

Solar / Opt. functions / Add new function... / Drainback

Adjustment channel Description Adjustment range / selection Factory setting Filling time Filling time 1 ... 30 min 5 min Stab. time Stabilization time 1.0 ... 15.0 min 2,0 min Initialis. Initialization time 1 ... 100 s 60 s Booster Booster option Yes, No No Relay Booster pump relay selection system dependent system dependent Drain impulse Drain impulse option Yes, No No Delay Delay time 1 ... 30 min 3 min Duration Drain impulse loading duration 1 ... 60 s 10 s Funct. Activation / Deactivation Activ., Deactivated Deactivated

The parameter Filling time is used to adjust the time period for which the pump will be run at 100 %

speed in order to ll the system.

The parameter Stab. time is used for adjusting the time period during which the switch-off condition will

be ignored after the lling time has ended.

The parameter Initialis. is used for adjusting the time period during which the switch-on condition must

be permanentely fullled for the lling procedure to

start. The Booster option is used for switching on a se-

cond pump when lling the solar system. The corresponding relay is switched on at 100 % speed for the

duration of the lling time.

A short time (Delay time) after the system has been emptied, the Drain impulse option will switch on the solar pump for an adjustable Duration. Thus, a

hydrostatic head will form in the ow pipe. When it

falls back into the holding tank, water pockets remaining in the collector will be sucked down into the holding tank.

Twin pump The Twin pump function controls the equal distri-

rela

Exemplary gure of twin pumps in the solar ow with upstream owmeter

Solar / Opt. functions / Add new function... / Twin pump

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Ref. relay Reference relay selection system dependent system dependent Runtime Pump runtime 1 ... 48 h 6 h Flow rate mon. Flow rate monitoring option Yes, No No Flow rate sen. Flow rate sensor selection Imp1 ... Imp3, Ga1, Ga2, Gd1, Gd2 Imp1 Delay Delay time 1 ... 10 min 5 min Funct. Activation / Deactivation Activ., Deactivated Deactivated

eference relay

bution of pump runtime in systems with two equally usable pumps.

If the allocated relay has exceeded its adjusted runtime and the next switch-on process is imminent, the reference relay is switched on instead. All characteristics are adopted.

If the reference relay has in turn exceeded its runtime

as well, the rst relay is switched on again in the next

switch-on process. Additionally, the Flow rate monitoring option can

be activated in order to activate the twin pump in the case of a ow rate error. When the ow rate monitoring option is activated, two additional adjustment channels appear for allocating a sensor and adjusting a delay time.

If the ow rate monitoring option is activated, an error message will appear when no ow rate is detec-

ted at the allocated sensor after the Delay time has passed. The active relay is considered as defective and will be blocked until the error message has been acknowledged. The second relay will be activated instead. The twin pump function will pause until the error message has been acknowledged.

When the error message is acknowledged, the controller runs a test during which it will energize the

relay and again monitor the ow rate.

Heat dump The heat dump function can be used to direct excess

Relay

Note:

The switch-on collector temperature is blocked against the emergency switch-off temperature by 10 K [20 °Ra].

Solar / Opt. functions / Add new function... / Heat dump

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent

Tcol. Switch-on collector temperature 40 ... 190 °C [104 ... 374 °F] 110 °C [230 °F] Funct. Activation / Deactivation Activ., Deactivated Deactivated

heat generated by strong solar irradiation to an external heat exchanger (e. g. fan coil) in order to prevent the collectors from overheating.

The allocated relay is energized with 100%, if the collector temperature reaches the adjusted switch-on temperature. If the collector temperature falls by 5 K below the adjusted collector overtemperature, the relay will be switched off.

If one of the store temperatures exceeds its respective maximum temperature by more than 5 K while the heat dump function is active, the function is deactivated and an error message appears. If the store temperature falls below the maximum store temperature again, the heat dump function is released.

Flow rate monitoring The ow rate monitoring function can be used to de-

Solar / Opt. functions / Add new function... / Flow rate mon.

Adjustment channel Description Adjustment range / selection Factory setting Sensor Flow rate sensor selection Imp1 ... Imp3, Ga1, Ga2, Gd1, Gd2 Imp1 Ref. relay Reference relay selection system dependent system dependent Store Sensor selection system dependent 1 Funct. Activation / Deactivation Activ., Deactivated Deactivated

tect malfunctions that impede the ow rate and to

switch off the corresponding relay. This will prevent system damage, e. g. through a dry run of the pump.

If the ow rate monitoring function is activated, an error message will appear when no ow rate is detected at the allocated owmeter after the delay time

has passed. The store being loaded is blocked for any further loading until the error message has been acknowledged. The next store free for loading will be loaded instead.

The error message will appear both in the Status / Messages menu and in the optional function menu. It can only be acknowledged in the optional function menu. When the error message is acknowledged, the controller runs a test during which it will energize the

relay and again monitor the ow rate.

8.3 Solar expert menu

Flow sensor

Return sensor

Example of ow- and return sensor positions

Solar / Expert

Adjustment channel Description Adjustment range / selection Factory setting Flow sensor Flow sensor option Yes, No No Sensor Flow sensor selection system dependent system dependent Return sensor Return sensor option Yes, No No Sensor Return sensor selection system dependent system dependent

The expert menu is only available when the expert user code has been entered.

In the expert menu, a ow and a return sensor can be

selected and allocated. The activated sensors are used to detect the switch-off conditions.

Note:

Because of the special hydraulics, this function will not work properly in systems with

2 collector elds.

9 Arrangement

In this menu, all adjustments for the non-solar part of the arrangement can be made.

A range of optional functions can be selected and adjusted.

9.1 Optional functions

In this menu, additional functions can be selected and adjusted for the arrangement.

By selecting Add new function..., different pre-programmed functions can be selected. The optional functions are available as long as free relays are available.

When a function is selected, a submenu opens in which all adjustments required can be made.

With this submenu, a relay and, if necessary, certain system components can be allocated to the function.

The menu item Relay selec. is available in all optional functions. Therefore, it will not be explained in the individual function descriptions.

With this menu item, a relay can be allocated to the function. All free relays are available for selection.

In the submenu Controller, all free relays of the controller are displayed. If external modules are connected and registered, their relays will be displayed in corresponding submenus.

When a function has been selected and adjusted, it will appear in the Opt. functions above the menu

item Add new function....

This allows an easy overview of functions already activated.

An overview about which sensor has been allocated to which component and which relay has been allocated to which function is given in the Status / Service menu.

At the end of each optional function submenu, the menu items Funct. and Delete function are available.

If the menu item Delete function is conrmed by

pressing button

, a security enquiry appears. The setting can be changed between Yes and No by pressing buttons and 4. If Ye s has been selected

and conrmed by pressing button

, the function is deleted and available under Add new function... again. The corresponding relays are available again.

Parallel relay

Note:

If a relay is in the manual mode, the selected parallel relay will not be energized.

Arrangement / Opt. functions / Add new function... / Parallel relay

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Ref. relay Reference relay selection system dependent system dependent Overrun Overrun option Yes, No No Duration Overrun time 1 ... 30 min 1 min Delay Delay option Yes, No No Duration Delay time 1 ... 30 min 1 min Inverted Inverted switching option Yes, No No Funct. Activation / Deactivation Activ., Deactivated Deactivated

Mixer

Arrangement / Opt. functions / Add new function... / Mixer

Adjustment channel Description Adjustment range / selection Factory setting Relay closed Relay selection mixer closed system dependent system dependent Relay open Relay selection mixer open system dependent system dependent Sensor Sensor selection system dependent system dependent TMixer Mixer target temperature 0 ... 130 °C [32 ... 266 °F] 60 °C [140 °F] Interval Mixer interval 1 ... 20 s 4 s Runtime Mixer runtime 10 ... 600 s 240 s

Offset

Automatic adaption of the mixer runtime

- -

Time Adjustment time 00:00 ... 23:30 23:30 Funct. Activation / Deactivation Activ., Deactivated Deactivated

The Parallel relay function can be used to operate an allocated parallel relay alongside a selected reference relay. With this function, e. g. a valve can be controlled in parallel to the pump via a separate relay.

If the Overrun option is activated, the parallel relay remains switched on for the adjusted duration time after the reference relay has been switched off.

If the Delay option is activated, the parallel relay will be energized after the adjusted duration has expired. If the reference relay is switched off again during the delay time, the parallel relay will not be switched on at all.

If the Inverted option is activated, the parallel relay switches on when the reference relay switches off and vice versa.

The mixer function can be used to adjust the actual ow temperature to the desired mixer target temperature TMixer. The mixer is opened or closed in pulses depending on this deviation. The pulses are determined by the adjustable Interval. The pause is determined by the difference between the actual value and the set value.

The mixer runtime can either be adjusted in the channel Runtime or automatically adapted with the Offset function. When Offset is selected, the mixer

will close rst. When button

is pressed, the mixer opens and the seconds are counted in the display. As soon as the mixer has reached its open position, press

button

again. The time measured will automati-

cally appear as the value for the channel Runtime. Once per day, the mixer will automatically adjust itself.

The exact Time for that can be adjusted.

Boiler loading

The boiler loading function can be used to load a store zone between 2 sensors. For the monitoring of switch-on and switch-off conditions, 2 sensors are used. The switch-on and switch-off temperatures TBoiler on and TBoiler off are used as reference parameters.

If the measured temperatures at both allocated sensors fall below the adjusted switching threshold TBoiler on, the relay is energized. It is switched off

again when the temperature at both sensors has exceeded TBoiler off.

If one of the two sensors is defective, store loading is suppressed or switched off.

When the Timer option is activated, a timer is indicated in which time frames for the function can be adjusted.

First of all, an overview of the current adjustment is displayed. For each day of the week there is an overview display. The display can be switched back and forth between the different days by pressing buttons

or 4.

In order to adjust the timer, press button

First the individual days of the week or all days of the week can be selected. The last menu item after the list of days is Continue. If Continue is selected, the Edit timer menu opens, in which the time frames can be adjusted.

The time frames can be adjusted in steps of 15 minutes. The cursor can be moved along the time line by pressing buttons or 4. The beginning of a time frame can be determined by pressing button 1. The end of a time frame can be determined by pressing

button

Arrangement / Opt. functions / Add new function... / Boiler loading

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Sensor top Top sensor selection system dependent system dependent Sensor base Base sensor selection system dependent system dependent TBoiler on Boiler switch-on temperature 0 ... 94 °C [32 ... 202 °F] 45 °C [114 °F] TBoiler off Boiler switch-off temperature 1 ... 95 °C [34 ... 204 °F] 60 °C [140 °F] Timer Timer option Yes, No No Timer Timer - Days of the week Day selection All days, Monday ... Sunday, Continue Timer Time frame adjustment 00:00 ... 23:45 Funct. Activation / Deactivation Activ., Deactivated Deactivated

Error relay The error relay function can be used to operate a re-

lay in the case of an error. Thus, e. g. a signaling device can be connected to signal errors.

If the error relay function is activated, the allocated relay will be energized when a sensor fault occurs. If the ow rate monitoring function is activated, the error relay will additionally energized in the case of a

ow rate error.

Arrangement / Opt. functions / Add new function... / Error relay

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Funct. Activation / Deactivation Activ., Deactivated Deactivated

Heat exchange The heat exchange function can be used for transfer-

Sensor Source

Relay

Arrangement / Opt. functions / Add new function... / Heat exchange

Adjustment channel Description Adjustment range / selection Factory setting

Relay Relay selection system dependent system dependent Sen. So. Heat source sensor selection system dependent system dependent Sen. Sink Heat sink sensor selection system dependent system dependent

∆To n ∆Toff ∆Tset

Min. speed Minimum speed 30 ... 100 % 30 %

Tmax

Tmin

Funct. Activation / Deactivation Activ., Deactivated Deactivated

Switch-on temperature difference 1.0 ... 30.0 K [2.0 ... 60.0 °Ra] 6.0 K [12.0°Ra] Switch-off temperature difference 0.5 ... 29.5 K [1.0 ... 59.0 °Ra] 4.0 K [8.0°Ra] Set temperature difference 1.5 ... 40.0 K [3.0 ... 80.0 °Ra] 10.0 K [20.0°Ra]

Maximum temperature of the store to be loaded Minimum temperature of the store to be loaded

10 ... 95 °C [50 ... 204 °F] 60 °C [140 °F]

10 ... 95 °C [50 ... 204 °F] 10 °C [50 °F]

Sensor Sink

ring heat from a heat source to a heat sink. The allocated relay is energized when all switch-on

conditions are fullled:

• the temperature difference between the allocated

sensors has exceeded the switch-on temperature difference

• the temperature at the heat source sensor has exceeded the minimum temperature

• the temperature at the heat sink sensor has fallen below the maximum temperature

If ∆Tset is exceeded, pump speed control will come into effect. For every deviation of 2 K [4 °Ra], the pump speed will be adjusted by 10 %.

Solid fuel boiler The solid fuel boiler function can be used for transfer-

Sensor Solid fuel boiler

Relay

Sensor Store

Arrangement / Opt. functions / Add new function... / Solid fuel boiler

ring heat from a solid fuel boiler to a store. The allocated relay is energized when all switch-on

conditions are fullled:

• the temperature difference between the allocated

sensors has exceeded the switch-on temperature difference

• the temperature at the solid fuel boiler sensor has exceeded the minimum temperature

• the temperature at the store sensor has fallen below the maximum temperature

If ∆Tset is exceeded, pump speed control will come into effect. For every deviation of 2 K [4 °Ra], the pump speed will be adjusted by 10 %.

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Sen. Boiler Solid fuel boiler sensor selection system dependent system dependent Sen. Store Store sensor selection system dependent system dependent

∆To n ∆Toff ∆Tset

Min. speed Minimum speed 30 ... 100 % 30 % Tmax St. Maximum temperature 10 ... 95 °C [50 ... 204 °F] 60 °C [140 °F] Tmin boiler Minimum temperature 10 ... 95 °C [50 ... 204 °F] 60 °C [140 °F]

Funct. Activation / Deactivation Activ., Deactivated Deactivated

Circulation

The circulation function can be used for controlling a circulation pump.

For the control logic, 5 different variants are available:

• Thermal

• Timer

• Therm. + Timer

• Demand

• Demand + Timer If one of the variants is selected, the corresponding

adjustment channels will appear.

Thermal

The temperature at the allocated sensor is monitored. The allocated relay switches on when the adjusted switch-on temperature is exceeded. If the temperature falls below the switch-off temperature, the relay switches off.

Timer

The relay is switched on during the adjusted time frames, outside of them it switches off. For information on how to adjust the timer, see below.

Therm. + Timer

The relay operates when the switch-on conditions of

both above mentioned variants are fullled.

Sensor Circulation

Demand

The allocated FS08 ow switch is monitored for continuity (circuit continuity is achieved when uid passes through the ow switch). If circuit continuity is detected at the ow switch, the relay switches on for

the adjusted runtime. After the runtime has ended, the relay is switched off. During the adjusted break time, the relay remains switched off even if continuity is de-

tected at the ow switch.

Note:

If the ow switch is connected to the input

S1 ... S12, continuity must be detected for at least 5 s for the controller to an impuls input at least 1 s.

Relay

Demand + Timer

The relay operates when the switch-on conditions of

both above mentioned variants are fullled.

When the Timer, Therm. + Timer or Demand + Timer variant is activated, a timer is indicated in

which time frames for the function can be adjusted. First of all, an overview of the current adjustment is

displayed. For each day of the week there is an overview display. The display can be switched back and forth between the different days by pressing buttons

or 4. In order to adjust the timer, press button First, the individual days of the week or all days of the

week can be selected. The last menu item after the list of days is Continue. If Continue is selected, the Edit timer menu opens, in which the time frames can be adjusted.

The time frames can be adjusted in steps of 15 minutes. The cursor can be moved along the time line by pressing buttons

or 4.

The beginning of a time frame can be determined by pressing button

. The end of a time frame can be

determined by pressing button 3.

Arrangement / Opt. functions / Add new function... / Circulation

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent

Type Circulation Type

Demand, Thermal, Timer, Therm.+Timer, Demand+Timer

Thermal

Sensor Circulation sensor selection system dependent system dependent To n Switch-on temperature 10 ... 59 °C [50 ... 138 °F] 40 °C [104 °F] Toff Switch-off temperature 11 ... 60 °C [52 ... 140 °F] 45 °C [114 °F] Timer Timer - Days of the week Day selection All days, Monday ... Sunday, Continue Timer Time frame adjustment 00:00 ... 23:45 Sensor FS08 sensor input selection system dependent system dependent Delay Demand delay time 0 ... 2 s 1 s Runtime Runtime 01:00 ... 15:00 min 03:00 min Break time Break time 10 ... 60 min 30 min Funct. Activation / Deactivation Activ., Deactivated Deactivated

Return preheating

Sensor HS Relay

Arrangement / Opt. functions / Add new function... / Ret. preheat.

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Sen. Return Return sensor selection system dependent system dependent Sen. HS Heat source sensor selection system dependent system dependent

∆To n ∆Toff

Summer off Summer switch-off option Yes, No No Sensor Outdoor sensor selection system dependent system dependent* Toff Switch-off temperature 10 ... 60 °C [50 ... 140 °F] 20 °C [68 °F]

Funct. Activation / Deactivation Activ., Deactivated Deactivated

Switch-on temperature difference 2.0 ... 30.0 K [4.0 ... 60.0 °Ra] 6.0 K [12.0 °Ra] Switch-off temperature difference 1.0 ... 29.0 K [2.0 ... 58.0 °Ra] 4.0 K [8.0 °Ra]

Sensor Return

The return preheating function can be used for transferring heat from a heat source to the heating circuit return.

The allocated relay is energized when both switch-on

conditions are fullled:

• the temperature difference between the allocated

sensors has exceeded the switch-on temperature difference

• the temperature at the outdoor temperature

sensor has fallen below the adjusted outdoor temperature

With the summer switch-off option, the return preheating can be suppressed outside the heating period. If the heating circuit concerned is controlled by the controller, the adjustments automatically adapt to the heating circuit.

* When a heating circuit has been activated, this

adjustment is determined by the corresponding parameter in the heating circuit menu.

Function block

In addition to the pre-dened optional functions, function blocks consisting of thermostat functions, timer and differential functions are available. With the help of these function blocks, further components, resp. functions can be controlled.

To each function block, sensors and free relays can be allocated. Sensors already in use can be allocated again without impeding their control functions.

Within a function block the functions are intercon-

Function Function block 1

Relay 3

Thermostat

Differential function ∆T ∆T

Timer Timer

thermostat a- S3

thermostat b- S4

Sen. 1 Sen. 2

nected (AND gate). This means that the conditions

of all the activated functions have to be fullled (e.

g. thermostat and timer) for switching the allocated

relay. As soon as one condition is not fullled, the relay

is switched off.

Thermostat function

The relay allocated to the function block is switched on, when the adjusted switch-on temperature (Th(x) on) is reached. It is switched off when the adjusted switch-off temperature (Th(x)off) is reached. The switching conditions of all other activated functions of

the function block have to be fullled as well.

Allocate the reference sensor in the expert menu. Adjust the maximum temperature limitation with

Tha-S3

Thb-S4

∆T-S3>S4

Th(x)off > Th(x)on and the minimum temperature limitation with Th(x)on > Th(x)off. The temperatures cannot be set to an identical value.

∆T-function

The relay allocated to the function block is switched on as soon as the adjusted switch-on temperature difference (∆Th(x)on) is reached. It is switched off as soon as the adjusted switch-off temperature difference (∆Th(x)off) is reached. The switching conditions of all other activated functions of the function

block have to be fullled as well.

Timer

Arrangement / Opt. functions / Add new function... / Function block

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay R2 R2 ... R14 Thermostat a Thermostat a Yes, No No Th-a on Switch-on temperature Thermostat a -40 ... 250 °C [-40 ... 482 °F] 40 °C [104 °F] Th-a off Switch-off temperature Thermostat a -40 ... 250 °C [-40 ... 482 °F] 45 °C [114 °F] Sensor Sensor thermostat a S1 ... S12 S4 Thermostat b Thermostat b Yes, No No Th-b on Switch-on temperature Thermostat b -40 ... 250 °C [-40 ... 482 °F] 40 °C [104 °F] Th-b off Switch-off temperature Thermostat b -40 ... 250 °C [-40 ... 482 °F] 45 °C [114 °F] Sensor Sensor thermostat b S1 ... S12 S5

∆T function ∆To n ∆Toff

Sen. So. Heat source sensor Controller S1 ... S12 S6

Differential function Yes, No No Switch-on temperature difference 1.0 ... 50.0 K [2.0 ... 100.0 °Ra] 5.0 K [10.0 °Ra] Switch-off temperature difference 0.5 ... 49.5 K [1.0 ... 99.0 °Ra] 3.0 K [6.0 °Ra]

Sen. Sink Heat sink sensor Controller S1 ... S12 S7 Timer Timer - -

Days of the week Day selection

Timer

Funct. Activation/Deactivation Activ./Deactivated Deactivated

Time frame adjustment

All days, Monday ... Sunday, Continue

00:00 ... 23:45

Irradiation switch The Irrad. switch function can be used for operating

a relay depending on the measured irradiation value. The allocated relay is switched on if the adjusted irra-

diation value remains exceeded for the adjusted duration. If the irradiation falls below the adjusted value for the adjusted duration, the relay is switched off.

If the Inverted option is activated, the relay operates vice versa.

Arrangement / Opt. functions / Add new function... / Irradiation switch

Adjustment channel Description Adjustment range / selection Factory setting Relay Relay selection system dependent system dependent Irrad. Switch-on irradiation 50 ... 1000 W / m² 200 W / m² Duration Switch-on duration 0 ... 30 min 2 min Inverted Inverted switching option Yes, No No Funct. Activation / Deactivation Activ., Deactivated Deactivated

10 Heating

In this menu, all adjustments for the heating part of the arrangement or for the heating circuits respectively can be made.

Demands can be activated, heating circuits can be parameterized and optional functions can be selected and adjusted.

10.1 Demands

Heating / Demands

Adjustment channel Description Adjustment range / selection Factory setting Demand 1 (2) Demand 1 (2) Activ., Deactivated Deactivated Relay Relay selection system dependent system dependent

10.2 Heating circuits

If an internal or external heating circuit has been selected, a new menu opens. In this menu, all sensors and relays required for the heating circuit can be allocated, and all adjustments can be made.

The controller calculates the set ow temperature for

each heating circuit by means of the outdoor temperature and the selected heating curve. If the measured

The controller has two internal, weather-compensated heating circuits and is able to control up to 5 external heating circuits by means of extension modules.

In the menu appearing when New heating circuit is selected, it is possible to choose between the internal heating circuits and, if available, registered modules.

If one or more extension modules are connected, they have to be registered with the controller. Only registered modules are available in the heating circuit selection.

Extension modules can be registered in the In-/Out- puts / Modules menu (see page 72).

ow temperature deviates from the set ow temperature, the mixer is activated in order to adjust the ow

temperature correspondingly. If the outdoor temperature falls below the point whe-

re the calculated set ow temperature would exceed the maximum ow temperature, the maximum ow

temperature is treated as the set temperature for as long as the condition remains.

If the outdoor temperature sensor is defective, an error message is indicated. For the duration of this

condition, the maximum ow temperature -5 K is assumed as set ow temperature.

With the timer, the day / night operation can be ad-

In this menu, up to 2 heating demands can be activated and adjusted.

Activated demands will be available for selection in the relay allocation channels of the corresponding optional functions . This way, several optional functions can demand the same heat source.

If, for example the potential-free changeover relay R14 is allocated to Demand 1, the selection AH- Dem.1 will then become available in addition to the free relays in the adjustment channels Demand of the optional functions for the heating part of the arrangement (see page 64). This way, e. g. the DHW heating function can demand the same boiler for backup heating as the thermal disinfection function.

justed. During day phases, the set ow temperature is

increased by the adjusted day correction value, during night phases it is decreased by the night correction value (night setback).

Summer mode The Mode channel adjustment determines how the

heating circuit is set to summer mode:

Summer off: The summer mode becomes active when the outdoor temperature exceeds the adjusted summer temperature TSummer.

Ext. switch: A switch is connected to a selected sensor input. If the switch is operated, the heating circuit is set to summer mode regardless of the outdoor temperature.

Both: Summer mode is activated regardless of the outdoor temperature when the switch is operated. As long as the switch is not operated, summer mode control works as described for Summer off.

Summer temperature If Summer off or Both has been selected in the

Mode channel, the summer temperature TSummer can be adjusted. If the outdoor temperature exceeds the value adjusted in TSummer, the heating circuit pump is switched off.

For the summer temperature, a daytime time frame can be adjusted with the channels Daytime on and Daytime off. Outside this time frame, the adjustable temperature TNight replaces TSummer.

With the Room thermostat option, up to 5 room thermostats can be integrated into the control logic.

To each room thermostat, a sensor input can be allocated. The temperature at the allocated sensor is monitored. If the measured temperature exceeds the adjusted Room temperature value at all activated room thermostats, the heating circuit pump is deactivated and the mixer remains in its current position.

If the Timer RTH option is activated, time frames can be set for the room thermostats (for information on how to adjust the timer see below). During these time frames, the adjusted room temperature is decreased by the Correction value.

To each room thermostat, an additional relay can be allocated. That relay will operate when the temperature at the allocated sensor falls below the adjusted room temperature. This way, the room in question can be excluded from the heating circuit via a valve as long as the desired room temperature is reached.

In the channel RTH, the room thermostat can be temporarily deactivated or re-activated respectively. All adjustments remain stored.

When the Timer option is activated, a timer is indicated in which time frames for the function can be adjusted.

or 4.

In order to adjust the timer, press button

The time frames can be adjusted in steps of 15 minutes. The cursor can be moved along the time line by

pressing buttons

or 4. The beginning of a time

frame can be determined by pressing button

. The

end of a time frame can be determined by pressing

button 3 .

Heating / HCs / New HC / Internal

Adjustment channel Description Adjustment range / selection Factory setting HC pump Heating circuit pump system dependent system dependent Mixer open Relay selection mixer open system dependent system dependent Mixer closed Relay selection mixer closed system dependent system dependent Flow sensor Flow sensor selection system dependent system dependent Sen. outd. Outdoor sensor selection system dependent system dependent Heating curve Heating curve 0.3 ... 3.0 1.0 Day correction Day correction -5 ... +45 K [-10 ... +90 °Ra] 0 K [0 °Ra] Towmax Maximum ow temperature 10 ... 100 °C [50 ... 212 °F] 50 °C [122 °F] Mode Operation mode Summer off, Ext. switch, both Summer off TSummer Summer temperature day 0 ... 40 °C [32 ... 104 °F] 20 °C [68 °F] Daytime on Daytime on 00:00 ... 23:45 00:00 Daytime off Daytime off 00:00 ... 23:45 00:00

TSummer Summer temperature night 0 ... 40 °C [32 ... 104 °F] 14 °C [58 °F]

Ext.switch

Remote control Remote control option Yes, No No

Sen. Rem.control

Timer Timer option Yes, No No Mode Timer mode Day / Night, Day / Off Day / Night Night corr. Night correction -20 ... +30 K [-40 ... +60 °Ra] -5 K [-10 °Ra] Timer Timer - -

Days of the week Day selection

Timer Time frame adjustment 00:00 ... 23:45 -

Room therm. 1 ... 5 Room thermostat option (1 ... 5) Yes, No No RTH sen. RTH sensor input selection system dependent system dependent TRoom. Room temperature 10 ... 30 °C [50 ... 86 °F] 18 °C [64 °F] Timer RTH timer Yes, No, Inactive No

Days of the week Day selection

External switch sensor input selection

Remote control sensor input selection

system dependent system dependent

All days, Monday ... Sunday, Continue

Adjustment channel Description Adjustment range / selection Factory setting Timer Time frame adjustment 00:00 ... 23:45 Correction Correction 1 ... 20 K [2 ... 40 °Ra] 5 K [10 °Ra] Relay RTH relay selection system dependent system dependent RTH Room thermostat Activ., Deactivated Deactivated Afterheating Afterheating option Yes, No No Mode Afterheating mode Therm., Boiler Therm. Relay Afterheating relay selection system dependent system dependent Sensor 1 Afterheating sensor 1 selection system dependent system dependent Sensor 2 Afterheating sensor 2 selection system dependent system dependent Loading pump Loading pump option Yes, No No Relay Loading pump relay selection system dependent system dependent Overrun time Loading pump overrun time 0 ... 300 s 60 s Acti... Activation / Deactivation Activ., Deactivated Deactivated

∆To n ∆Toff

Switch-on temperature difference -15.0 ... +44.5 K [-30.0 ... +89.0 °Ra] 5.0 K [10.0 °Ra]

Switch-off temperature difference -14.5 ... +45.0 K [-29.0 ... +90.0 °Ra] 15.0 K [30.0 °Ra] Function Function activated / deactivated Activ., Deactivated Deactivated Interval Mixer interval 1 ... 20 s 4 s Runtime Mixer runtime 10 ... 600 s 240 s

Offset

Automatic adaption of the mixer

runtime

- -

Time Adjustment time 00:00 ... 23:45 23:30 Chimney sweeper Chimney sweeper function Yes, No No Frost protection Antifreeze option Yes, No Yes Sensor Antifreeze option sensor Flow, Outdoor Flow Antifreeze Antifreeze temperature -20 ... +10 °C [-4 ... +50 °F] +4 °C [+40 °F] Runtime Antifreeze runtime 15 ... 240 s 30 s DHW priority DHW priority option Yes, No No Funct. Activation / Deactivation Activ., Deactivated Deactivated

Chimney sweeper function

The chimney sweeper function can be used for enabling a quick access to measurement conditions without menu operation for the chimney sweeper.

If the chimney sweeper function is activated, the chimney sweeper mode can be accessed by pressing button

for 5 seconds.

In the chimney sweeper mode, the heating circuit mixer closes, the loading pump and the backup heating contact are activated. While the chimney sweeper mode is active, the directional pad is illuminated. Additionally, Chimney sweeper and a countdown of 30 minutes are indicated on the display.

When the countdown has elapsed, the chimney sweeper mode is automatically deactivated. If, during the countdown, button

is again pressed for more

than 10 seconds, the countdown starts again. In order to abort the countdown and thus deactivate

the chimney sweeper mode, briey press button

10.3 Optional functions

In this menu, additional functions can be selected and adjusted for the heating part of the arrangement.

By selecting Add new function..., different pre-programmed functions can be selected. The optional functions are available as long as free relays are available.

With this menu item, an backup heating demand relay can be allocated to the function. All free relays are available for selection.

In the submenu Controller, all free relays of the controller are displayed. If external modules are connected and registered, their relays will be displayed in corresponding submenus.

With the menu item Function, an optional function already selected can be temporarily deactivated or reactivated respectively. All adjustments remain stored, the allocated relays remain occupied and cannot be allocated to another function.

When a function is selected, a submenu opens in which all adjustments required can be made.

With this submenu, a relay and, if necessary, certain system components can be allocated to the function.

The menu item Demand is available in all optional heating functions. Therefore, it will not be explained in the individual function descriptions.

When a function has been selected and adjusted, it will appear in the Opt. functions above the menu

item Add new function....

This allows an easy overview of functions already activated.

An overview about which sensor has been allocated to which component and which relay has been allocated to which function is given in the Status / Service menu.

At the end of each optional function submenu, the menu items Function and Delete function are available.

If the menu item Delete function is conrmed by pressing button

, a security enquiry appears. The setting can be changed between Yes and No by pressing buttons and 4. If Ye s has been selected

and conrmed by pressing button 5, the function

is deleted and available under Add new function... again. The corresponding relays are available again.

Thermal disinfection

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 allocated sensor has to be monitored. This protection is ensured when, during the monitoring period, the disinfection temperature is continuously exceeded for the entire disinfection period.

If the thermal disinfection function is activated, the monitoring period starts as soon as the temperature at the allocated sensor falls below the disinfection temperature. When the monitoring period ends, the allocated reference relay activates the backup heating. The disinfection period starts to count as soon as the temperature at the allocated sensor exceeds the disinfection temperature.

If the temperature at the allocated sensor exceeds the disinfection temperature by more than 5 K [10 °Ra], the reference relay switches off until the temperature has fallen below a value of 2 K [4 °Ra], above the disinfection temperature.

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

If the disinfection conditions have been fullled by

solar loading before the monitoring period ends, thermal disinfection is considered complete and a new monitoring period begins.

Due to the exible control logic, the exact time of

thermal disinfection is not predictable. In order to set

a xed time for the disinfection to be run, the starting

delay must be used:

If the starting delay option Starting time 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 energized with a delay of 6 hours at 18:00 instead of 12:00 o'clock.

If, during the waiting time, the disinfection conditions

are fullled by solar loading, thermal disinfection is

considered complete and a new monitoring period begins.

Heating / Opt. functions / Add new function... / Th. disinfection

Adjustment channel Description Adjustment range / selection Factory setting Demand Demand relay selection system dependent system dependent Circulation pump Circulation pump option Yes, No No Relay Circulation pump relay selection system dependent system dependent Sensor Disinfection sensor selection system dependent system dependent Monit. Monitoring period 0 ... 30:1 ... 23 (dd:hh) 01:00 (1 day) Temperature Disinfection temperature 45 ... 90 °C [114 ... 194 °F] 60 °C [140 °F] Duration Disinfection period 0.5 ... 24.0 h 1 h Start. time Starting delay option Yes, No No Start. time Starting point 00:00 ... 23:30 20:00 Function Activation / Deactivation Activ., Deactivated Deactivated

DHW heating

Boiler mode:

If the Boiler mode has been selected, another sensor can be allocated in the channel Sensor 2. The switchon, or the switch-off conditions respectively, then have

to be fullled at both sensors in order for the relay

to be energized.

The DHW heating is used to demand an backup heating for heating the DHW store.

If the Loading pump option is activated, another adjustment channel appears, in which a relay can be allocated to the loading pump. The allocated relay is switched on and off with the demand relay.

If the Overrun time option is activated, another adjustment channel appears, in which the overrun time can be adjusted. If the overrun time option is activa-

ted, the loading pump relay remains switched on for the adjusted Duration after the demand relay has been switched off.

For the DHW heating, different modes are available: Thermal mode: The allocated demand relay is switched on when the

temperature at the allocated sensor 1 falls below the adjusted switch-on temperature. If the temperature at the allocated sensor 1 exceeds the adjusted switch-off temperature, the relay is switched off.

When the Timer option is activated, a timer is indicated in which time frames for the function can be adjusted.

or 4.

In order to adjust the timer, press button

The time frames can be adjusted in steps of 15 minutes. The cursor can be moved along the time line by pressing buttons frame can be determined by pressing button

or 4. The beginning of a time

. The end of a time frame can be determined by pressing button 3.

Heating / Opt. functions / Add new function... / DHW heating

adjustment channel Description Adjustment range / selection Factory setting Demand Demand relay selection system dependent system dependent Loading pump Loading pump option Yes, No No Relay Loading pump relay selection system dependent system dependent Overrun time Overrun option Yes, No No Duration Overrun time 1 ... 10 min 1 min Mode Operating mode Boiler, Therm. Therm. Sensor 1 Sensor 1 system dependent system dependent Sensor 2 Sensor 2 (only if Mode = Boiler) system dependent system dependent To n Switch-on temperature 0 ... 94 °C [32 ... 202 °F] 40 °C [104 °F] Toff Switch-off temperature 1 ... 95 °C [34 ... 204 °F] 45 °C [114 °F] Timer Timer option Yes, No No Timer Timer - -

Days of the week Day selection

Timer Time frame adjustment 00:00 ... 23:45 Funct. Activation / Deactivation Activ., Deactivated Deactivated

All days, Monday ... Sunday, Continue

11 HQM

In the HQM menu, up to seven internal heat quantity measurements can be activated and adjusted.

By selecting the menu item New HQM, a new heat quantity measurement can be activated.

A menu opens in which all adjustments required for the heat quantity measurement can be made.

If the Flow rate sensor option is activated, the impulse input or, if available, a Grundfos Direct Sensor™ can be selected. Grundfos Direct Sensors™ are only available if they have been previously registered in the In-/Outputs menu. The impulse rate must be adjusted in that menu as well.

If the Flow rate sensor option is deactivated, the controller calculates the heat quantity by means of a

xed ow rate value. This is called heat quantity balancing. For this purpose, the ow rate must be read from the owmeter at 100 % pump speed and adjusted in

the adjustment channel Flow rate. In addition to that, a Relay must be allocated. Heat quantity balancing is in effect whenever the allocated relay is active.

In the adjustment channel Fluid type, the heat trans-

fer uid must be selected. If either Propylene glycol

or Ethylene glycol is selected, the adjustment channel Ratio is indicated in which the antifreeze ratio of the

heat transfer uid can be adjusted.

When the Alternative unit is activated, the controller will convert the heat quantity into the quantity of fossil fuels (coal, oil or gas) saved, or the CO emission saved respectively. The alternative Unit can be selected. A conversion Factor must be adjusted for the calculation. The conversion factor depends on the arrangement in use and has to be determined individually.

Heat quantity measurements already activated will appear in the HQM menu above the menu item New HQM in numerical order.

The heat quantity measurement deleted will disappear from the list and become available for selection in the New HQM menu again. The numeration of the other activated heat quantity measurements will not change.

HQM / New HQM

Adjustment channel Description Adjustment range / selection Factory setting Flow sen. Flow sensor selection system dependent system dependent Return sen. Return sensor selection system dependent system dependent Flow rate sen. Flow rate sensor option Yes, No No

Flow rate sen. Flow rate sensor selection

Imp1 ... Imp3, Ga1, Ga2, Gd1, Gd2

Flow rate Flow rate (only if Flow rate sen. = No) 1.0 ... 500.0 l/min 3.0 l/min Relay Relay selection system dependent system dependent

Fluid type Heat transfer uid

Tyfocor LS, Propyl., Ethyl., Water

Water

Glycol ratio in the heat transfer uid

Ratio

(only if Fluid type = Propylene glycol

5 ... 100 % 40 %

or Ethylene glycol) Alternative unit Alternative unit option Yes, No No Unit Alternative display unit Coal, Gas, Oil, CO

Factor Conversion factor 0.01 ... 100.00 0.50 Funct. Activation / Deactivation Activ., Deactivated Deactivated

If an activated heat quantity measurement is selected, the above mentioned menu with all adjustment values will re-open.

To deactivate a heat quantity measurement, select the menu item Delete function at the bottom of the menu.

12 Basic settings

13 SD card

In the Basic settings menu, all basic parameters for the controller can be adjusted. Normally, these settings have been made during commissioning. They can be subsequently changed in this menu.

Basic settings

Adjustment channel Description Adjustment range / selection Factory setting Language Selection of the menu language Deutsch, English, Francais Deutsch Auto DST Daylight savings time selection Yes, No Yes Date Adjustment of the current date 01.01.2001 ... 31.12.2099 01.01.2010 Time Adjustment of the current time 00:00 ... 23:59 Temp. Unit Temperature unit °C, °F °C Vol. unit Unit of volume Gallons, Litre Litre Press. unit Unit of pressure psi, bar bar Energy unit Energy unit Wh, BTU Wh Factory setting back to factory settings Yes, No No

The controller is equipped with an SD card slot for SD memory cards.

The following functions can be carried out with an SD card:

• Logging measurement and balance values. The values can be opened and visualized on a computer, e. g. in a spreadsheet programme.

• Transferring adjustments and parameterizations prepared on the computer onto the controller.

• Storing adjustments and parameterizations onto the SD card and restoring them if necessary.

• Run rmware updates onto the controller.

Firmware updates

When an SD card with a rmware update is inserted,

the enquiry Update? is indicated on the display. The setting can be changed between Yes and No by pressing buttons

Î To run the update, select Yes and conrm by

pressing button

The update is run automatically. The indication Ple- ase wait and a progress bar appear on the display. When the update has been completed, the controller will automatically reboot and run a short initialization phase.

Î To skip the update, select No.

The controller commences normal operation.

and 4.

Note:

The controller will only nd a rmware

update on an SD memory card when it is

stored on the rst level of the SD card.

Starting the logging

Î Insert the SD card into the slot Î Adjust the desired logging type and interval

Logging will start immediately.

Stop the logging

Î Select the menu item Remove card... Î After Remove card is displayed, remove the

card from the slot

When Linear is adjusted in the adjustment channel Logging type, data logging will stop if the capacity limit is reached. The message Card full will be displayed.

If Cyclic is adjusted, the oldest data logged onto the SD card will be overwritten as soon as the capacity limit is reached.

Note: Because of the increasing size of the data

packets, the remaining logging time does not decrease linearly. The data packet size can increase, e. g. with the increasing operating hours value.

Storing controller adjustments

Î To store the controller adjustments on an SD

card, select the menu item Save adjustments.

While the adjustments are being stored, rst Please wait, then Done! will be indicated on the display. The

controller adjustments are stored as a .SET le on

the SD card.

Loading controller adjustments

Î To load controller adjustments from an SD card,

select the menu item Load adjustments.

The File selection window is indicated.

Î Select the desired .SET le.

While the adjustments are being loaded, rst Please wait, then Done! will be indicated on the display.

Formatting the SD card

Î Select the menu item Format card

The content of the card will be deleted and the card

will be formatted with the FAT le system.

SD card

Adjustment channel Description Adjustment range / selection Factory setting Remove card... Safely remove card - Save adjustments Save adjustments - Load adjustments Load adjustments - Logging interval Logging interval 00:01 ... 20:00 (mm:ss) 01:00 Logging type Logging type Cyclic, Linear Linear Format card Format card - -

Note: To safely remove the SD card, always select

the menu item Remove card... before re- moving the card.

14 Manual mode

In the Manual mode menu, the operating mode of all relays in the controller and in connected modules can be adjusted.

All relays are displayed in numerical order, rst those

of the controller, then those of the individual modules connected. Modules are listed in numerical order.

Under the menu item All relays..., all relays can be switched off (Off) or set to automatic mode (Auto) at once.

Off = Relay is switched off (manual mode) Auto = Relay is in automatic mode

The operating mode can be selected for each individual relay, too. The following options are available:

Off = Relay is switched off (manual mode) Min. = Relay active with minimum speed

(manual mode) Max. = Relay active at 100 % speed (manual mode) Auto = Relay is in automatic mode

Note: Always adjust the operating mode back to

Auto when the control and service work is completed. Otherwise normal operation will not be possible.

Manual mode

Adjustment channel Description Adjustment range / selection Factory setting Relays R1 ... X Operating mode selection Max, Auto, Min, Off Auto All relays... Operating mode selection for all

relays

Auto, Off Off

15 User code

16.1 Modules

In the User code menu, a user code can be entered. Each number of the 4-digit code must be individually

adjusted and conrmed. After the last digit has been conrmed, the menu automatically jumps to the supe-

rior menu level. To access the menu areas of the expert level, the ex-

pert user code must be entered: Expert user code: 0262

For safety reasons, the user code should generally be set to the customer code before the controller is handed to the customer!

Customer user code: 0000

16 In- / Outputs

In the In- / Outputs menu, external modules can be registered, sensor offsets can be adjusted and relay

outputs can be congured.

In this menu, up to 5 external modules can be registered.

All modules connected and acknowledged by the controller are available.

Î To register a module, select the corresponding

menu item by pressing button

The checkbox indicates the selection. If a module is registered, all its sensor inputs and relay outputs will be available in the corresponding controller menus.

In- / Outputs / Modules

Adjustment channel Description Adjustment range / selection Factory setting Module 1 ... 5 Registering external modules - -

16.2 Inputs

In this submenu, the type of the sensor connected can be adjusted for each individual input. The following types can be selected:

• Switch

• KTY

• Pt500

• RTA11M

• Pt1000

• None

ATTENTION! System damage!

Selecting the wrong sensor type will lead to unwanted controller actions. In the worst case, system damage can occur!

Î Make sure that the right

sensor type is selected for each input!

If KTY, Pt500 or Pt1000 are selected, the channel Offset appears, in which an individual offset can be adjusted for each sensor.

Î In order to adjust the offset, select the corres-

ponding menu item by pressing button

In- / Outputs / Inputs

Adjustment channel Description Adjustment range / selection Factory setting S1 ... S12 Sensor input selection - -

Type Sensor type selection

Switch, KTY, Pt500, RTA11M, Pt1000, None

Pt1000

Offset Sensor offset -5.0 ... +5.0 K [-10.0 ... +10.0 °Ra] 0.0 K [0.0 °Ra]

Imp. 1 ... 3 Sensor type selection Imp 1 ... 3

Impulse, Switch, KTY, Pt500, RTA11M, Pt1000, None

Impulse

Vol./Imp. Impulse input selection - -

Type Sensor type selection

Impulse, Switch, KTY, Pt500, RTA11M, Pt1000, None

Impulse

CS10 CS10 input - Type CS type A ... K E Offset Delete offset Yes, No No Ga1, 2 Analog Grundfos Direct Sensor Type Grundfos Direct Sensor Gd 1,2 Digital Direct Sensor

Type Grundfos Direct Sensor

type RPS, VFS, None None

- -

type - -

type RPD, VFD, None None Min. Minimum pressure (if Type = RPS) 0.0 ... 0.5 bar 0.0 bar Max. Maximum pressure (if Type = RPS) 0.1 ... 16.0 bar 0.6 bar Min. Minimum ow rate (if Type = VFS) 1 ... 39 l/min 2 l/min Max. Maximum ow rate (if Type = VFS) 2 ... 400 l/min 40 l/min

Î To adjust the sensor offset, select the desired va-

lue by pressing buttons by pressing button

or 4, then conrm

Î Conrm the reset enquiry with Ye s Î Select back to return to the Inputs menu,

then connect the CS sensor

CS sensor offset

If a CS10 irradiation sensor is to be connected, an offset has to be carried out before the connection is made. To carry out the offset, proceed as follows:

Î Adjust the CS type in the Type channel Î Select the Offset channel

Note:

If Grundfos Direct Sensors TM are used, connect the sensor grounding common terminal block with the protective grounding conductor (see chap. 2.2).

16.3 Outputs

In this menu, the signal type and the minimum speed can be adjusted for each individual relay of the controller and the external modules.

Î In order to make adjustments for a relay, select the

corresponding menu item by pressing button

For each relay, the signal type and the minimum pump speed can be adjusted.

The signal type determines the way speed control of a connected pump is effected. The following modes are available:

Adapter = speed control signal via a VBus

interface adapter 0-10 V = speed control via a 0-10 V signal PWM = speed control via a PWM signal Standard = pulse packet speed control

(factory setting) With the signal types Adapter, 0-10 V and PWM, the

relay itself is not involved in speed control. A seperate connection for the corresponding signal will have to

be made (see gure).

/ PWM

In order to reduce the number of switching processes

for high-efciency pumps, the controller is equipped

with a relay overrun function that automatically comes into effect when the speed control signal is not issued by the relay itself. The corresponding relay will then remain switched on for an hour after the switch-

off conditions are fullled.

In- / Outputs / Outputs

Adjustment channel Description Adjustment range / selection Factory setting R1 ... R13 Relay output selection - -

Signal Signal type Adapter, 0-10 V, PWM, Standard Standard Output PWM output selection 17,18,19,20 Prole PWM characteristic curve A,B,C,D,E,F A Min speed Minimum speed 30 ... 100 % 30 %

If PWM is selected, the channels Output and Proleappear. In the Output channel, one of the 4

PWM outputs can be selected. In the Prole channel,

a PWM characteristic curve corresponding with the pump in use can be selected (see page 75).

Example of the electrical connection of a high-efciency pump

16.4 PWM-Proles

Solar PM Profile

PWM A (e. g. manufacturer WILO)

max

PWM D (e. g. manufacturer WILO)

max

If PWM pumps are used, the lowest adjustment value of the minimum speed cannot be lower than 20 %. If a Laing pump (PWM C) is used, the PWM start impulse has to be higher than 25% to enable a minimum pump speed of less than 25%.

min

127

100

PWM B (e. g. manufacturer Grundfos)

100

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100

PWM %

PWM C (e. g. manufacturer Laing)

RPM

Max rpm

Min rpm

Fin

Début

20%No PWM

50%

PWM %

duty %

min

100

PWM E (e. g. manufacturer Grundfos)

OEM STANDARD PROFILE

OEM SOLAR PM-Profile

Max Speed

100

95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10

5 0

0 10 20 30 40 50 60 70 80 90 100

PWM_IN %

Std PWM

PWM_IN 0 t/T [%]

PWM F (e. g. manufacturer Laing)

RPM

Max rpm

Min rpm

Fin

Début

80%

No PWM

50%

75%

Note:

PWM %

duty %

17 Troubleshooting

If a malfunction occurs, a message will appear on the display of the controller.

fuse

WARNING!

Electric shock!

Upon opening the housing, live parts are exposed.

Î Always disconnect the controller from power supply

before opening the housing!

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

Directional pad ashes red.

°C °F Ω

-10 14 481 961 1499 55 131 607 1213 2502

-5 23 490 980 1565 60 140 616 1232 2592 0 32 500 1000 1633 65 149 626 1252 2684 5 41 510 1019 1702 70 158 636 1271 2778

10 50 520 1039 1774 75 167 645 1290 2874 15 59 529 1058 1847 80 176 655 1309 2971 20 68 539 1078 1922 85 185 664 1328 3071 25 77 549 1097 2000 90 194 634 1347 3172 30 86 559 1117 2079 95 203 683 1366 3275

35 95 568 1136 2159 100 212 693 1385 3380 40 104 578 1155 2242 105 221 702 1404 3484 45 113 588 1175 2327 110 230 712 1423 3590 50 122 597 1194 2413 115 239 721 1442 3695

Sensor fault. The error code !Sensor fault is displayed instead of a temperature on the sensor display channel.

Short circuit or line break

Disconnected temperature sensors can be

checked with an ohmmeter. Please check the resis-

tance values corresponding with the table.

°C °F Ω

Pt500ΩPt1000

KTY

Pt500ΩPt1000

KTY

The display is permanently off.

Press button 5. Display illuminated?

Check the power supply of the controller. Is it disconnected?

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

yes

Controller has been in standby, everything o.k.

yes

Check the supply line and reconnect it.

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

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

Air or gas bubbles in the system?

no yes

Is the collector circuit blocked at

the dirt trap?

yes

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

Vent the system; increase the system pressure to a static primary pressure of at least plus 0.5 bar (7.25 psi); if necessary continue to increase pressure; switch the pump off and on for a short time.

Clean dirt trap

Pump starts up very late.

Switch-on temperature diffe-

rence ∆Ton too large?

no yes

Non-ideal position of the

collector sensor (e.g. atscrew

sensor instead of sensor in immersion sleeves).

yes

Change ∆Ton and ∆Toff

correspondingly.

Activate evacuated tube collector function if necessary.

o.k.

Temperature difference at the

controller too small?

no yes

Wrong position of collector

sensors?

Plausibility control of the option evacuated tube collector special function

yes

Change ∆Ton and ∆Toff

correspondingly.

no OK

Mount the collector sensor at

solar ow (warmest collector

output); use immersion sleeve of the respective collector.

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

Collector circuit pump defec-

tive?

no yes

Heat exchanger calcied?

Heat exchanger blocked?

Heat exchanger too small?

yes

Check / replace it

Decalcify it

Clean it

Replace with correctly sized one.

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

Display illuminated? If not, press button 5. Display illuminated now?

yes no

Does the pump start up in manual operation?

Is the pump current enabled by

the controller?

yes

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

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

Is the pump stuck?

Turn the pump shaft using a screwdriver; now passable?

Controller might be defective

- replace it.

yes

Stores cool down at night.

Collector circuit pump runs

during the night?

no yes

Collector temperature at night is higher than the outdoor temperature.

no yes

Sufcient store insulation?

yes no

Insulation close enough to the

store?

yes no

Are the store connections

insulated?

yes no

Warm water outow upwards?

no yes

Check controller

Check the non-return valves in

the ow and the return pipe for

functional efciency.

Increase insulation.

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.

Does the warm water circula-

tion 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

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

Use the circulation pump with

timer and switch-off thermostat

(energy efcient circulation).

Check whether the pumps of the

backup heating circuit run at night;

check whether the non-return valve

is defective; problem solved?

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

Clean or replace it.

18 Accessories

18.1 Sensors and measuring instruments

Temperature sensors

The product range includes high-precision platinum temperature sensors, atscrew sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip-on sensors, also as complete sensors with immersion sleeve.

Overvoltage protection device

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

SP10 Article no.: 180 110 70

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 dry contact 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. Depending on the controller and the sensors connected, different fault conditions can be signaled, e. g. sensor failures, excess or negative system pres-

sure as well as errors in the ow rate, such as a dry

run of the pump. The AM1 Alarm module ensures that occurring failu-

res can be immediately recognised 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.

AM1 Article no.: 180 008 70

VFS and RPS Grundfos Direct Sensors

The RPS Grundfos Direct SensorTM is a sensor for measuring the temperature and the pressure.

The VFS Grundfos Direct Sensor

is a sensor for

measuring the temperature and the ow rate.

RPS 0-10 bar Article no.: 130 000 47 VFS 1-12 analog Article no.: 130 000 27 VFS 2-40 analog Article no.: 130 000 37

V40owmeter

The V40 is a measuring instrument for detecting the

ow of water or water/glycol mixtures. After a specic volume has passed, the V40 reed switch sends an

impulse to the calorimeter. The heat quantity used is calculated by the calorimeter using these impulses and the measured temperature difference with the help

of pre-dened parameters (glycol type, concentration,

heat capacity, etc.). V40 Article no.: 280 011 00

18.2 VBus® accessories

18.3 Interface adapters

Smart Display SD3 / Large Display GA3

The Smart Display is designed for simple connection to controllers with VBus

. It is used for visualizing 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 and good readability even in poor visibility conditions and from a larger distance. An additional power supply is not required. One module is required per controller.

The GA3 is a completely mounted large display module for visualization 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-segmentdisplays. An easy connection to all controllers with

VBus

is possible. The front plate is made of antire-

ective lterglass and is printed with a light-resistant

UV-lacquering. The universal VBus® allows the parallel connection of 8 large displays as well as additional VBus® modules.

SD3 °F Article no.: 180 007 77 SD3 °C Article no.: 180 004 90 GA3 °F Article no.: 180 007 87 GA3 °C Article no.: 180 006 50

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.

DL2 Article no.: 180 007 10

VBus® / USB & VBus® / LAN interface adapters

The new 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, visualizing and archiving as well as the parameterization of the controller via the VBus®. A full version of the ServiceCenter software is included.

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 parameterization 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®. A full version of the ServiceCenter software is included.

VBus

/ USB Article no.: 180 008 50

VBus

/ LAN Article no.: 180 008 80

19 Index

Antifreeze, solar optional function ............................ 39

Balance values ................................................................ 31

Bypass, solar optional function ................................... 35

Chimney sweeper function ......................................... 63

Circulation ...................................................................... 54

Collector cooling, cooling mode ............................... 41

Collector emergency temperature ........................... 32

Commissioning menu ................................................... 12

Controller adjustment, loading of ............................. 70

Controller adjustments, storing of ............................ 70

Cooling mode ................................................................ 41

CS-bypass ........................................................................ 37

CS-offset.......................................................................... 73

Data logging .................................................................... 70

Day/Night operation, heating circuit ......................... 60

DHW heating ................................................................. 66

Drainback option .......................................................... 44

∆T function ..................................................................... 57

Error messages .............................................................. 30

Error messages, acknowledgement of ...................... 30

External heat exchanger, solar optional function ... 43

Flow rate monitoring ................................................... 46

Flow r. monit., error message ..................................... 30

Formatting the SD card ............................................... 70

Function block ............................................................... 57

Fuse, replacing of ........................................................... 76

Heat dump ...................................................................... 46

Heat exchange ............................................................... 52

Heating circuits, internal .............................................. 60

Heating demands ........................................................... 60

Heating period thermal disinfection ......................... 65

Heat quantity measurement ....................................... 67

Irradiation switch .......................................................... 59

Mains connection ............................................................ 7

Manual mode .................................................................. 71

Meas. values .................................................................... 31

Message relay ................................................................. 51

Minimum collector limitation ..................................... 32

Mixer, optional arrangement function....................... 49

Modules, registration of ............................................... 72

Operating hours counter ............................................ 31

Operating mode, relays ................................................ 71

Parallel relay, optional arrangement function .......... 48

Parallel relay, solar optional function ........................ 40

Priority logic ................................................................... 33

Progression chart .......................................................... 31

PWM pump speed control.......................................... 74

Registering external modules ..................................... 72

Return preheating ......................................................... 56

Room thermostat ......................................................... 61

Sensor fault, error message ........................................ 30

Solar external heat exchanger ................................... 43

Solid fuel boiler .............................................................. 53

Store cooling, cooling mode ....................................... 41

Store loading .................................................................. 50

Store sequence control ............................................... 34

Store set temperature ................................................. 33

Summer mode ............................................................... 60

System cooling, cooling mode .................................... 41

Target temperature, solar optional function ........... 39

Technical data: .................................................................. 4

Thermostat function .................................................... 57

Tube collector function ................................................ 38

Twin pump ...................................................................... 45

User code ....................................................................... 72

Notes

Distributed by:

Important note

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

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

Note

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

The illustrations may differ from the original product.

Stiebel Eltron, Inc.

17 West Street | USA - West Hateld, MA 01088

Phone: (413) 247-3380 | Fax: (413) 247-3369

info@stiebel-eltron-usa.com

www.stiebel-eltron-usa.com

Imprint

This mounting- and operation manual including all parts is copyrighted. Another use outside the copyright requires the approval of Stiebel Eltron, Inc.. This es-

pecially applies for copies, translations, micro lms and the storage into electronic

systems.

Editor: Stiebel Eltron, Inc.

STIEBEL ELTRON SOM10 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual