DE DIETRICH BSCE, BSPE, BESCE User Manual

INISOL DUO E
DIETRISOL DUO E

Solar hot water calorifer

BSC...E - BSP...E - BESC...E

EN

M000773

User Guide

300027781-001-01

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.1 Symbols and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2.4 Compliance of design and manufacture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2.5 Electrical compliance / Marking 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2 Safety instructions and recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3 Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3.1 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3.1.1 Double coil hot water tank: BSC / BSP...E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3.1.2 Electro-solar hot water tank: BESC...E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.2 Main parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.3 Programming and setting the electrical back-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.4 Setting the thermostatic mixing valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

4 Diemasol A solar regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4.1 General description of how the unit operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4.2 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4.3 Adjustment keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

4.4 LED message code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

4.5 Measured values and adjustment parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5 Checking and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.1 Solar installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2 Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2.1 Magnesium anodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2.2 Safety valve or safety unit (on cold water inlet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2.3 Descaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2.4 Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.2.5 Vent device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.3 Solar circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

2

BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01

1Introduction

1.1 Symbols and abbreviations

In these instructions, various markings and pictograms are used to
draw your attention to particular information. In so doing, De Dietrich
Thermique S.A.S wishes to safeguard the user's safety, obviate
hazards and guarantee correct operation of the appliance.

Danger



Risk of a dangerous situation causing serious physical
injury.

Warning



Risk of a dangerous situation causing slight physical
injury.

1.2 General

Congratulations on choosing a De Dietrich product, a product of
quality. We strongly recommend that you read the following
instructions in order to guarantee the optimal operation of your
appliance. We are sure that you will not be disappointed and that it
will satisfy all of your expectations.

1.2.1 Manufacturer's liability

Our products are manufactured in compliance with the requirements
of the various applicable European Directives. They are therefore
delivered with 1 marking and all relevant documentation.

In the interest of customers, we are continuously endeavouring to
make improvements in product quality. All the specifications stated in
this document are therefore subject to change without notice.

Caution



Risk of material damage.

Specific information.



Reference

Z

Refer to another manual or other pages in this instruction
manual.

` DHW: Domestic hot water.

Our liability as the manufacturer may not be invoked in the following
cases:

` Failure to abide by the instructions on using the appliance.

` Faulty or insufficient maintenance of the appliance.

` Failure to abide by the instructions on installing the appliance.

1.2.2 Installer's liability

The installer is responsible for the installation and inital start up of the
appliance. The installer must respect the following instructions:

` Read and follow the instructions given in the manuals provided

with the appliance.

` Carry out installation in compliance with the prevailing

legislation and standards.

1.2.3 User's liability

To ensure the optimum operation of your appliance, we strongly
recommend that you abide by the following instructions:

` Read and follow the instructions given in the manuals provided

with the appliance.

` Call on qualified professionals to carry out installation and initial

start up.

1.2.4 Compliance of design and manufacture

This product conforms to the requirements of european directive 97 /
23 / EC, article 3, paragraph 3, on pressure equipment.

` Perform the initial start up and carry out any checks necessary.

` Explain the installation to the user.

` If a maintenance is necessary, warn the user of the obligation

to check the appliance and maintain it in good working order.

` Give all the instruction manuals to the user.

` Get your installer to explain your installation to you.

` To carry out inspections and maintenance required by a

qualified professional.

` Keep the instruction manuals in good condition close to the

appliance.

11/05/12 - 300027781-001-01 BSC...E - BSP...E - BESC...E

3

1.2.5 Electrical compliance / Marking

1

This product complies to the requirements to the european directives
and following standards:

• 2006/95/EC Low Voltage Directive

Reference Standard: EN 60.335.1.

• 2004/108/EC Electromagnetic Compatibility Directive
Reference Standards: EN 50.081.1 / EN 50.082.1 / EN 55.014.

2 Safety instructions and recommendations

2.1 Safety instructions

Any work on the installation must be done by a qualified



professional in compliance with the codes of practice and
according to the instructions provided.

2.2 Recommendations

Have the installation regularly serviced to guarantee that it operates
correctly over time.
It is essential to check the magnesium anode in the DHW tank and
the installation and heat transporting fluid pressure every two years.

Never cut the power to the solar control system, even



during extended absences. The control system protects
the installation against overheating in summer when it is
running.

During extended absences, we recommend lowering the set
point temperature in the solar DHW calorifier to 50°C. When the
user is present, the set point must be set to 60°C.

Never drain the installation. Do not replace or add water or



solar fluid to the installation. These actions must be carried
out by a qualified technician.

Do not modify the control system parameters unless fully



conversant with them.

4

BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01

3 Technical description

3.1 Technical specifications

3.1.1 Double coil hot water tank: BSC / BSP...E

BSC 300 E BSP 300 E BSP 400 E BSP 500 E

Water content

Top up volume
Solar volume

Max operating pressure, DHW

Boiler heat exchanger

Maximum operating temperature
Maximum operating pressure
Water content
Exchange surface

Pressure drop

Solar exchanger

Water content
Exchange surface

Performance

Primary temperature at 70 °C

Power exchanged

Flow per hour

(1) (3)

(1) (3)

Primary temperature at 80 °C

Power exchanged

Flow per hour

Flow in 10 minutes

(1) (3)

(1) (3)

(2) (3)

Primary temperature at 90 °C

Power exchanged

Flow per hour

(1) (3)

(1) (3)

Cooling constant Cr *

* Only in France
(1) Domestic cold water inlet 10 °C - Domestic hot water outlet 45 °C - Primary flow rate 2 m
(2) Domestic cold water inlet 10 °C - Domestic hot water outlet 40 °C - Domestic hot water storage temperature 65 °C - Primary flow rate 2 m
(3) Values measured only on the back-up volume

litres 300 300 370 500
litres 104 104 132 183
litres 196 196 238 317

bar 7 10 10 10

°C 90 90 90 90

bar 10101010

litres 4.3 4.3 4.9 4.9

2

m

kPa 3.0 3.0 3.4 3.4

litres 8.9 8.9 8.9 11.1

2

m

kW 16 16 17.5 17.5

l/h 390 390 430 430

kW 21 21 23 23

l/h 515 515 565 565

l/10 mm 190 190 240 335

kW 26 26 29 29

l/h 640 640 712 712

Wh/24h·L·K 0.20 0.20 0.19 0.15

0.65 0.65 0.72 0.72

1.2 1.2 1.2 1.5

3

/h

3

/h

11/05/12 - 300027781-001-01 BSC...E - BSP...E - BESC...E

5

3.1.2 Electro-solar hot water tank: BESC...E

BESC 300 E BESC 400 E BESC 500 E

Water content

Top up volume
Solar volume

Max operating pressure, DHW

Solar exchanger

Water content
Exchange surface

Electrical back-up

Output of the electrical back-up
Reheating time from 15 to 60°C

Cooling constant Cr *

* Only in France

 Composition of the NF CESI INISOL DUO solar systems packages (for France only)

litres 300 370 500
litres 130 160 210
litres 170 210 290

bar 7 7 7

litres 8.9 8.9 11.1

2

m

kW 2.4 3.0 3.5

Wh/24h·L·K 0.20 0.19 0.15

1.2 1.2 1.5

2 h 50 min 2 h 50 min 3 h 10 min

Check the composition of the CESI solar system, which complies
with the requirements of the NF CESI mark, using the table below.
The references and packages listed must be shown on the invoice for
the system sold by the installer.

A system is complete and functional according to the NF CESI mark
if all system references appear on the invoice.
The system is composed of the following elements:

• A collector field with 1, 2 or 3 solar collectors.

• A solar domestic hot water tank to which a solar station
incorporating a heating pump, an expansion vessel and a
Diemasol A control system is to be mounted.

• The solar fluid that protects the installation from frost and
corrosion.

The system is delivered to the installer in two units: a roof pack
containing the collectors, their mounting system and the hydraulic
connections on the one hand, and a cellar pack containing the
calorifier, the system components and the solar fluid on the other
hand.

CESI System Array of collectors Domestic hot water production Solar fluid

INISOL DUO/1

300-4

Number of

panels

2On roof

2

2

2On roof

Type of mounting

Roof-integral

Installation

(> 20°)

Roof-integral

Installation

(17°)

package /

Reference

ER 154

100014076

ER 155

100014077

ER 231

100014741

ER 210

100015850

DHW calorifier type

BESC 300 E

package /

Reference

EC 332

100006750

Volume

(litres)

300 Electric

Back-up type

package /

Reference

89807794

EG 101

INISOL DUO/1

300-4

(Full package)

6

Roof-integral

2

2

Installation

(> 20°)

Roof-integral

Installation

(17°)

ER 211

100015851

ER 214

100016110

BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01

BESC 300 E

Included in

the full

package

300 Electric

Included in

the full

package

CESI System Array of collectors Domestic hot water production Solar fluid

Number of

panels

Type of mounting

3On roof

package /

Reference

ER 156

100014078

DHW calorifier type

package /

Reference

Volume

(litres)

Back-up type

package /

Reference

INISOL DUO/1

300-6

INISOL DUO/1

400-4

INISOL DUO/1

400-6

Roof-integral

3

Installation

(> 20°)

Roof-integral

3

Installation

(17°)

2On roof

Roof-integral

2

Installation

(> 20°)

Roof-integral

2

Installation

(17°)

3On roof

Roof-integral

3

Installation

(> 20°)

Roof-integral

3

Installation

(17°)

ER 157

100014079

ER 232

100014742

ER 154

100014076

ER 155

100014077

ER 231

100014741

ER 156

100014078

ER 157

100014079

ER 232

100014742

BESC 300 E

BESC 400 E

BESC 400 E

EC 332

100006750

EC 335

100006753

EC 335

100006753

300 Electric

400 Electric

400 Electric

EG 101

89807794

EG 101

89807794

EG 101

89807794

INISOL DUO/2

300-4

INISOL DUO/2

300-4

(Full package)

INISOL DUO/2

300-6

2On roof

Roof-integral

2

Installation

(> 20°)

Roof-integral

2

Installation

(17°)

2On roof

Roof-integral

2

Installation

(> 20°)

Roof-integral

2

Installation

(17°)

3On roof

Roof-integral

3

Installation

(> 20°)

ER 154

100014076

ER 155

100014077

ER 231

100014741

ER 212

100015852

ER 213

100015853

ER 215

100016111

ER 156

100014078

ER 157

100014079

BSC 300 E

BSC 300 E

BSC 300 E

EC 333

100006751

Included in

the full

package

EC 333

100006751

300 Boiler

300 Boiler

300 Boiler

EG 101

89807794

Included in

the full

package

EG 101

89807794

Roof-integral

3

Installation

(17°)

11/05/12 - 300027781-001-01 BSC...E - BSP...E - BESC...E

ER 232

100014742

7

CESI System Array of collectors Domestic hot water production Solar fluid

Number of

panels

2On roof

Type of mounting

package /

Reference

ER 154

100014076

DHW calorifier type

package /

Reference

Volume

(litres)

Back-up type

package /

Reference

INISOL DUO/2

400-4

INISOL DUO/2

400-6

Roof-integral

2

2

3On roof

3

3

Installation

(> 20°)

Roof-integral

Installation

(17°)

Roof-integral

Installation

(> 20°)

Roof-integral

Installation

(17°)

ER 155

100014077

ER 231

100014741

ER 156

100014078

ER 157

100014079

ER 232

100014742

BSP 400 E

BSP 400 E

EC 336

100006754

EC 336

100006754

400 Boiler

400 Boiler

 Composition of the NF CESI DIETRISOL DUO solar systems packages (for France only)

Check the composition of the CESI solar system, which complies
with the requirements of the NF CESI mark, using the table below.
The references and packages listed must be shown on the invoice for
the system sold by the installer.

A system is complete and functional according to the NF CESI mark
if all system references appear on the invoice.
The system is composed of the following elements:

• A collector field with 1, 2 or 3 solar collectors.

• A solar domestic hot water tank to which a solar station
incorporating a heating pump, an expansion vessel and a
Diemasol A control system is to be mounted.

• The solar fluid that protects the installation from frost and
corrosion.

The system is delivered to the installer in two units: a roof pack
containing the collectors, their mounting system and the hydraulic
connections on the one hand, and a cellar pack containing the
calorifier, the system components and the solar fluid on the other
hand..

EG 101

89807794

EG 101

89807794

CESI System Array of collectors Domestic hot water production Solar fluid

DIETRISOL DUO

E 300-4

Number of

panels

2

2

2

2

2

Type of mounting

On roof

(mechanical tiles -

Universal hook)

On roof
(Slates)

On roof

(mechanical tiles -

On rafter)

Roof-integral

Installation

(> 20°)

(mechanical tiles)

Roof-integral

Installation

(> 20°)

(Slates / Flat tile)

package /

Reference

ER 432

100019695

ER 433

100019696

ER 434

100019697

ER 442

100019705

ER 446

100019709

DHW calorifier type

BESC 300 E

package /

Reference

EC 332

100006750

Volume

(litres)

300 Electric

Back-up type

package /

Reference

EG 100

89807792

8

BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01

CESI System Array of collectors Domestic hot water production Solar fluid

Number of

panels

2

Type of mounting

On roof

(Delivered

vertically)

package /

Reference

EC 521

100007869

DHW calorifier type

package /

Reference

Volume

(litres)

Back-up type

package /

Reference

DIETRISOL DUO/

1 300-5

DIETRISOL DUO

E 400-4

On roof

2

(Delivered

horizontally)

EC 580

100009302

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 531

100007879

BESC 300 E

EC 332

100006750

300 Electric

EG 100

89807792

vertically)

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 586

100009308

horizontally)

On roof

2

(mechanical tiles -

Universal hook)

2

On roof
(Slates)

On roof

2

(mechanical tiles -

On rafter)

Roof-integral

2

Installation

(> 20°)

ER 432

100019695

ER 433

100019696

ER 434

100019697

ER 442

100019705

BESC 400 E

EC 335

100006753

400 Electric

EG 100

89807792

(mechanical tiles)

DIETRISOL DUO/

1 400-5

Roof-integral

2

Installation

(> 20°)

ER 446

100019709

(Slates / Flat tile)

On roof

2

(Delivered

vertically)

On roof

2

(Delivered

horizontally)

EC 521

100007869

EC 580

100009302

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 531

100007879

BESC 400 E

EC 335

100006753

400 Electric

EG 100

89807792

vertically)

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 586

100009308

horizontally)

11/05/12 - 300027781-001-01 BSC...E - BSP...E - BESC...E

9

CESI System Array of collectors Domestic hot water production Solar fluid

Number of

panels

3

Type of mounting

On roof

(mechanical tiles -

Universal hook)

package /

Reference

ER 435

100019698

DHW calorifier type

package /

Reference

Volume

(litres)

Back-up type

package /

Reference

DIETRISOL DUO

E 400-6

DIETRISOL DUO

300-4

3

On roof
(Slates)

On roof

3

(mechanical tiles -

On rafter)

Roof-integral

3

Installation

(> 20°)

ER 436

100019699

ER 437

100019700

ER 443

100019706

BESC 400 E

EC 335

100006753

400 Electric

EG 100

89807792

(mechanical tiles)

Roof-integral

3

Installation

(> 20°)

ER 447

100019710

(Slates / Flat tile)

On roof

2

(mechanical tiles -

Universal hook)

2

On roof
(Slates)

On roof

2

(mechanical tiles -

On rafter)

Roof-integral

2

Installation

(> 20°)

ER 432

100019695

ER 433

100019696

ER 434

100019697

ER 442

100019705

BESC 300 E

EC 332

100006750

300 Electric

EG 100

89807792

(mechanical tiles)

DIETRISOL DUO/

2 300-5

Roof-integral

2

Installation

(> 20°)

ER 446

100019709

(Slates / Flat tile)

On roof

2

(Delivered

vertically)

On roof

2

(Delivered

horizontally)

EC 521

100007869

EC 580

100009302

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 531

100007879

BSC 300 E

EC 333

100006751

300 Boiler

EG 100

89807792

vertically)

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 586

100009308

horizontally)

10

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CESI System Array of collectors Domestic hot water production Solar fluid

Number of

panels

2

Type of mounting

On roof

(mechanical tiles -

Universal hook)

package /

Reference

ER 432

100019695

DHW calorifier type

package /

Reference

Volume

(litres)

Back-up type

package /

Reference

DIETRISOL DUO

400-4

DIETRISOL DUO/

2 400-5

2

On roof
(Slates)

On roof

2

(mechanical tiles -

On rafter)

Roof-integral

2

Installation

(> 20°)

ER 433

100019696

ER 434

100019697

ER 442

100019705

BSP 400 E

EC 336

100006754

400 Electric

EG 100

89807792

(mechanical tiles)

Roof-integral

2

Installation

(> 20°)

ER 446

100019709

(Slates / Flat tile)

On roof

2

(Delivered

vertically)

On roof

2

(Delivered

horizontally)

EC 521

100007869

EC 580

100009302

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 531

100007879

BSP 400 E

EC 336

100006754

400 Boiler

EG 100

89807792

vertically)

DIETRISOL DUO

400-6

Roof-integral

Installation

2

(> 20°)

(Delivered

EC 586

100009308

horizontally)

On roof

3

(mechanical tiles -

Universal hook)

3

On roof
(Slates)

On roof

3

(mechanical tiles -

On rafter)

Roof-integral

3

Installation

(> 20°)

ER 435

100019698

ER 436

100019699

ER 437

100019700

ER 443

100019706

BSP 400 E

EC 336

100006754

400 Electric

EG 100

89807792

(mechanical tiles)

Roof-integral

3

Installation

(> 20°)

ER 447

100019710

(Slates / Flat tile)

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11

3.2 Main parts

 Solar hot water calorifer

- Tank in enamelled steel

- Solar coil

- Electrical resistor for heating the water

- Insulation in CFC-free polyurethane foam

-

Casing: Painted sheet steel

Solar station



The solar heating pump unit comprises the solar circuit safety unit, a
pressure and temperature gauge and a flowmeter to visualise
circulation of the solar fluid between the panels and the DHW tank.
An expansion vessel is connected to the solar unit; it is used to
compensate for the expansion of the solar fluid in which the
temperature varies between 0 and 150°C.



Diemasol A regulator

The control system is the solar system's brain; it makes the solar
heating pump run at variable speeds according to the difference in
temperature between the bottom of the DHW tank and the solar
panels. The control system manages the set point temperature
(temperature to be attained in the DHW tank), overheating and
nighttime cooling. The control system also displays the various
operating modes, the temperatures in the collectors and in the
bottom of the DHW tank, as well as signalling any malfunctions.

3.3 Programming and setting the electrical back-up

The temperature of the volume of water heated by the electrical
resistor is set by the installer on commissioning of the installation
according to the size of the home.

Using the programming device installed in the electrical panel, it is
possible to adjust the volume of water heated to 40°C by the resistor
in two ways:

` By forcing contunuous heating by the resistor (off-peak hours

` By programming the heating time outside off-peak periods (2

contact) for significant unforeseen needs.

hours maximum according to the DHW volume at 40°C
required) to compensate for the lack of sunshine in winter, for
example. With a back-up, the programmed period is set in the
factory to between 16 h and 18 h, i.e. at the end of the day when
the solar contribution is less and just before the draw-off period.



Ves 40 settings table

Ves 40: Volume of hot water at 40°C

BESC 300 E BESC 400 E

Ves 40 off-peak hours only (by 55°C) 190 litres 230 litres

40 off-peak hours + 2 peak hours (by 55°C) 350 litres 435 litres

Ves 40 off-peak hours only (by 60°C) 220 litres 270 litres

40 off-peak hours + 2 peak hours (by 60°C) 380 litres 470 litres

3.4 Setting the thermostatic mixing valve

57

28

28. Domestic cold water inlet

57. DHW tank domestic hot water outlet

12

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The mixing valve is set in the factory for a DHW outlet temperature of
60°C (position 6). To lower this temperature, remove the top cover
and turn the wheel anti-clockwise. In position 1, the outlet
temperature is lowered to 35°C.

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13

4 Diemasol A solar regulator

M000392

4.1 General description of how the unit operates

In automatic mode, the Diemasol A regulator operates in accordance
with the following principles:

` The sun's rays heat the transfer fluid in the collector. For the

regulation process to be triggered, a minimum temperature of
30 °C is required in the collector and there must be a
temperature difference of 10 K by comparison with the tank.

` During the AUTO-calibration stage which follows (tu parameter

setting tu, factory setting 1 minute) the PUMPE (relay) operates
to its full extent (100%).

` Subsequently, the solar pump regime is calculated dynamically

depending on a difference between the reference temperature
(parameter DT, factory setting 20 K) and the calorifier
temperature.

4.2 Start-up

%

If the temperature in the solar collectors is higher
than 130°C, the control system operates in safety mode.
Wait until the evening before start-up or cool down (cover)
the solar collectors.

` Depending on the heat available, the system heats up the solar

tank and cuts off when the tank storage temperature is reached
(adjustment parameter SX, factory setting: 60 °C)..

Switch on the device. The regulator starts an initialisation phase
during which the LED flashes red and green. When initialisation is
complete, the regulator changes to automatic mode. The factory
settings for this mode give optimum performance with most
installations.

If special conditions make it necessary to change the settings, the
corresponding adjustment parameters can be reset.

M000391

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4.3 Adjustment keys

The regulator is controlled by the 3 keys only located below the
display.

The right-hand key (1) takes you to the next menu or increases the
adjustment values.

The left-hand key (2) does the opposite.

The adjustment parameters are displayed after the measured values.
To access these parameters, press and hold the right-hand key for 2
sec. from parameter TC. When the display shows an adjustment
parameter, the word SET appears. To set the value displayed, press
the middle button (3).

1. Select the required parameter using keys 1 and 2.

2. Press the 3 key: The word SET flashes.

3. Adjust the value using keys 1 and 2.

4. Press the 3 key: The set value is stored. The word SET stops

flashing.

4.4 LED message code

2

1

3

DiemasolA_0004

 Continuously green

Regulation operating normally (System Operating). Solar system
Operating. The temperature of the hot water tank (parameter TS)
increases.



Continuously red

The installation is stopped. The solar collectors are not hot enough
(parameter TC) to enable operation.

Flashing green/red



- Initialisation phase

- Sensor fault.
See chapter Sensor fault.

- The installation is in manual mode.
Set the regulator to automatic mode.

- Maximum tank temperature exceeded.
The hot water tank has reached the set temperature and the
installation is in overheating safety mode or in cooling mode.

- Maximum temperature of the solar collectors exceeded.
The installation is in safety mode. It remains in this mode until the
temperature of the solar collectors has fallen back below the
maximum temperature.

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15

4.5 Measured values and adjustment parameters

Channel Abbreviation Range Increment Factory setting

Collector temperature

Calorifier temperature

Amount of heat

Pump regime

Self-calibration time

Reference temperature difference

Set temperature of the solar calorifier

Maximum collector temperature

Self-calibration phase

Pump minimum speed

Tubular solar collector function

Maximum flow rate

Manual mode

*with S3 sensor only (optional)

*

Measured values

Adjustment parameter

TC [-50.0 ... 250.0] °C - -

TS [-50.0 ... 250.0] °C - -

kWh [0 ... 9999] kWh - -

PC [0 ... 100] % - -

tc [0 ... 5] minutes - -

DT [10 ... 20] K 0.1 20

SX [20 ... 80] °C 0.1 60

CX [100 ... 125] °C 0.1 100 °C

tu [1 ... 5] minutes 1 1

PN [50 ... 100] % 5 50

FT [0 ... 1] 1 0

Fx [0 … 20] l/min 0.1 6.7

MM [0 ... 2] 1 2



The regulator has a safety system that cuts off the tank at
temperatures of over 80°C.

 Measured value TC - Collector temperature

The value TC shows the temperature in °C given by the collector
sensor in real time.



Measured value TS - DHW sensor temperature

The value TS shows the temperature in °C given by the tank sensor
in real time

Measured value kWh - Amount of heat



The value kWh shows in kWh the total amount of heat produced by
the installation since the regulator was put into service.

The quantity of heat (kWh value) can only be used for checks



carried out for personal reasons.



Measured value tc - Self-calibration time

The value tc shows the self-calibration phase time remaining in
seconds. During the self-calibration phase, the pump operates at full
speed (100 %); its speed is only controlled after the self-calibration
phase.

16

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 Adjustment parameter DT - Reference

M000395

temperature difference

M000393

Adjustment range: 10 ... 20 K
Factory setting: 20 K

Switching-on difference: Non-adjustable value 10 K



Switching-off difference: Non-adjustable value 5 K

The regulator reads the temperatures measured by sensors S1 (TC)
and S2 (TS) and compares the resulting temperature difference with
the switching-on difference which is preset to 10 K. Regulation is
activated when the temperature difference ∆T is equal to or greater
than the preset value. The display shows . The LED changes to
green. When the value falls below the preset 5 K switching-off
difference, the regulator switches off. The regulator tries to achieve a
temperature difference of 20 K (factory setting) between the collector
and the tank to produce high temperature hot water as rapidly as
possible. To do this, it uses dynamic speed control.



Adjustment parameter SX - Set temperature of the
solar calorifier

Adjustment range: 20 ... 80 °C
Factory setting: 60 °C

Maximum tank temperature (emergency cut-off): Non-



adjustable value 80 °C

The set temperature Sx is the desired temperature for the solar
calorifier.

If the maximum tank temperature is exceeded, tank heating is
interrupted to prevent damage due to overheating. The display
shows and (flashing) and the LED changes to flashing red/
green.

The higher the set temperature for the calorifier, the greater the
energy stored. Setting to 60 ... 75°C is suitable for normal use with
daily draw-offs.

In the event of prolonged absences (weekend, holidays):

- Reduce the calorifier temperature to 50°C

- Turn off the back-up (boiler or electrical resistance)

The installation is thus protected against overheating and the
longevity of the heat conducting fluid is conserved.

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17

 Adjustment parameter CX - Maximum collector

M000397

M000398

temperature



Adjustment parameter tu - Self-calibration phase

M000396

Adjustment range: 100 ... 125 °C
Factory setting: 100 °C

Maximum collector temperature (overheating safety): Non-



adjustable value: 130 °C.

If the temperature in the collector rises above its maximum
temperature CX even though the solar circuit is stopped (tank set
storage temperature reached), the solar pump (R1) switches on and
cools the collector (system cooling). In these conditions, the tank
temperature rises, but it can't exceed 80 °C (safety cut-off).

If the calorifier reaches the maximum temperature of 80°C (safety
shutdown), the regulator switches off the solar pump.

The collectors may reach a temperature of 160 ... 200°C, which



is normal for a solar installation.

The cooling functions allows heat to dissipate; the system thus
remains operational longer during hot summers. When it leaves the
factory, the collector's maximum temperature is preset to 100 °C;
however, it is possible to change this within the range 100 ... 125 °C.
If the maximum collector temperature is exceeded, the display shows

, and (flashing) and the LED changes to flashing red/

green.

Adjustment range: 1 ... 5 minutes
Factory setting: 1 minutes

When the solar collector reaches a minimum temperature of 30 °C
and a preset temperature difference of 10 K from the tank
temperature, the regulator switches on the solar circulating pump at
full speed for the time period set by parameter tu. During this phase,
any air bubbles present in the solar collectors or the pipes are moved
to the complete solar station by the high circulation speed in the pipes
and eliminated by the Airstop system (manual bleed degasser). After
this phase, the regulator changes to "matched flow" mode. The
remaining self-calibration time is displayed with parameter tc.



Adjustment parameter PN - Pump minimum
speed

Adjustment range: 50 ... 100%
Factory setting: 50%

Adjustment parameter PN sets a minimum value for the solar pump
speed at the relay R1 output. The lower the pump regime, the lower
its flow.

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 Adjustment parameter FT - Tubular solar collector

M000401

function

M000399

Adjustment range: 0/1
Factory setting: 0
0: no
1: yes

If the regulator detects a temperature rise in the collector of 2 K
compared to the last measurement, the solar pump runs at full speed
for 30 seconds to measure the current average temperature.

The measured temperature thus becomes the new reference
temperature.

If the measured temperature (new reference) then increases again
by 2 K, the solar pump starts again for 30 seconds.

The regulator switches automatically to solar heating mode if the
temperature difference between the collector and the calorifer
exceeds the switching-on temperature difference when the solar
pump is operating or the system is stopped.

If the collector temperature falls by 2 K while the system is stopped,
the tubular solar collector activation temperature is rechecked.

Tubular solar panels

Number of panels

minimum: 1x4 820 13.7

1x5 750 12.5

1x6 680 11.4



Adjustment parameter MM - Operating mode

Flow rate

l/h

Flow rate

l/min

Adjustment range: 0 ... 2
Factory setting: 2

For inspection and maintenance work, it is possible to operate the
regulator in manual mode. To operate the regulator in manual mode,
it is necessary to input parameter MM from the following table.

MM R1 LED

0 Open Flashing green/red

1 Closed Flashing green/red

2 automatic automatic



Adjustment parameter Fx - Maximum flow rate

M000400

Adjustment range: 0 ... 20 l/min
Factory setting: 6.7

In order for the regulator to calculate the quantity of heat produced by
the installation (parameter kWh), input parameter Fx. The parameter
Fx is equal to the flow in litres per minute in the solar circuit.
Determine the value Fx using the following tables, according to the
configuration of the installation and the number or surface area of the
collectors. When the flow is input incorrectly, the display kWh will also
be incorrect.

The quantity of heat (kWh value) can only be used for checks



carried out for personal reasons.

Flat solar panels

Solar panel
installation

11/05/12 - 300027781-001-01 BSC...E - BSP...E - BESC...E

Area

2

m

3 ... 5 1 or 2 400 6.7

6 ... 8 3 or 4 300 5

Number of

panels

Flow rate

l/h

Flow rate

l/min

19

5 Checking and maintenance

5.1 Solar installation

We recommend that you take out a preventive maintenance contract
to check the fluid level, antifreeze protection, pressure in the system,
leak test and general operation every year or every two years.

5.2 Tank

5.2.1 Magnesium anodes

Have the condition of the anode checked after the first year. The
magnesium anode must be checked by a qualified professional at
least every 2 years. After the first check, determine the frequency of
future checks on the basis of anode wear.

5.2.2 Safety valve or safety unit (on cold water inlet)

The valve or safety assembly must be operated at least once a
month in order to ensure that it is operating correctly and to prevent

possible overpressure which would damage the DHW tank.

5.2.3 Descaling

In hard water regions, it is advisable to ask the fitter to descale the
DHW tank exchanger once a year in order to maintain its level of
performance.

5.2.4 Casing

The casing of the DHW tank can be cleaned with soapy water.

5.2.5 Vent device

If the vent device is not used, the installer must check the seal on the
top vent connection.

5.3 Solar circuit

To check operation of the solar system, consult the display on the
control system. A steady red indicator light in fine weather indicates
a malfunction.

The pressure in the solar circuit can be checked on the solar station's
pressure gauge. If the pressure shown is lower than 0.5 bar, call the
installer.

Never carry out work on the solar circuit yourself. Never



work on the safety valve yourself.

20

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21

22

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23

@

DE DIETRICH THERMIQUE S.A.S

Ȼɢɡɧɟɫɰɟɧɬɪ©ɑɚɣɤɚɉɥɚɡɚª

ɊɨɫɫɢɹɝɆɨɫɤɜɚ

Ɂɭɛɚɪɟɜɩɟɪɟɭɥɨɤɞ

ɨɮɢɫ

[phone]

IT

DUEDI S.r.l.

www.duediclima.it

Distributore Ufficiale Esclusivo

De Dietrich-Thermique Italia

Via Passatore, 12 - 12010
San Defendente di Cervasca
CUNEO

[phone]
[phone]

duediclima.it

info

ES

DE DIETRICH THERMIQUE Iberia S.L.U.

www.dedietrich-calefaccion.es

Av. Princep d’Astúries 43-45

08012 BARCELONA

[phone]
[phone]

© Copyright

All technical and technological information contained in these technical instructions, as well as any
drawings and technical descriptions supplied, remain our property and shall not be multiplied
without our prior consent in writing.

Subject to alterations.

11/05/12

DE DIETRICH THERMIQUE

300027781- 001- 01

57, rue de la Gare F- 67580 MERTZWILLER - BP 30

AD001NU-AH