How it Works
DE DIETRICH
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UNO-2
User Manual
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DE DIETRICH UNO-2, UNO-1 User Manual

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INISOL
Solar hot water tank
UNO/2 200, 300, 400, 500 UNO/1 200, 300, 400, 500
EN
C002636-B
User Guide
300024525-001-B
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: UNO/2 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.1.2 Electro-solar hot water tank: UNO/1 ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2 Main parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Setting the DHW tank outlet temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.1 Programming and setting the electrical back-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.2 Setting the thermostatic mixing valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5 Diemasol A solar regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.1 General description of how the unit operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.2 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.3 Adjustment keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5.4 LED message code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5.5 Measured values and adjustment parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6 Checking and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.1 Solar installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2 Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2.1 Magnesium anodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2.2 Safety valve or safety unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2.3 Descaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2.4 Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2.5 Vent device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.3 Solar circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Warranty certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2

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.
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
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 tank 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

3 Technical description

3.1 Technical specifications

3.1.1 Double coil hot water tank: UNO/2 ...

UNO/2 200 UNO/2 300 UNO/2 400 UNO/2 500
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 / Test conducted in accordance with the standard NF D 30-003 (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 m3/h (3) Values measured only on the back-up volume
litres 200 300 395 500 litres 95 105 165 180 litres 105 195 230 320
bar 10101010
°C 90 90 90 90
bar 10101010
litres 3.5 4.3 4.9 4.9
2
m
kPa 3.0 3.0 3.4 3.4
litres 3.8 8.1 8.1 10.3
2
m
kW 13.5 16 17.5 17.5
l/h 330 390 430 430
kW17.5212323
l/h 430 515 565 565
l/10 mm 170 190 305 325
kW 22 26 29 29
l/h 540 640 712 712
Wh/24h·L·K 0.20 0.20 0.19 0.15
0.52 0.65 0.72 0.72
0.75 1.2 1.2 1.5
3
/h
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
5

3.1.2 Electro-solar hot water tank: UNO/1 ...

Water content
Top up volume Solar volume
Max operating pressure, DHW
Solar exchanger
Water content Exchange surface
Cooling constant Cr *
Optional electrical back-up
Output of the electrical back-up Reheating time from 15 to 60°C
VDHW 40 night Domestic hot water storage temperature: 55 °C
VDHW 40 night + day Domestic hot water storage temperature: 55 °C
VDHW 40 night Domestic hot water storage temperature: 60 °C
VDHW 40 night + day Domestic hot water storage temperature: 60 °C
* Only in France / Test conducted in accordance with the standard NF D 30-003 (1) Daily water volume at 40°C on night heating only
Domestic cold water inlet 15 °C
(2) Daily water volume at 40°C on night heating + 2 hours on day
Domestic cold water inlet 15 °C
(3) Values measured only on the back-up volume
(1) (3)
(2) (3)
(1) (3)
(2) (3)
UNO/1 200 UNO/1 300 UNO/1 400 UNO/1 500
litres 200 300 395 500 litres 100 145 185 225 litres 100 155 210 275
bar10101010
litres 3.8 8.1 8.1 10.3
2
m
Wh/24h·L·K 0.23 0.20 0.19 0.15
kW 2.2 3.0 4.5 4.5
litres 160 225 300 415
litres 310 425 590 720
litres 185 260 345
litres 330 460 650
0.75 1.2 1.2 1.5
2 h 50 min 3 h 00 min 2 h 30 min 3 h 05 min
6
Composition of the NF CESI INISOL UNO 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.
CESI System Array of collectors Domestic hot water production Solar fluid
INISOL UNO/2
200-2
Number of
panels
1On roof
1
1
2On roof
Type of mounting
Roof-integral
Installation
(> 20°)
Roof-integral
Installation
(17°)
package /
Reference
ER 152
100014074
ER 153
100014075
ER 230
100014740
ER 154
100014076
DHW calorifier type
UNO/2 200
package /
Reference
ER 148
100014069
Volume
(litres)
200 Boiler
Back-up type
package /
Reference
EG 101
89807794
INISOL UNO/2
200-4
INISOL UNO/2
300-4
INISOL UNO/2
300-4
(Full package)
Roof-integral
2
2
2On roof
2
2
2On roof
2
3On roof
Installation
(> 20°)
Roof-integral
Installation
(17°)
Roof-integral
Installation
(> 20°)
Roof-integral
Installation
(17°)
Roof-integral
Installation
(> 20°)
ER 155
100014077
ER 231
100014741
ER 154
100014076
ER 155
100014077
ER 231
100014741
ER 140
100014061
ER 142
100014063
ER 156
100014078
UNO/2 200
UNO/2 300
UNO/2 300
ER 148
100014069
ER 149
100014070
Included in
the full
package
200 Boiler
300 Boiler
300 Boiler
EG 101
89807794
EG 101
89807794
Included in
the full
package
Roof-integral
INISOL UNO/2
300-6
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
3
3
Installation
(> 20°)
Roof-integral
Installation
(17°)
ER 157
100014079
ER 232
100014742
UNO/2 300
ER 149
100014070
300 Boiler
EG 101
89807794
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 UNO/2
400-4
INISOL UNO/2
400-6
2
2
3On roof
3
3

3.2 Main parts

Solar hot water tank
- Tank in enamelled steel
- Solar coil
- Insulation in CFC-free polyurethane foam
- External PVC casing - white
Roof-integral
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
UNO/2 400
UNO/2 400
ER 150
100014071
ER 150
100014071
400 Boiler
400 Boiler
EG 101
89807794
EG 101
89807794
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.
8

4 Setting the DHW tank outlet temperature

4.1 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:

4.2 Setting the thermostatic mixing valve

57
` By forcing contunuous heating by the resistor (off-peak hours
contact) for significant unforeseen needs.
` By programming the heating time outside off-peak periods (2
hours maximum according to the DHW volume at 40°C required) to compensate for the lack of sunshine in winter, for example. The programmed period outside off-peak hours must preferably be between 12 h and 18 h.
28
28. Domestic cold water inlet
57. DHW tank domestic hot water outlet
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.
C003732-A
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
9

5 Diemasol A solar regulator

M000392
M000391

5.1 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.
` 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).
` When the temperature in the collectors reaches the maximum
value (adjustment parameter CX, factory setting 100°C), the solar pump is triggered to cool the collectors. The pump continues to operate until the temperature in the collectors is lower than 5 K at parameter CX and/or the maximum storage temperature (80°C) is reached in the hot water storage tank. Regulation goes into cooling mode if the preparer tank temperature is exceeded. As soon as the temperature in the collectors drops below the temperature in the calorifier, the calorifier is cooled down to its set temperature. The installation is thus protected against overheating and repeated stoppages, allowing thus the prolonged absence of the user even in the summer period.

5.2 Start-up

%
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.
10
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.

5.3 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.

5.4 LED message code

2
1
3
DiemasolA_0004
Continuously green
PUMPE relay is closed. Regulation operating normally (System Operating). Solar system Operating. The temperature of the hot water tank (parameter TS) increases.
Continuously red
PUMPE relay is open. 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.
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
11

5.5 Measured values and adjustment parameters

Channel Abbreviation Range Increment Factory setting
Collector temperature
Tank 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.
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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.
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
13
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 tank 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
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
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
15

6 Checking and maintenance

6.1 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.

6.2 Tank

6.2.1 Magnesium anodes

The magnesium anode must be checked by a qualified professional at least every 2 years.

6.2.2 Safety valve or safety unit

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.

6.2.3 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.
It is imperative to drain the solar circuit before any work is
carried out.

6.2.4 Casing

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

6.2.5 Vent device

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

6.3 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.
16
Warranty
You have just purchased one of our appliances and we thank you for the trust you have placed in our products. Please note that your appliance will provide good service for a longer period of time if it is regularly checked and maintained. Your fitter and our customer support network are at your disposal at all times.
Warranty terms
Starting from the purchase date shown on the original fitter's invoice, your appliance has a contractual guarantee against any manufacturing defect.
The length of the guarantee is mentioned in the price catalogue. The manufacturer is not liable for any improper use of the appliance
or failure to maintain or install the unit correctly (the user shall take care to ensure that the system is installed by a qualified fitter). In particular, the manufacturer shall not be held responsible for any damage, loss or injury caused by installations which do not comply with the following:
- applicable local laws and regulations
- specific requirements relating to the installation, such as national and/or local regulations
- the manufacturer's instructions, in particular those relating to the regular maintenance of the unit
- the rules of the profession
The warranty is limited to the exchange or repair of such parts as have been recognised to be faulty by our technical department and does not cover labour, travel and carriage costs. The warranty shall not apply to the replacement or repair of parts damaged by normal wear and tear, negligence, repairs by unqualified parties, faulty or insufficient monitoring and maintenance, faulty power supply or the use of unsuitable fuel. Sub-assemblies such as motors, pumps, electric valves etc. are guaranteed only if they have never been dismantled.
Italy
The duration of our warranty is shown on the certificate delivered with the appliance.
Our liability as manufacturer may not be invoked in respect of incorrect use of the appliance, incorrect or insufficient maintenance thereof, or incorrect installation of the appliance (you must therefore ensure that installation and maintenance operations are carried out respectively by a qualified professional and by an after sales service company).
The legislation laid down by European Directive 99/44/EEC, transposed by Legislative Decree No. 24 of 2 February 2002 published in O.J. No. 57 of 8 March 2002, continues to apply.
Russia
The foregoing provisions in no way affect the rights of the consumer, which are guaranteed by the legislation of the Russian Federation as regards hidden defects.
The terms and conditions of warranty and the terms and conditions of application of the warranty are indicated on the warranty form.
The warranty shall not apply as regards the replacement or repair of wearing parts under normal use. Such parts include thermocouples, injection nozzles, flame control and ignition systems, fuses and gaskets.
Turkey
Due to the laws and regulations the product life for this product is 10 years. During that time the producer and/or the distributor has to provide after sales services and spare parts.
Other countries
The above provisions do not restrict the benefit of the legal laws regarding hidden defects applicable in the buyer's country.
France
The preceding dispositions are not exclusive of benefits for the purchaser of the legal guarantee as stated in Civil Code articles 1641 to 1648.
Poland
Warranty conditions are included in the warranty card.
Switzerland
The application of the warranty is subject to the terms and conditions of sale, delivery and warranty of the company marketing our products.
Belgium
The preceding dispositions about the contractual guarantee are not exclusive of profit if the need arises for the purchaser in Belgium of the applicable legal dispositions on hidden defects.
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
17

Warranty certificate

Date of purchase: .............................................................................
Name and address of the purchaser: ...............................................
..........................................................................................................
..........................................................................................................
..........................................................................................................
..........................................................................................................
..........................................................................................................
Tel.:...................................................................................................
Information on the appliance (to be found on the nameplate):
Model: ...............................................................................................
Serial number: ..................................................................................
Retailer's stamp:
18
06/02/12 - 300024525-001-B UNO/2 200, 300, 400, 500 - UNO/1 200, 300, 400, 500
19
DE DIETRICH THERMIQUE S.A.S
Ȼɢɡɧɟɫɰɟɧɬɪ©ɑɚɣɤɚɉɥɚɡɚª
ɊɨɫɫɢɹɝɆɨɫɤɜɚ
Ɂɭɛɚɪɟɜɩɟɪɟɭɥɨɤɞ
ɨɮɢɫ
+7 (495) 221-31-51
IT
DUEDI S.r.l.
www.duediclima.it
Distributore Ufficiale Esclusivo
De Dietrich-Thermique Italia
Via Passatore, 12 - 12010 San Defendente di Cervasca CUNEO
+39 0171 857170 +39 0171 687875 info@duediclima.it
ES
DE DIETRICH THERMIQUE Iberia S.L.U.
www.dedietrich-calefaccion.es
Av. Princep d’Astúries 43-45
08012 BARCELONA
+34 932 920 520 +34 932 184 709
© 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.
06/02/12
DE DIETRICH THERMIQUE
300024525- 001- B
57, rue de la Gare F- 67580 MERTZWILLER - BP 30
AD001-AG
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