EAST COAST tr 0301 Operating instructions

SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO - SOLAIRE THERMIQUE
Operating instructions
Temperature differential controller
3 inputs, 1 output
709.752 | Z02 | 07.50 | Subject to change due to technical improvements!
EN
Operating instructions
These operating instructions are part of the product.
Read these operating instructions carefully before use,
keep them over the entire lifetime of the product,
and pass them on to any future owner or user of this product.
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2709.752 | 07.50
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Contents
1 About this manual ....................... 3
1.1 Applicability .....................................3
1.2 Users.................................................3
1.3 Description of symbols ....................4
2 Safety............................................ 5
2.1 Proper usage....................................5
2.2 Improper usage................................5
2.3 Dangers during installation and
commissioning.................................6
2.4 Detecting faults................................7
2.5 Exclusion of liability..........................7
3 Description ................................... 9
3.1 Controller in the solar circuit ...........9
3.2 Casing overview.............................11
4 Installation.................................. 12
4.1 Opening/closing the casing ...........12
4.2 Mounting.......................................13
4.3 Electrical connection.....................14
5 Display overview ........................ 18
6 Commissioning .......................... 19
7 Description of controller
functions..................................... 20
7.1 Automatic storage tank charging..20
7.2 Maximum storage tank
temperature...................................21
7.3 Maximum collector temperature...21
7.4 Tube collector function ..................21
7.5 Holiday function ............................22
7.6 Anti-freeze function.......................23
8 Operation.................................... 24
8.1 Reading temperature values..........24
8.2 Setting the controller.....................24
9 Maintenance............................... 29
9.1 Fault causes....................................29
9.2 Testing the temperature sensors....33
10 Dismantling and disposal.......... 35
11 Legal guarantee ........................ 36
12 Technical data............................. 37

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1 About this manual
1.1 Applicability
This manual describes the installation, commissioning,
operation, maintenance and dismantling of the tem-
perature differential controller for solar thermal energy
systems. When installing the remaining components,
e.g. solar collectors, pump assemblies, storage units,
pumps and switching valves, be sure to observe the
appropriate installation instructions provided by each
manufacturer.
1.2 Users
Installation, commissioning, maintenance and dis-
mantling of the controller may only be performed by
trained professional personnel. Before commissioning,
the controller must be professionally assembled and
installed by professional personnel in accordance with
the applicable regional and transregional regulations
as well as the safety instructions and general instruc-
tions within these installation and operating instruc-
tions. The professional personnel must be familiar with
these operating instructions.
The controller is maintenance-free.
Use the controller only after first thoroughly reading
and understanding this instruction manual and the
safety instructions. Adhere to all safety instructions. In
the event of any ambiguities regarding the operation

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and alteration of parameters or functions, consult pro-
fessional personnel.
1.3 Description of symbols
1.3.1 The structure of the warning notices
SIGNAL WORD
Type, source and consequences of the danger!
Measures for avoiding danger.
1.3.2 Danger levels in warning notices
Danger level Likelihoodof
occurrence Consequences resulting from non-
compliance
DANGER Imminent threat
of danger Death, serious bodily injury
WARNING Possible threat of
danger Death, serious bodily injury
CAUTION Possible threat of
danger Minor bodily injury
CAUTION Possible threat of
danger Property damage
1.3.3 Notes
NOTE
Note on easier and safer working habits.
Measures for easier and safer working habits.
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1.3.4 Other symbols and markings
Symbol Meaning
✓Precondition for action
Call to action
Result of action
• List
Emphasis on is-
sue at hand Emphasis on issue at hand
2 Safety
2.1 Proper usage
The temperature differential controller (called control-
ler in the following) may only be used for controlling
solar thermal systems within the permissible ambient
conditions (see chapter 12).
2.2 Improper usage
The controller must not be operated in the following
environments:
outdoors
in damp rooms
in rooms where highly flammable gas mixtures can
occur
in rooms in which the operation of electrical and
electronic components may cause dangers to arise
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2.3 Dangers during installation and commis-
sioning
The following dangers exist during installation / com-
missioning of the controller and during operation (in
case of installation errors):
Risk of death by electrocution
Risk of fire due to short-circuit
Damage to any of the constructional fire safety
measures present in the building due to incorrectly
installed cables
Damage to the controller and connected devices
due to improper ambient conditions, inappropriate
power supply and connecting prohibited devices or
faulty devices and incorrect assembly or installation
Therefore, all safety regulations apply when working
on the mains supply. Only electricians may perform
work that requires opening the controller (such as
electrical connection work).
When laying cables, ensure that no damage occurs
to any of the constructional fire safety measures
present in the building.
Make sure that the permissible ambient condi-
tions at the installation site are not exceeded (see
chapter 12).
Be sure to comply with the specified protection
degree.
Factory labels and markings may not be altered,
removed or rendered unreadable.
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Before connecting the device, make sure that the
power supply matches the specifications on the
type plate.
Make sure that all devices which are connected to
the controller conform to the technical data of the
controller.
Secure the device against unintentional start-up.
All work on an open controller must be performed
with the mains supply disconnected.
Protect the controller against overloading and
short-circuiting.
2.4 Detecting faults
Check the display regularly.
In case of faults, isolate the cause (see chapter 9).
As soon as it becomes evident that safe operation
is no longer possible (e.g. visible damage), remove
the device from the mains supply immediately.
Have professional personnel remedy the fault.
2.5 Exclusion of liability
The manufacturer cannot monitor the compliance
with this manual or the conditions and methods dur-
ing the installation, operation, usage and maintenance
of the controller. Improper installation of the system
may result in damage to property and, as a result, to
bodily injury.
Therefore, we assume no responsibility and liability
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for loss, damage or costs which result from or are
in any way related to incorrect installation, incorrect
execution of installation work, improper operation and
incorrect usage and maintenance.
Similarly, we assume no responsibility for patent right
or other right infringements of third parties caused by
usage of this controller.
The manufacturer reserves the right to make changes
to the product, technical data or installation and oper-
ating instructions without prior notice.

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3 Description
3.1 Controller in the solar circuit
3.1.1 The purpose of the controller
The controller controls the solar thermal system
3.1.2 The structure of the solar circuit
Temperature differential controller
Storage tank
Pump
Temperature sensor 1
(collector sensor)
Temperature sensor 2
(lower area of storage tank)
Collector
  
T1
T2



Solar circuit T3
Temperature sensor 3
(upper area of storage
tank)

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3.1.3 The function of the solar circuit
The controller constantly compares the temperatures
between the collector (T1) and the lower area of the
storage tank (T2). Once the sun heats the collector and
there is a temperature difference of 8 K between the
collector and the storage tank, the pump is switched
on.
The pump extracts the heat transfer fluid from the
lower cooler area of the storage tank and pumps it to
the collector. The heat transfer fluid in the collector is
heated by the sun and flows back to the storage tank.
The heat transfer fluid heats the domestic water via a
heat exchanger located in the storage tank.