12
START-UP
The system must be filled and started up by an authorised specialist company. Technicians overseeing the procedure
must test the operation and leak-tightness of the entire system, including factory-assembled components. The operation
of the safety valve must be tested at regular intervals. It is recommended that the system be serviced annually by a spe-
cialist company.
When filling/draining the system, the ball valves on the inlets and outlets of the module should be opened slowly to avoid
pressure surges. When filling the collector circuit, use only the fill/drain fittings provided for this particular purpose.
Having completed the filling operation, close the collector return line and set the system pressure to 3 bar approx (the
level specified for expansion vessels with a pressure rating of 2.5 bar; the static height of the system must also be taken
into account).
b
Make certain that mains power is safely disconnected before opening the cover of the controller! Do not fill the
system in strong sunlight as this could trigger vapour explosions!
FILLING PROCEDURE
Filling and flushing must continue until it is certain that the system has been completely purged of air! If flow noises are
audible during operation of the collector pump, this indicates that there is residual air in the system, which must be bled
out manually by operating the relative vent valve.
b
Before commencing the fill and flush procedure, read the following directions carefully.
Storage side:
- First open the storage buffer line slowly, then the two storage return lines.
- Select manual operating mode at the controller and activate the pump (see parameter 3.2)
- Open the manual vent valves
- Allow the liquid to circulate for two minutes
- Open the diverter valve to direct flow to the storage cylinder.
- Continue recirculation until the liquid in the system is entirely free of bubbles
- Close the vent valves
- Set the controller for operation in automatic mode (see parameter 3.1).
Solar side:
- Use the filling/drain cocks to fill the system
- Select manual operating mode at the controller and activate the pump (see controller parameter 3.2)
- Open the vent valves
- Proceed with the filling operation until the liquid in the system is entirely free of bubbles
- Close the vent valves
- Set the controller for operation in automatic mode (see parameter 3.1).
USE AND FUNCTIONS OF THE CONTROLLER
DECLARATION OF CONFORMITY
Applying the CE mark to the controller, the manufacturer guarantees that the XTDC is in conformity with the following
directives:
- Low Voltage Directive 73/23/EEC, as amended by 93/68/EEC
- Electromagnetic Compatibility Directive 89/336/EEC version 92/31/EEC, version 93/68/EEC
The conformity of the product has been tested and the pertinent documentation and CE declaration of conformity are in
the possession of the manufacturer.
GENERAL INSTRUCTIONS
This technical documentation and the accompanying installation and operating instructions contain basic information
and important indications regarding safety, installation, setting, maintenance and optimum use of the controller. Accord-
ingly, the following instructions must be read and understood in their entirety by the specialist installer/technician and by
the user of the system before installing, starting up and operating the controller. All current safety standards, local power
utility directives and pertinent statutory regulations must be observed, likewise the installation and operating instructions
accompanying system components. The controller can under no circumstances serve as a substitute for any safety com-
ponent that the user is obligated to install!
Summary of Contents for SC SUN 300
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