User Instructions for GECO GH21RA controller
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Page 4 Edition I
19.06.2013
*When a contactor or relay proxy is connected, use a dedicated blowout
system (eg varistor).
Omission of this security measure may result in
malfunction or damage to the controller output.
3.
Requirements for electrical installation
WARNING!
Only a person with a valid licence to carry out electrical installation work can install the controller
wiring and connection technologies. It is recommended that the work is carried out by a qualified
installation engineer. The following are the basic requirements for the electrical power supply for
this particular controller:
1.
Repairs, maintenance and other work on the system can be carried out only after
disconnecting the main power supply.
2.
The room in which the controller is to be installed should be equipped with 230V/50Hz
electrical system in accordance with the applicable regulations.
3.
The controller should be supplied from a dedicated circuit 230VAC/50Hz grid, protected by
a circuit breaker.
4.
The controller power cable should have a cross section minimum mechanical strength of 2.5
[mm2]
5.
The cable must be protected from mechanical damage, by keeping it in a duct or housing
4.
Graphic and text descriptions of driver connections
When the cable has been prepared, you will be ready to connect the power to the controller and
temperature sensors, thermostats and other devices:
•
The 230 V power supply should be connected to the controller using the terminals marked “L”
and “N” – in inputs 01-02.
•
The NTC temperature sensor must be connected to the inputs in accordance with the
instructions set out in the tables in section 8, System Installation. Please note that the number of
sensors supported depends on the type of installation, and unused sensors do not have to be
connected to inputs.
•
The room panel GA03HA must be connected to a separate input, as described.
•
Technological equipment (pumps / fans / feeder) should be connected to the outputs, as
described in the tables in section 8, System Installation and according to the selected installation