Ouellet ETO2 - Manual (Page 2)

© 2013 OJ Electronics A/S 3
ETO2 is an electronic controller for fully automatic, economical
ice and snow melting on outdoor surfaces and in gutters.
Ice forms due to a combination of low temperature and
moisture. ETO2 detects both temperature and moisture, and the
ice and snow melting system will usually only be activated if ice
or snow is present. ETO2 is suitable for controlling both electric
heating cables and hydronic heating pipes.
Product programme
ETO2-4550
Thermostat.
ETOG-55 Ground sensor for detecting temperature
and moisture.
ETOG-56/ETOK-1 Embedded ground sensor for detecting
temperature and moisture.
ETOR-55 Gutter sensor for detecting moisture.
ETF-744/99 Outdoor sensor for detecting temperature.
ETF-522 Water pipe sensor for detecting
temperature.
warnInG! – read this manual!
Carefully read this instruction manual in its entirety,
paying close attention to all the warnings listed below. Make
sure that you fully understand the use, displays and limitations
of the controller because any confusion resulting from
neglecting to follow this instruction manual, or from improper
use of the device it concerns, may cause an installer to commit
errors which could lead to ice and snow conditions capable of
causing serious injury or death.
warnInG! – note that snow, ice and icicles may be
present even though you follow the instructions
contained in this manual.
You are strongly advised to monitor any unexpected build-up of
snow, ice or icicles. As an additional safety measure, you should
always perform a manual inspection of public areas in order to
ensure safe access to the controlled areas.
warnInG! – Important safety instructions.
Disconnect the power supply before carrying out
any installation or maintenance work on this control unit and
associated components. This control unit and associated
components should only be installed by a competent person
(i.e. a qualified electrician). Electrical installation must be in
accordance with appropriate statutory regulations.
NOTE! – The output relays are potential free. The
installer must connect a power source, e.g. from an
electrical panel.
CE MarkInG fOr Eu
OJ Electronics A/S hereby declares that the product is
manufactured in accordance with Council Directive 2004/108/
EC on electromagnetic compatibility (and subsequent
amendments) and Council Directive 2006/95/EEC on electrical
equipment designed for use within certain voltage limits.
applied standards
ETO2-4550-EU28: CE marking LVD/EMC: EN60730-2-9
ETO2-4550-US28: CAN/CSA E 60730-2-9:01.
ETO2-4550-RU28: CE marking LVD/EMC: EN60730-2-9
The product may only be used if the complete installation
complies with current directives.
The product carries a manufacturer’s warranty if installed in
accordance with these instructions and current regulations.
If the product has been damaged in any way, e.g. during
transport, it must be inspected and checked by authorised
personnel before being connected to the power supply.
TEChnICal daTa
Thermostat ETO2-4550:
Designed for indoor mounting only!
Supply voltage ............................115/240 V AC ±10%, 50-60 Hz
Supply voltage for ETOG/ETOR heating (SMPS) ..28 V DC, 8 VA
3 output relays (potential-free contact, NO) ...................3 X 16 A
Alarm relay (potential-free contact, NO) ........................ max. 5 A
Control signal to actuator (mixing valve) .....................0-10 V DC
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