© 2014 OJ Electronics A/S
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Type ETO2
In hydronic mode, the supply sensor maintains the required supply water temperature while the system
is active. When heat is demanded, both the circulation and main pumps are activated and the valve is
opened 20% for 1 minute to let the system stabilise.
When there is no need for ice or snow melting, the system activates the circulation pump for 1 minute
every 15 minutes to check whether the return water temperature has dropped below the required “idle
temp.” If this is the case, the system fully activates to increase the return water temperature to the
required level.
sTarTuP
sElECT sCalE:
CElsIus
fahrEnhEIT
When ETO2 is switched on for the first time, Celsius or Fahrenheit must be
selected. Turn the encoder button until the required temperature scale is
highlighted. Then accept the selection by pressing the encoder button.
sEnsOr 1:
ETOG
ETOr
SENSOR 1 is shown on the display, allowing the type of sensor connected for
input 1 to be selected:
ETOG : Ground sensor
ETOR : Gutter outdoor sensor
Then accept the selection by pressing the encoder button.
sEnsOr 2:
Off
ETOG
ETOr
SENSOR 2 is then shown on the display, allowing the type of sensor connected
for input 2 to be selected. If no sensor is connected to input 2, OFF must be
selected.
OuTdOOr sEnsOr:
Off
ETf
Select ETF if an ETF outdoor sensor is connected to terminals 31-32.
If no ETF sensor is connected, select OFF. Then accept the selection by
pressing the encoder button.
aPPlICaTIOn:
ElECTrIC 1-zOnE
ElECTrIC 2-zOnE
ElECTrIC 2-sTaGE
hydrOnIC
Select the application type by turning the encoder button and pressing OK.
ELECTRIC 1-ZONE : 1-zone electric heating control. Note: also used for simple
hydronic. Fig. 12
ELECTRIC 2-ZONE : 2-zone electrical heating control. Note: also used for simple
hydronic. Fig. 12.
ELECTRIC 2-STAGE : Advanced 2-stage electric heating control (Y/Δ) of 1 zone.
Fig. 10
HYDRONIC : 1-zone hydronic heating control with supply water control. Fig. 11
Select the appropriate option and press OK. The system is now set up, and will begin operating fully
automatically in accordance with the pre-configured standard program, see FACTORY SETTINGS.
Alternative settings can also be made, see SETTINGS.
English / User Manual
