Danfoss ECL 2000, User Manual

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Manual Override
EY.65.H4.02
36
9. MANUAL OVERRIDE
When the ECL 2000’s Manual Override function is active, you can control system
components, circulation pumps and valve motors from the ECL 2000’s front panel.
,
1. Press to select the circuit that you wish to con-
trol manually.
2. Press to activate manual control.
The LED above the button lights up and all four
LED’s indicating the controller’s operating mode are
switched off. The controller displays a picture showing
the pumps and valves of the selected circuit, as well as
status information.
!
Note:
While the Manual Override function is active, automatic control of all circuits in the
plant is disabled. Automatic control is disabled, as long as the LED above the
is
lit.
While Manual Override is active, frost-protection of the plant is disabled.
3. Press and to select the pump or valve you wish to operate (see
facing page).
The text below the selected component is highlighted to indicate the selection.
4. Press and to operate the device. These buttons work as indicated in
the table below.
Push-button Pump Motor valve
Pump is set to
ON Motor valve OPENs while button is pressed. After the but-
ton has been kept depressed for about 5 seconds, the valve
will move continuously towards the open position until the
button is pressed again
Pump is set to
OFF Motor valve CLOSEs while button is pressed. After the
button has been kept depressed for about 5 seconds, the
valve will move continuously towards the closed position
until the button is pressed again
Note:
If a motor valve is moving when
is pressed, it will continue running. You can stop
the valve by pressing or
.
It is not possible to control a timer circuit manually.