13
Basic menu: Control modes
Automatic
Forced control, nominal temp.
Forced control, temp. drop
Forced control, bigger temp. drop
Manual electrical
Stand-by
The selected control mode always appears in the controller’s basic display.
Changing the control mode: Turn the control knob to move to control mode in the basic display.
The selected control mode appears in the display. Press OK to open a new window. Turn the
control knob and press OK to select the desired control mode. Press ESC to exit.
Control mode
Explanation
EH-800 controls the supply water temperature automatically according to
the need for heating and possible time programs and home-away cont-
rol commands. Automatic control is the recommended control mode.
Continuous nominal temperature.
Continuous temperature drop
Continuous big temperature drop
The valve remains in that position until manual control has been turned off. The measured
H1 valve position appears in the controller’s display. If cascade control is in use, the control-
ler can move the H1 valve into the desired position using the actuator connected to EH-800.
The controller can also move the cascade control valve into the desired position. If casca-
de control is in use and you switch the controller to manual via a mobile phone, the % that you
give represents the combined positions of the valves.
Examples: 100% = both valves complete-
ly open. 50% = the valve connected to EH-800 is closed and the cascade control valve is complete-
ly open. 30% = the valve connected to EH-800 is closed and the cascade control valve is 60% open.
The controller lets the supply water temperature drop freely to the freezing limit.
Manual mechanical
Unplug the controller from the power source. The EH-800 cont-
roller also has a mechanical hand-operated lever. Press the cont-
rol knob (1) and turn the lever (2) simultaneously.
The position of the hand-operated lever indicates the position
of the valve.
None of the time programs are in
effect with forced drive.
Send a message:
H1 Control modes
. The controller sends a return message in which a * ap-
pears in front of the control mode in use. If you want to change the control mode,
move
the *
in front of the desired control mode and send the message back to the controller. The controller
will then send a return message showing that it has switched to the desired control mode.
Key words:
H1 Control modes
H2 Control modes
Basic menu -> H1 (H2) Control modes
2.
1.
Radiator heating > Basic menu
Supply water info >
Room temperatur info >
Settings >
Control mode
>
Valve flushing and valve calibration run is once a week
(see p. 37).
Radiator heating ... Control modes
Control mode Manual, el. >
Cascade control valve control 20% >
H1 Valve control: 15% >
H1 valve position 15 %
