Mitsubishi Electric EHST20-Serie Installationshandbuch Seite 32

5
System Set Up
<Compensation curve setting>
. From the heating menu select edit using the F3 function button.
2. The compensation curve setting screen will be displayed.
3. Press F2 to alter the Hi parameter (when flow temp is maximum and out-
door temp is minimum).
4. Press F3 to alter the Lo parameter (when flow temp is minimum and out-
door temp is maximum).
5. Press F4 to add an extra point (adjust).
Pressing F2-4 will cause the relevant edit screen to be displayed. Editing Lo and
Hi parameters is done in the same way; please see the following for more de-
tailed explanation of parameter editing.
In the parameter (Lo/Hi) edit screen the flow temperature and outdoor tempera-
ture for the compensation curve graph can be set and altered for the 2 extremes
of Hi and Lo.
1. Press F1 and F2 to change the flow temperature (y-axis of compensation
curve).
2. Pressing F1 will raise the flow temperature for the set outdoor temperature.
3. Pressing F2 will lower the flow temperature for the set outdoor temperature.
4. Press F3 and F4 to change the outdoor temperature (x-axis of compensa-
tion curve).
5. Pressing F3 will lower the outdoor temperature for the set flow temperature.
6. Pressing F4 will raise the outdoor temperature for the set flow temperature.
< explanation of compensation curve >
During late spring and summer usually the demand for space heating is reduced.
To prevent the heat pump from producing excessive flow temperatures for the
primary circuit the compensation curve mode can be used to maximise efficiency
and reduce running costs.
The compensation curve is used to restrict the flow temperature of the primary
space heating circuit dependent on the outdoor temperature. The FTC3 uses
information from both an outdoor temperature sensor and a temperature sensor
on the primary circuit supply to ensure the heat pump is not producing excessive
flow temperatures if the weather conditions do not require it.
<Holiday mode>
Holiday mode can be activated in 2 ways. Both methods will result in the holiday
mode activation screen being shown.
Option 1.
From the main menu screen button E should be pressed. Be careful not to hold
down button E for too long as this will turn off the controller and system.
Option 2.
From the main menu screen press button F4. The current settings screen will be
displayed. Press button F4 again to access the holiday mode activation screen.
Once the holiday mode activation screen is displayed you can activate/deactivate
and select the duration that you would like holiday mode to run for.
• Press button F to activate or deactivate holiday mode.
• Use buttons F2, F3 and F4 to input the date which you would like holiday
mode to activate or deactivate for space heating.
<editing holiday mode>
To change the holiday mode settings e.g. the flow temp, you must access the
holiday mode menu from the main settings menu.
. From main menu screen press button B.
2. Use buttons F2 and F3 to scroll through menu until Holiday Mode is highlight-
ed.
3. Press CONFIRM button.
4. The holiday mode status screen is displayed.
To change the flow temperature or room temperatures on heating mode press
5.
button F3.
6. A list of variables will be displayed. Choose the one you wish to modify using
buttons F/F2 then press CONFIRM.
7. Adjust the temperature using buttons F3 and F2 and press CONFIRM button
to save changes.
3
Holiday Mode activation screen
Holiday Mode status screen