EY-RU241...246
Note:
If you press button [C] again for more than about 2 seconds, the
next digit is released for parameter adjustment (→digit flashes).
•Digit 3 flashes. You can now 'scroll' through the digits from 0 to 6
using buttons [D] and [C].
•Press button [C] for a long time in order to confirm the setting.
Digit 3 is continuously lit. This completes the setting for MFA 40,
comm. 2. Digit 2 is now flashing.
•Digit 2 is flashing. You can now 'scroll' through the digits from 0
to 5 using buttons[D] and [C].
•Press button [C] for a long time in order to confirm the setting.
Digit 2 is continuously lit. This completes the setting for MFA 41,
comm. 4. Digit 1 is now flashing.
•Digit 1 is flashing. You can now 'scroll' through the digits from 0
to 5 using buttons[D] and [C].
•Press button [C] in order to confirm the setting.
All the symbols are now shown on the display.
The room operating unit reverts to operating mode after 5
seconds. The settings are stored permanently.
Before switching over into operating mode, you can use buttons
[D] or [C] to return to parameterisation mode, or to go into the
mode where the temperature offset can be set.
Temperature offset for the temperature display
When the ecoUnit241…246 units are connected to the power
supply ('power up'), there are 60 seconds available to call up
parameterisation mode.
When button [C] is pressed for more than 5 seconds during this
period, the device changes to the parameterisation mode in order
to set the temperature offset for the display.
Use buttons [C] or [D] to set an offset for the display of up to ± 9.9
degrees Celsius or degrees Fahrenheit. To exit this mode, press
button [C] for about 2 seconds.
Note:
The temperature offset applies only to the value shown on the
display, not to the temperature value that is sent to the room
controller. The linear correction for MFA 09 must be adjusted as
appropriate so that the temperature control for the room matches
the room temperature value shown on the display.
Actual value, temperature Xi (MFA 09)
The sensor is an NTC element with a resistance of 10 kΩat 25 °C,
and must be linearised in the ecos.
EY-RU241…246 Linear correction A= 0.14 B = 1.2
Displayed room operating unit temperature: see: 'Temperature
offset for the temperature display'
Values shown on the display
On the ecoUnit241…246, if terminal 4 is connected to a 0…10 V=
signal, the display of the ecoUnit's own actual value is overwritten.
In the 0…10 V range, a value is displayed corresponding to the
setting of the function parameters (see: 'Function parameters for
ecoUnit241…246').
Setpoint adjuster dXs (MFA10)
Due to the different ecos types and their different operating
programme versions, different linear correction factors (a, b) are
required for individual setpoint correction ranges.
For ecos types ecos201, 202, 205 and 206, and subject to the
index ≤G condition, the linear correction factors shown in table A
are valid:
MFA 10 linear corrections (table A)
Range A b
± 1.0 K 0.00348 -0.55
± 1.5 K 0.005 -0.7
± 2.0 K 0.00662 -0.952
± 2.5 K 0.008333 -1.22
± 3.0 K 0.0010043 -1.487
± 3.5 K 0.011753 -1.754
± 4.0 K 0.013463 -2.001
± 4.5 K 0.015173 -2.248
± 5.0 K 0.016883 -2.495
For ecos types ecos200, 201, 202, 205, 206, 208 and 209, and
subject to the index ≥H condition, the linear correction factors
shown in table B are valid:
MFA 10 linear corrections (table B)
Range a b
± 1.0 K 0.2 -0.1
± 1.5 K 0.29 -0.16
± 2.0 K 0.38 -0.24
± 2.5 K 0.48 -0.29
± 3.0 K 0.57 -0.34
± 3.5 K 0.67 -0.4
± 4.0 K 0.775 -0.4
± 4.5 K 0.085 -0.505
± 5.0 K 0.96 -0.53
Note: It is usually necessary to enter a linear correction.
Fan speed (MFA 41)
The next table shows the commands for MFA 41 in order to control
the LCD display for the fan speeds. A CASE Engine macro is
available to control speeds A-3-2-1-0 (circulation control).
Fan speed Command at digital output
(LCD display) (MFA 41)
Auto + 0 No command present
0 Comm.1 + Comm.2 + Comm.3
1 Command 1
2 Command 2
3 Command 3
Auto + 1 Comm.1 + Comm.2
Auto + 2 Comm.2 + Comm.3
Auto + 3 Comm.1 + Comm.3
Display OFF if the function parameter is set
accordingly
Presence (occupancy) mode (MFA 40)
The next table shows the commands for MFA 40 in order to control
the LCD display for the presence (occupancy) modes.
Occupancy mode Command at digital output
(LCD display) (MFA 40)
Reduced operating mode No command 1
Normal mode Command 1
Night-time reduction Command 2
if the function parameter is set
accordingly
Display OFF if the function parameter is set
accordingly
Display of various symbols
In addition to the digital display and the 'occupancy modes' and
'fan speed' symbols, it is possible to display two additional symbols
via MFA 40 or MFA 41 respectively (see: 'Function parameters,
ecoUnit241…246').
