7 Configuration
Installer and user reference guide
36
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1B – 2018.04
After entering the field setting, the selected permission level must be
enabled by simultaneously pressing
and
, immediately
followed by simultaneously pressing
and
. Keep all 4 buttons
pressed for at least 5 seconds. Note that no indication on the user
interface is given. After the procedure the blocked buttons will not be
available anymore.
Deactivating the selected permission level is done in the same way.
[0‑01] Room temperature compensation value
If necessary, it is possible to adjust some thermistor value of the unit
by a correction value. This can be used as countermeasure for
thermistor tolerances or capacity shortage.
The compensated temperature (= measured temperature plus
compensation value) is then used to control the system and will be
displayed in the temperature read-out mode. See also field
setting [9] in this chapter for compensation values for leaving water
temperature.
[0-02]
This setting is not applicable.
[0‑03] Status
Defines whether the ON/OFF instruction can be used in the
schedule timer for space heating.
[0‑03]
Description
0
Space heating schedule timer based on ON/
OFF instruction.
1 (default)
Space heating schedule timer based on
temperature setpoint.
Space heating based on ON/OFF instruction
During operation
When the schedule timer switches space
heating OFF, the controller will be switched off
(operation LED will stop working).
Press
The schedule timer for space heating will stop
(when active at that moment) and will start
again at the next scheduled ON function.
The "last" programmed command overrules the
"preceding" programmed command and will
remain active until the "next" programmed
command occurs.
Example: imagine the actual time is 17:30 and
actions are programmed at 13:00, 16:00 and
19:00. The "last" programmed command
(16:00) overruled the "previous" programmed
command (13:00) and will remain active until
the "next" programmed command (19:00)
occurs.
So in order to know the actual setting, you
should consult the last programmed command
(this may date from the day before).
The controller is switched off (operation LED
off), but the schedule timer icon remains on.
Press
The schedule timer for space heating and the
quiet mode stops and will not start again.
The schedule timer icon is not displayed any
more.
▪ Operation example: Schedule timer based on ON/OFF instruction.
When the setback function (see field setting [2]) is enabled, the
setback operation will have priority over the scheduled action in
the schedule timer if ON instruction is active. If OFF instruction is
active this will have priority over the setback function. At any time
the OFF instruction will have the highest priority.
t
18°C
40°C
40°C
18°C
A
5:00
23:00
5:00
23:00
2
B
t
9:00
16:00
19°C
19°C
22°C
21°C
42°C
42°C
45°C
44°C
19°C
19°C
22°C
21°C
42°C
42°C
45°C
44°C
1
OFF
ON
ON
6:30
0:30
B
t
6:30
9:00
16:00
23:00
19°C
19°C
22°C
21°C
42°C
42°C
45°C
44°C
19°C
19°C
22°C
21°C
42°C
42°C
45°C
44°C
3
OFF
ON
ON
18°C
40°C
40°C
18°C
1
Schedule timer
2
Setback function
3
Both setback function and schedule timer are enabled
A
Setback function
B
ON/OFF instruction
t
Time
T
Temperature setpoint
Room temperature
Leaving water temperature
Space heating based on temperature setpoint
(a)
During operation
During schedule timer operation the operation
LED is lit continuously.
Press
The schedule timer for space heating stops
and will not start again.
The controller is switched off (operation LED
off).
Press
The schedule timer for space heating and the
quiet mode stops and will not start again.
The schedule timer icon is not displayed any
more.
(a)
For leaving water temperature and/or room temperature
▪ Operation example: Schedule timer based on temperature
setpoint
When the setback function (see field setting [2]) is enabled, the
setback operation will have priority over the scheduled action in the
schedule timer.
