Daikin EWAQ016CAW, Installation And Operation Manual

Page: 31 / 40

12 Operation
Installation and operation manual
31
EWAQ016~ EWYQ016~064CAW
Packaged air-cooled water chiller
4P489435-1B – 2017.10
INFORMATION
▪ When power is restored after a power failure, the auto
restart function reapplies the remote controller settings
at the time of the power failure (if the power was
interrupted for less than 2 hours). It is therefore
recommended to leave the auto restart function
enabled.
▪ As the programmed schedule is time driven, it is
essential to set the clock and the day of the week
correctly. See
"12.3.1 About the clock" on page 28 .
▪ Schedule timer actions will only be executed when the
schedule timer is enabled ( visible on the display)!
▪ The programmed actions are not stored according to
their time of execution, but according to the time of
programming, i.e. action number 1 is the action that
was programmed first, even though it may be executed
after other programmed action numbers.
▪ If 2 or more actions are programmed for the same day
and at the same time, only the action with the lowest
action number will be executed.
Space heating
[0‑03] Status
Defines whether the ON/OFF instruction can be used in the
schedule timer for space heating.
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.