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INFORMATION
By default space heating based on temperature set point
(method 1) is enabled, so only temperature shifts are
possible (no ON/OFF instruction).
Advantage of this method is that you can simply switch off
the space heating operation by pushing the y button
without disabling the automatic domestic hot water storage
operation (e.g. during summertime when no space heating
is required).
In the following tables both methods on how to interpret the schedule
timer are shown.
Method 1
Space heating based on temperature set point
During operation
During schedule timer operation the operation LED is lit
continuously.
When pushing
The schedule timer for space heating will stop and will
the y button
not start again.
The controller will be switched off (operation LED will
stop working).
However, the schedule timer icon will stay displayed
which means that the domestic water heating stays
enabled.
When pushing
The schedule timer for space heating and domestic
the r/p button
water heating along with the quiet mode will be stopped
and will not start again.
The schedule timer icon will not be displayed anymore.
(a) For leaving water temperature and/or room temperature
Operation example: Schedule timer based on temperature set
points.
When setback function is enabled, the setback operation will have
priority over the scheduled action in the schedule timer.
T
22 22°C
22°C
65 65°C
65°C
1
19°C
19 19°C
62°C
62 62°C
0:30
16:00
T
2
60°C
60 60°C
23:00
23:00
23:00
T
22 22°C
22°C
65°C
65 65°C
3
19 19°C
19°C
62 62°C
62°C
60°C
60 60°C
23:00
0:30
16:00
1
Schedule timer
2
Setback function
3
When both setback function and schedule timer are enabled
A
Setback function
t
Time
T
Temperature set point
Room temperature
Leaving water temperature
Installation manual
26
21°C
21 21°C
64 64°C
64°C
19°C
19 19°C
19 19°C
19°C
62°C
62 62°C
62 62°C
62°C
t
6:30
9:00
18 18°C
18°C
t
57°C
57 57°C
5:00
5:00
5:00
A
21°C
21 21°C
64 64°C
64°C
19 19°C
19 19°C
19°C
19°C
19 19°C
19°C
19°C
19 19°C
18 18°C
18°C
62 62°C
62°C
62°C
62 62°C
62 62°C
62°C
62°C
62 62°C
t
57 57°C
57°C
5:00
6:30
9:00
Method 2
During operation
When pushing
the y button
(a)
When pushing
the r/p button
Operation example: Schedule timer based on ON/OFF instruction.
When setback function 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.
ON
B
1
19 19°C
19°C
62 62°C
62°C
16:00
2
ON
B
19°C
19 19°C
62 62°C
62°C
3
16:00
1
Schedule timer
2
Setback function
3
When both setback function and schedule timer are enabled
A
Setback function
B
ON/OFF instruction
t
Time
T
Temperature set point
Room temperature
Leaving water temperature
■
[0-04] Setting not available
Space heating based on ON/OFF instruction
When the schedule timer switches space heating OFF,
the controller will be switched off (operation LED will stop
working). Note that this has no influence on the domestic
water heating.
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, one should consult
the last programmed command. It is clear that the "last"
programmed command may date from the day before.
Refer to the operation manual.
The controller will be switched off (operation LED will
stop working).
However the schedule timer icon will stay displayed
which means that the domestic heating stays enabled.
The schedule timer for space heating and domestic
water heating along with the quiet mode will be stopped
and will not start again.
The schedule timer icon will not be displayed anymore.
OFF
ON
22 22°C
22°C
21 21°C
21°C
65°C
65 65°C
64 64°C
64°C
0:30
6:30
18 18°C
18°C
60°C
60 60°C
23:00
23:00
23:00
5:00
5:00
5:00
A
OFF
ON
22 22°C
22°C
21°C
21 21°C
65 65°C
65°C
64°C
64 64°C
18 18°C
18°C
60 60°C
60°C
23:00
6:30
19°C
19 19°C
62°C
62 62°C
t
9:00
t
19°C
19 19°C
62°C
62 62°C
t
9:00
HXHD125A7V1B
VRVIII system indoor unit
4PW62584-1A – 11.2010
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