Viessmann VITOCROSSAL 300 CU3A 35 Operating Instructions Manual page 27

Vitocrossal 300 CU3A 26 to 199 Operating
Time Program
Further information can be found in "Terminology" page 42.
Setting the time program for DHW heating
Factory setting: One time phase from 00:00 to 24:00 h
for every day of the week.
Extended menu:
1.
2. "DHW"
3. "DHW time program"
4. Set the required time phases.
Procedure for setting a time program, refer to page 18.
Note: Between the time phases, DHW is not heated;
only frost protection for the DHW tank is active.
When setting time programs, please bear in mind
that your heating system requires some time to
heat the DHW tank to the required temperature.
DHW heating outside of the time program
Note: The operating program "Heating and DHW" or
"Only DHW" must be set for at least one system
heating circuit.
Extended menu
1.
2. "Heating"
3. "Party mode"
4. Disable "Party mode" again with "OFF" to prevent
unintentional central heating with standard room
temperature.
Setting the time program for the DHW recirculation pump
The time program for the DHW recirculation pump is
preset to Automatic mode at the factory. In other words,
the DHW recirculation pump operates in parallel to the
DHW heating time program.
H If you don't want the automatic mode, you can select
up to 4 individual time phases per day for the DHW
recirculation pump, which can be the same for every
day of the week or different. Set the start and end
points for each time phase.
H In the "Information" menu, you can scan the current
time program (see chapter "Scanning information",
"DHW" group).
Note: Activating the DHW recirculation pump is only
advisable for those times when DHW is actually
drawn.
Extended menu:
1.
2. "DHW"
3. "DHW circ time prog"
4. Set the required time phases.
Procedure for setting a time program, refer to page 18.
Note: Between time phases the DHW recirculation pump
remains off.
DHW Heating
27