Note:
If additional external modules HKM2 are used,
only 1 outdoor temperature sensor is required.
In order to ensure that all heating circuits use the
same outdoor temperature, adjust to sensor 13.
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The timer determines whether day correction or night
correction (set back) is used for changing the set flow tem-
perature. 21 different time frames (3 for each day) can be
set for night correction of the heating circuit.
If one of the time frames is set to ‘active’, night correction
will be active.
If none of them is active, the set flow temperature will be
adapted with day correction. The timers are factory set such
that every day from 10:00 pm to 5:00 am (the following day)
night set back is active.
The
mode
determines the operation mode of the timer:
Night/ day
time frame for night correction
off / day
time frame for heating circuit off
without:
timer deactivated
Timer:
Arrangement/Heat. circuit/hc/timer/Mode
selection: “Night / Day”, “Off / Day”, “Without”
factory setting: “Night / Day”
Arrangement/Heat. circuit/hc/timer/t1(...21)-on
adjustment range: 00: 00 ... 00:00
factory setting: 22:00 (t1...t7-on)
Arrangement/Heat. circuit/hc/timer/t1(...21)-off
adjustment range: 00: 00 ... 00:00
factory setting: 05:00 (t1 ... t7-off)
Example:
The night correction runs from Monday to
Tuesday from 10:00 p.m. to 6:00 a.m. and Tuesday from 03:00
p.m. to 06:00 p.m., when t1-on is set to mon 10:00 p.m., t1-
off to tue, 6:00 a.m. and t2-on to tue,03:00 p.m. and t2-off
to tue, 06:00 p.m.
Adjustment channel for allocating the flow temperature
sensor.
The default is sensor 6 – this can be reallocated if needed.
A sensor which is already in use can be allocated without
influencing its original function in the system.
Flow sensor:
Arrangement/Heat. circuit/hc/Expert/Sen.flow
adjustment range: 1 ... 10
factory setting: 6
Adjustment channel for allocating the outdoor temperature
sensor.
The default is sensor 7 – this can be reallocated if needed.
A sensor which is already in use can be allocated without
influencing its original function in the system.
Outdoor temperature sensor:
Arrangement/Heat. circuit/hc/Expert/Sen. out-
door
adjustment range: 1 ... 10
factory setting: sensor 7
The set flow temperature is compared with the tempera-
ture at one or two tank (buffer) reference sensors (diffe-
rential control). If this temperature differential is too small
(
D
THon), backup heating will be activated. It will be switched
off if the differential (
D
THoff) between tank and set flow
temperature is large enough.
Backup heating
Arrangement/Heat. circuit/hc/Expert/aft.-heat
selection: “None”, “Therm.”, “Tank”
factory setting: “None”
Î
Select the backup heating type via the parameter “Aft.-
Heat.” (“None”, “Therm.”, or “Tank”).
If “None” is selected, no backup heating will be carried out.
If “Therm.” is selected, the set flow temperature is compared
with a tank reference sensor.
If “Tank” is selected, the comparison is made with 2 refe-
rence sensors. The switching conditions to both reference
sensors have to be fulfilled.
Arrangement/Heat. circuit/hc/Expert/
D
T
ah on
adjustment range: -30.0 ... +89.0 °Ra
factory setting: 8.0 °Ra
Arrangement/Heat. circuit/hc/Expert/
D
T
ah off
adjustment range: -29.0 ... +90.0 °Ra
factory setting: 25.0 °Ra
