TAC 2112, Manual Functional Description
TAC AB, 1999-08-01 0-004-7459-3 (GB), 7:15(
22
)
Example
Setpoint room=21
°
C
Room temperature=18
°
C
Damped outdoor temperature=10
°
C
The above results in a deviation of (18–21)
°
C=–3
°
C. The
y-value of the curve at +10
°
C is 20 minutes, which gives a
heating time of 60 minutes (3 × 20).
The curve points are automatically adjusted after each morning
heating, provided that the parameter
Adaptive start time optimisation
(P 35) is set to “on”.
Monday effect
N.B.
The Monday effect takes place both
with
and
without
a
reference sensor.
After a night setback lasting more than 20 hours, the controller can
start the heating earlier than normal for morning heating. This takes
place by means of a percentage supplement to the heating time in the
curve for morning heating (Monday effect). This percentage
supplement can be read off and adjusted (P 40).
During the heating time, the controller controls towards the setpoint
for daytime operation and also increases the supply temperature
slightly. This increase varies depending on the damped outdoor
temperature according to the curve on the previous page.
Parameters
P No. Parameter Min. Max. Step Default Comments
P 33 Outdoor temp., 0 °C morning
boost
–30 °C P 34 1 °C –10 °C Affects variable night setback
P 34 Outdoor temp., full morning
boost
P 33 20 °C 1 °C 10 °C Affects variable night setback
P 35 Adaptive start time
optimisation
0 (off) 1 (on) 1 1 (on) With reference sensor only
P 36 Max morning boost 0 °C 100 °C 1 °C 10 °C
P 37 Max heating time 0 h 24 h 1 h 6 h h=hours
P 38 Heating time, –10°C (y0) 0 min. 1440 m. 1 min. 120 min. Changed by ctrller if P 35=1
P 39 Heating time, +10°C (y1) 0 min. 1440 m. 1 min. 20 min. Changed by ctrller if P 35=1
P 40 % Monday effect 0% 50% 1% 10% Changed by ctrller if P 35=1
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