TAC 2112 - Damped Outdoor Temperature

TAC 2112, Manual Functional Description
TAC AB, 1999-08-01 0-004-7459-3 (GB), 7:5(
22
)
7.3.2 Damped outdoor temperature
The object of controlling the supply temperature is to maintain the
correct room temperature irrespective of the outdoor temperature. The
heat storage capacity of the building shell means that a change in the
outdoor temperature affects the room temperature only after a certain
time. Control takes place according to a
damped outdoor temperature
in order to utilise effectively the heat storage in the building shell.
The controller calculates the value of the damped outdoor temperature
every 10 minutes.
0
2
4
6
8
10
12
14
16
Temperature
°C
A
ctua
l
temperature
Damped
temperature
00:00 12:00 00:00 12:00 00:00
Damping level= 6 hours
outdoor
outdoor
Damped outdoor temperature
This function minimises the utilisation of energy by preventing
unnecessary heat demands during the usually cool evening hours
before a night setback.
The damping level is adjustable so that the controller is able to suit all
types of building.
Parameters
P No. Parameter Min. Max. Step Default Comments
P 01 Outdoor temperature –30 °C 40 °C 0,3 °C - Step=0,1 at 2–40 °C
P 02 Damped outdoor temperature –30 °C 40 °C 0,1 °C -
P 79 Damping level, outdoor temp. 0 h 20 h 1 h 4 h 0=no damping. h=hours