TAC 2413 - Night Heating

TAC AB, 1998-10-23 0-004-7614-0 (GB), 7:7 (24)
TAC 2413 Handbook Functional description
The winter compensation starts when the outdoor temperature is be-
low “Start winter compensation”. The maximum compensation is
achieved when the outdoor temperature is less than or equal to “Stop
winter compensation”.
P No. Parameter Min. Max. Factory set. Change Comment
P 01 Supply air temperature Measured value
P 02 Supply air temperature SP Calculated value
P 03 Room temperature Measured value
P 04 Room/exhaust air temp. SP Calculated value
P 49 Start winter compensation –20 °C 20 °C 10 °C
P 50 Max. winter compensation –20 °C 20 °C 0 °C
P 51 Stop winter compensation –30 °C 20 °C –20 °C
P 52 Start summer compensation 0 °C 50 °C 25 °C
P 53 Max. summer compensation –20 °C 20 °C 0 °C
P 54 Stop summer compensation 5 °C 50 °C 40 °C
7.3.4 Night heating
Night heating is activated automatically if a room sensor is instal-
led. This applies even if supply air control has been chosen.
During two speed operation, the fans run at full speed.
During the night, the AHU is controlled by the adjustable “Night
heating setpoint”. The AHU is normally off, but it is restarted if
the room temperature is below the setpoint, see the figure below.
When the temperature has reached 1 °C above the night heating set-
point, the AHU stops. There is a choice of running only TF during
night heating.
1 °C
room temperature
AHU
off
on
night heat. SP
time
time