Constant For Quick Setback (Kon) - Siemens RVA47.320 User Manual

Benefit
Description
Important
Setting
Effect
Quick setback without
room temperature
sensor
Example
Note
116/166
Siemens Building Technologies
HVAC Products
5.7

Constant for quick setback (KON)

•
Making use of the building's thermal storage capacity.
Quick setback is dependent on whether or not a room temperature sensor is used. A
differentiation is made between quick setback with and without room temperature
sensor.
This setting is active only if no room sensor is used.
1. Press the line selection buttons to select line 31OEM.
2. Press the + / – buttons to set the constant.
Setting range
0...20
The duration of quick setback will be changed.
Entry:
Increase: Setback time will become longer
For well insulated buildings that cool down slowly
Decrease: Setback time will become shorter
For poorly insulated buildings that cool down rather quickly
Quick setback is started as soon as a change to a lower room temperature setpoint
takes place (e.g. switching times in automatic mode).
During quick setback, the heating circuit pump will be deactivated and no heat demand
signal delivered.
Exception Due to frost protection for the plant, the heating circuit pump can be
activated however in spite of quick setback.
The quick setback time is generated based on setting 31
temperature in the room temperature setpoint step. It is limited to a maximum of 15
hours.
The example applies to a setpoint step change of 4 °C (e.g. TRw from 20 to 16 °C):
TAgem
0
- 20 0
- 10 0
0 0
+10 0
If a room sensor is connected, the quick setback time will not be generated from this
setting. For details, refer to section "Quick setback with room temperature sensor"
(Chapter 6, "Functions with no settings").
Basic Documentation RVA47.320
Description of the OEM settings
Unit
-
Setting 31
4 8
0 0
0.5 1
3 6
5 11
Values in hours
Factory setting
2
, the composite outside
OEM
OEM
12 15
0 0
1.5 2
9 11
15 (16.5) 15 (21)
20
0
2.5
15
15 (27)
CE1P2379E
15.07.2002