Siemens RVA53.280, Основная документация

Страница: 169 / 184

169/184
Siemens Building Technologies Basic Dokumentation RVA63.280, RVA53.280 CE1P2374E
Landis & Staefa Division 19.04.2001
4.6 Composite outside temperature
Compensating variable for flow temperature control.
The composite outside temperature is a mixture of the actual outside temperature and
the attenuated outside temperature as calculated by the controller.
The mixture of actual and attenuated outside temperature is dependent on the type of
building construction (setting 113) and is generated as follows:
Selected type of construction composite outside temperature
Heavy (setting 113 = 0) Tagem = ½ TAakt + ½ TAged
Heavy (setting 113 = 1) Tagem = ¾ TAakt + ¼ TAged
The composite outside temperature as a compensating variable acts on flow
temperature control, that is thus matched to the prevailing weather conditions.
It also acts on the 24-hour heating limit to shut down the heating.
13
14
15
16
17
23
71
D12
18:00 06:00 06:00 18:00 18:00
t
TA
TAakt
TAged
°C
TAgem1
TAgem0
TAakt Actual outside temperature
TAged Attenuated outside temperature
TAgem1 Composite outside temperature for light building structures
TAgem0 Composite outside temperature for heavy building structures
Benefit
Description
Process
Effect
Example