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Siemens Building Technologies
Basic Documentation RVL471
CE1P2524E
HVAC Products
21 Function block "Derivative action time d.h.w. heating via heat exchanger"
23.10.2002
21 Function block "Derivative action time
d.h.w. heating via heat exchanger"
With plant types x–4, this function block permits entry of the D-part with d.h.w. control.
21.1 Operating line
Line
Function, parameter
Unit
Factory
setting
Range
137
Derivative action time of control (Tv)
°C
0
0...255
21.2 Description
The 3-position controller provides PID mode. The derivative action time Tv (D-part) can
be set on operating line 137.