Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.4 Heat recovery equipment (basic types A, P)
This function controls the heat recovery equipment.
12 1 2
Y
y1 y2 a

xa a
Q
HR
MECH
CC....................
10.4.1 Activate block
To activate the "Heat recovery equipment" function, an output must first be
assigned. If a switching output is required, the "Output relay" can be configured on
a free relay output.
Main menu > Commissioning > Extra configuration > Aggregates >
Heat recovery equipment >
Operating line Adjustable values / remarks
Output modulating ---, N.Y1, N.Y2, ... / activate heat recovery
Output relay ---, N.Q1, N.Q2, …
10.4.2 Limitations
The modulating output (Y) can be limited at the top and at the bottom. 0...100%
output then corresponds to "Positioning signal minimum" (Ymin) ... "Positioning
signal maximum" (Ymax).
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Heat recovery equipment >
Operating line Range Factory setting
Positioning signal min 0...100% 0%
Positioning signal max 0...100% 100%
0...100% output corresponds to
"Positioning signal minimum" (Ymin) ... "Positioning signal maximum" (Ymax).
0 %
100 %
0 %
0 V
100 %
10 V
Y
Y
max
min
Y
Qs
3140D01
Qs = Load demand from the sequence controller
Configuration
Setting values
Function diagram