Siemens RDG100T - 4.7.11 1-Stage Heating or Cooling with Reversing Valve

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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation CE1P3181en
Building Technologies Functions 14 Dec 2011
4.7.11 1-stage heating or cooling with reversing valve
On this application, the thermostat controls a compressor in heating or cooling
mode with changeover (automatic or manual). Cooling only is factory-set (P01=1).
 Set basic application "4-pipe" (see section 4.7.6)
 Connect compressor and reversing valve as follows:
C1
RV
ON
OFF
12 3
This application is available with RDG110 only.
The diagrams below show the control sequences for 2-position control.
Heating mode with manual selection
(P01 = 2)
Cooling mode with manual selection
(P01 = 2)
½ SDH
1
0
½ SDH
w
Y
3181D115
T[°C]
C1 (H)
0
w
Y
12
T[°C]
RV
1
Y
½ SDC
1
0
½ SDC
w
T[°C]
C1 (C)
3181D116
Y12
1
0
w
T[°C]
RV
Heating and cooling mode (P01=04)
T[°C] Room temperature
w Room temperature setpoint
Y11 Control command “Compressor” (H)
Y21 Control command “Compressor” (C)
Y12 Control command “Reversing valve”
(heating = ON )
SDH Switching differential “Heating” (P30)
SDC Switching differential “Cooling” (P31)
Y
½ SDC
1
0
½ SDC
w
T[°C]
C1 (C)
½ SDH
½ SDH
C1 (H)
½
x
dz
½
x
dz
Y12
1
0
w
T[°C]
RV
3181D118
X
dz
Dead zone (P33)
Hardware
ON/OFF control