4 setpoints and sequence, Setpoints, T[°c – Siemens RDG400 User Manual
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Siemens
RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation
CE1P3182en
Building Technologies
Functions
28 May 2009
4.4
Setpoints and sequence
In single-duct changeover applications the Comfort setpoints for heating and
cooling sequence are the same (w).
In applications with electrical heater, radiator or heating / cooling coil the Comfort
setpoint is at the heating sequence.
The start of the cooling sequence is linked to “Dead-zone” above the Comfort
setpoint. The dead zone can be set via parameter P33.
The setpoints for Energy Saving and Protection mode are below the Comfort
setpoints (heating) and above the Comfort setpoints (cooling).
They can be set via parameters P11, P12 (Energy Saving) and P65, P66
(Protection).
The control signal for air flow can be limited via parameters P63 and P64.
See section 4.8.1.
To simplify the diagram below, only minimum limitation is shown.
w
31
81D
127
T[°C]
w
HeatProt
w
CoolProt
w
HeatEco
w
CoolEco
Comfort mode
Energy Saving / Protection mode
Application
Heating mode
Cooling mode
Heating mode
Cooling mode
Single duct
Single duct
with min/max
limitation
Comfort mode
Energy Saving
Protection mode
Application
Single duct
with
electrical
heater
Single duct
with radiator
Y
T
W
YR
Y
T
W
HeatProt
W
CoolProt
YR
Y
T
W
HeatEco
W
CoolEco
YR
Y
T
W
HeatProt
W
CoolProt
YE
Y
T
W
HeatEco
W
CoolEco
YE
Y
T
W
YE
Y
T
W
CoolProt
W
CoolEco
Y
T
W
HeatProt
W
HeatEco
Y
T
W
HeatProt
W
HeatEco
Y
T
W
Y
T
W
Y
T
W
CoolProt
W
CoolEco
Y
T
W
Y
T
W