Siemens Synco 700 Basic Documentation page 128

Rule of thumb
Impact of solar radiation
Settings
Influence of wind speed
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Building Technologies
HVAC Products
Due to the room temperature deviation
corresponds roughly to the value of:
Δ Δ
TFl= TR × V × (sHc + 1)
Δ
TFl Change of flow temperature setpoint
Δ
TR Change of room temperature setpoint
V
Room temperature influence
During boost heating, the room temperature setpoint increase also produces an in-
crease of the flow temperature setpoint. In that case, the greatest of the 2 values is
used for generating the setpoint.
TRBoost
SpTR
+
TR TR × V
-
The resulting room temperature setpoint has a minimum limitation of 5 °C and a maxi-
mum limitation of 35 °C.
Only one solar intensity sensor can be connected to a controller. For configuration and
parameterization, refer to chapter 12 "Function block miscellaneous".
The impact of solar radiation is to be set individually for each heating circuit. It can be
deactivated (setting "---").
Main menu > Commissioning > Settings > ... or
Main menu > Commissioning > Heating circuit 1 (or 2 or 3 ) > Optimizations/influences
Operating line
Impact of solar radiation
TFl
SpTFlDe
TOeff
SpTFlHi
SpTRN
TODe
Isun ×
TFl =
1000 W/m
Isun
Δ
TRsnNom
Room temperature increase with 1000 W/m
Isun Filtered solar radiation
sHc Heating curve slope
The solar intensity sensor is to be configured via "Extra configuration". If required, the
controller's DC 0...10 V input is to be matched to the sensor output.
DC 0...10 V ≅ 0...1,000 W/m
Setting of the solar radiation impact must always be matched to the type of building.
The setting to be made is the room temperature increase
solar radiation of 1,000 W/m
Based on this parameter and the current (slightly) attenuated solar radiation, the con-
troller calculates the flow temperature readjustment
follows:
Δ
Isun × TRsnNorm
Δ
TFl =
1000
Only one wind speed sensor can be connected to a controller. For configuration and
parameterization, refer to chapter 12 "Function block miscellaneous".
Modular Heating Controller RMH760B
9 Heating circuit control
Δ TV, the change of flow temperature setpoint
sHc Heating curve slope
Sp Setpoint
TRx Room temperature
MAX
TR
-
Range
---- / 0.0...15.0 K
sHc
+
-
sHc
TOHi
TOeff
TRsnNom
× (sHc + 1)
2
2
2
is the factory setting.
2
.
× (sHc + 1)
TReff
Factory setting
----
TFl
Δ
TRsnNorm resulting from a
Δ
TFl due to solar radiation (Isun) as
CE1P3133en
05.02.2007