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Settings
Rule of thumb
Comfort heating limit
Building Technologies
HVAC Products
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Heating circuit > Optimizations/influences
Operating line
Room influence
TOeff
SpTR
+
TR
-
Due to the room temperature deviation
corresponds roughly to the value of:
∆
∆
TFl=
TR × V × (sHc + 1)
∆
TFl Flow temperature setpoint change
∆
TR Room temperature setpoint change
V
Room influence
During boost heating, the room temperature setpoint boost also produces an increase
of the flow temperature setpoint. In that case, the greatest of the 2 values is used for
generating the setpoint.
TRBoost
SpTR
+
TR
-
The resulting room temperature setpoint has a minimum limitation of 5 °C and a maxi-
mum limitation of 35 °C.
10.6.4 Heating limit switch
The heating limit switch can restrict the amount of heat delivered to the heating circuit.
This prevents the waste of heating energy at higher outside temperatures.
To determine the heating limit, the following outside temperature values are taken into
consideration (refer to subsection 10.6.1 "The composite and the attenuated outside
temperature"):
• The current outside temperature TO
• The composite outside temperature TOeff
• The attenuated outside temperature TOstrDmp
• When all 3 temperatures lie 1 °C below the Comfort heating limit, heat will be re-
leased in Comfort
• When 1 of the 3 temperatures lies above the Comfort heating limit, the delivery of
heat will be locked
⇒
If a change was made to "Continuously Comfort", the heating limit function is inactive,
which means that continuous heating is provided in accordance with the heating curve.
Exempted from this is the room control combination with an RMU7... ventilation controller.
Boiler Sequence Controller RMK770
10 Heating circuit control
Range
---- (none) / 0...10
TFl
SpTFlDe
+
SpTFlHi
-
SpTRN
SpTR
+
-
-
TR × V
20 °C
∆
TV, the change of flow temperature setpoint
TR
-
TR × V
and Precomfort
mode.
Factory setting
----
+
+
TODe
TOHi
TOeff
sHc Heating curve slope
Sp
Setpoint
TRx Room temperature
MAX
TReff
TFl
163/226
CE1P3132en
01.03.2005
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