Mixing Valve Control; Control - Siemens Synco 700 Series Basic Documentation

Comfort heating limit
Economy heating limit
Heating limit with preset
Comfort mode
Summer / winter operation
(information for ventilation)
Setpoint
3-position / DC 0...10 V
actuator
168/232
Building Technologies
HVAC Products
• When all 3 temperatures lie 1 °C below the Comfort heating limit, heat is released in
Comfort and Precomfort
• When 1 of the 3 temperatures lies above the Comfort heating limit, the delivery of
heat is 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 RMU7xxB controller.
• When all 3 temperatures lie 1 °C below the Economy heating limit, heat is released
in Economy and Protection
• When 1 of the 3 temperatures lies above the Economy heating limit, delivery of heat
is locked
Comfort
heating limit
Eco
heating limit
HDCmf
HDEco
Whether or not the heating limit function shall be active in "Continuously Comfort
mode can be selected on the Space heating menu.
This selection is always active, irrespective of whether the operating mode was se-
lected via the operator unit or the room unit, or whether – on the basis of the room
operating mode contact – it was switched to "Continuously Comfort
this is the room control combination with an RMU7xxB ventilation controller, in which
case the heating limit always takes effect.
For operation in combination with the ventilation controller, summer / winter operation
changeover is used as an overriding function.
When the attenuated outside temperature exceeds the Comfort heating limit, a change
to summer operation is made; this also applies to "Continuously Comfort
10.6

Mixing valve control

10.6.1 Control

The flow temperature setpoint determined by weather-compensated heating circuit
control produces the effective setpoint for mixing valve control while giving considera-
tion to load control.
Mixing valve control can be accomplished with a 3-position mixing valve or a mixing
valve using DC 0...10 V control. The type of actuator is selected in the extra configura-
tion.
The following mixing valve settings apply to both the 3-position mixing valve and the
DC 0...10 V actuator:
Boiler Sequence Controller RMK770
10 Heating circuit control
mode
mode
TOStrDmp
"
".
Exempted from
"
.
CE1P3132en
23.04.2009