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Optimum start control
With room model
Settings
Optimum stop control
Settings
Early shutdown max
Quick setback
Settings
Building Technologies
HVAC Products
10.7.2 Optimum start / stop control
The purpose of optimum start control is to reach a temperature level 0.25 K below the
Comfort or Precomfort setpoint when occupancy according to the time program starts.
For that, the heating circuit must be switched on at an earlier point in time.
If a room temperature sensor is connected, the controller calculates the forward shift
depending on the current room temperature. Also, the controller learns the necessary
heating up time per K room temperature.
When the required room temperature is reached, the time differential to the entered time
is determined. Based on the deviation ascertained, the controller can readjust the heating
up time per K room temperature and calculate the next forward shift with this new value.
If no room temperature sensor is connected, or when the room model shall be used, the
rate of room temperature increase (duration in min/K) can be set.
The maximum forward shift can also be set. When entering 0 hours as the maximum
heating up time, optimum start control is deactivated.
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Heating circuit > Optimizations/influences
Operating line
Forward shift on max
Room temperature rise
Optimum stop control switches the heating circuit off at the earliest possible point in
time so that – when the time switch changes from Comfort
omy
or Protection
Precomfort setpoint.
⇒
Optimum stop control is only possible if the type of optimization selected is "with room
temperature sensor".
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Heating circuit > Optimizations/influences
Operating line
Early shutdown max
Early shutdown max limits the maximum forward shift. If 00:00 is set, optimum stop
control is deactivated.
10.7.3 Quick setback and boost heating
The purpose of quick setback is to reach the new setpoint as quickly as possible when
changing the room operating mode.
When quick setback is active, the heating circuit pump is switched off and the heating
circuit mixing valve shut. The heating circuit remains switched off until the required
room temperature is reached.
The "Quick setback" function can be deactivated on the service level.
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Heating circuit > Optimizations/influences
Operating line
Quick setback
Quick setback is started when the room operating mode changes from Comfort
Precomfort to Economy or Protection
temperature has reached the new setpoint or when a change back to Comfort
is made.
Boiler sequence controller RMK770
10 Heating circuit control
Range
0...48 h
1...600 min/K
mode – the room temperature will lie 0.5 K below the Comfort or
Range
00.00...06:00 h.min
Range
Off / On
. The function is ended when the room
Factory setting
6 h
60 min/K
or Precomfort
to Econ-
Factory setting
00:00 h.min
Factory setting
On
or
mode
171/232
CE1P3132en
23.04.2009
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