Cooling Release; Heat Distribution System; Adjustment Of The Return Setpoint Temperature Under Room Temperature Influence - Alpha-InnoTec RBE Operating Manual

COOLING RELEASE

Here there are 2 options for releasing and activating cooling:
• Purely according to outdoor temperature
If the outdoor temperature release that has been set is exceeded over the
defined time period the heat pump switches to cooling mode.
RBE operating manual, see "Cooling"
Trained installers' operating manual, see "Cooling – Setting the
parameters"
Comfort circuit board operating manual, see "Comfort cooling –
Setting the parameters"
According to outdoor temperature & room temperature
•
influence
If the room temperature release that has been set is exceeded over
the defined time period the heat pump control checks the outdoor
temperature release. If the outdoor temperature release is also available
the heat pump switches to cooling mode.
RBE operating manual, see "Cooling"

HEAT DISTRIBUTION SYSTEM

The heat distribution system parameter limits the maximum adjustment
of the return setpoint temperature of the heat pump control:
• Underfloor heating max. +/- 2 K
• Radiators / fan coils max. +/- 4 K
83032600bUK– Translation into English of the original German operating manual – Subject to technical change without notice.
ADJUSTMENT OF THE RETURN SETPOINT TEMPERATURE
UNDER ROOM TEMPERATURE INFLUENCE
The room temperature influence is basically calculated using the
following formula:
– t ) * f
(t
Room setpoint Room actual
t = room setpoint temperature
Room setpoint
t = current room temperature
Room, actual
f = influencing factor RT 0...200 %
RT
T setpoint = return setpoint temperature in the heat
RL
pump control
NOTE
Control with room temperature influence is compatible with heating and
cooling mode. Maximum flow and return temperature limits for heating
and cooling remain active in order to protect the components integrated
in the system.
The following shows 3 examples in which the control principle is illustrated:
Example 1:
Increasing the return setpoint temperature in heating mode:
Return setpoint temperature = 28 °C
Underfloor heating
Room temperature = 19 °C
Room setpoint temperature = 22 °C
Influencing factor selected in the heat pump controller: 50 %
(22 °C - 19 °C) * 50 % = 1.5 K
--> check < 2 K --> YES --> Return setpoint adjustment --> 29.5 °C
Example 2:
Lowering the return setpoint temperature in heating mode:
Return setpoint temperature = 30°C
Underfloor heating
Room temperature = 22°C
Room setpoint temperature = 20°C
Influencing factor selected in the heat pump controller: 50%
(20 °C - 22 °C) * 50 % = - 1 K
--> check < 2 K --> YES --> Return setpoint adjustment --> 29 °C
Example 3:
Lowering the flow temperature (mixing circuit) in cooling mode:
Flow temperature, mixing circuit, cooling = 18 °C
Underfloor heating
Room temperature = 24 °C
Room setpoint temperature = 22 °C
Influencing factor selected in the heat pump controller: 50 %
(22 °C - 24 °C) * 50 % = - 1 K
--> Check < 2 K --> YES --> Cooling flow temperature adjustment
--> 17 °C --> if minimum cooling flow temperature 17 °C allowed
--> yes --> if not, no adjustment!
= T setpoint adjustment
RT RL
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