Alpha-InnoTec RBE+ - Cooling Release; Heat Distribution System; Adjustment of the Return Setpoint Temperature under Room Temperature Influence

9
Subject to change without notice | 83030100dUK | ait-deutschland GmbH
7. 2 Cooling release
OT Releasing of cooling purely according to out-
door temperature
If the outdoor temperature release that has
been set is exceeded over the defined time
period the heat pump switches to cooling
mode.
OT+RT Releasing of cooling according to outdoor
temperature and room temperature influence
If the room temperature release that has
been set is exceeded over the defined time
period the heat pump controller checks the
outdoor temperature release.
If the outdoor temperature release is also
available the heat pump switches to cooling
mode.
 “9.2.8 Function page “Cooling””, page 17
 Operating manual of the heating and heat pump
controller, part 2, and for its software version F1 /
V2 of the Comfort board, section “Cooling”, “Set
parameters“
7.3 Heat distribution system
The parameter “heat distribution system” (= “heat.dis-
trib.sys.”) limits the maximum adjustment of the return
setpoint temperature of the heat pump controller:
UFH Underfloor heating, max. +/- 2 K
RAD Radiators / fan coils, max. +/- 4 K
► Save the settings.
8 Adjustment of the return
setpoint temperature under
room temperature influence
The room temperature influence is basically calculat-
ed using the following formula:
(t
Room targ.
– t
Room act.
)
x
f
RT
= Adjustment T
RL Setp.
t
Room targ.
Target room temperature
t
Room act.
Current room temperature
t
RT
Influencing factor RT (0 % … 200 %)
t
RL Setp.
Return setpoint temperature in the heat-
ing and heat pump controller
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 or-
der to protect the components integrated in
the system.
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
Current room temperature = 19 °C
Target room temperature = 22 °C
Influencing factor RT: 50 %
Calculation: (22 °C - 19 °C)
x
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
Current room temperature = 22 °C
Target room temperature = 20 °C
Influencing factor RT: 50 %
Calculation: (20 °C - 22 °C)
x
50 % = 1 K
⇒ Check < 2 K ⇒ YES ⇒ Return setpoint adjustment
⇒ 29 °C