Settings
6 720 645 172 (2010/07) en
16
4.4.1 Internal add. heat
The internal additional heat has three steps, E2.E1 (4.5
kW), E2.E2 (4.5 kW) and E2.E3 (6.75 kW). When all
stages are connected a total of 15.75 kW is obtained. A
degree minute calculation is used to activate each stage.
E2.E1: The compressor is running and E11.T1 does not
reach its set point value. Calculation of difference
between E11.T1 set point value – set Hysteresis (3 K)
and E11.T1 actual value are added continuously. When
the sum reaches the value set in Delay (180 °min) stage
1 is activated.
E2.E2: Stage 1 is connected and E11.T1 does not reach
its set point value. Calculation of difference between
E11.T1 set point value – set Hysteresis (3 K) and E11.T1
actual value are added continuously. When the sum
reaches the value set in Delay (60 °min) stage 2 is
activated.
E2.E3: Stage 2 is connected and E11.T1 does not reach
its set point value. Calculation of difference between
E11.T1 set point value – set Hysteresis (3 K) and E11.T1
actual value are added continuously. When the sum
Setting Factory Range HP
Additional heat
Additional heat type No additional heat
Comp. + add. heat
No additional heat
Internal add. heat
District heating
Modulated add. heat
Mixed add. heat
Only additional heat
Comp. + add. heat
Only compressor
E21
B Set applicable Additional heat type and desired additional heat operation. In Modulated add.
heat and Mixed add. heat is shown:
Settings
Start E71
Hysteresis
Delay
Actual v.:
3 K
180 °min
Display, can be changed
E21
Stop E71
Delay
Actual v.:
10°min
Display, can be changed
PID E71
P:
I:
D:
T1, Sp, Out
1
100
0
Display
B Set conditions for engaging/disengaging the additional heat.
B Set values for mixing valve control.
Actual and set point value for T1 is shown. In addition the output signal is shown in %.
Alarm delay
Alarm delay 30 min E21
The function is only displayed at Mixed add. heat.
B Set with what time alarm External add. heat out of order is to be delayed (Æ Chapter 5.6.25,
page 33).
ECO-drive
ECO-drive
Start
Stop after
No
22:00
6 hr
No, Yes
00:00 - 23:59
E21
B Indicate Yes if activation of the additional heat is to be delayed during a set time period.
The delay increases by 25%.
Tab. 35 Modulated additional heat, Mixed additional heat
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