39NIBE BA-SVM 10-200 Section 4 | Description of functions
Current menus
Menu Name Factory setting
5.1.14 DUT - 18
5.1.23 Frequency curve
heating
Auto
Frequency curve hot
water
Auto
Frequency curve
cooling
Auto
5.11.X.1 Cooling permitted No
Silent mode
permitted
Compressor phase L3
Defrosting On/Off-controlled compressor
When EB 101 initiates defrosting, control is follows:
Defrosting to water heater
If there is insufficient energy in the heating system,
defrosting occurs to water heater.
Defrosting to water heater is performed in following
cases:
• Return temperature BT3 is less than TankDefrost-
Temp (see diagram below).
• The temperature of BT12 is less than 10 °C.
• The value on BT3 - BT12 is greater than Min-
Flow-Threshold (see diagram below).
• Heating is blocked.
If any of the following occurs for longer than 40 sec-
onds, during defrosting to the system, defrosting oc-
curs to the water heater:
• The temperature of BT12 is less than 10 °C.
• BT3 - BT12 is greater than MinFlowThreshold.
If the value of BT3 is less than TankDefrostTemp
must be:
• Hot water prioritised until TankDefrostTemp
achieved, i.e. QN10 is towards hot water and ad-
ditional heat (EB1) is used for TankDefrostTemp +
5 °C has been reached.
After completed defrosting the compressor resumes
to meet the demands it made before defrosting.
Conditions for tank defrosting depending on the val-
ue for -BT3.
10
20
30
40
Tank defrost
temperatur
U
OU
Tank defrost
Temperature return
BP4
Outdoor temp
°C
°C
Tank defrost
temperature
Conditions for tank defrosting depending on the val-
ue for BT3 -BT12.
10
20
30
50
40
Utomhustem
MinFlow Threshold = 0,3113*SST + 15,509
BP4
emperature return
BP4
Outdoor temp
°C
°C