• hot water (hot water production). Any hot water circulation
(HWC) remains in operation.
• compressor
• internally controlled additional heat
• tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
Possible selections for AUX output
Indications
• alarm
• low electricity price (Smart Price Adaption)
• defrosting ambient air collector (only applies if there are
cooling accessories)
• common alarm
• cooling mode indication (only applies if there are cooling
accessories)
• extra cooling (only applies if there are cooling accessories)
• delayed cooling mode indication (only applies if there are
cooling accessories)
• holiday
• away mode
Control
• circulation pump for hot water circulation
• external heating medium pump
• ground water pump
• external reversing valve for hot water
NOTE
The relevant distribution box must be marked with
a warning about external voltage.
Connecting external circulation pump
An external circulation pump is connected to the AUX out-
put, as illustrated below.
1
2
3
NO
C
NC
AA2-X27
L N PE
L
N
PE
Settings
ELECTRICAL ADDITION - MAXIMUM OUTPUT
The immersion heater’s power is set in menu 7.1.5.1 - "Int
elec add heat".
Power steps of the immersion heater
The table(s) displays the total phase current for the immer-
sion heater.
1x230 V S1156-8
Max phase current L1(A)Max electrical
addition (kW)
–0.0
2.20.5
4.31.0
6.51.5
8.72.0
10.92.5
13.03.0
15.23.5
17.44.0
19.64.5
1
1
Factory setting
1x230 V, S1156-13
Max phase current L1(A)Max electrical
addition (kW)
–0.0
4.31.0
8.72.0
13.03.0
17.44.0
21.75.0
26.16.0
30.47.0
1
1
Factory setting
In addition to this, there is the current for compressor oper-
ation.
NIBE S1156Chapter 5 | Electrical connections28