Electric Emergency/Booster Heater; Control Voltage; Low Voltage, Bus Cable And Service - STIEBEL ELTRON HSBB 3 Bedienung Und Installation

INSTALLATIoN
Power supply
MCB/fuse Assignment
rating
B 16 A Electric emergency/
booster heater
(DHC)
B 16 A Control cable
Electrical data is provided in chapter "Specification / Data table".
Material losses
!
Provide separate fuses/MCBs for the two power circuits,
i.e. for the compressor and the electric emergency/boost-
er heater circuits.

12.1 Electric emergency/booster heater

General
Appliance effect of the electric emergency/booster heater
function
Mono energet- If the heat pump undershoots the dual mode point, the elec-
ic operation tric emergency/booster heater safeguards both the heating
operation and the delivery of high DHW temperatures.
Emergency Should the heat pump suffer a fault that prevents its contin-
mode ued operation, the heating output will be covered by the elec-
tric emergency/booster heater.
Power connection
X3 electric emergency/booster heater (dHC)
L1, L2, L3, N, PE
Connected load
2.9 kW
5.9 kW
8.8 kW

12.2 Control voltage

www.stiebel-eltron.com
Cable cross-section
2.5 mm² for routing through a wall.
1.5 mm² with only two live cores and
routing on a wall or in an electrical con-
duit on a wall.
1.5 mm²
Terminal assignment
L1 PE
L1 L2 PE
L1 L2 L3 PE
X4 Control voltage (control outputs)
DHW DHW charging pump and N (X25), PE
Zirk. DHW circulation pump N (X25), PE
2.WEWW 2nd DHW heat generator and N (X25), PE
M(Z) Mixer close
M(A) Mixer open
MKP Mixer circuit pump and N (X25), PE
HKP Heating circuit pump and N (X25), PE
KUE/Solar Solar circuit pump / cooling output
2. WE Heat source 2 and N (X25), PE
EVU Enable signal
L (mains)
X24 Pe
X25 N
Material losses
!
f Only connect energy efficient circulation pumps ap- f
proved by us to the pump connections.
If you are using energy efficient circulation pumps that
have not been approved by us, use a relay with a break-
ing capacity of at least 10 A/250 V AC or our WPM-RBS
relay set.

12.3 Low voltage, BUS cable and service

X2 Safety extra low voltage
Fernb. 3 Remote control
Fernb. 1 Remote control
T(MK) Mixer circuit temperature sensor and earth (X26)
T(AUSSEN) Outside temperature sensor and earth (X26)
T(WW) DHW cylinder sensor
T(KOLL) Collector sensor
T(KUE)/T(WW) DHW temperature sensor, bottom, in the case of solar
connection
Flow sensor, in the case of cooling
T(2. WE) Temperature sensor, heat generator 2
T(Puffer) Buffer cylinder sensor
X1 Service (CAN BuS)
H High
L Low
⊥
Ground
+ (only in conjunction with FEK)
X26 gNd
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