STIEBEL ELTRON LWZ 404 SOL Installation Manual

ENGLISH
www.stiebel-eltron.com LWZ304-404 SOL | 49
INSTALLATION
Specication
11.2 Wiring diagram
The appliance wiring diagram is printed on both of the following pages. The wiring diagram has been split vertically due to its size.
Key
A1 Integral control unit
A2 Programming unit
B1 Temperature sensor, heating flow – PT1000
B2 Temperature sensor, heating return – PT1000
B4 Temperature sensor, cylinder
B5 Hot gas temperature sensor – PT1000
B7 Compressor intake temperature sensor – PT1000
B8 Evaporator discharge temperature sensor – PT1000
B9 Temperature sensor, condenser (frost protection)
B11 Temperature sensor, HP flow – PT1000
B12 Temperature sensor, HP return – PT1000
B13 Temperature sensor, defrost end (evaporator inlet)
B14 Temperature sensor, evaporator discharge
B15 Humidity sensor, extract air
E1 Instantaneous water heater (MFG)
E2 Booster heater 2.0 kW (option)
F2 High limit safety cut-out for MFG
F3 High limit safety cut-out for
Booster heater2.0kW (option)
F4 High pressure switch (HP)
F6 Condensate pump microfuse
K1 Compressor contactor
M1 Compressor motor
M2 Circulation pump motor
M3 Motor, diverter valve (heating/DHW)
M4 Motor, supply air fan
M5 Motor, extract air fan
M6 Motor, heat pump fan
M7 Motor, electronic expansion valve, evaporator
M9 Motor, electronic expansion valve, heat pipe
M11 Motor, condensate pump, bottom plate
N1 Temperature controller, emergency/booster heater
2.0kW (option)
N2 Differential pressures switch, evaporator defrosting
P1 High pressure transducer
P2 Signal anode
P3 Low pressure transducer
P4 Pressure sensor, heating (water)
P5 Flow sensor, heating
S3 Reset button
S4 Float switch, bottom panel
X1 Lower terminals
X2 Upper terminals
X3 Power supply
X4 Terminal, 3-way valve, heating circuit 2 and solar circuit
pump
X5 Connection for external temperature sensors, CAN BUS
and PWM/0-10V external pumps
A1-X1 Connector X1, temperature sensor, 8-pin
A1-X2 Connector X2, temperature sensor, 12-pin
A1-X3 Connector X3, circulation pump / external pumps
A1-X4 Connector X4, LV input:
Pressure and humidity sensor, float switch
A1-X5 Connector X5, pressure transducer HP/LP
A1-X51 Connector X51, flow sensor
A1-X7 Connector X7, CAN-BUS
A1-X8 Connector X8, CAN BUS, programming unit
A1-X9 Connector X9, USB interface
A1-X12 Connector X12, supply air fan
A1-X13 Connector X13, extract air fan
A1-X14 Connector X12, heat pump fan
A1-X15 Connector X15, input
A1-X16 Connector X16, mains power
A1-X17 Connector X17, output 1
A1-X18 Connector X18, output 2
A1-X19 Connector X19, compressor
A1-X20 Connector X20, DHC input/output
A1-X22 Connector X22, pressure differential sensor, evaporator
ice build-up
A1-X25 USB port
X24 Earth tab terminal assembly
X26 Connector, remote maintenance, 3-pin
X27 Connector, CAN BUS, programming unit
X30 Earth plug-in block, lower control panel
X32 Earth block, terminal bracket
X33 Supply air fan power supply
X34 Extract air fan power supply
X35 Heat pump fan power supply
X37 Terminal, 3-pin
X38 N block
X40 Plug-in connector
Y1 Diverter valve, defrost
Z3 Anti-interference suppressor
Z5 Ferrite toroid, HP fan

STIEBEL ELTRON LWZ 404 SOL Specifications

General

Brand	STIEBEL ELTRON
Model	LWZ 404 SOL
Category	Fan
Language	English