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LWZ 304 Trend | LWZ 404 Trend | LWZ 304 Integral |
45
INSTALLATION
Specification
11.3 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
Heating return temperature sensor - 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
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 emergency/booster heat-
er 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
Evaporator ice-up monitor
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
X3
Power supply
X4
Control voltage
X5
Terminal, external temp. sensor and CAN BUS
X6
Booster heater power supply
A1-X1 Connector X1, temperature sensor, 8-pin
A1-X2 Connector X2, temperature sensor, 12-pin
A1-X3 Connector X3, circulation pump
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-X6 Connector X6, remote maintenance, 4-pin
A1-X7 Connector X7, CAN-BUS
A1-X8 Connector X8, CAN BUS, programming unit
A1-X10 Expansion valve, evaporator
A1-X11 Expansion valve, heat pipe
A1-X12 Connector X12, supply air fan
A1-X13 Connector X13, extract air fan
A1-X14 Connector X14, 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-X25 Connector X25, USB interface
X24
Earth tab terminal assembly
X26
Connector, remote maintenance, 3-pin
X27
Connector, CAN BUS, programming unit
X30
Plug-in earth block
X31
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
X39
L-Block
X40
Plug-in connector
X44
Terminal, 4-pin
X46
Earth plug
X47
Earth plug
Y1
Diverter valve, defrost
Z1
Anti-interference suppressor
Z2
Anti-interference suppressor