ERSQ+ERRQ011~Y1
Outdoor unit for air to water heat pump
4PW49635-1A
Installation manual
12
9.
E
LECTRICAL
WIRING
WORK
9.1.
Precautions on electrical wiring work
■
Before obtaining access to terminal devices, all supply circuits
must be interrupted.
■
Use only copper wires.
■
Do not turn on the main switch until all the wiring is completed.
■
Never squeeze bundled cables into a unit.
■
Secure the electrical wiring with clamping material as shown in
figure 8
so that it does not come in contact with the piping,
particularly on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.
■
When installing the earth leakage breaker make sure that it is
compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the earth
leakage breaker.
■
As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
■
Follow the "electrical wiring diagram" when carrying out any
electrical wiring.
■
Always ground wires. (In accordance with national regulations of
the pertinent country.)
■
Do not connect the ground wire to gas pipes, sewage pipes,
lightning rods, or telephone ground wires.
■
Combustion gas pipes: can explode or catch fire if there is a
gas leak.
■
Sewage pipes: no grounding effect is possible if hard plastic
piping is used.
■
Telephone ground wires and lightning rods: dangerous when
struck by lightning due to abnormal rise in electrical potential
in the grounding.
■
This unit uses an inverter, and therefore generates noise, which
will have to be reduced to avoid interfering with other devices.
The outer casing of the product may take on an electrical charge
due to leaked electrical current, which will have to be discharged
with the grounding.
■
For Y1 models only: Make sure to connect power supply cables
in normal phase. If connected in reverse phase, the remote
controller of the indoor unit indicates "
U1
" and the equipment
cannot operate. Change any two of the three power supply
cables (L1, L2, L3) to correct phase. (Refer to the installation
manual of the indoor unit for more details.)
■
A main switch or other means for disconnection having a contact
separation in all poles, shall be incorporated in the fixed wiring in
accordance with relevant local and national regulations.
9.2.
Internal wiring – Parts table
L ............................. Live
N ............................ Neutral
.................. Terminal strip
........... Field wiring
......................... Terminal strip
.......................... Connector
......................... Protective earth
.......................... Connection
....................... Relay connector
........................... Functional earthing
........................... Terminal
.......................... Movable connector
.......................... Fixed connector
BLU ........................ Blue
BRN ....................... Brown
GRN ....................... Green
RED ....................... Red
WHT....................... White
YLW ....................... Yellow
ORG....................... Orange
BLK ........................ Black
A1P ........................ Printed circuit board (main)
A2P ................# ..... Printed circuit board (inverter)
A2P ................ * ..... Printed circuit board (service)
A3P ................ * ..... Printed circuit board (noise filter)
BS1~BS5 ............... Push button switch (mode, set, return, test,
reset)
C1~C3.................... Capacitor
C4 .................. * ..... Capacitor
DS1 ........................ Dip switch
E1H ........................ Bottom plate heater
E1HC ..................... Crankcase heater
F1U,F4U ........ * ..... Fuse (T 6.3 A/250 V)
F1U,F2U ........# ..... Fuse (A 31.5 A/500 V)
F3U~F5U .......# ..... Fuse (T 6.3 A/250 V)
F6U ........................ Fuse (T 5.0 A/250 V)
FINTH ............ * ..... Thermistor (fin)
H1P~H8P ............... Light emitting diode (service monitor orange)
H2P: Prepare, test: blinking
H2P: Malfunction detection: light up
HAP (A1P) ............. Light emitting diode (service monitor green)
HAP (A2P) .....# ..... Light emitting diode (service monitor green)
K1M........................ Magnetic contactor (M1C)
K2M ...............# ..... Magnetic contactor
K1R ........................ Magnetic relay (Y1S)
K2R ........................ Magnetic relay (Y2S)
K3R ........................ Magnetic relay (Y3S)
K4R ........................ Magnetic relay (E1HC)
K5R ........................ Magnetic relay
L1R ........................ Reactor
L1R,L3R.........# ..... Reactor
M1C ....................... Motor (compressor)
M1F........................ Motor (fan) (upper)
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
European and national regulations.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)
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