Switch Box Component List; Field Wiring; Procedure - Daikin Altherma ERLQ018BAVJU Manuel D'installation

Be sure to install a ground fault circuit interrupter in
accordance with the applicable legislation. Failure to do
so may cause electric shock or fire.
Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.
When installing the ground fault circuit interrupter be sure
that it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary opening
of the ground fault circuit interrupter.
The ground fault circuit interrupter must be a high speed
type breaker of 30 mA (<0.1 seconds).
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 a
capacitor abnormal heating accident due to high-
frequency waves. Therefore, never install a phase
advancing capacitor.
Be sure to install the required fuses or circuit breakers.
Use a cable long enough to cover the entire distance. Do
not use an extension cord.
CAUTION
For use of units in applications with temperature alarm
settings its advised to foresee a delay of 10 minutes for
signalling the alarm in case the alarm temperature is
exceeded. The unit may stop for several minutes during
normal operation for "defrosting he unit", or when in
"thermosta-stop" operation.

13.1. Switch box component list

AC1,AC2.......................Connector
E1,E2............................Connector
E1H...............................Bottomplate heater
FU1...............................Fuse, T 30 A/250 V
FU2,FU3 .......................Fuse, T 3.15A/250 V
FU4,FU5 .......................Fuse, F 1 A/250 V
HR1,HR2 ......................Connector
L1,L2.............................Live
L1R ...............................Reactor
LED A ...........................Light emitting diode
M1C ..............................Compressor motor
M1F ..............................Fan motor
MRC/W .........................Magnetic relay
MRM10,MRM20 ...........Magnetic relay
PCB1,2 .........................Printed circuit board
PM1 ..............................Power module
Q1DI .............................Ground fault circuit interruptor
Q1L...............................Overload protector
R1T...............................Thermistor (discharge)
R2T...............................Thermistor (heat exchanger)
R3T...............................Thermistor (air)
S2~S102.......................Connector
SA2...............................Surge arrester
Sheet metal ..................Terminal strip fixed plate
SW1..............................Forced operation ON/OFF switch
SW4..............................Local setting switch
U,V,W............................Connector
V2,V3,V5,V9,V100........Varistor
X11A,X12A ...................Connector
ERLQ018~030BAVJU
Outdoor unit for air to water heat pump
4PW62590-1 – 07.2010
X1M,X2M ..................... Terminal strip
X1Y .............................. Connector
Y1E .............................. Electronic expansion valve coil
Y1R .............................. Solenoid valve (reversing valve)
Z1C~Z7C ..................... Ferrite core

13.2. Field wiring

Procedure

1 Strip the insulation from the wire 0.79 inch (20 mm).
2 Connect the connection wires between the indoor and outdoor
units so that the terminal numbers match (see wiring diagram
below). Tighten the terminal screws securely. We recommend a
flathead screwdriver to tighten the screws.
See also caution 2 under "Notes to observe" on page 13 for
wiring guidelines.
1 2 3 X1Y.1 X1Y.2
X2M
1 2 3
X1Y.1 X1Y.2
1 2 3 15 15a
1
2
3
15
15a H05VV
1
1 Interconnection between indoor unit and outdoor unit: when
wire length exceeds 32.8 ft (10 m), use AWG14 (Ø2.5 mm)
wires instead of AWG16 (Ø1.5 mm wires).
2 Power supply cable (refer to the unit nameplate for maximum
running current)
3 Ground
4 Fuse or circuit breaker
5 Ground fault circuit interrupter
3 Ground terminal installation
WARNING
This unit must be grounded.
For grounding, follow the applicable legislation for
electrical installations.
Do not use tapped wires, stranded conductor
wires (see caution 1 under "Notes to observe" on
page 13), extension cords, or connections from a
star system, as they may cause overheating,
electrical shock or fire.
Do not use locally purchased electrical parts
inside the product and do not branch the power
for the heater tape, etc., from the terminal block.
Doing this may cause electrical shock or fire.
Use the following method when installing single core wires.
3 2
A A'
1
1 Single core wire
2 Screw
3 Flat washer
X1M
2
L1L2
1~ 60 Hz
L1
L2 208/230 V
3 4 5
AA'
3
1
Installation manual
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