Field Wiring; Precautions On Electrical Wiring Work - Daikin EDLQ036BA6VJU1 Manuel D'installation

Field wiring

WARNING
A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with
relevant local laws and regulations.
Switch off the power supply before making any
connections.
Use only copper wires.
Never squeeze bundled cables and make sure that it
does not come in contact with the piping and sharp
edges.
Make sure no external pressure is applied to the
terminal connections.
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
local laws and regulations.
The field wiring must be carried out in accordance
with the wiring diagram supplied with the unit and the
instructions given below.
Be sure to use a dedicated power supply. Never use a
power supply shared by another appliance.
Be sure to establish a ground. Do not ground the unit
to a utility pipe, surge absorber, or telephone ground.
Incomplete ground may cause electrical shock.
Be sure to install a ground fault circuit interrupter
(30 mA). Failure to do so may cause electrical shock.
Be sure to install the required fuses or circuit
breakers.

Precautions on electrical wiring work

Fix cables so that cables do not make contact with the pipes
(especially on high pressure side).
Secure the electrical wiring with cable ties as shown in figure 2
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 ground fault circuit interrupter make sure
that it is compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the ground
fault circuit interrupter.
NOTE The ground fault circuit interrupter must be a high-
speed type breaker of 30 mA (<0.1 s).
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.
EDLQ036~054BA6VJU1 + EBLQ036~054BA6VJU1
Unit for air to water heat pump system
4PW56182-1
Overview
The illustration below gives an overview of the required field wiring
between several parts of the installation. Refer also to "Typical
application examples" on page 7.
4
B C
3
1 2
A 10 9
A Single power supply for
unit, backup heater and
booster heater
B Unit
C Backup heater
D User interface
E Room thermostat (field
supply, optional)
Item Description
1 Power supply cable for unit
2 Power supply cable for backup
heater
3 Room thermostat cable
4 User interface cable
5 3-way valve control cable
6 2-way valve control cable
7 Booster heater power supply
and thermal protection cable
8 Thermistor cable
9 Booster heater power supply
cable
10 Benefit kWh rate power supply
cable (voltage free contact)
(a) Refer to nameplate on outdoor unit
(b) See table under "Connection of the backup heater power supply" on page 19.
(c) Minimum cable section AWG18 (0.75 mm
(d) Cable section AWG18 till AWG16 (0.75 mm
1640 ft (500 m).
(e) The thermistor and connection wire (40 ft (12 m)) are delivered with the domestic
hot water tank.
(f) Cable section AWG18 till AWG16 (0.75~1.25 mm
(500 m). Voltage free contact shall ensure the minimum applicable load of
15 V DC, 10 mA.
2
1
3
4
D
I
E
T
5
F
M
6
G
M
H
7 I
8
F 3-way valve for domestic
hot water tank (field
supply, optional)
G 2-way valve for cooling
mode (field supply,
optional)
H Domestic hot water tank
(optional)
I Booster heater
(optional)
Required Maximum
AC/ number of running
DC conductors current
(a)
AC 2+GND
(b)
AC 2+GND
AC 3 or 4 100 mA
(d)
DC 2 100 mA
(c)
AC 2+GND 100 mA
(c)
AC 2+GND 100 mA
(b)
AC 4+GND
(e)
DC 2
AC 2+GND 13 A
(f)
DC 2 100 mA
2
)
2 2
till 1.25 mm ), maximum length:
2
), maximum length: 1640 ft
1 Knock out hole for unit power
supply cable entry
2 Knock out hole for backup
heater power supply cable
entry
3 Cap for low voltage cables
entry (<30 V)
4 Knock out holes for other
power cables entry
Installation manual
17
(c)