Daikin EDLQ036BA6VJU1 Installation Manual page 21

Field wiring guidelines
■ Most field wiring on the unit is to be made on the terminal block
inside the switch box. To gain access to the terminal block,
remove the switch box service panel (door 2).
WARNING
Switch off all power supply – i.e. unit power supply
and backup heater and domestic hot water tank
power supply (if applicable) – before removing the
switch box service panel.
■
Cable tie mountings are provided at the bottom of the switch
box. Fix all cables using cable ties.
■
A dedicated power circuit is required for the backup heater.
Installations equipped with a domestic hot water tank (optional),
■
require a dedicated power circuit for the booster heater.
Please refer to the domestic hot water tank installation manual.
Secure the wiring in the order shown below.
Lay the electrical wiring so that the front cover does not rise up
■
when doing wiring work and attach the front cover securely (see
figure 2).
Follow the electric wiring diagram for electrical wiring works (the
■
electric wiring diagrams are located on the rear side of doors 1
and 2).
■
Form the wires and fix the cover firmly so that the cover may be
fit in properly.
Precautions on wiring of power supply
Use a round crimp-style terminal for connection to the power
■
supply terminal board. In case it cannot be used due to
unavoidable reasons, be sure to observe the following
instruction.
Round pressure terminal
1
Cut out section
2
Cup washer
3
1 23
Do not connect wires of different gauge to the same power
-
supply terminal. (Looseness in the connection may cause
overheating.)
When connecting wires of the same gauge, connect them
-
according to the below figure.
■
Use the correct screwdriver to tighten the terminal screws.
Small screwdrivers can damage the screw head and prevent
appropriate tightening.
■
Over-tightening the terminal screws can damage the screws.
■
See the table below for tightening torques for the terminal
screws.
M4 (X1M)
M5 (X1M)
M5 (GROUND)
Attach a ground fault circuit interrupter and fuse to the power
■
supply line.
In wiring, make certain that prescribed wires are used, carry out
■
complete connections, and fix the wires so that outside forces
are not applied to the terminals.
EDLQ036~054BA6VJU1 + EBLQ036~054BA6VJU1
Unit for air to water heat pump system
4PW56182-1
Tightening torque
lbs-ft (N·m)
0.88~1.33 1.2~1.8
1.48~2.21 2.0~3.0
2.21~2.95 3.0~4.0
Specifications of standard wiring components
Door 1: compressor compartment and electrical parts: X1M
2~ 60 Hz
Ground fault circuit interrupter
1
208 V/230 V
Fuse
2
L1 L2
1
2
L1 L2
X1M
Minimum circuit amps (MCA)
(a)
Maximum overcurrent protector (MOP)
Wiring size
(a) Stated values are maximum values (see electrical data for exact values).
NOTE The ground fault circuit interrupter must be a
high-speed type breaker of 30 mA (<0.1 s).
The wiring diagram can be found on the inside of the front plate of the
unit.
Connection of the backup heater power supply
Power circuit and cable requirements
Be sure to use a dedicated power circuit for the
■
backup heater. Never use a power circuit shared by
another appliance.
Use one and same dedicated power supply for the
■
unit, backup heater and booster heater (domestic hot
water tank).
This power circuit must be protected with the required safety devices
according to local laws and regulations.
Select the power cable in accordance with relevant local laws and
regulations. For the maximum running current of the backup heater,
refer to the table below.
Door 2: electrical parts of the hydraulic compartment: X10M
2~ 60 Hz
208 V/230 V Ground fault circuit interrupter
1
2 Fuse
L1 L2
1
2
L1 L2
X10M
Backup heater nominal voltage
Minimum circuit amps (MCA)
Maximum overcurrent protector (MOP)
NOTE The ground fault circuit interrupter must be a
high-speed type breaker of 30 mA (<0.1 s).
26.5
30 A
Wiring size must comply with the
applicable local laws and
regulations
Backup heater capacity
6 kW 3 kW
208 V/230 V 208 V/230 V
28.6 14.3
30 A 16 A
Installation manual
19