Precautions On Wiring Of Power Supply And Inter-Unit Wiring; Test Operation; Pre-Run Checks - Daikin ERLQ036BAVJU Manuel D'installation

Precautions on wiring of power supply and inter-unit
wiring
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.
1 Round pressure terminal
2 Cut out section
3 Cup washer
1 2 3
- 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.
Tightening torque
M4 (X1M)
M5 (X1M)
M5 (ground)
Refer to the installation manual attached to the indoor unit for
wiring of indoor unit, etc.
Attach an ground fault circuit interrupter and fuse or circuit
breaker to the power supply line. (See figure 6)
1 Ground fault circuit interrupter
2 Fuse or circuit breaker
3 Remote controller
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.
Specifications of standard wiring components
Phase and frequency
Voltage
Maxilum overcurrent protection
(a)
Minimum circuit amps
Wire type of wiring between the Minimum cable section of AWG14
units (2.5 mm
(a) Stated values are maximum values (see electrical data of combination
with indoor unit for exact values).
Select all cables and wire sizes in accordance with
NOTE
relevant local laws and regulations.
After finishing the electrical work, confirm that each electric
part and terminal inside the electric part box is connected
securely.
The wiring diagram can be found on the inside of the front plate of the
unit.
Installation manual
12
0.89~1.33 lbs•ft (1.2~1.8 N•m)
1.48~2.21 lbs•ft (2.0~3.0 N•m)
2.21~2.95 lbs•ft (3.0~4.0 N•m)
ERLQ_VJU
2~ 60 Hz 2~ 60 Hz
208 V 230 V
30 A 30 A
26.5 A 26.5 A
2
) and applicable for 230 V
T
EST OPERATION
DANGER
Never leave the unit unattended during installation or
servicing. When the service panel is removed live parts
can be easily touched by accident.
Note that during the first running period of the unit,
NOTE
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates
from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and
stable power consumption.

Pre-run checks

Items to check
Electrical wiring Is the wiring as mentioned on the wiring diagram?
Inter-unit wiring Make sure no wiring has been forgotten and that
Ground wire there are no missing phases or reverse phases.
Is the unit properly grounded?
Is the wiring between units connected in series
correct?
Are any of the wiring attachment screws loose?
Is the insulation resistance at least 1 MΩ?
- Use a 500 V mega-tester when measuring
insulation.
- Do not use a mega-tester for low-voltage circuits.
Refrigerant Is the size of the piping appropriate?
piping
Is the insulation material for the piping attached
securely?
Are both the liquid and gas pipes insulated?
Are the stop valves for both the liquid side and the
gas side open?
Extra Did you write down the extra refrigerant and the
refrigerant refrigerant piping length?
Be sure to perform a test run.
Be sure to fully open the liquid-side and gas-side stop valves. If
you operate the unit with stop valves closed, the compressor will
break down.
Be sure to execute the first test run of the installation in cooling
mode operation.
Never leave the unit unattended with an open front panel during
test run.
To protect the compressor, make sure to turn on the power
supply 6 hours before starting operation.
During tests never pressurize the applications with a pressure
higher than the maximum allowable pressure (indicated on the
name plate of the unit).
Test run
Carry out the test run in accordance with the indoor installation
manual to ensure that all functions and parts are working properly.
ERLQ036~054BAVJU
Outdoor unit for air to water heat pump
4PW55905-1