When cables are routed from the unit, a protection sleeve for the
conduits (PG-insertions) can be inserted at the knock-out hole.
(See figure 3)
1
Wire
2
Bush
3
Nut
4
Frame
5
Hose
A
Inside
B
Outside
When you do not use a wire conduit, be sure to protect the wires
with vinyl tubes to prevent the edge of the knock-out hole from
cutting the wires.
Follow the electric wiring diagram for electrical wiring works.
Form the wires and fix the cover firmly so that the cover may be
fit in properly.
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 (N•m)
M4 (X1M)
M5 (X1M)
M5 (EARTH)
Refer to the installation manual attached to the indoor unit for
wiring of indoor unit, etc.
Attach an earth leakage circuit breaker and fuse to the power
supply line. (See figure 6)
1
Earth leakage circuit breaker
2
Fuse
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.
Installation manual
11
1.2~1.8
2.0~3.0
3.0~4.0
Specifications of standard wiring components
(a)
Minimum circuit amps (MCA)
Recommended field fuse
(b)
Wire type
Size
Wire type of wiring between the units
(a) Stated values are maximum values (see electrical data of combination with
indoor unit for exact values).
(b) Only in protected pipes, use H07RN-F when protected pipes are not used.
The earth leakage circuit breaker must be a high-
NOTE
speed type breaker of 30 mA (<0.1 s).
For V3 model: Equipment complying with EN/IEC 61000-3-12
The wiring diagram can be found on the inside of the front plate of the
unit.
T
EST OPERATION
WARNING
Live parts can be easily touched by accident.
Never leave the unit unattended during installation or
servicing when the service panel is removed.
NOTE
Note that during the first running period of the unit,
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
Earth wire
there are no missing phases or reverse phases.
Is the unit properly earthed?
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.
Test run
Carry out the test run in accordance with the indoor installation
manual to ensure that all functions and parts are working properly.
(1) European/International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage systems
with input current >16 A and ≤75 A per phase.
RRHQ0011~016AAV3(8) + RRHQ011~016AAW18
V3
W1
28.2
13.5
32 A
20 A
H05VV-U3G
H05VV-U5G
Wiring size must comply with the
applicable local and national code
H05VV-U4G2.5
(1)
Outdoor unit for air to water heat pump
4PW50202-1