Installation manual
21
ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW57794-1 – 08.2010
■
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.
■
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.
14.4. Electrical characteristics
ERHQ models
For V3 models: Equipment complying with EN/IEC 61000-3-12
(1)
ERLQ models
For V3 models: This equipment complies with respectively:
■
EN/IEC 61000-3-11
(2)
provided that the system impedance Z
sys
is less than or equal to Z
max
and
■
provided that the short-circuit power S
sc
is greater than or equal to the minimum S
sc
value
at the interface point between the user's supply and the public
system. It is the responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
respectively:
■
a system impedance Z
sys
less than or equal to Z
max
and
■
a short-circuit power S
sc
greater than or equal to the minimum
S
sc
value.
For W1 models: Equipment complying with EN/IEC 61000-3-12
The wiring diagram can be found on the inside of the front plate of the
unit.
15. T
EST
OPERATION
15.1. Pre-run checks
■
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.
■
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).
15.2. 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
Earth leakage circuit breaker
2
Fuse
3
Remote controller
ERHQ_V3
ERLQ_V3
ERHQ_W1
ERLQ_W1
Phase and frequency
1~ 50 Hz
3N~ 50 Hz
Voltage
230 V
400 V
Recommended field
fuse
32
A
40 A
20 A
Minimum circuit
amps
(a)
(a) Stated values are maximum values (see electrical data of combination with
indoor unit for exact values).
28.2 A
34.2 A
13.5 A
16.3 A
Wire type of wiring
between the units
Minimum cable section of 2.5 mm
2
and applicable for 230 V
CAUTION
Select all cables and wire sizes in accordance with
applicable legislation.
CAUTION
After finishing the electrical work, confirm that each electric
part and terminal inside the electric part box is connected
securely.
(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.
(2) European/International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current
≤
75 A.
Z
max
(
Ω
)
Minimum S
sc
value
ERLQ011CAV3
0.22
525 kVA
ERLQ014CAV3
0.22
525 kVA
ERLQ016CAV3
0.22
525 kVA
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,
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.
Items to check
Electrical wiring
Inter-unit wiring
Earth wire
■
Is the wiring as mentioned on the wiring diagram?
Make sure no wiring has been forgotten and that
there are no missing 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 M
Ω
?
-
Use a 500 V mega-tester when measuring
insulation.
-
Do not use a mega-tester for low-voltage circuits.
Refrigerant
piping
■
Is the size of the piping appropriate?
■
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
refrigerant
■
Did you write down the extra refrigerant and the
refrigerant piping length?
