Installation manual
14
EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
10. P
IPING
CONNECTION
WORK
Refer to the installation manual of the EBHQ outdoor unit.
11. E
LECTRICAL
WIRING
WORK
11.1. Precautions on electrical wiring work
■
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 the applicable
legislation.
■
Use only copper wires.
■
All field wiring must be carried out in accordance with the
wiring diagram supplied with the unit and the instructions
given below.
■
Never squeeze bundled cables and be sure that it does
not come in contact with the non-insulated piping and
sharp edges. Be sure no external pressure is applied to
the terminal connections.
■
Power supply wires must be attached securely.
■
If the power supply has a missing or wrong N-phase,
equipment will break down.
■
Be sure to establish an earth. Do not earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
■
Be sure to install an earth leakage protector in
accordance with the applicable legislation. Failure to do
so may cause electric shock or fire.
■
Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.
■
When installing the earth leakage protector be sure that
it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
■
Be sure to install the required fuses or circuit breakers.
11.2. Outdoor unit – Internal wiring – Parts table
Refer to the wiring diagram sticker on the top plate of the outdoor
unit. The abbreviations used are listed below:
A3P,A4P....................Printed circuit board
E1,E2........................Connector
E1H...........................Expansion vessel heater
E2H...........................Bottom plate heater (option)
FU1...........................Fuse (30 A, 250 V)
FU2,FU3 ...................Fuse (F, 3.15 A, 250 V)
FU4,FU5 ...................Fuse (F, 1.0 A, 250 V)
HR1,HR2 ..................Connector
L1R ...........................Reactor
LED A .......................Pilot lamp
M1C ..........................Motor (compressor)
M1F ..........................Motor (fan)
M1P ..........................Pump
MRC/W .....................Magnetic relay
MRM10,MRM20 .......Magnetic relay
PM1 ..........................Power module
Q1L...........................Overload protector
R1T~R3T ..................Thermistor
R11T.........................Outlet water heat exchanger thermistor
R13T.........................Refrigerant liquid side thermistor
R14T.........................Inlet water heat exchanger thermistor
S1L ...........................Flowswitch
S1T ...........................Thermostat expansion vessel heater
S2~S102...................Connector
SA2...........................Surge arrester
SW1..........................Forced operation ON/OFF SW (SW1)
SW4..........................Local setting SW (SW4)
U ...............................Connector
V ...............................Connector
V2,V3,V5,V9,V100....Varistor
W ..............................Connector
X1M~X4M.................Terminal strip
X1Y~X4Y ..................Connector
X11A,X12A ...............Connector
X13Y.........................Connector (indoor unit)
X14M ........................Terminal strip (indoor unit)
Y1E...........................Electronic expansion valve coil
Y1R...........................Reversing solenoid valve coil
Z1C~Z7C ..................Ferrite core
L................................Live
N ...............................Neutral
SHEET METAL .........Terminal strip fixed plate
..................Field wiring
....................Terminal strip
....................Connector
............................Terminal
.............................Protective earth
BLK...........................Black
BLU...........................Blue
BRN ..........................Brown
GRN..........................Green
GRY ..........................Grey
ORG .........................Orange
PNK ..........................Pink
RED ..........................Red
VIO ...........................Violet
WHT .........................White
YLW ..........................Yellow
WARNING: Electrical installation
All field wiring and components must be installed by an
installer and must comply with the applicable legislation
DANGER: ELECTRICAL SHOCK
"2. General safety precautions" on page 2
WARNING
CAUTION: Radio frequency interference
The equipment described in this manual may cause
electronic noise generated from radio-frequency energy.
The equipment complies to specifications that are
designed to provide reasonable protection against such
interference. However, there is no guarantee that
interference will not occur in a particular installation.
It is therefore recommended to install the equipment and
electric wires keeping proper distances away from stereo
equipment, personal computers, etc....
In extreme circumstances you shall keep distances of 3 m
or more and use conduit tubes for power and transmission
lines.
For more details, refer to the
