Panasonic Aquarea WH-SXC12H6E5 User manual

© Panasonic Corporation 2017.
Indoor Unit Outdoor Unit
WH-SXC09H3E5
WH-SXC12H6E5
WH-UX09HE5
WH-UX12HE5
Destination
Europe
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be
replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission
of manufacturer.
IMPORTANT SAFETY NOTICE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
PRECAUTION OF LOW TEMPERATURE

WH-SXC12H6E5 WH-UX12HE5
Item Unit Outdoor Unit
Performance Test Condition EN 14511
Condition
(Ambient/Water) A35W7
kW 10.00
BTU/h 34100
Cooling Capacity
kcal/h 8600
W/W 2.81
Cooling EER kcal/hW 2.42
Condition
(Ambient/Water) A7W35 A2W35
kW 12.00 12.00
BTU/h 41000 41000
Heating Capacity
kcal/h 10320 10320
W/W 4.74 3.44
Heating COP kcal/hW 4.08 2.96
Low Temperature Application (W35)
Application Climate
Warmer Average Colder
Pdesign kW 12.0 12.0 14.0
Tbivalent / TOL °C 2 / 2 -10 / -10 -15 / -22
SCOP / ns (W/W) / % 5.86 / 231 4.32 / 170 4.08 / 160
Annual Consumption kWh 2738 5745 8460
Class A++ A++ A++
Medium Temperature Application (W55)
Application Climate
Warmer Average Colder
Pdesign kW 12.0 12.0 13.0
Tbivalent / TOL °C 2 / 2 -10 / -10 -15 / -22
SCOP / ns (W/W) / % 4.02 / 158 3.32 / 130 3.20 / 125
Annual Consumption kWh 3990 7466 10012
Heating ErP
Class A++ A++ A++
Condition
(Ambient/Water) A35W7 A7W35 A2W35
dB (A) Cooling: 50 Heating: 52 —
Noise Level
Power Level dB Cooling: 68 Heating: 69 —
Air Flow m3/min (ft3/min) Cooling: 93.3 (3290)
Heating: 80.0 (2830)
Refrigeration Control Device Expansion Valve
Refrigeration Oil cm3FV50S (1200)
Refrigerant (R410A) kg (oz) 2.85 (100.6)
GWP 2088
F-GAS CO2eq (ton) (Precharged / Maximum) 5.951 / 8.039
Height mm (inch) 1340 (52-3/4)
Width mm (inch) 900 (35-7/16)
Dimension
Depth mm (inch) 320 (12-19/32)
Net Weight kg (lbs) 101 (223)
Liquid mm (inch) 9.52 (3/8)
Pipe Diameter Gas mm (inch) 15.88 (5/8)
Standard Length m (ft) 7 (23.0)
Pipe Length Range m (ft) 3 (9.8) ~ 30 (98.4)
I/D & O/D Height Difference m (ft) 20 (65.6)
Additional Gas Amount g/m (oz/ft) 50 (0.5)
Refrigeration Charge Less m (ft) 10 (32.8)

Item Unit Outdoor Unit
Type Hermetic Motor
Motor Type Brushless (4-poles)
Compressor
Rated Output kW 3.00
Type Propeller Fan
Material PP
Motor Type DC (8-poles)
Input Power W —
Output Power W 60
Fan
Fan Speed rpm Cooling: 600 (Top), 640 (Bottom)
Heating: 520 (Top), 560 (Bottom)
Fin material Aluminium (Pre Coat)
Fin Type Corrugated Fin
Row × Stage × FPI 2 × 51 × 18
Heat Exchanger
Size (W × H × L) mm 903.7 × 1295.4 × 38.1
ø Single
V 230
Power Source (Phase, Voltage, Cycle)
Hz 50
Condition
(Ambient/Water) A35W7 A7W35 A2W35
Input Power
kW Cooling: 3.56 Heating: 2.53 Heating: 3.49
Maximum Input Power For Heatpump System kW 6.27
Power Supply 1 : Phase (Ø) / Max. Current (A) / Max. Input Power (W) 1Ø / 29.0 / 6.27k
Power Supply 2 : Phase (Ø) / Max. Current (A) / Max. Input Power (W) 1Ø / 26.0 / 6.00k
Power Supply 3 : Phase (Ø) / Max. Current (A) / Max. Input Power (W) — / — / —
Starting Current A 16.5
Condition
(Ambient/Water) A35W7 A7W35 A2W35
Running Current
A Cooling: 16.5 Heating: 11.7 Heating: 16.1
Maximum Current For Heatpump System A 29.0
Power Factor
Power factor means total figure of compressor and
outdoor fan motor.
% Cooling: 94 Heating: 94 Heating: 94
Number of core —
Power Cord Length m (ft) —
Thermostat Electronic Control
Protection Device Electronic Control

Item Unit Indoor Unit
Performance Test Condition EN 14511
Outdoor Ambient °C Cooling: 16 ~ 43
Heating: -28 ~ 25
Operation Range
Water Outlet °C
Cooling: 5 ~ 20
Heating: 20 ~ 55 (Below Ambient -15°C)
20 ~ 60 (Below Ambient -10°C)
Internal Pressure Differential kPa Cooling: 36
Heating: 52
Condition
(Ambient/Water) A35W7 A7W35 A2W35
dB (A) Cooling: 33 Heating: 33 —
Noise Level
Power Level dB Cooling: 46 Heating: 46 —
Height mm (inch) 892 (35-1/8)
Width mm (inch) 500 (19-11/16)
Dimension
Depth mm (inch) 340 (13-13/32)
Net Weight kg (lbs) 43 (95)
Liquid mm (inch) 9.52 (3/8)
Refrigerant Pipe Diameter Gas mm (inch) 15.88 (5/8)
Inlet mm (inch) 28 (1-3/32)
Water Pipe Diameter Outlet mm (inch) 28 (1-3/32)
Water Drain Hose Inner Diameter mm (inch) 15 (19/32)
Motor Type DC Motor
No. of Speed 7 (Software Selection)
Pump
Input Power W 92
Type Brazed Plate
No. of Plates 36
Size (W × H × L) mm 65 × 119 × 376
Hot Water Coil
Water Flow Rate l/min (m3/h) Cooling: 28.7 (1.7)
Heating: 34.4 (2.1)
Pressure Relief Valve Water Circuit kPa Open: 300, Close: 266 and below
Flow Switch Electronic Sensor
Protection Device A Residual Current Circuit Breaker (40)
Volume I 10
Expansion Vessel MWP bar 3
Capacity of Integrated Electric Heater kW 6.00
Note:
Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet
temperature of 12°C and water outlet temperature of 7°C.
Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb
(42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
Specification are subjected to change without prior notice for further improvement.
Flow rate indicated are based on nominal capacity adjustment of leaving water temperature (LWT) 35°C and T
= 5°C.

Features
Inverter Technology
- Energy saving
High Efficiency
Environment Protection
- Non-ozone depletion substances refrigerant (R410A)
Long Installation Piping
- Long piping up to 30 meter with height difference 20 meter
- Flexible 4-way piping for outdoor unit
Easy to use control panel
- Auto mode
- Holiday mode
- Dry concrete function
- Weekly timer setting
A-class energy efficiency pump
- Water pump speed can be set by selection at control panel
Improved deice cycle
Protection Feature
- Random auto restart after power failure for safety restart operation
- Gas leakage protection
- Prevent compressor reverse cycle
- Inner protector to protect compressor
Serviceability Feature
- Breakdown Self Diagnosis function
- System Status Check Buttons for servicing purpose
- System Pumpdown Button for servicing purpose
- Front maintenance design for outdoor unit

Main Components
Cabinet front plate
Cabinet front plate (2 pieces)
Remote controller
PCB
Single Phase RCCB/ELCB (Main Power)
Single Phase RCCB/ELCB (Backup Heater)
Control board cover
Control board
Flow sensor
Air purge valve
Backup heater
Overload protector (2 pieces for SXC09*3E5
or 3 pieces for SXC12*6E5)
Expansion vessel
Pressure relief valve
Water pressure gauge
Water filter
Water pump
1
3
2
4
5-1
5-2
6
7
13
14
12
10
11
8
9
15
16
1
2
3
4
6
7
8
5-2
5-1
9
10
11
12
13
14
15
16

Outdoor Unit
Air inlet (rear)
Air outlet
Air inlet (side)

Dimensions
Indoor Unit
Relative position between the indoor unit and the installation plate <Front View>
Unit: mm
340
500
58.9
141.9
100
88.3
30.6
49
129.5
250
156
980
892
326.9
476
424.5
404.1
437.3
360
180
54.6
69.5
56.1
51.5
339.3 45
<Top View>
<Front View> <Side View>
<Bottom View>
1556 from
55
200
756
16070
Indoor Unit
body
ground
Installation
plate
Installation
plate
Bolt -
size M8
WallWall More than 375 More than 375

Outdoor Unit
Unit: mm
<Top View>
<Front View> <Side View>
900
400 320 355
900
318.5 253
218
165
243
1340
615
32040
40 20
110
356.5
<Side view>
<Back view>
30

Refrigeration and Water Cycle Diagram
TINUROODNITINUROODTUO
Pipe
Temp.
Sensor
Pipe
Temp.
Sensor
Pipe
Temp.
Sensor 2
Pipe
Temp.
Sensor
Air
Temp.
Sensor
Bypass
Exit
Temp.
Sensor
Eva.
Exit
Temp.
Sensor
Defrost
Sensor
Backup Heater
Indoor
Side
Outdoor
Side
Expansion
Vessel
Pressure
Relief
Valve
Control
Panel
Water
Flow
Sensor
Water
Pump
Water
Inlet
(Connect
to
Sanitary
Tank)
Water
Outlet
(Connect
to
Sanitary
Tank)
Drain
Refrigerant Cycle (Heating)
Water Cycle
Refrigerant Cycle (Cooling)
Heat
Exchanger
Heat
Exchanger
Strainer Strainer
4-Way
Valve Gas
Side
(3-Way
Valve)
Liquid
Side
(3-Way
Valve)
2-Way
Valve
Accumulator
inout
Pressure
Switch
High
Pressure
Sensor
Compressor Discharge
Temp. Sensor
Compressor
Water
Pressure
Gauge
Capillary
Tube
Strainer
Strainer
Subcooler
Expansion
Valve
(Bypass)
Muffler
Expansion
Valve
Model Piping size Rated Length (m)
Gas Liquid
For Heat
Pump Indoor
Unit
For
Hydromodule
+ Tank
Max
Elevation
(m)
Min. Piping
Length
(m)
Max. Piping
Length
(m)
Additional
Refrigerant
(g/m)
UX09*E5*, UX12*E5*,
UD12*E5*,
UD16*E5*, UX09*E8*,
UX12*E8*,
UX16*E8*, UD09*E8*,
UD12*E8*,
UD16*E8*
Ø15.88 mm
(5/8")
Ø9.52 mm
(3/8") 7 5 20 3 30 50
Example:
If piping length is 30m, the quantity of additional refrigerant should be 1000g. [(30-10)m x 50 g/m = 1000g]
GWP (R410A) = 2088

WH-SXC12H6E8
3-WAY VALVE
NOPENCLOSECLOSE OPEN N
2-WAY VALVE
EXTERNAL CONTROL 1
BL BL
CONTROL PANEL
OUTDOOR AIR SENSOR TANK SENSOR
HEAT COOL LN
ROOM THERMO 1
RY-V2
BL
AC1-L3
(BLK)
W
AC1-N (WHT)
G
G01
(GRN)
R
DATA
(RED)
G
G02
(GRN)
POWER SUPPLY 1
(L) BL
1
Single phase AC230V 50Hz
W
GROUNDING
3
(N)
In=30mA
2
RCCB/ELCB
230V 30A
~40A
RECTIFICATION CIRCUIT
COMMUNICATION CIRCUIT
RECTIFICATION CIRCUIT
NOISE FILTER CIRCUIT
WATER PUMP CIRCUIT
W
BL
R
BR
B
1 4 5 6 7
1 23
4 7 1 2
3 4 7
W
BL
R
BR
B
M
CN-PUMP1 (WHT)
B
80 3 C
OLP
CN-TH1
4 3 2
WATER OUTLET TEMP. SENSOR(THERMISTOR) REFRIGERANT TEMP. SENSOR(THERMISTOR) WATER INLET TEMP. SENSOR(THERMISTOR)
t
ﾟ
t
ﾟ
t
ﾟ
WATER
PUMP
ELECTRONIC CONTROLLER (MAIN)
FUSE 1
T6.3A L250V
B
GROUNDING
1 2
CN-TH3
t
ﾟ
HEX WATER OUTLET TEMP. SENSOR (THERMISTOR)
CN-OLP1
1 4 1 2 3 4 3 2 1 2 3 4
2
TO OUTDOOOR UNIT
TERMINAL BOARD
CN-FLWSEN
1 1 2 3 4 5 6
FLOW SENSOR
BL
W
BR
B
BOILER CONTACT EXTRA PUMP BOOSTER HEATER
SIGNAL DETECTION CIRCUIT
RY-V3
ROOM TEMP. ZONE 1 OLP BOOSTER HEATER
CN1 CN2
CN3 CN4 CN5 CN6
RY-CONTACT1
SSR1
SW1 SW2
NOISE FILTER CIRCUIT
(BL)
(W)
(R)
NOISE FILTER CIRCUIT
FUSE 3
T3.15A L250V
G03
(GRN)
G
REACTOR
L1
(WHT)
WW
L2
(WHT)
12 12
WW
WATER
PIPING
BASE
PAN
G
WATER
PIPING
G
CONNECTING
BAR
SSR205
SSR207
SSR206
WATER PUMP ZONE 1 WATER PUMP ZONE 2
OPTIONAL
BL
R B
W W
W
W W
CN-PWR3 Green CN-PWR2 Blue CN-PWR4 Black CN-CNT CN-PWR (BLK)
CN203
CN202
CN-COMM
(YLW)
CN-PWR202
(YLW)
ACL (BLK)
ACN (WHT)
CN-PWR204
(YLW)
DCP
(RED)
DCN
(BLU)
ELECTRONIC CONTROLLER (SUB)
CN201
CN209 CN208
CN210CN206CN207
CN204
CN205
CN-CNT
(WHITE)
5 1
SSR204
1 2 3 4 5
2 4 1 3 2 1 1
1 2 1 3 3 1 2 1
SIGNAL DETECTION CIRCUIT
SIGNAL DETECTION CIRCUIT
SSR201
SSR200 SSR203
SSR202
RY1
SOLAR WATER PUMP
POOL WATER PUMP
ERROR SIGNAL
BIT1BIT2VCC
MIXING
VALVE 1
NOPENCLOSE CLOSEOPENN
MIXING
VALVE 2
HEATCOOLLN
ROOM THERMO 1ROOM THERMO 2
NL COOL HEAT
C121
1µ
50V
C83
0.1µ
16V
C89
1µ
16V
C98
1µ
16V
G2G2
R136
1k
R141
6.49k
1%
12V
G2
5V
12V
5V
C92
0.1µ
16V
R130
10k
5V
C91
220µ
10V
C88
1µ
16V
R140
20k
1%
R139
20k
1%
R128
20k
1%
R135
20k
1%
G2
G2
G2
C90
1µ
16V
C84
1µ
16V
C81
1µ
16V
C73
1µ
16V
C79
1µ
16V
C93
100p
50V
ZD2
20V
PC1
A
1 2
4 3
K
LF3
R1
10k
R24
10k
R97
10k
5V
C E
R89
10k
5V_2
20V
G6
SG SIGNAL
DEMAND
SIGNAL
DC 10V
DC GND
WATER TEMP.
ZONE 1
HEAT/COOL
SWITCH
EXTERNAL
COMP. SW
SOLAR TEMP.
SENSOR
WATER TEMP.
ZONE 2
POOL TEMP.
SENSOR
BUFFER TANK
SENSOR
ROOM TEMP.
ZONE 2
ROOM TEMP.
ZONE 1
R81
10k
R86
10k
C63
1000p
50V
C61
1000p
50V
5V
W W W W
*C57
1
W
(N
1
)
(L
1
)
R
Single phase AC230V 50Hz
POWER SUPPLY 2
BL
TERMINAL BOARD
GROUNDING
BL
RCCB/ELCB
80 3 C
OLP
BL
AC2-N2
(WHT)
SIGNAL DETECTION CIRCUIT
RY-BOOSTER
BACKUP HEATER(6kW)
BL
ACL3
(BLK)
2
1 2 33
AC2-L3
(BLK)
RY-HT(L3)
HT1-L3
(RED)
R
BL
W
HT1-L2
(ORG)
AC2-L2
(YLW)
RY-HT(L2)
W
OLP
80 3 C
AB
O
Y
O
W
22 11
O
In=30mA
230V 30A~40A
C123
1µ
50V

50
9.2 Outdoor Unit
3
CN-V1
MAGNETIC COIL (4-WAY VALVE)
3
BL
3 1
W
AC-BLK02
BL
W
ELECTRONIC CONTROLLER (MAIN)
BASE PAN HEATER
Y/G
3
FUSE2
CRANKCASE
(YELLOW)
(BLACK)
T3.15A L250V
G
UPPER FAN MOTOR
3
COM3 (RED)
R
1
AC-WHT02
1
(WHITE)
RY-HT2
CN-HT2
RY-HT1
CN-HOT CN-HT1
RED
1
CN-HPS
G
CN-FM2 (WHITE) CN-FM1
LOWER FAN MOTO
R
(BLACK)
(RED)
(2-WAY VALVE)
M M
1
CN-ACL
RY-V1
AC-BLK01
(OPTIONAL)
4
W
W
RELAY
6
W
RY-HOT
FG2 (GREEN)
BL
ELECTRONIC CONTROLLER (SUB)
CN-ACN (BLACK)
FG1 (GREEN)
(WHITE)
(BLACK)
AC-BLK CN-BLK
(BLACK)
(WHITE) (BLUE)
CN-WHT
MAGNETIC COIL
2
1
(WHITE)
HEATER
ELECTRO
(BLACK)
CN-WHT
(WHITE)
ELECTRO
5
NOISE FILTER
(GRAY)
CAPACITOR
1
NOISE
HIGH PRESSURE SENSOR
2
OUTDOOR PIPE TEMP. SENSOR (THERMISTOR)
DEFROST TEMP. SENSOR (THERMISTOR)
OUTDOOR AIR TEMP. SENSOR (THERMISTOR)
3 1
COMPRESSOR
W (YELLOW)
GR
T3.15A L250V
AC-L
COMMUNICATION
CIRCUIT
1
BL
RECTIFICATION
FILTER
W
(RED) DCP
2
CN-RY1
SWITCHING POWER
SUPPLY CIRCUIT
RECTIFICATION
CIRCUIT
PFC
CIRCUIT
DCN-IN
CIRCUIT
AC-C
(BLUE)
DCN
(BLACK)
DCN2
(BLACK)
FUSE1
1
4
7
7
4
V
UU(RED)
P
N
V(BLUE)
TO
INDOOR
UNIT
(BLUE)
(BLACK)
3~
FG1
(GREEN)G
MS
R
DCP-IN
(WHITE)
BL
(CAPACITOR) ELECTRONIC CONTROLLER
AC-C
(BLACK)
B
REACTOR
GR
A
BLBL
DCN-OUT
CIRCUIT
W
R
B
BR
Y
CIRCUIT
CIRCUIT
R
TERMINAL
BOARD
TERMINAL
BOARD
2
1
CN-DIS
C47
1µ
6.3V
R102
4.99k
1%
t°
5V
ELECTRO
MAGNETICCOIL
(BYPASSEXPANSION
VALVE)
123456
M
IC1 6 IC1 6 IC1 6 IC1 6 IC1 6 IC1 6 IC1 6 IC1 5
IC15 IC15 IC15 IC15 IC15 IC15
13V
GND
1 2 3 4 5 6 7
8
916
15 14 13 12 11 10
13V
13V
VCC
GND
1 2 3 4 5 6 7
8
916
15 14 13 12 11 10
VCC
VCC
G2
*C203
*D65
*D64
*D63
*D62
ELECTRO
MAGNETICCOIL
(MAINEXPANSION
VALVE)
123456
M
13V
GND
1 2 3 4 5 6 7
8
916
15 14 13 12 11 10
13V
VCC
D33
D34
D35
D36
GND
1 2 3 4 5 6 7
8
916
15 14 13 12 11 10
VCC
VCC
IC7
IC8 IC8 IC8 IC8 IC8 IC8 IC8
IC7 IC7 IC7 IC7 IC7 IC7
G2
13V
CN-TH1
12
*C49
t°
*R104
*C48
*R103
5V
*CN-TH2*CN-EV*CN-EV2
t°t°
5V
R100
15.0k
1%
R101
7.50k
1%
C46
1µ
6.3V
C45
1µ
6.3V
1234
R183
4.7k
Q11
e
c
b
13V
1
R
R
2
blue
CN-PSW1
HIGHPRESSURESWITCH
R138
5.6k
13V
BYPASSEXIT
TEMP.SENSOR
(THERMISTOR)
EVAEXIT
TEMP.SENSOR
(THERMISTOR)
t°t°
*R386 *C215*C214
5V
*CN-TH3
*R385
1234
1 2 3 4
R358
20k
R356
1k
C167
1000p
50V
C220
1µ
16V
5V
*C169

Installation Instruction
Indoor Unit
Select the Best Location
There should not be any heat source or steam
near the unit.
A place where air circulation in the room is good.
A place where drainage can be easily done.
A place where noise prevention is taken into
consideration.
Do not install the unit near the door way.
Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
Recommended installation height for indoor unit
shall be at least 800 mm.
Must install on a vertical wall.
When install electrical equipment at wooden
building of metal lath or wire lath, according to
electrical facility technical standard, no electrical
contact between equipment and building is
allowed. Insulator must be installed in between.
Do not install the unit at outdoor. This is designed
for indoor installation only.
100 mm
or more
100 mm
or more
100 mm
or more
Required space for installation
How To Fix Installation Plate
The mounting wall is strong and solid enough to
prevent it from vibration.
(Unit in mm)
55
200
756
16070
Indoor Unit
body
1556 from
ground
Installation
plate 1
Installation
plate 4
Bolt -
size M8
WallWall More than 375 More than 375
The centre of installation plate should be at more than
375 mm at right and left of the wall.
The distance from installation plate edge to ground
should more than 1556 mm.
Always mount the installation plate horizontally
plate by aligning the marking thread and using a
level gauge.
Mount the installation plate on the wall with 6 sets
of plug, bolt and washer (all non-supply) with size
M8.
To Drill A Hole In The Wall And
Install A Sleeve Of Piping
1. Insert the piping sleeve to the hole.
2. Fix the bushing to the sleeve.
3. Cut the sleeve until it extrudes about 15 mm
from the wall.
CAUTION
When the wall is hollow, please be sure to use the sleeve
for tube assembly to prevent dangers caused by mice
biting the connection cable.
4. Finish by sealing the sleeve with putty or
caulking compound at the final stage.
15 mm
Putty or caulking compound
ø70 mm through hole
Indoor Outdoor
Sleeve for tube
assembly
Approx. 5 - 7 mm
Bushing for tube assembly
Wall
Indoor Unit Installation
Access to Internal Components
WARNING
This section is for authorized and licensed electrician/water
system installer only. Work behind the front plate secured by
screws must only be carried out under supervision of qualified
contractor, installation engineer or service person.
Please follow the steps below for take out front plate.
Before removing the front plate of indoor unit, always
switch off all power supply (i.e. indoor unit power
supply, heater power supply and Tank Unit power
supply).
1. Remove the 2 mounting screws which located at
bottom of the front plate.

2. Gently pull the lower section of the front plate
towards you to remove the front plate from left and
right hooks.
3. Hold the left edge and right edge of front plate to
lift up front plate from hooks.
Hook
Lift up
Screws
Install the indoor unit
1. Engage the slots on the indoor unit to the hooks of
installation plate
1
. Ensure the hooks are properly
seated on the installation plate by moving it left
and right.
2. Fix the screws
5
to the holes on the hooks of
installation plate
4
, as illustrated below.
Installation plate
Indoor unit back
Slots
Wall
Hooks
Installation plate
Screws
Note: Do not lift the
Indoor Unit by holding the
refrigerant and water pipes
to prevent damage of the
pipes.
1
4
5
Water Piping Installation
The minimum requirement of water in the system
is 50 litres. If this value could not be achieved,
please install additional buffer tank (field supply).
Water inlet and water outlet in indoor unit are used
for connection to water circuit. Please request a
licensed technician to install this water circuit.
This water circuit must comply with all relevant
European and national regulations, i.e. IEC/EN
61770.
Be careful not to deform the piping to excessive
force when doing piping connection job.
Use Rp 1 ¼" nut for both water inlet and outlet
connection and clean all pipings with tap water
before connecting to the indoor unit.
Cover the pipe end to prevent dirt and dust when
inserting it through a wall.
Choose proper sealer which can withstand the
pressures and temperatures of the system.
If an existing tank is to be connected to this indoor
unit, ensure the pipes are clean before water pipe
installation is carried out.
Be sure to use two spanners to tighten the
connection. Tighten the nuts with torque wrench:
117.6N•m.
To r q u e w r e n c h
Indoor unit
Spanner
If non-brass metallic piping is used for installation,
make sure to insulate the pipes to prevent
galvanic corrosion.
Make sure to insulate the water circuit pipes to
prevent reduction of heating capacity.
After installation, check the water leakage
condition in connection area during test run.
Water Inlet
Water Outlet
CAUTION
Do not over tighten, over tightening cause water leakage.
Refrigerant Pipe Installation
1 Please make flare after inserting flare nut (located
at joint portion of tube assembly) onto the copper
pipe. (In case of using long piping)
2 Do not use pipe wrench to open refrigerant piping.
Flare nut may be broken and cause leakage. Use
proper spanner or ring wrench.
3 Connect the piping:
Align the center of piping and sufficiently
tighten the flare nut with fingers.
Be sure to use two spanners to tighten the
connection.
Further tighten the flare nut with torque
wrench in specified torque as stated in the
table.

Torque wrench
Spanner or
Wrench
Piping size (Torque)
Gas Liquid
ø15.88 mm (5/8”) [65 N•m] Ø9.52 mm (3/8”) [42 N•m]
Liquid Refrigerant Pipe Gas Refrigerant Pipe
CAUTION
Do not over tighten, over tightening cause water leakage.
CAUTION
Please take extra precaution when open the control board cover
6
and control board
7
for indoor unit installation and servicing.
Failure to do so may cause injury.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove
the burrs.
2. Remove the burrs by using reamer. If burrs is
not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal
powder entering the pipe.
3. Please make flare after inserting the flare nut
onto the copper pipes.
When properly flared, the internal surface
of the flare will evenly shine and be of even
thickness. Since the flare part comes into
contact with the connections, carefully check
the flare finish.
 Improper flaring 
Inclined Surface
damaged
CrackedUneven
thickness
1. To cut 2. To remove burrs 3. To flare
Bar
Red arrow mark
Handle
Core
Yoke
Clamp handle
Bar 0 – 0.5 mm
Copper
pipe
Reamer
Point down
Pipe
Drain Elbow and Hose
Installation
Fix the drain elbow
2
and packing
3
to the bottom
of indoor unit, as shown in below illustration.
Use inner diameter 17 mm drain hose in the
market.
This hose must to be installed in a continuously
downward direction and in a frost-free
environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage or drain pipe
that may generate ammonia gas, sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Packing
Drain Elbow
3
2
Pressure Relief Valve Drainage
Pipework
Connect a drain hose to the pressure relief valve
hose outlet.
This hose must to be installed in a continuously
downward direction and in a frost-free
environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage hose or
cleaning hose that may generate ammonia gas,
sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
Pressure relief valve
hose outlet
Connect The Cable To The Indoor
Unit
WARNING
This section is for authorised and licensed electrician only. Work
behind the Control Board Cover
6
secured by screws must
only be carried out under supervision of qualified contractor,
installation engineer or service person.
Open the Control Board Cover
6
Please follow the steps below to open control board
cover. Before opening the control board cover of
indoor unit, always switch off all power supply (i.e.
indoor unit power supply, heater power supply and
Tank Unit power supply).
1. Remove the 6 mounting screws at the control
board cover.
2. Swing the control board cover to the right hand
side.

Screws
Screws
Fixing of Power Supply Cord
and Connecting Cable
1. Connecting cable between Indoor Unit and
Outdoor Unit shall be approved polychloroprene
sheathed 4 × min 4.0 mm2flexible cord, type
designation 60245 IEC 57 or heavier cord.
Ensure the colour of wires of Outdoor Unit and
the terminal no. are the same to the Indoor
Unit respectively.
Earth wire shall be longer than other wires as
shown in the figure for the electrical safety in
case of the slipping out of the cord from the
Holder (Clamper).
2. An isolating device must be connected to the
power supply cable.
Isolating device (disconnecting means) should
have minimum 3.0 mm contact gap.
Connect the approved polychloroprene
sheathed power supply 1 cord and power
supply 2 cord and type designation 60245 IEC
57 or heavier cord to the terminal board, and
to the other end of the cord to isolating device
(Disconnecting means). See below table for
cable size requirement.
Power Supply
Cord Cable Size Isolating Devices
Recommended
RCD
1 3 × min 4.0
mm230A 30mA, 2P, type A
2 3 × min 4.0
mm230A 30mA, 2P, type A
3. To avoid the cable and cord being damaged by
sharp edges, the cable and cord must be passed
through a bushing (located at the bottom of
Control Board) before terminal board. The bushing
must be used and must not be removed.
Terminals on the Outdoor Unit 123
123
Colour of wires (Connecting cables)
Terminals on the Indoor Unit LN
N
L
1
N
1
(Power Supply Cord)
Terminals on the isolating
devices from power supply
(Disconnecting means)
L L
1
N
1
Indoor Unit/
Outdoor Unit
connection
Power Supply 1 Power Supply 2
Power Supply Cord
Holder
(Clamper)
Terminal Board
RCCB/ELCB
*1 *1
Connecting Cable
Terminal screw Tightening torque cN•m {kgf•cm}
M4 157~196 {16~20}
M5 196~245 {20~25}
*1 - Earth wire must be longer than other cables for safety reasons
Wire Stripping and Connecting
Requirement
Wire stripping
5mm or
more
(gap between
wires)
No loose strand
when insert
Indoor/outdoor
connecting
terminal board
10 ± 1mm
ACCEPT PROHIBITED
Conductor
over insert
Conductor not
fully insert
Conductor
fully insert
PROHIBITED

Connecting Requirement
For SXC09*3E5/SXC12*6E5
The equipment's power supply 1 complies with
IEC/EN 61000-3-12 provided that the short circuit
power SSC is greater than or equal to 1700kW at
the interface point between the user's supply and
the public system. It is the responsible 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 a short short circuit power SSC
greater than or equal to 1700kW.
The equipment's power supply 1 complies with
IEC/EN 61000-3-11 and shall be connected to a
suitable supply net work, having service current
capacity 100A per phase. Please liaise with
supply authority that the service current capacity
at the interface point is sufficient for the
installation of the equipment.
The equipment's power supply 2 complies with
IEC/EN 61000-3-12.
The equipment's power supply 2 complies with
IEC/EN 61000-3-11 and shall be connected to
suitable supply network, with the following
maximum permissible system impedance Zmax =
0.271at the interface. Please liaise with supply
authority to ensure that the power supply 2 is
connected only to a supply of that impedance or
less.
Installation Of Remote Controller
As Room Thermostat
Remote Controller
3
mounted to the Indoor Unit
can be moved to the room and serve as Room
Thermostat.
Installation Location
Install at the height of 1 to 1.5 m from the floor
(Location where average room temperature can
be detected).
Install vertically against the wall.
Avoid the following locations for installation.
1. By the window, etc. exposed to direct sunlight
or direct air.
2. In the shadow or backside of objects deviated
from the room airflow.
3. Location where condensation occurs (The
Remote Controller is not moisture proof or
drip proof.)
4. Location near heat source.
5. Uneven surface.
Keep distance of 1 m or more from the TV, radio
and PC. (Cause of fuzzy image or noise)
Remote Controller Wiring
1
2
Terminal for Remote Controller wiring
Remote Controller
Indoor unit
Remote Controller wiring
(field supply)
•
No polarity
Remote Controller cable shall be (2 × min 0.3
mm2), of double insulation PVC-sheathed or
rubber sheathed cable. Total cable length shall be
50 m or less.
Be careful not to connect cables to other terminals
of Indoor Unit (e.g. power source wiring terminal).
Malfunction may occur.
Do not bundle together with the power source
wiring or store in the same metal tube. Operation
error may occur.
Remove The Remote Controller
From Indoor Unit
1. Remove the top case from the bottom case.
Bottom
case
Flat-blade
screwdriver
Insert the
driver and
slightly turn.
2. Remove the wiring between Remote controller
and Indoor Unit terminal. Remove the bottom case
from the Control board cover by loosening the
screws. (3 pieces)
Disconnect the
Remote controller
wiring
Claw
(2 places)

60
11.1.6.4 Mounting The Remote
Controller
For exposed type
Preparation: Make 2 holes for screws using a driver.
UP
Cut here with
a nipper and
remove the burr
with a file.
Mount the top case.
•
Align the claws of the top
case and then align the claws
of the bottom case.
Hole for screw
Screw
(field supply)
Claw (2 places)
Pass through
the hole
Bottom case
(Back side)
Top case
(Back side)
Remote controller terminal board
Remove the coating. Approx. 6 mm
Remove the sheath. Approx. 180 mm.
Make sure the wiring connection is in the
correct direction.
Clamper
(field supply)
Claw (2 places)
Wall to which
the remote
controller is
fixed
Mount the bottom case to
the wall.
Connect the remote control
wiring
•
Arrange the wires along the groove
of the case.
For embedded type
Preparation: Make 2 holes for screws using a driver.
UP
Avoid the wire
being caught.
Mount the top case.
•
Align the claws of the top
case and then align the claws
of the bottom case.
Hole for
screw
Screw
(field supply)
Claw (2 places)
Bottom case
(Back side)
Top case
(Back side)
Remote controller
terminal board
Remove the coating.
Approx. 6 mm
Make sure the wiring
connection is in the correct
direction.
Claw (2 places)
Mount the bottom case
to the wall.
•
Pass the wire through the hole
in the centre of the bottom case.
Connect the remote
control wiring
11.1.6.5 Replace The Remote Controller
Cover
Replace the existing Remote controller cover with
Remote controller cover
6
to close the hole left
after remove the Remote controller.
1. Release the Remote controller cover’s hooks from
behind the front plate.
Front plate
Hook (6 places)
Existing Remote
controller cover
2. Press from front to fix the Remote controller cover
6
on the front plate.
Front plate
Hook (6 places)
Remote
controller
cover 6
11.1.7 Charging The Water
Make sure all the piping installations are properly
done before carry out below steps.
1. Turn the plug on the Air Purge Valve
9
outlet
anticlockwise by one complete turn from fully
closed position.
A
ir purge valve
Plug (turn
anticlockwise by
one complete turn)
9

2. Set the Pressure Relief Valve
13
level “DOWN”.
Pressure relief
valve
Lever
Turn up
Pressure relief valve
13
13
3. Start filling water (with pressure more than 0.1
MPa (1 bar)) to the Indoor Unit via water inlet.
Stop filling water if the free water flow through
Pressure Relief Valve drain hose.
4. Turn ON the power supply and make sure Water
Pump
16
is running.
5. Check and make sure no water leaking at the tube
connecting points.

How To Fix Cable
Connecting with external
device (optional)
All connections shall follow to the local national
wiring standard.
It is strongly recommended to use manufacturer-
recommended parts and accessories for
installation.
For connection to main PCB
4
.
1. Two-way valve shall be spring and electronic type,
refer to “Field Supply Accessories” table for details.
Valve cable shall be (3 × min 1.5 mm2), of type
designation 60245 IEC 57 or heavier, or similarly
double insulation sheathed cable.
* note: - Two-way Valve shall be CE marking
compliance component.
- Maximum load for the valve is 9.8VA.
2. Three-way valve shall be spring and electronic
type. Valve cable shall be (3 × min 1.5 mm2), of
type designation 60245 IEC 57 or heavier, or
similarly double insulation sheathed cable.
* note: - Shall be CE marking compliance
component.
- It shall be directed to heating mode when
it is OFF.
- Maximum load for the valve is 9.8VA.
3. Room thermostat cable must be (4 or 3 × min 0.5
mm2), of type designation 60245 IEC 57 or
heavier cord, or similarly double insulation
sheathed cable.
4. Maximum output power of booster heater shall be
3 kW. Booster heater cable must be (3 × min 1.5
mm2), of type designation 60245 IEC 57 or
heavier.
5. Extra pump cable shall be (2 × min 1.5 mm2), of
type designation 60245 IEC 57 or heavier.
6. Boiler contact cable shall be (2 × min 0.5 mm2), of
type designation 60245 IEC 57 or heavier.
7. External control shall be connected to 1-pole
switch with min 3.0 mm contact gap. Its cable
must be (2 × min 0.5 mm2), double insulation layer
of PVC-sheathed or rubber-sheathed cable.
* note: - Switch used shall be CE compliance
component.
- Maximum operating current shall be less
than 3Arms.
8. Tank sensor shall be resistance type, please refer
to Graph 7.1 for the characteristic and details of
sensor. Its cable shall be (2 × min 0.3 mm2),
double insulation layer (with insulation strength of
min 30V) of PVC-sheathed or rubber-sheathed
cable.
-30 -20 -10 0 10 20 30
16000
14000
12000
10000
8000
˚C
6000
4000
2000
0
Tank sensor characteristic
Tank Sensor Resistant Vs Temperature
Resistance ()
9. Room sensor zone 1 cable shall be (2 × min 0.3
mm2) double insulation layer of PVC-sheathed or
rubber-sheathed.
10. Outdoor air sensor cable shall be (2 × min 0.3
mm2) double insulation layer of PVC-sheathed or
rubber-sheathed.
11. Tank OLP cable must be (2 × min 0.5 mm2),
double insulation layer of PVC-sheathed or
rubber-sheathed cable.
Bind optional
cables with
these bands
Power Supply 1
RCCB/ELCB
Power Supply 2
RCCB/ELCB
Holder (Clamper)
Indoor
terminal for
connecting
cables
Bind optional
cables with
these bands
Main PCB 4
How to guide the optional cables and power supply cord
(view without internal wiring)
Optional cables:
•
External control
cable
•
Tank sensor cable
•
Room sensor
zone 1
•
Outdoor air sensor
cable
•
Tank OLP cable
•
Remote controller
cable
Optional cables:
•
3-way valve
cable
•
2-way valve cable
•
Room thermostat zone
1 cable
•
Booster heater cable
•
Extra pump cable
•
Boiler contact cable
•
Power Supply 1 cord
•
Power Supply 2 cord
•
Indoor Unit/Outdoor Unit Connecting cable