Panasonic WH-MHF12G6E5 User manual

There are
s
Diagrams,
C
with manu
f
manufactu
r
This service
It does not c
Products po
w
service or r
e
In or
d
s
pecial compo
n
C
ircuit Board D
i
f
acturer’s speci
f
r
er.
information is
ontain warnin
g
w
ered by elec
t
e
pair the produ
c
d
er to avoid fro
n
entsusedint
h
i
agrams, Explo
d
f
ied parts to p
r
designed for
e
g
s or cautions
t
t
ricity should b
e
c
t or products
d
stbite, be ass
u
IMPOR
T
h
is equipment
w
d
ed Views and
R
r
event shock, f
e
xperienced re
p
t
o advise non-
t
e
serviced or r
e
d
ealt with in th
PRECAUT
red of no refri
g
T
A
NT S
A
F
E
w
hich are impo
R
eplacement P
ire or other ha
WARNI
N
p
air technician
s
t
echnical indivi
d
e
paired only b
y
is service info
r
T
ION OF LOW
g
erant leakage
E
T
Y
NOTI
C
rtant for safety
.
arts List. It is e
s
zards. Do not
N
G
s
only and is n
d
uals of poten
t
y
experienced
r
mation by any
o
TEMPERATU
during the ins
t
C
E
.
These parts
a
s
sential that the
modify the ori
g
o
t designed fo
r
t
ial dangers in
p
rofessional t
e
o
ne else could
R
E
t
allation or rep
a
© Panas
o
Order N
o
Mon
o
WH-
M
WH-
M
D
a
re marked by
se critical parts
g
inal design wi
t
r use by the g
e
attempting to
s
e
chnicians. An
y
d
result in serio
airing of refrig
e
o
nic Corporatio
n
o
. PAPAMY15
0
o
Bloc
U
M
HF09
G
M
HF12
G
D
estina
Eu
r
Tu
r
in the Sche
m
should be repl
a
t
hout permissi
o
!
e
neral public.
s
ervice a prod
u
y
attempt to
us injury or de
a
e
rant circuit.
n
2015.
0
6105CE
U
nit
G
3E5
G
6E5
tion
r
ope
r
key
m
atic
a
ced
o
nof
u
ct.
a
th.

3
1. Safety Precautions
Read the following “SAFETY PRECAUTIONS” carefully before installation of (Mono bloc) Air-to-Water Heatpump
system (hereafter referred to as “Mono bloc unit”).
Electrical works and water installation works must be done by licensed electrician and licensed water system
installer respectively. Be sure to use the correct rating and main circuit for the model to be installed.
The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation due to ignorance or negligence of the
instructions will cause harm or damage, and the seriousness is classified by the following indications.
WARNING This indication shows the possibility of causing death or serious injury.
CAUTION This indication shows the possibility of causing injury or damage to properties only.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITED from doing.
Symbol with dark background denotes item that must be carried out.
Carry out test run to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and
maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.
If there is any doubt about the installation procedure or operation, always contact the authorized dealer for advice and
information.
WARNING
1. Do not install Mono bloc unit near handrail of veranda. When installing Mono bloc unit at veranda of high rise building, child may climb
up to Mono bloc unit and cross over the handrail and causing accident.
2.
Do not use unspecified cord, modified cord, join cord or extension cord for power supply cord. Do not share the single outlet with other
electrical appliances.
Poor contact, poor insulation or over current will cause electrical shock or fire.
3. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
4. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
5. Do not sit or step on the unit, you may fall down accidentally.
6. Keep plastic bag (packaging material) away from small children, it may cause suffocation.
7. Do not use pipe wrench to install refrigerant pipe. It might deform the piping and cause the unit to malfunction.
8. Do not purchase unauthorized electrical parts for installation, service, maintenance and etc.. They might cause electrical shock or fire.
9. This unit is a multi supply appliances. All circuits must be disconnected before accessing to the unit terminals.
10. Do not modify the wiring of Mono bloc unit for installation of other components (i.e. heater, etc.). Overloaded wiring or wire connection
points may cause electrical shock or fire.
11. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
12.
For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and
single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or
fire.
13. For water circuit installation work, follow to relevant European and national regulations (including EN61770) and local plumbing and
building regulation codes.
14. Must engage an authorized dealer or specialist for installation. If installation is defective, it will cause water leakage, electrical shock or
fire.
15. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
16. Only use the supplied or specified installation parts. Else, it may causes Mono bloc unit vibrate, fall, water leakage, electrical shock or
fire.
17. Install at a flat, strong and firm location which is able to withstand the Mono bloc unit’s weight. If the location is slanting, or strength is
not enough the set will fall and cause injury.

4
WARNING
18. This equipment is strongly recommended to be installed with Residual Current Device (RCD) on-site according to the respective
national wiring rules or country-specific safety measures in terms of residual current.
19. The unit is only for use in a closed water system. Utilization in an open water system may lead to excessive corrosion of the water
piping and risk of incubating bacteria colonies, particularly Legionella, in water.
20. If there is any doubt about the installation procedure or operation, always contact the authorized dealer for advice and information.
21. Select a location where in case of water leakage, the leakage will not cause damage to other properties.
22. When installing electrical equipment at wooden building of metal lath or wire lath, in accordance with electrical facility standard, no
electrical contact between equipment and building is allowed. Insulator must be installed in between.
23. This installation may be subjected to building regulation approval applicable to respective country that may require to notify the local
authority before installation.
24. Any work carried out on the Mono bloc unit after removing the front panel which is secured by screws, must be carried out under the
supervision of authorized dealer and licensed installation contractor.
25.
This unit must be properly earthed, the electrical earth must not be connected to a gas pipe, water pipe, the earth of a lightning rod or
a telephone. Otherwise there is a danger of electrical shock in the event of an insulation breakdown or electrical earth fault in the
Mono bloc unit.
CAUTION
1. Do not install the Mono bloc unit in areas where there is a risk of flammable gas leakage. There is a risk of fire if flammable gas
accumulates near or around the Mono bloc unit.
2. Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigeration parts. Take care of the
liquid refrigerant, it may cause frostbite.
3. Make sure the power supply cord does not contact with hot part (i.e. water piping). High temperature may cause insulator of power
supply cord damage hence electrical shock or fire.
4.
Do not touch the sharp aluminum fins or edges of metal parts.
If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.
5. Do not apply excessive force to water pipes that may damage the pipes. If water leakage occurs, it will cause flooding and damage to
other properties.
6. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water leakage may happen and may
cause damage to properties of the user.
7. The piping installation work must be flushed before the Mono bloc unit is connected to remove contaminants. Contaminants may
damage the Mono bloc unit components.
8. Select an installation location where it is accessible for maintenance.
9.
Power supply connection to the Mono bloc unit.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
Must follow local national wiring standard, regulation and this installation instruction.
Strongly recommended to make permanent connection to a circuit breaker. It must be a double pole switch with a minimum
3.0 mm gap.
- Power supply 1: Use approved 40A circuit breaker
- Power supply 2: Use approved 40A circuit breaker
10. Ensure the correct polarity is maintained throughout all wiring. Otherwise, it will cause electrical shock or fire.
11. After installation, the installer is obliged to verify correct operation of the Mono bloc unit. Check the connection point for water leakage
during test run. If leakage occurs, it will cause damage to other properties.
12.
Installation work.
Four or more people are required to carry out the installation work. The weight of Mono bloc unit might cause injury if carried by less
than four people.

7
2.2 WH-MHF12G6E5
Item Unit Refrigerant System
Performance Test Condition EN14511
Heating Capacity
Condition
(Ambient/Water) A7W35 A2W35
kW 12.00 12.00
BTU/h 41000 41000
kcal/h 10320 10320
COP W/W 4.46 3.26
kcal/hW 3.84 2.80
Air Flow m3/min (ft3/min) 80.0 (2830)
Refrigeration Control Device Expansion Valve
Refrigeration Oil cm3FV50S (1600)
Refrigerant (R407C) g (oz) 1.92k (67.8)
Compressor
Type Hermetic Motor / Rotary
Motor Type Brushless (4-poles)
Rated Output kW 3.40
Fan
Type Propeller Fan
Material PP
Motor Type DC (8-poles)
Input Power W —
Output Power W 60
Fan Speed rpm 510 (Top Fan) 550 (Bottom Fan)
Heat Exchanger
Fin material Aluminium (Pre Coat)
Fin Type Corrugated Fin
Row × Stage × FPI 2 × 51 × 18
Size (W × H × L) mm 903.7 × 1295.4 × 38.1
Item Unit Mono Bloc Unit
Dimension
Height mm (inch) 1410 (55-1/2)
Width mm (inch) 1283 (50-1/2)
Depth mm (inch) 320 (12-19/32)
Net Weight kg (lbs) 151 (333)
Noise Level dB-A 50
Power Level dB 67
Power Source (Phase, Voltage, Cycle)
ø Single
V 230
Hz 50
Input Power kW 2.69 3.68
Maximum Input Power For Mono Bloc Unit kW 6.20
Power Supply 1: Phase (ø) / Max. Current (A) / Max. Input Power (W) Single / 29.0 / 6.20k
Power Supply 2: Phase (ø) / Max. Current (A) / Max. Input Power (W) Single / 26.0 / 6.00k
Power Supply 3: Phase (ø) / Max. Current (A) / Max. Input Power (W) - / - / -
Starting Current A 12.8
Running Current A 12.8 17.2
Maximum Current For Mono Bloc Unit A 29.0
Power Factor % 93 93

8
Item Unit Mono Bloc Unit
Power factor means total figure of compressor and outdoor fan motor.
Power Cord Number of core -
Length m (ft) -
Thermostat Electronic Control
Protection Device Electronic Control
Item Unit Water System
Performance Test Condition EN14511
Operation Range Outdoor Ambient °C -20 ~ 35
Water Outlet °C 25 ~ 65
Internal Pressure Differential kPa 44.7
Water Pipe Diameter Inlet mm (inch) 30 (1-3/16)
Outlet mm (inch) 30 (1-3/16)
Water Drain Hose Inner Diameter mm (inch) 15.00 (19/32)
Pump
Motor Type DC Motor
No. of Speed 7 (Software Selection)
Input Power W 72
Hot Water Coil
Type Brazed Plate
No. of Plates 80
Size (W x H x L) mm 130 × 93 × 325
Water Flow Rate l/min (m3/h) 34.4 (2.1)
Pressure Relief Valve Water Circuit kPa Open: 300, Close: 265 and below
Flow Switch Magnetic Lead Switch
Protection Device A Residual Current Circuit Breaker (40)
Expansion Vessel Volume I 10
MWP bar 3
Capacity of Integrated Electric Heater kW 6.00
Note:
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 water inlet temperature of 30°C and water outlet temperature of 35°C.
Specification are subjected to change without prior notice for further improvement.

9
3. Features
Inverter Technology
- Energy saving
High Efficiency
Compact Design
Environment Protection
- Non-ozone depletion substances refrigerant (R407C)
Easy to use remote control
Weekly Timer setting
Quality Improvement
- Random auto restart after power failure for safety restart operation
- Gas leakage protection
- Prevent compressor reverse cycle
- Inner protector to protect compressor
Serviceability Improvement
- Breakdown Self Diagnosis function
- System Status Check Buttons for servicing purpose
- System Service Mode Button for servicing purpose
- Front maintenance design for mono bloc unit
Operation Condition
Water outlet temperature (°C) Ambient temperature (°C)
HEATING Maximum 65 35
Minimum 25 -20
NOTICE : When the outdoor temperature is out of the above temperature range, the heating capacity will drop significantly
and mono bloc unit might stop for protection control.

10
4. Location of Controls and Components
4.1 Mono Bloc Unit
Air inlet (rear)
A
ir outlet
Air inlet (side)
Handle
(2 pieces front and 2 pieces behind)
Cabinet Front Plate
Top Plate

11
4.1.1 Main Components
2
7
10
8
1
13
10
6
3
4
11
12
5
A
14
9
a
b
Optional cord / cable :-
•
3-way Valve cable (3 x min 0.5mm
2
)
•
Booster Heater cord (3 x min 1.5mm
2
)
•
Room Themostat cable (4 or 3 x min 0.5mm
2
)
•
TankOLPcable(2xmin0.5mm
2
)
•
Tank Sensor cable (2 x min 0.3mm
2
)
•
External Controller cable (2 x min 0.5mm
2
)
•
Solar Three-way Valve cable (3 x min 0.5mm
2
)
•
Solar Pump Station cable (2 x min 0.5mm
2
)
Component name
1PCB
2Pressure relief valve
3Flow switch
4Pressure gauge
5Water pump
6RCCB
7Bushing
8Cabinet front plate
9Cabinet top plate
0Overload protector
aHeater assembly
bExpansion vessel
cCover
dAir purge valve
Connector name
g Water inlet
h Water outlet
(VIEW
WITHOUT
COVER)
DETAIL A g DETAIL A h
FOR
WH-MHF12G6E5
(WITHOUT OLP
COVER)
FOR
WH-MHF09G3E5
(WITHOUT OLP
COVER)
View without cabinet top plate
Ty p e
designation
60245 IEC
57 or heavier
cord/ cable
Remote Control
Power Supply 1
Power Supply 2
7

20
5. Dimensions
5.1 Mono Bloc Unit
(579)
400 356
154
1410
615426.5
175
275
413
30
cc
70
277
320
152
1283
256 (30)
293
318.5
50
45 45 45
83.5
Unit: mm
<Top View>
<Front View>
<Back View>
<Side View><Side View>

21
6. Refrigeration and Water Cycle Diagram
Mono bloc Unit
Pipe
Temp.
Sensor
Defrost
Sensor
Pipe
Temp.
Sensor
Pipe
Temp.
Sensor
Pipe
Temp.
Sensor
Air
Temp.
Sensor
Low
Pressure
Sensor
Bypass
Exit
Temp.
Sensor
Eva
Exit
Temp.
Sensor Backup Heater
Outdoor
Side
Expansion
Vessel
Pressure
Relief
Valve
Air Purge Valve
Water
Flow
Switch
Water
Pump
Water
Inlet
(Connect
to
Sanitary
Tank)
Water
Outlet
(Connect
to
Sanitary
Tank)
Drain
Refrigerant Cycle
Water Cycle
Heat
Exchanger
Heat
Exchanger
Strainer Strainer
Subcooler
4-Way
Valve
Gas
Side
(3-Way
Valve)
Liquid
Side
(3-Way
Valve)
Pressure
Switch
High
Pressure
Sensor
Compressor
Discharge
Temp. Sensor
Compressor
Water
Pressure
Gauge
Capillary
Tube
Expansion
Valve
StrainerExpansion
Valve
(Bypass)
Muffler

26
8.2 WH-MHF12G6E5
SW2
SW1
(WATER SYSTEM)
ACN
(WHT)
ACL
(BLK)
CN-SOLAR_B
(IVORY)
CN-SOLAR (WHT)
CN-PWR
(BLK)
3
BL
W
CN-RCV2
(WHT)
71
1
TERMINAL
BOARD
TANK
OLP
3-WAY VALVE ROOM
THERMOSTAT
BOOSTER
HEATER TANK
SENSOR EXTERNAL
CONTROL
11
1
CN-TH1
(WHT)
CN-FLOW
(YLW)
CN-REMOTE2
(WHT)
2FLOW SWITCH
1
(WHT)
(WHT)
OB
YBL
GRGR
Y
GG G
HEATER
R
BR
PUMP-N
(YLW)
R
(BRW)
ACL2-3V
ACL1-3V
(ORG)
(RED)
PUMP-L
ACN-3V
(BLU)
VALVE
SOLAR 3-WAY
20 21 22 23
19
BL BL
3
CN-THERMO
1211 15 16
BL BL
W
BR BL W
OO
2
(WHT)
CN-OLP2
13 1489
10
56 7
4321 1817
1
ELECTRONIC CONTROLLER (SOLAR)
71
6
4 1
4 1 2 34
1 2 3
1
2
CN-TH2
CN-V3
(GRN)
5
1
7
SOLAR PUMP
t˚
t˚
W
OPTIONAL
N CLOSE OPEN
OPENCLOSE N LN HEAT
W
W
W
W W W
SW201
TERMINAL
BOARD TERMINAL
BOARD
WATER OUTLET TEMP. SENSOR (THERMISTOR) REFRIGERANT TEMP. SENSOR (THERMISTOR) WATER INLET TEMP. SENSOR (THERMISTOR)
NOISE FILTER CIRCUIT
SIGNAL DETECTION CIRCUIT
TERMINAL
BOARD
335
33
1
1
LEAD WIRE FIXING FOR OLP
BLUE
BLACK BLUE
BLACK
ORANGE
ORANGE
3 2 1
AC1-L3
1
3
T2
(BLK)
AC1-N
(BLK)
(WHT)
TRANSFORMER
T1
(BLK)
CN-T1
(WHT)
RR
BL
W
WW
W
BL
(RED)
DATA
AC2-L2
(YLW)
G04
(GRN)
G03
(GRN)
HT1-L3
(RED)
HT1-L2
(ORG)
AC2-L3
(BLK)
AC2-N2
(WHT)
SURGE PROTECTION CIRCUIT
SIGNAL DETECTION CIRCUIT
ACN-BOOSTER
(WHT)
t
˚
80±3°C
CN-OLP1
(WHT) 2
1B
B
TERMINAL
BOARD
REFRIGERANT
SYSTEM
BACKUP HEATER
O
R
80±3°C
O
OLP
80±3°C
BL
R
BL
BL
BL
W
BL
W
(L1)
(N1)
W
GROUNDING
TERMINAL BOARD
ELCB
T3
Y
GG
31
1 1
BL
BL
2 2
CN-HT (WHT)
O
11 22 3322
11
AB
SIGNAL DETECTION CIRCUIT
R
BR
O
BL
Y
R
BR
O
BL
Y
CONTROL PANEL
SURGE PROTECTION CIRCUIT
(GRN)
G01
RECTIFICATION CIRCUIT
RECTIFICATION CIRCUIT
ELECTRONIC CONTROLLER (MAIN)
CN-TH3
(WHT)
1 2
t
˚
HEX WATER OUTLET TEMP. SENSOR (THERMISTOR)
BR
BL
REMARKS: W:WHITE O:ORANGE R:RED B:BLUE BL :BLACK Y:YELLOW BR :BROWN G:GREEN GR :GRAY Y/G :YELLOW/GREEN RCCB/ELCB :RESIDUAL CURRENT CIRCUIT BREAKER/
EARTH LEAKAGE CIRCUIT BREAKER
L1
(WHT)
L2
(WHT)
2
1
1
2
REACTOR
OLP
OLP
GG02
(GRN) FUSE1
T6.3A L250V
NOISE FILTER CIRCUIT
G
COMMUNICATION CIRCUIT
NOISE
FILTER
CIRCUIT
G05
(GRN)
(GRN)
G07
RECTIFICATION CIRCUIT
RECTIFICATION CIRCUIT
WATER
PUMP
CIRCUIT
G08
(GRN)
14567
BL
CN-PUMP2
(WHT)
M
WATER
PUMP
BL
W
R
ACL3
(BLK)
ACL-BOOSTER
(BRW)
ACN-BOOSTER2
(WHT)
ACL-BOOSTER2
(BLK)
W
W
WBLR
BR
B
W
74321 74321
BL R
BR
B
230V 40A
In=30mA
POWER
SUPPLY 1
Single phase
AC230V 50Hz
POWER
SUPPLY 2
Single phase
AC230V 50Hz
(L)
(N)
BL W
Y/G
ELCB
230V 40A
In=30mA
LEAD WIRE FIXING FOR HEATER
WHITE
WHITE
ORANGE
RED
1
22
1
22
1
1
WW
W
R
11

27
(REFRIGERANT SYSTEM)
NOISE FILTER
(GRAY )
3
MAG NETIC COIL
(4-W AY VA LVE )
3
CN -T H3
BL
CAPACITOR
W
BL
W
ELECTRONIC CONTROLLER (MAIN)
1
BASE PA N
HEATER
Y/G
3
FUSE2
CRANKCASE
NOISE
2 3
(BLA CK)
112
T 3. 15 A L250 V
1
COMPRESSOR
14
M
(WHITE )
CN -D IS
4
CN -T H1
(BLUE)
1
(WHITE )
CN -T H2
(BLA CK)
G
1
(WHITE )
M
W(YELLOW)
(YE LLOW)
1
M
(B LU E )
GR
R
LOWER FAN MOTOR UPPER FAN MOTOR
ELECTRO MAGNETIC COIL
(MAIN EXPANSION VALVE)
ELECTRO MAGNETIC COIL
(BYPASS EXPANSION VALVE)
R
R
1
1
T 3. 15 A L250 V
COMMUNICATION
RY-HT2
6
AC-L
CIRCUIT
RY-HT1
M
1
1
BL
4 3
RECTIFICATION FILTER
W
G
CN -W H T
(WHITE)
(RE D )
DC P
CN - E V
6
2
CN -R Y 1
SWITCHING POWER
SUPPLY CIRCUIT
RECTIFICATION
CIRCUIT
PFC
CIRCUIT
DCN -I N
CIRCUIT
AC-C
(BLUE)
DC N
(BLA CK)
2
DCN 2
(BLA CK)
FUSE1
1
CN -F M 2
(WHITE)
1 4 7 7 4
2
CN -F M 1
CN -P S W 1
CN -EV 2
V U
U(RED)
P
N
V(BLUE)
(RED)
(B LU E )
(B LA C K )
3~
FG1
(GREE N)
G
MS
R
1
DC P - IN
(WHITE)
BL
(CAPACITOR) ELECTRONIC CONTROLLER
AC-C
(BLA CK)
B
1
CN -ACL
AC-BLK01
(O P TI O NA L )
4
REA CTOR
W
GR
W
RELAY
6
W
RY-HOT
FG2 (GREE N)
BL
BL
BL
DCN -OUT
ELECTRONIC CONTROLLER (SUB)
CN -AC N
(BLAC K)
FG1 (GREEN)
(WH ITE)
(BLA CK) AC-BLK
CN -B LK (BLA CK)
CN -W H T
CIRCUIT
W
R B
BY
R
BR
Y
(W HI T E)
HEATER
CIRCUIT
(WHITE )
CIRCUIT
R
LOW PRESSURE SENSOR HIGH PRESSURE SENSOR
2 3 1BL
4
CN-LPS (BLUE)
CN-HOT (BLUE) CN-HT1 (WHITE) CN-HT2 (BLACK)
AC-BLK02 (BLACK) AC-WHT02 (WHITE) COM3 (RED)
CN-HPS (RED)
W
2 3
R
ELECTRO
5
TERMINAL
BOARD
TERMI
WATER
SYSTEM
NAL
BOARD
HIGH PRESSURE SWITCH
t° t° t° t° t° t°
REMARKS: W:WHITE R:RED B : BLUE P : PINK BL : BLACK Y : YELLOW BR : BROWN O : ORANGE G:GREEN GR:GRAY Y/G : YELLOW/GREEN
3 1 2
AWVU
RED
BLUE
COMPRESSOR TERMINAL
(REFER TO TERMINAL COVER FOR WIRE INSERT)
YELLOW
CONNECTION
U-V
U-W
V-W
Resistance of Compressor Windings
4JD650XCA22 (Ω)
0.435 0.452 0.441
EVA EXIT TEMP. SENSOR
(THERMISTOR)
BYPASS EXIT TEMP. SENSOR
(THERMISTOR)
DEFROST TEMP. SENSOR
(THERMISTOR)
OUTDOOR PIPE TEMP. SENSOR
(THERMISTOR)
OUTDOOR AIR TEMP. SENSOR
(THERMISTOR)
DISCHARGE TEMP. SENSOR
(THERMISTOR)

76
14.4 How To Adjust Water Flow Rate
Before adjust the water flow rate, make sure that the total water volume in the installation is 50 litres minimum for
heating side. The default setting is SPEED 4 (Only for WH-MHF09G3E5) and SPEED 5 for WH-MHF12G6E5. Please
ensure the minimum flow rate is not less than 13 l/min and not more than 50 l/min.
The available external static pressure (kPa) in function of the water flow rate (l/min) is shown in the P-Q graph.
Depend on the hydraulic system pressure loss and type, the water flow rate can be adjusted by remote control.
1 When the Air-to-Water Heatpump is in stop operation, press SERVICE button for 5 seconds.
2 Press / button to select menu S02 (PUMP SPEED ADJUST MODE) and press SET button to confirm the
menu.
3 Press SELECT button then press / button to change pump speed and press SET button to confirm the
pump speed.
4 Press OFF/ON button to exit PUMP SPEED ADJUST MODE.
During PUMP SPEED ADJUST MODE, we can select AIR PURGE function by pressing FORCE button.
In AIR PURGE function, the pump will operate ON and OFF for 10 minutes to purge the air in the hydraulic system.
Press again the FORCE button to exit AIR PURGE function. PUMP SPEED ADJUST MODE will stop operation.
14.5 Expansion Vessel Pre Pressure Checking
Expansion Vessel with 10 L air capacity and initial pressure of 1 bar is installed in this Mono bloc unit.
Total amount of water in system should be below 200 L.
(Note: This amount of water is not include the tank unit volume)
If total amount of water is more than 200L, please install additional expansion vessel (field supply).
Please keep the installation height difference of system water circuit within 10 m.
(Inner volume of same Mono bloc unit is about 5 L)
14.6 Dry Concrete [SERVICE MODE: 03]
If Dry Concrete has been set, Dry Concrete status can be activated and monitored by following procedure.
1 Press SERVICE button for 5 seconds.
2 Press ▲to enter menu Sr: 03 and press SET button to activate Dry Concrete function.
3 Press OFF/ON button to quit setting.
110
100
90
80
70
60
50
40
30
20
10
0
0102030405060
13
1
2
3
4
5
6
7
WATER FLOW RATE (L/min)
E
X
T
E
R
N
A
L
S
T
A
TI
C
PR
E
S
S
U
R
E
(
k
Pa)
NOT APPLICABLE RANGE NOT APPLICABLE RANGE

129
18.1.2 WH-MHF12G6E5
Heating Characteristics at Different Outdoor Air Temperature
Condition
oOutdoor air temperature : 7°C (DBT), 6°C (WBT)
oIndoor water inlet temperature : 30°C
oIndoor water outlet temperature : 35°C
Outdoor Temperature (°C)
Outdoor Temperature (°C)
Input Power
(
kW
)
-15-12-9-6-3036912
9.000
10.000
11.000
12.000
13.000
14.000
Capacity
(
kW
)
1.500
2.500
3.500
4.500
5.500
6.500
-15-12-9-6-3036912

130
18.2 Heating Capacity Table
18.2.1 WH-MHF09G3E5
Water
Out (°C) 30 35 40 45 55* 65**
Outdoor
Air (°C)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
-15 9000 3460 9000 3710 9000 4010 8800 4260 8500 4710 7800 5380
-7 9000 3060 9000 3290 9000 3560 8900 3830 8900 4280 9000 5020
2 9000 2430 9000 2610 9000 2910 9000 3210 9000 3720 9000 4370
7 9000 1820 9000 1940 9000 2210 9000 2460 9000 2990 9000 3640
12 9000 1520 9000 1700 9000 1880 9000 2160 9000 2630 9000 3200
* is tested with dT = 8°C,
** is tested with dT = 10°C
18.2.2 WH-MHF12G6E5
Water
Out (°C) 30 35 40 45 55* 65**
Outdoor
Air (°C)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
Capacity
(W)
Input
Power
(W)
-15 12000 5160 12000 5530 11000 5510 10800 5490 9700 5520 8000 5610
-7 12000 4430 12000 4760 11500 4910 11200 5060 10100 5060 9600 5430
2 12000 3420 12000 3680 11500 3860 11300 4140 10800 4660 10300 5130
7 12000 2520 12000 2690 12000 3060 12000 3440 12000 4100 12000 4970
12 12000 2030 12000 2360 12000 2690 12000 3020 12000 3610 12000 4370
* is tested with dT = 8°C,
** is tested with dT = 10°C