Before obtaining access to terminal, all supply circuits must be disconnected.
1-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check valve.
Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Tools for R410A
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Vacuum pump adaptor
Electronic refrigerant
charging scale
Keep tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction
of compressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Charge refrigerant from liquid phase of gas cylinder.
If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency
will be lowered.
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
2
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting
·Use high-tension side pressure of 5.3 MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09 MPa·G or over.
3 Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
Cylinder with syphon
8Refrigerant recovery equipment
specifications
. (UNF1/2)
1-3. CAUTIONS FOR REFRIGERANT PIPING WORK
Tools for R410A (The following table shows whether conventional tools can be used or not.)
Tools and materialsUseR410A toolsCan R22 tools be used?
Gauge manifold
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermistor vacuum gauge and
vacuum valve
Charging cylinder
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Bend the pipes
Cut the pipes
Weld the pipes
Charge refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refrigerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adopter for reverse flow check
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
(Usable if equipped
with adopter for rever se flow)
Can R407C tools be used?
(Usable if equipped
with adopter for rever se flow)
33
1-4. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the
performance of the unit.
1. Avoid installing the uint in a location where it will be exposed directly to seawater or sea breeze.
2. If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away by
rainwater. (If a sunshade is installed, rainwater may not clean the panel.)
3. To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.
4. If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.
5. If the unit is damaged during installation or maintenance, be sure to repair it.
6. Be sure to check the condition of the unit regularly.
7. Be sure to install the unit in a location with good drainage.
4
2
(TH32)
SPECIFICATIONS
PUHZ-W50VHA(-BS)
1: , 230V, 50Hz
Nominal water flow rate (Heating mode)L/min
Heating
icapaC°C
(Min.1.50䌾) 5.00
(A7/W35)
(Min.1.50䌾) 5.00
Heating
capaC
Wkyti
(A2/W35)
Pressure difference (water circuit)䇭)teltuo/t
Heating pump input (based on EN14511)kW
Cooling
(COP)Water temperature (inlet/outlet)+12/+7°C
(A35/W7)
EER
Power inputkW
Cooling
(COP)Outside air temperature (Wet-bulb)+ 24°C
(A35/W18)
EER
Pressure difference (water circuit)䇭kPa
Cooling pump input (based on EN14511)kW
Note: "COP" and "Power input" in the above table are values that contains the "pump input (based on EN 14511) ".
Model name
Running currentHeating
Cooling
Power factorHeating
Cooling
(A7/W35)
(A35/W7)
(A7/W35)
(A35/W7)
PUHZ-W50VHA(-BS)
A
Atnerruc.xaM
feR
Linear expansion valve
Compressor
Model
Motor outputkW
Start type
Protection devices
Comp. Surface thermo
Oil (Model)L
WretaehesacknarC
Heat exchangerAir
Water
Plate heat exchanger
FanFan(drive)×No.
Fan motor output
Air flow
kW
3
/min
m
(CFM)
Defrost method
Noise level
HeatingdB (SPL)
CoolingdB
DimensionsWidthmm (in.)
Depthmm (in.)
330 +30
Heightmm (in.)
)sbl(gkthgieW
Refrigerant
Quantitykg (lbs)
Guaranteed operatingHeating
range (Outdoor)Cooling
Outlet water temp.Heating
(Max in heating, Min in cooling)
Cooling
Return waterHeating
temperature rangeCooling
°C
°C
°C
°C
°C
°C
nim/LegnaretarwolfretaW
14.3
4.10
1.22
3.13
1.60
12
0.01
12.9
4.50
2.94
1.53
4.50
4.13
1.09
10
0.01
5.4
6.8
97
97
13.0
16
Galvanized plate
Munsell 3Y 7.8/1.1
Hermetic twin rotary
SNB130FGCM
0.9
Inverter
HP switch
Discharge thermo
0.35 (FV50S)
-
Plate fin coil
Propeller fan × 1
0.086
50
(1,760)
Reverse cycle
46
45
*1
*2
*2
950 (37-3/8)
*3
(13+1-3/16)
740 (29-3/16)
64 (141)
R410A
1.7 (3.7)
-15 ~ +35
*4
~ +46
-5
+60
+5
~
+5 +59
~
+8 +28
6.5 14.3
~
Heating(A7/W35)
Heating(A2/W35)
Cooling(A35/W7)
Cooling(A35/W18)
regnahcxetaehetalPsnoitacificepstinuroodtuO
ALFA LAVAL
03-03HCAA
Ref. IN
mm4.04:A%
(Heating)
mm2.862:B%
mm39:WAezisrekaerB
mm523:HgnisacretuO
mm45:DhsiniflanretxE
Ref. O UT
(Heating)
setalp03lortnoctnaregir
Maximum outlet water temperature
65
]
°C
60
55
50
45
Maximum outlet water temptemperature [
40
-20-15-10-50510
*1 Hot gas with four-way valve
*2 at distance of 1m from outdoor unit
*3 grill
*4 With the optional air outlet guide, the operation at
*1.A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
*2.Max. 80 m
*3.The gures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
*3AC 230 VAC 230 VAC 230 VAC 230 V
Notes: 1. Wiring size must comply with the applicable local and national codes.
2.
Power supply cables and the cables between Controller and Outdoor unit shall not be lighter than polychloroprene
sheathed fl exible cables.
(Design 60245 IEC 57
)
3. Be sure to connect the cables between Controller and Outdoor unit directly to the units (no intermediate connections are
allowed).
Intermediate connections may result in communication errors. If water enters at the intermediate connection point, it may
cause insuffi cient insulation to ground or a poor electrical contact .
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
4. Install an earth longer than other cables.
05ledomtinuroodtuOV85 V140 V112 Y,140 Y
~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V
Warning:
In case of A-control wiring,
there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals
when the power is energized. If isolator should be used between Interface unit/Flow temp. controller and outdoor unit, please use 3-pole type.
3 poles isolator
S1
Interface unit/
S2
Flow temp. controller
S3
18
REFRIGERANT SYSTEM DIAGRAM7
PUHZ-W50VHA(-BS)
PUHZ-W85VHA(-BS)
P-Sensor
TH7
Water OUT
Plate HEX
Water IN
TH32
TH6
CHECK/V
CHECK/V
Receiver
Strainer
(#100)
LEV-B
Strainer(#100)Strainer(#100)
REV/V
S/V
Strainer
(#100)
LEV-A
COMP
CHECK/V
H/P SW
TH4
TH3
Distributor
TH33 (W50 only)
TH8P/B
Refrigerant flow in heating
Refrigerant flow in cooling
Symbol
COMP
H/P SW
Plate HEX
REV/V
S/V
CHECK/V
P-Sensor
P/B
LEV-A
LEV-B
TH32
TH3
TH4
TH6
TH7
TH8
TH33
Receiver
Part name
Compressor
High pressure switch (63H)
Plate Heat Exchanger
Reversing (4-way) valve (21S4)
Solenoid valve
Check valve
Pressure sensor (63HS)
Power board
Linear expansion valve -A
Linear expansion valve -B
Inlet water temperature thermistor
Liquid temperature thermistor
Discharge temperature thermistor
Plate HEX liquid temperature thermistor
Ambient temperature thermistor
Heatsink temperature thermistor
Comp.shell temperature thermistor
Receiver
Detail
DC inverter twin rotary compressor (Mitsubishi Electric Corporation)
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the control board of outdoor unit. Actions to be taken for service,
which depends on whether or not the trouble is reoccurring at service, are summarized in the table below. Check the contents
below before investigating details.
Unit conditions at service
The trouble is reoccurring.
The trouble is not reoccurring.
Error code
Displayed
Not displayed
Logged
Not logged
Actions to be taken for service (summary)
Judge what is wrong and take a corrective action according
to “8-3. Self-diagnosis action table”.
Conduct troubleshooting and ascertain the cause of the
trouble.
Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring
and etc.
Reset error code logs and restart the unit after finishing
service.
There is no abnormality in electrical component,
controller board, and etc.
Re-check the abnormal symptom.
Conduct troubleshooting and ascertain the cause of the
trouble
Continue to operate unit for the time being if the cause
is not ascertained.
There is no abnormality concerning of parts such as
electrical component, controller board, and etc.
.
8-2. CHECK POINT UNDER TEST RUN
Before test run
• After installation of outdoor units, piping work and electric wiring work, re-check that there is no water leakage, loosened con-
nections and incorrect polarity.
• Measure impedance between the ground and the power supply terminal block (L, N) on the outdoor unit by 500 V Megger
and check that it is 1.0 M or over.
• Turn on power supply 12 hours before test run in order to protect compressor.
• Make sure to read operation manual before test run. (Especially items to secure safety.)
21
8-3. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on>
Error Code
None
Abnormal point and detection method
—
1 No voltage is supplied to termi-
nal block(TB1) of outdoor unit.
a) Power supply breaker is
b) Contact failure or disconnecc) Open phase (L or N phase)
2 Electric power is not charged to
power supply terminal of outdoor power circuit board.
a) Contact failure of power
b) Open phase on the outdoor
W50 :
W85 :
Disconnection of connector
HW140V :
3 Electric power is not supplied
to outdoor controller circuit
board.
a) Disconnection of connector
4 Disconnection of reactor (DCL
or ACL)
5 Disconnection of outdoor noise
filter circuit board or parts failure in outdoor noise filter circuit
board
Case
1 Check following items.
turned off.
tion of power supply terminal
2 Check following items.
supply terminal
power circuit board
Disconnection of connector R or S
TABT or TABS
Disconnection of connector LI, NI
(CNDC)
3 Check connection of the connector (CNDC)
Check connection of the connector, LD1 and
4 Check connection of reactor. (DCL or ACL)
W50 : Check connection of “LO” and
“NO” on the outdoor noise filter circuit board.
Check connection of “R” and “S” on the
outdoor power circuit board.
W85 : Check connection of “L1” and “L2” on
Refer to 8-6.
HW140V :
Check connection of "DCL1" and "DCL2" on
5 a) Check connection of outdoor noise filter
circuit board. Refer to 8-6.
b) Replace outdoor noise filter circuit board.
Judgment and action
a) Power supply breaker
b) Connection of power supply terminal
block.(TB1)
c) Connection of power supply terminal
block.(TB1)
a) Connection of power supply terminal
block.(TB1)
b) Connection of terminal on outdoor
power circuit board.
W50 :
Check connection of the connector R or S.
Refer to 8-6.
W85 :
Check connection of the connector TABT or TABS.
Refer to 8-6.
HW140V :
Check connection of the connector LI or NI.
Refer to 8-6.
on the outdoor controller circuit board.
LD2 for W50 and CNDC for W85/HW112/
HW140, on the outdoor power circuit board
(V) / noise filter(Y).Refer to 8-6.
.
the active filter module.(ACTM)
the outdoor power circuit board.
Refer to 8-6.
F3
63L connector open
Abnormal if 63L connector circuit is open
for 3 minutes continuously from being
switched on.
63L: Low-pressure switch
6 Defective outdoor power circuit
board
7 Defective outdoor controller
circuit board
1 Disconnection or contact failure
of 63L connector on outdoor
controller circuit board
2 Disconnection or contact failure
of 63L
3 63L is working due to refriger-
ant leakage or defective parts.
4 Defective outdoor controller
circuit board
22
6 Replace outdoor power circuit board.
7 Replace controller board (When items
above are checked but the units can not be
repaired.)
1 Check connection of 63L connector on
outdoor controller circuit board.
Refer to 8-6.
2 Check the 63L side of connecting wire.
3 Check refrigerant pressure.
Charge additional refrigerant.
Check continuity of 63L.
Replace low pressure switch if it is defective.
4 Replace outdoor controller circuit board.
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