AIR COOLED CHILLER
(C Series)
INSTALLATION MANUAL
Group: MINI CHILLER
Part Number: A08019025453
Date: JULY 2003
IM-ACC1&2-0703-McQuay
© 2003 McQuay International
English
4AC/AC 20/25/30 C/CR
4AC/AC 40/50/60 C/CR
1181,610,0 10,0
460,0
85,0 128,5
WATER
INLET
DRAINAGE
WATER
OUTLET
128,5
789,5
475,0
55,2
80,0 300,0
80,0
1181,6
460,0
85,0
128,5
15,0 15,0
300,079,7
20,0
80,3
116 0,0
1409,4
878,8
WATER
INLET
DRAINAGE
WATER
OUTLET
OUTLINE AND DIMENSIONS
i
! Caution
Sharp edges and coil surfaces are potential locations which may cause
injury hazards. Avoid from being in contact with these places.
! Avertissement
Les bords coupants et les surfaces du refroidisseur tuulaire présentent
un risque de blessure. Mieux vaut éviter le contact avec ces endroits.
! Vorsicht
Scharfe Kanten und Wärmetauscherflächen stellen eine Gefahrenquelle dar.
Jeglicher Kontakt mit diesen Stellen ist zu vermeiden.
! Cautela
Per preservarsi da eventuali ferite, evitare di toccare gli spigoli affilali e la
superficie della serpentina.
! Осторожно
Острые края и поверхности змеевиков являются
потенциальными местами нанесения травм. Остерегайтесь
контакта с этими местами.
! Cuidado
Los Bordes afilados y la superficie del serpentín pueden producir lesiones.
Evite tocarlos.
ii
This product is subjected to Waste of Electrical and Electronic Equipment Regulations (WEE
E
Regulations). The waste product shall be separately collected by specific collection and treatment centre
.
P
lease refer to local authorithy for these centres. This is only applicable to European Union countries
.
Ce produit est soumis
à
la r
ééé
é
lectriques e
t
ййкйй
ééé
é
tre ces centres. Ceci
est uniquement applicable aux pays de l'Union Euro
p
é
enne
.
Questo prodottoè soggetto alle disposizioni RAEE (Rifiuti di apparecchiature elettriche ed elettroniche)
.
à
à
locali. Questa disposizione
è
valida solamente i paes
i
dell
U.E.
é
ctrico y Electrnico en materia d
e
fico
de colecc
i
solamente aplicable a los pases de la Un
i
n
Europea
.
Dieses Produkt unterliegt den Bestimmungen zur Entsorgung von elektrischen und elektronische
n
er
tes
ü
ll bei Ihrer
ü
ndiges Abfall-Amt. Dieser
Hinweis gilt nur f
ischen Union
.
Процес
с
у
тилизациианногопродуктарегулируетсяправиламип
о
у
тилизаци
и
отходо
в
(WEEE Regulations).
т
и
правил
а
Европейског
о
NOTICE
English
HEAT
OFF
COOL
ON
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
C02
C01
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
WI
CN6
WO OA
CD1 CD2DF1 DF2
N
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
N/L2
220-240/1pH/50Hz
L/L1TB1
12V 12V 12V N1 N1 N1 1 2 O/F PUMPC/H
4WV
HTR
AL
IN
AL
OUT
LP HP FL
H
T
R
OF
OUT
OF
IN
TB3
L
N
C
OF
C
S
R
E
COMP.
L
N
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
A
B
COMP
COMP
CAP
98
95
96
C O/L
TB2
OF
CAP
R
R
C
S
MODEL : 4AC / AC 20 C
PART NO : 50 13 4 066991
ELECTRICAL WIRING DIAGRAM
iii
CN6
N
WI WO OA
CD1 CD2DF1 DF2
HEATOFF
COOLON
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
C02
C01
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
N/L2
220-240/1pH/50Hz
L/L1TB1
12V 12V 12V N1 N1 N1 1 2 O/F PUMPC/H
4WV
HTR
AL
IN
AL
OUT
LP HP FL
H
T
R
OF
OUT
OF
IN
TB3
L
N
C
OF
C
S
R
E
COMP.
L
N
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
A
B
COMP
COMP
CAP
98
95
96
C O/L
TB2
OF
CAP
R
R
C
S
MODEL : 4AC / AC 25 / 30 C
PART NO : 50 13 4 066992
iv
English
MODEL : 4AC / AC 40 / 50/ 60 C
PART NO : 50 13 4 076741
v
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
CO2
CO1
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
WI
CN6
WO OA
CD1CD2 DF1DF2
N
CA
B
OF 1
CAP
CA
B
OF 2
CAP
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
S
380-415/3pH/50Hz
RTB1 T N
12V 12V 12V N1 N1 N1 N1 1
ON
OFF
COOL
HEAT
2 O/F C/H
4WV
HTR
AL
IN
AL
OUT
LP HP
FL
H
T
R
OF OUT
OF IN
TB3
TB2
L
N
C
OF 1
L
N
42 41
C
OF 2
U
V
W
E
COMP.
U
V
W
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
31
81
71
NRST
PHASE
PROTECTOR
32
COMP PUMP
98
95
96
C O/L
98
95
96
P O/L
MODEL : 4AC / AC 20 CR
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
C02
C01
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
N
CN6
WI WO OA
CD1 CD2DF1 DF2
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
N/L2
220-240/1pH/50Hz
L/L1TB1
12V 12V 12V N1 N1 N1 1 2 O/F PUMPC/H
HEATOFF
COOLON
4WV
HTR
AL
IN
AL
OUT
LP HP FL
H
T
R
OF
OUT
OF
IN
TB3
L
N
C
OF
C
S
R
E
COMP.
L
N
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
A
B
COMP
COMP
CAP
98
95
96
C O/L
1
3
2
4
DEFROST SENSOR (1)
TB2
4WV
OF
CAP
R
R
5
7
6
8
R
E
L
A
Y
1
3
2
4
5
7
6
8
R
E
L
A
Y
R1
R2
C
S
PART NO : 50 13 4 066985
vi
English
MODEL : 4AC / AC 25 / 30 CR
PART NO : 50 13 4 066986
HEATOFF
COOLON
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
C02
C01
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
WI
CN6
WOOA
CD1CD2DF1DF2
N
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
N/L2
220-240/1pH/50Hz
L/L1TB1
12V 12V 12V N1 N1 N1 1 2 O/F PUMPC/H
4WV
HTR
AL
IN
AL
OUT
LP HP FL
H
T
R
OF
OUT
OF
IN
TB3
L
N
C
OF
C
S
R
E
COMP.
L
N
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
A
B
COMP
COMP
CAP
98
95
96
C O/L
1
3
2
4
DEFROST SENSOR (1)
TB2
4WV
OF
CAP
R
R
5
7
6
8
R
E
L
A
Y
1
3
2
4
5
7
6
8
R
E
L
A
Y
R1
R2
C
S
vii
MODEL : 4AC / AC 40/ 50/ 60 CR
PART NO : 50 13 4 076742
HEATOFF
COOLON
LIVE
COM2
COM1
BOILER
W_PUMP
OUT_FAN2
4WV2
A_FREEZE
ALM_OUT
ALM_IN
4WV1
OUT_FAN1
AUX-H
12V
F02
F01
LP2
LP1
HP2
HP1
C02
C01
FLOW
PO
ALM
DE2
DE1
C/H
ON/OFF
N
C
A
B
OF 1
CAP
C
A
B
OF 2
CAP
COMP DISCHARGE SENSOR (1)
OUTDOOR AIR TEMP SENSOR
LEAVING WATER SENSOR
ENTERING WATER SENSOR
S
380-415/3pH/50Hz
RTB1 T N
12VTB2 12V 12V N1 N1 N1 N1 1 2 O/F C/H
4WV
HTR
AL
IN
AL
OUT
LP HP FL 4WV
OF OUT
OF IN
TB3
L
45 44
N
C
OF 1
L
N
C
OF 2
U
V
W
E
COMP.
U
V
W
E
PUMP
FUSE
10A
5B
4B 1A
2A
SWITCH
31
32
COMP PUMP
98
95
96
C O/L
98
95
96
P O/L
DEFROST SENSOR (1)
1R
E
L
A
Y
3
2
4
5
R1
R
E
L
A
Y
R2
7
6
8
1
3
2
4
5
7
6
8
H
T
R
CN6
WI WO OA
CD1 CD2DF1
DF2
81
71
NRST
PHASE
PROTECTOR
viii
English
ix
ISOLATOR DIAGRAMS
TB1 L/L1 N/L2
N
L1
Power supply 230V / 1Ph-N / 50Hz
4AC/AC20/25/30 C/CR
AC TERMINAL BOX
ISOLATOR
E
FUSE
TB1 R S T N
NL1 L2
L3
Power supply 400V / 3Ph-N / 50Hz
4AC/AC40/50/60 C/CR
AC TERMINAL BOX
ISOLATOR
E
FUSE
x
English
This manual provides the procedures of installation to ensure a safe and good standard of operation for the
chiller.
Special adjustments may be necessary to suit local requirements.
Before using the chiller, please read this instruction manual carefully and keep it for future reference.
INSTALLATION MANUAL
AIR COOLED CHILLER
MODEL
Part No.: A08019025453
COOLING ONLY
R22
AC20C / MAC020C
AC25C / MAC025C
AC30C / MAC030C
AC40C / MAC040C
AC50C / MAC050C
AC60C / MAC060C
R407C
4AC20C / M4AC020C
4AC25C / M4AC025C
4AC30C / M4AC030C
4AC40C / M4AC040C
4AC50C / M4AC050C
4AC60C / M4AC060C
HEAT PUMP
R22
AC20CR / MAC020CR
AC25CR / MAC025CR
AC30CR / MAC030CR
AC40CR / MAC040CR
AC50CR / MAC050CR
AC60CR / MAC060CR
R407C
4AC20CR / M4AC020CR
4AC25CR / M4AC025CR
4AC30CR / M4AC030CR
4AC40CR / M4AC040CR
4AC50CR / M4AC050CR
4AC60CR / M4AC060CR
IM-ACC1&2-0703 (1)-McQuay
!!
!!
! WARNING
• Installation and maintenance should be performed by qualified person who are familiar with local code and
regulation, and experienced with this type of appliance.
1-1
- Recommended Fuse And Cable Sizes page 8
- Water Piping System Setup page 11
- Refrigerant Circuit page 11
-
Special Precautions When Dealing With R407C Unit
page 11
- Control Operation Guide page 12
- Servicing And Maintenance page 13
- Troubleshooting page 14
- Fan Speed Controller (Optional) page 15
- Isolator Switch Field Installation page 15
!!
!!
! CAUTION
Please take note of the following important points when installing.
• Do not install the unit where leakage of flammable gas may occur.
If gas leaks and accumulates around the unit, it may cause fire ignition.
• Do not overcharge the unit.
This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.
• Sharp edges and aluminium fin coil surface are potential which may cause injury hazards.
Avoid from being in contact with these locations.
INDEX
- Outline And Dimensions page i-ii
- Electrical Wiring Diagram page iii-viii
- Isolator Diagram page ix-x
- Transportation page 1
- Installation Location page 2
- Unit Installation page 4
- Physical Data page 5
- Water Piping and Fitting page 7
- Electrical And Wiring page 7
- Electrical Data page 8
TRANSPORTATION
• Use spreader bars or forklift to lift the unit to avoid damage to the panels. Figure 1 provides the dimensions of the crate for
lifting. Avoid violent movements. Do not remove crate until it is at its final location.
If necessary, use crane for unit above 11kW. Check that the hanger belts are able to support the unit. Refer to the weight
of the unit given in the specification manual for assistance.
Ensure that the hanger belts are not touching the coil, top panel and front panel. Use hosting bracket (provided along with
this manual) as shown in Figure 2. Lift the unit slightly to make sure it is balance before placing it in location. Never swing
or roll the unit.
Figure 1
577
577
1-2
English
INSTALLATION LOCATION
• Installation work should be done by the authorized dealer or qualified contractor. Never install the unit yourself.
• Make sure there is sufficient space for airflow around the unit. The discharged air should be directed outside using a duct
should the unit be installed in a plant room.
• Vibration isolator should be provided to prevent vibration and noise from the unit.
• When installing the unit on the ground, make sure the selected site is not subject to flooding.
• There should be sufficient space allocated for ventilation, servicing and maintenance when installing the unit. Refer to the
following figures for proper location.
500 500
500
1500
Figure 3: For single unit installation
AIR FLOW
AIR FLOW
AIR FLOW
MIN 500
Figure 2
HANGER
HANGING BELT
1-3
• Unit subjects to floor installation must be placed on a concrete slab. The slab must have thickness of 100mm and 50mm
wider and longer than the footprint of the unit (Figure 5). Place the concrete slab a distant from building to prevent
vibration and noise.
• In the case of heatpump operation with an outdoor temperature below 0°C, the unit must be installed at least 300mm above
ground level. This is necessary to prevent ice from accumulating on the frame and to permit proper operation in the event
of heavy snowfalls.
• The unit must be leveled on both axes. (Tolerance is less than 2mm per meter.)
Figure 5: For floor installation
Note: All units are in mm unless specified.
500
1000
1000 500
1500
Figure 4: For multiple unit installation
AIR FLOW
AIR FLOW
AIR FLOW
AIR FLOW
AIR FLOW
AIR FLOW
AIR FLOW
MIN 500
50 50
100
1-4
English
4AC/AC 020/025/030 C/CR
UNIT INSTALLATION
!!
!!
! CAUTION
• Improper handling of unit during installation could result in leaks, electrical shock or unit malfunction.
• Contact your dealer for reinstallation or dismantling of unit.
• Do not introduce foreign objects such as fingers, sticks etc. into the air inlet and air outlet.
• Do not climb or place objects on top of mini chiller.
4AC/AC 040/050/060 C/CR
1-5
PHYSICAL DATA
Note: For cooling nominal values are based on 12°C / 7°C entering / leaving evaporator water temperature, 35°C air ambient temperature.
Table A-1 : R407C - Cooling Only
Model 4AC20C 4AC25C 4AC30C 4AC40C 4AC50C 4AC60C
Nominal cooling capacity kW 6.15 6.74 7.91 11.72 14.65 15.24
Operating Weight kg 115.5 122.5 128 195 196.4 203.2
Refrigerant charge R407C kg 1.13 1.85 1.65 3.40 3.35 3.45
Compressor 1 Rotary comp 1 Scroll compressor
Control system LCD Electronic Control
Refrigerant - water heat exchanger Brazed Plate Heat Exchanger
Water connections (BSP) inches 111111
Maximum water pressure kPa 1000 1000 1000 1000 1000 1000
Hydronic circuit
Pump High Head Circulator Horizontal Multistage End-Suction
Available pressure kPa 72.94 98.58 89.27 91.70 67.51 70.32
Water inlet connection (BSPT) inches 111111
Water outlet connection (BSPT) inches 111111
Drain tap coupling (BSPT) inches 1/2 1/2 1/2 1/2 1/2 1/2
Closed expansion tank water volume litre 222555
Refrigerant - air heat exchanger
Tube diameter mm 9.52 9.52 9.52 9.52 9.52 9.52
No. of rows 122222
Tubes/row 30 30 30 54 54 54
Fin spacing mm
1.27 1.59 1.59 1.59 1.59 1.59
O/D Fan
Diameter inches 18 18 18 18/2 18/2 18/2
No. of blades 555555
Air flow (high speed) m3/min 62.3 62.3 62.3 62.3 62.3 62.3
Fan speed (high speed) r/min 910 920 920 920 920 920
Table A-2 : R22 - Cooling Only
Model AC20C AC25C AC30C AC40C AC50C AC60C
Nominal cooling capacity kW 5.28 6.89 8.06 11.72 14.65 15.53
Operating Weight kg 115.5 122.5 128 195 196.4 203.2
Refrigerant charge R22 kg 1.13 1.80 1.56 2.68 3.10 3.10
Compressor 1 Rotary comp 1 Scroll compressor
Control system LCD Electronic Control
Refrigerant - water heat exchanger Brazed Plate Heat Exchanger
Water connections (BSP) inches 111111
Maximum water pressure kPa 1000 1000 1000 1000 1000 1000
Hydronic circuit
Pump High Head Circulator Horizontal Multistage End-Suction
Available pressure kPa 83.55 97.39 88.08 91.70 67.51 65.98
Water inlet connection (BSPT) inches 111111
Water outlet connection (BSPT) inches 111111
Drain tap coupling (BSPT) inches 1/2 1/2 1/2 1/2 1/2 1/2
Closed expansion tank water volume litre 222555
Refrigerant - air heat exchanger
Tube diameter mm 9.52 9.52 9.52 9.52 9.52 9.52
No. of rows 122222
Tubes/row 30 30 30 54 54 54
Fin spacing mm
1.27 1.59 1.59 1.59 1.59 1.59
O/D Fan
Diameter inches 18 18 18 18/2 18/2 18/2
No. of blades 555555
Air flow (high speed) m
3
/min 62.3 62.3 62.3 62.3 62.3 62.3
Fan speed (high speed) r/min 910 920 920 920 920 920
1-6
English
Note: For cooling nominal values are based on 12°C / 7°C entering / leaving evaporator water temperature, 35°C air ambient temperature.
For heating nominal values are based on 40°C / 45°C entering / leaving evaporator water temperature, 7°C/6°C (DB/WB) air ambient temperature.
Table A-3 : R407C - Heatpump
Model 4AC20CR 4AC25CR 4AC30CR 4AC40CR 4AC50CR 4AC60CR
Nominal cooling capacity kW 4.98 6.45 7.33 11.72 13.48 14.95
Nominal heating capacity kW 5.86 7.47 9.53 13.19 14.95 17.58
Operating Weight kg 115.5 122.5 128.0 195.0 196.4 203.2
Refrigerant charge R407C kg 1.50 1.75 1.60 3.00 3.45 4.00
Compressor 1 Rotary comp 1 Scroll compressor
Control system LCD Electronic Control
Refrigerant - water heat exchanger Brazed Plate Heat Exchanger
Water connections (BSP) inches 111111
Maximum water pressure kPa 1000 1000 1000 1000 1000 1000
Hydronic circuit
Pump High Head Circulator Horizontal Multistage End-Suction
Available pressure (Cooling / Heating) kPa 87.21/76.47 100.89/92.77 93.89/76.38 91.70/74.54 82.15/63.75 74.67/35.27
Water inlet connection (BSPT) inches 111111
Water outlet connection (BSPT) inches 111111
Drain tap coupling (BSPT) inches 1/2 1/2 1/2 1/2 1/2 1/2
Closed expansion tank water volume litre 222555
Refrigerant - air heat exchanger
Tube diameter mm 9.52 9.52 9.52 9.52 9.52 9.52
No. of rows 122222
Tubes/row 30 30 30 54 54 54
Fin spacing mm
1.27 1.59 1.59 1.59 1.59 1.59
O/D Fan
Diameter inches 18 18 18 18/2 18/2 18/2
No. of blades 555555
Air flow (high speed) m
3
/min 62.3 62.3 62.3 62.3 62.3 62.3
Fan speed (high speed) r/min 910 920 920 920 920 920
Table A-4 : R22 - Heatpump
Model AC20CR AC25CR AC30CR AC40CR AC50CR AC60CR
Nominal cooling capacity kW 5.28 6.74 8.06 11.72 13.48 15.53
Nominal heating capacity kW 6.45 7.33 9.23 12.60 15.24 17.29
Operating Weight kg 115.5 122.5 128.0 195.0 196.4 203.2
Refrigerant charge R22 kg 1.55 1.93 1.75 3.00 3.65 4.00
Compressor 1 Rotary comp 1 Scroll compressor
Control system LCD Electronic Control
Refrigerant - water heat exchanger Brazed Plate Heat Exchanger
Water connections (BSP) inches 111111
Maximum water pressure kPa 1000 1000 1000 1000 1000 1000
Hydronic circuit
Pump High Head Circulator Horizontal Multistage End-Suction
Available pressure (Cooling / Heating) kPa 83.55/69.27 98.58/93.89 88.08/78.76 91.70/81.42 82.15/60.12 65.98/39.62
Water inlet connection (BSPT) inches 111111
Water outlet connection (BSPT) inches 111111
Drain tap coupling (BSPT) inches 1/2 1/2 1/2 1/2 1/2 1/2
Closed expansion tank water volume litre 222555
Refrigerant - air heat exchanger
Tube diameter mm 9.52 9.52 9.52 9.52 9.52 9.52
No. of rows 122222
Tubes/row 30 30 30 54 54 54
Fin spacing mm
1.27 1.59 1.59 1.59 1.59 1.59
O/D Fan
Diameter inches 18 18 18 18/2 18/2 18/2
No. of blades 555555
Air flow (high speed) m3/min 62.3 62.3 62.3 62.3 62.3 62.3
Fan speed (high speed) r/min 910 920 920 920 920 920
1-7
WATER PIPING AND FITTING
• All water pipe must be adequately insulated to prevent capacity losses and condensation.
• Install a 40 to 60-mesh strainer to ensure good water quality.
• Water pipes recommended are black steel pipe and copper pipe.
• During installation, the piping of the unit should be clamped before rotating the installation pipe to reduce the moment
induce on the piping.
• Users are recommended to install the pipes and accessories as shown in Figure 6.
• An air vent must be installed at the highest position, while a drainage plug at the lowest position of the water circuit. After
the leak test (0.6MPa), open the air vent to release any air trapped in the water circuit.
• Run the clean water through the water inlet and operate the pump to drain out the dirty water. Clean the strainer after
running the pump for 30 minutes.
• Fill up the water circuit after connecting the pipes and equipment. Check water leakage at all connections and joints. Do
not start the unit when the system is leaking.
• To optimize the capacity of the system, ensure that the system is free of air bubbles. The air trapped in the system would
make the system unbalanced.
!!
!!
! CAUTION
• Do not allow water to remain in the water pipes if the unit is not operating for a long period.
Water must be drained out if the unit is not running during winter. Failing to do so would cause the pipe to crack.
• Do not drink the chilled water in the unit.
P
P
4AC/AC 20/25/30 C/CR
4AC/AC 40/50/60 C/CR
PRESSURE GAUGE
GATE
VALVE
GATE
VALVE
BALANCING
VALV E
THERMOMETER
FLEXIBLE
GATE VALVE (LOWER
POSITION FOR DRAINAGE)
AIRVENT (INSTALL
HIGHEST POSITION)
FAN COIL UNIT/AIR HANDLING UNIT
GATE
VALV E
Figure 6
THERMOMETER
GATE VALVE
GATE VALVE
BALANCING
VALV E
STRAINER
CHECK
VALVE
MAKE UP
VALV E
BYPASS VALVE
(DIFFER ENT PRESSURE TYPE)
PRESSURE GAUGE
GATE
VALVE
GATE
VALVE
BALANCING
VALV E
THERMOMETER
FLEXIBLE
GATE VALVE (LOWER
POSITION FOR DRAINAGE)
AIRVENT (INSTALL
HIGHEST POSITION)
FAN COIL UNIT/AIR HANDLING UNIT
GATE
VALVE
THERMOMETER
GATE VALVE
GATE VALVE
BALANCING
VALV E
STRAINER
CHECK
VALV E
MAKE UP
VALV E
BYPASS VALVE
(DIFFER ENT PRESSURE TYPE)
ELECTRICAL AND WIRING
• Refer to the wiring diagram provided on the unit when making electrical wiring.
• Do not ground any electrical equipment to the water piping.
• Install an external isolator switch (if it is not provided) to prevent electrical shock.
1-8
English
4AC20C/CR 4AC25C/CR 4AC30C/CR 4AC40C/CR 4AC50C/CR 4AC60C/CR
Model
AC20C/CR AC25C/CR AC30C/CR AC40C/CR AC50C/CR AC60C/CR
Voltage Range ** 220 ~ 240V /1Ph /50Hz + N + ! 380 ~ 415V /3Ph /50Hz + N + !
Recommended Fuse * A 27 38 45 22 24 29
Power Supply Cable Size * mm
2
10 10 10 5 5 5
Number of Conductor 3 3 3 5 5 5
Interconnection Cable Size * mm
2
1.5 1.5 1.5 1.5 1.5 1.5
ELECTRICAL DATA
Table B-1 : ( R407C - Cooling Only )
Model 4AC20C 4AC25C 4AC30C 4AC40C 4AC50C 4AC60C
Power supply V-ph-Hz 230 / 1 / 50 400 / 3 / 50
Voltage range V 220 - 240 380 - 415
Nominal Power Input kW 2.62 2.96 3.69 4.94 5.97 6.88
Nominal Current Input A 12.70 13.59 17.48 9.29 10.22 12.93
Maximum Continuous Current A 18.3 23 27 14 14 17
Full Load Current (FLA) A 14 17.5 22.5 12.4 11.8 14.3
Locked Rotor Current (LRA) A 57 82 114 65.5 74 101
Pump Power Input W 183 189 199 320 345 349
Cooling / Heat Pump
RECOMMENDED FUSE AND CABLE SIZES
IMPORTANT : *
The figures shown in the table are for information purpose only. They should be checked and selected to comply with
the local/national codes of regulations. This is also subjected to the type of installation and conductors used.
**
The appropriate voltage range should be checked with label data on the unit.
!!
!!
! CAUTION
• All field wiring must be installed in accordance with the national wiring regulation.
• All the terminals and connections must be tightened. Improper connection and fastenings could cause electric shock, short
circuit and fire.
• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring work according to
the wiring diagram.
• The unit must be GROUNDED to prevent possible hazards due to insulation failure.
• All electrical wiring must not touch the refrigerant piping, compressor, pump, fan motor or any moving parts of the fan
motors.
• Do not operate the chiller with wet hands. It would result in electric shock.
• Do not use fuse of different amperage than stated. Using wire etc. to replace a fuse could cause equipment damage or fire.
Table B-2 : ( R22 - Cooling Only )
Model AC20C AC25C AC30C AC40C AC50C AC60C
Power supply V-ph-Hz 230 / 1 / 50 400 / 3 / 50
Voltage range V 220 - 240 380 - 415
Nominal Power Input kW 2.68 2.74 3.50 4.50 5.26 6.38
Nominal Current Input A 12.64 12.11 16.70 8.80 9.30 12.32
Maximum Continuous Current A 18.3 23 27 14 14 17
Full Load Current (FLA) A 14 16.5 21.4 10.5 11.3 12.3
Locked Rotor Current (LRA) A 57 82 114 65.5 74 101
Pump Power Input W 175 190 201 320 345 351
Table B-3 : ( R407C - Heatpump )
Model 4AC20CR 4AC25CR 4AC30CR 4AC40CR 4AC50CR 4AC60CR
Power supply V-ph-Hz 230 / 1 / 50 400 / 3 / 50
Voltage range V 220 - 240 380 - 415
Nominal Power Input (Cooling/Heating) kW 2.61/2.69 3.09/2.75 3.82/4.00 4.85/5.01 5.47/5.66 6.53/6.28
Nominal Current Input (Cooling/Heating)
A 12.69/12.99 14.3/14.1 19.29/20.19 9.13/9.23 9.59/9.96 12.77/12.67
Maximum Continuous Current A 18.3 23 27 14 14 17
Full Load Current (FLA) A 14 17.5 22.5 12.4 11.8 14.3
Locked Rotor Current (LRA) A 57 82 114 65.5 74 101
Pump Power Input (Cooling/Heating) W 173/181 186/195 194/214 320/334 336/347 347/358
Table B-4 : ( R22 - Heatpump )
Model AC20CR AC25CR AC30CR AC40CR AC50CR AC60CR
Power supply V-ph-Hz 230 / 1 / 50 400 / 3 / 50
Voltage range V 220 - 240 380 - 415
Nominal Power Input (Cooling/Heating) kW 2.61/2.70 2.95/2.83 3.55/3.56 4.59/4.65 5.07/5.01 6.57/6.26
Nominal Current Input (Cooling/Heating)
A 12.38/12.73 13.4/12.8 18.24/18.37 8.67/8.78 8.99/8.95 13.49/13.03
Maximum Continuous Current A 18.3 23 27 14 14 17
Full Load Current (FLA) A 14 16.5 21.4 10.5 11.3 12.3
Locked Rotor Current (LRA) A 57 82 114 65.5 74 101
Pump Power Input (Cooling / Heating) W 175/186 189/194 201/211 320/329 336/349 351/357
1-9
P
P
4AC / AC 20C/ 25C/ 30C
Water / Refrigerant Circuit Diagram
FILTER
DRIER
CAP TUBE
BPHE
COMPRESSOR
WATER PUMP
AUTO PRESS RELIEF VALVE
WATER
OUT
WATER
IN
EXPANSION
TANK
WATER STORAGE
TANK
4AC / AC 40C/ 50C/ 60C
Water / Refrigerant Circuit Diagram
FILTER
DRIER
CAP TUBE
BPHE
COMPRESSOR
WATER PUMP
AUTO PRESS RELIEF VALVE
WATER
OUT
WATER
IN
EXPANSION
TANK
WATER STORAGE
TANK
PART NO : 70-03-4-067460
PART NO : 70-03-4-087461
1-10
English
P
P
4AC / AC 20CR/ 25CR/ 30CR
Water / Refrigerant Circuit Diagram
CHECK
VALV E
BPHE
COMPRESSOR
CHARGE
COMPENSATOR
AUTO PRESS RELIEF VALVE
WATER
OUT
WATER
IN
EXPANSION
TANK
WATER STORAGE
TANK
PART NO : 70-03-4-067458
4AC / AC 40CR/ 50CR/ 60CR
Water / Refrigerant Circuit Diagram
BPHE
COMPRESSOR
WATER PUMP
AUTO PRESS RELIEF VALVE
WATER
OUT
WATER
IN
EXPANSION
TANK
WATER STORAGE
TANK
PART NO : 70-03-4-067459
CHECK
VALV E
FILTER
DRIER
HEATING
CAP
TUBE
COOLING
CAP
TUBE
SUCTION
ACCUMULATOR
CHECK
VALV E
LIQUID
RECEIVER
CHECK
VALV E
FILTER
DRIER
HEATING
CAP
TUBE
COOLING
CAP
TUBE
SUCTION
ACCUMULATOR
1-11
REFRIGERANT CIRCUIT
• All mini chiller units are pre-charged with R22 or R407C refrigerant.
SPECIAL PRECAUTIONS WHEN DEALING WITH R407C UNIT
• R407C is a zeotropic refrigerant mixture which has zero ozone depletion potential and thus conformed to the Montreal
Protocol regulation. It requires Polyester oil (POE) oil for its compressor lubricant. Its refrigerant capacity and performance are about the same as the refrigerant R22.
• POE oil is used as lubricant for R407C compressor, which is different from the mineral oil used for R22 compressor.
During installation or servicing, extra precaution must be taken not to expose the R407C system too long to moist air.
Residual POE oil in the piping and components can absorb moisture from the air.
• Refrigerant R407C is more easily affected by dust of moisture compared with R22, make sure to temporarily cover the
ends of the tubing prior to installation.
• No additonal charge of compressor oil is permitted.
• No other refrigerant other than R407C.
• Tools specifically for R407C only (must not be used for R22 or other refrigerant)
i) Manifold gauge and charging hose
ii) Gas leak detector
iii) Refrigerant cylinder/charging cylinder
iv) Vacuum pump c/w adaptor
v) Flare tools
vi) Refrigerant recovery machine
!!
!!
! CAUTION
• R407C must be charged as liquid. Usually R407C cylinder is equipped with a dip-pipe for liquid withdrawal.
If there is no dip-pipe, the cylinder should be inverted so as to withdraw liquid R407C from the valve.
• Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly and then
charge the unit with fresh R407C according to the amount recommended in the specification.
• Do not touch the compressor or refrigerant piping when the chiller is running. If necessary wear protective gloves.
WATER PIPING SYSTEM SETUP
• Fill up the water circuit after connecting all the pipes and equipment. Perform leak checks for all connections and joints.
Do not start the unit when the system is leaking.
• To optimize the capacity of the system, ensure that the system is free of air bubbles. The air trapped in the system would
make the system unbalanced.
• Ensure that the water tank is not full. This is to ensure optimal performance of the mini chiller. If the pressure is too high,
release the pressure from the auto pressure relief valve on the tank.
1-12
English
1. Handset location
The handset is located in the terminal box behind the service panel.
2. LED Display (microprocessor board)
The keypad LED will light up when the unit is powered up.
The LCD will light up when the unit is turned on.
3. LCD display (controller handset)
During normal operations, the LCD can display the entering water temperature, the leaving water temperature, the entering water setpoint temperature, compressor on or off status and outdoor air temperature. When malfunctioning occurred,
the LCD would blink. The display would show the faulty parameter and the date and time of the occurrence.
4. Controller functioning specification
There is a 3 minute delay for the compressor and fan motor to restart (default setting).
CONTROL OPERATION GUIDE
The unit is equipped with a microprocessor controller board. The microprocessor controller is provided to give temperature
control for the system by accurately measuring and controlling the water entering and water leaving temperature. The temperature setting in the unit is preset in the factory. It is not recommended to change the setting unless necessary. A wired
controller handset is connected to the microprocessor board. Every parameter setting and reading can be observed from the
LCD of the handset.
!!
!!
! CAUTION
• Use the controller handset to switch on / off the unit. Do not plug off the main power supply directly, it would cause
the unit to breakdown.
• Do not change the settings of the safety devices.
• Installation
When fastening the LCD panel to the bracket,
Step 1 Step 2
Hook the LCD panel
from the top first
Push to fasten the LCD
panel to the bracket
1-13
• Servicing
Servicing or maintenance of these units must be carried out by experienced personnel with specific training in refrigeration.
Repeatedly check the safety devices and continuous cycling of control components. These items must be analyzed and
corrected before being reset.
The simple design of the refrigeration circuit totally eliminates potential problems during normal unit operation. No maintenance work is needed on the refrigeration circuit as long as the unit is operating normally.
Ease of maintenance has been taken into consideration during the design stage such that the unit is easily accessible from the
service panels. The electrical components are especially easy to access since it is located in the terminal box in the front
service panel (Figure 7).
SERVICING AND MAINTENANCE
Figure 7
1. A 3V DC battery is supplied with the LCD. It is used to ensure that the LCD displays real time once the timer is set.
2. The LCD is wired to the main board via CN8 connection. (This is factory installed)
If the wiring between the LCD and PCB must be longer, an alternative is used. Use a 4-core wire of the desired length and
connect this wire between the terminal block CN2 on the LCD to the terminal block CN5 on the PCB. Ensure that the
correct wire terminals are connected.
3. Networking between chillers can be carried out. Connect the wire as shown
When removing the LCD panel from the bracket,
Step 1 Step 2
Remove the LCD panel
from the bottom part first
with help of a screw driver
Remove the
LCD panel
Factory installed
Alternative wiring between LCD panel and PCB
For networking only
A
A
A
B
B
B
12V
12V
12V
GND
GND
GND
JP13
CN8
CN2
CN5
Main Board Unit 00
LCD Panel
PCB Unit 01
1-14
English
1. Compressor does
not start.
2. Fan does not work.
3. Unit does work,
but insufficient
cooling.
4. Flow Switch Error
TROUBLESHOOTING
When any malfunction is occurred, immediately switch off the power supply to the unit, and contact the local dealer, if
necessary. Some simple troubleshooting tips are given below :
SYMPTOMS POSSIBLE CAUSES REMEDIAL ACTION
• No power supply.
• Fuses blown or automatic circuit breakdown open.
• Defective contactor or coil.
• Unit is stopped because safety device has
tripped.
• Loose wires.
• Compressor faulty.
• No power supply.
• Fan motor faulty.
• Thermostat setting too high.
• Condenser coil dirty.
• Obstacle blocking air inlet or outlet of the
unit.
• Insufficient refrigerant in the system.
• Improper water flow rate.
• Water in the system is contaminated.
• No water in the system.
• Low water level in the system.
• Check power supply.
• Look for short circuit or grounded wires in
motor windings. Replace fuses and reset
circuit breakers when the fault has been
corrected. Check tightness and soundness of
all electrical connections.
• Repair or replace.
• Determine the type of safety shut down and
correct the default before the unit is restarted.
• Check wire connections and tighten terminal
screws.
• Contact local dealer.
• Check power supply.
• Contact local dealer.
• Reset thermostat.
• Contact local dealer.
• Remove the obstacle.
• Contact local dealer.
• Contact local dealer.
• Contact local dealer.
• Check water supply.
• Check water supply.
!!
!!
! CAUTION
• Troubleshooting must be performed by qualified personnel.
!!
!!
! CAUTION
• Do not attempt to do any service or maintenance when the unit is operating.
• Do not spray any chemical agents or flammable agents to the unit. It could cause fire or explosion.
Under normal circumstances, these chillers required only a check and cleaning of air intake through the coil surface. These
can be done monthly or quarterly depending on the surrounding where the units are installed.
When the surrounding is very oily or dusty, then the coils must be regularly cleaned by a qualified air condition service
technician to ensure sufficient cooling capacity and efficient unit operation. The normal life span might be shortened if no
proper service is provided.
• Maintenance
For consistent performance and durability, always conduct proper and regular maintenance to the unit.
For prolong period of operation time, the heat exchanger will become dirty impairing its effectiveness and reducing the
performance of the units. Consult your local dealer about the cleaning of the heat exchanger.
No major maintenance or servicing is needed for the internal water circuit in the unit except the water pump failure. It is
advisable to conduct regular check on the filter and change the water filter if it is dirty or choked.
Always check the water level in the system in order to protect the moving components in the hydraulic kit from over heating
and excessive wear.
1-15
Figure 9
4AC/AC40/50/60 C/CR
Remove this wire
when doing
wiring for fan
speed controller
Wiring for fan
speed controller
(FSC)
FSC
OF IN
OF OUT
TB3
TB3
OF IN OF OUT
TO (PCB)
OUT_FAN1
TO (A) OF_1
CAPACITOR
Power supply 400V / 3Ph-N / 50Hz
L1 N
TB1
R
S
TN
L2
L3
ISOLATOR SWITCH FIELD INSTALLATION
The isolator switch does not come as standard item with the units. It is advisable to have it field installed. The isolator switch must
be capable of making, carrying and breaking currents under normal circuit condition. It must be of AC23A duty and fully compliant
to IEC: 947-3.
For isolator switch selection, check the starting and running consumption specified in Table B. Be sure to connect a ground wire
from incoming power supply, either direct to the terminal box panel or use an auxiliary ground terminal in the isolator switch. To
install an isolator switch, wire it to the terminal block as shown in the two figures in page ix.
Operation of the mini chillers without any fan speed control is limited to an ambient temperature
of 17°C. With the fan speed control, the units are able to operate down to -5°C.
The fan speed controller does not come as a standard item in the mini chiller units. It is fieldinstalled.
All mini chillers will have a 1/4" access valve provided for along the liquid line of the refrigerant
circuit. This valve is for direct pressure connection to the fan speed controller.
To install the fan speed controller, screw in the female adaptor to the 1/4" access valve. Use a
pair of spanners to tighten properly (max. torque 15 Nm). See Fig. 8. Ensure there is no leakage
at the joint.
Wire the fan speed controller to the terminal blocks. See Fig. 9.
FAN SPEED CONTROLLER (OPTIONAL)
TB3
Power supply 230V / 1Ph-N / 50Hz
Remove this wire
when doing wiring
for fan speed
controller
Figure 8
OF IN OF OUT
OF IN
OF OUT
Wiring for fan
speed controller
(FSC)
FSC
TB3
TO (PCB)
OUT_FAN1
TO (A) OF
CAPACITOR
L1 N
TB1
L/L1 N/L2
4AC/AC20/25/30 C/CR
15 Nm
English
Le présent manuel fournit les procédures d’installation pour assurer le bon fonctionnement et la sécurité du
refroidisseur.
Des ajustements spésifiques peuvent être nécessaires pour se conformer aux réglementations locales.
Avant d’employer le refroidisseur, lisez attentivement ce manuel, et conservez-le pour consultation future.
MANUEL D’INSTALLATION
REFROIDISSEUR À AIR
MODÈLE
FROID SEUL
R22
AC20C / MAC020C
AC25C / MAC025C
AC30C / MAC030C
AC40C / MAC040C
AC50C / MAC050C
AC60C / MAC060C
R407C
4AC20C / M4AC020C
4AC25C / M4AC025C
4AC30C / M4AC030C
4AC40C / M4AC040C
4AC50C / M4AC050C
4AC60C / M4AC060C
POMPE À CHALEUR
R22
AC20CR / MAC020CR
AC25CR / MAC025CR
AC30CR / MAC030CR
AC40CR / MAC040CR
AC50CR / MAC050CR
AC60CR / MAC060CR
R407C
4AC20CR / M4AC020CR
4AC25CR / M4AC025CR
4AC30CR / M4AC030CR
4AC40CR / M4AC040CR
4AC50CR / M4AC050CR
4AC60CR / M4AC060CR
!!
!!
! ATTENTION
• L’installation et la maintenance doivent être exécutées par une personne qualifiée qui est familiarisée avec les lois
et réglementations en vigueur, et aussi expérimentée dans ce type d’équipements.
Part No.: A08019025453
IM-ACC1&2-0703 (1)-McQuay
2-1
- Sections Des Cables Et Fusibles De Protection page 8
- Montage des Conduites d’Eau page 11
- Circuit Frigori Fique page 11
- Précautions Spéciales Pour les Appareils Au R407C page 11
- Unité de Contrôle des Opérations page 12
- Entretien et Maintenance page 13
- Recherche Et Anlyse Des Pannes page 14
- Contrôle de la Vitesse du Ventilateur (en Option) page 15
-
Installation sur Place d’un Interrupteur d’Isolement
page 15
!!
!!
! AVERTISSEMENT
Lors de l’installation, vérifier soigneusement les points suivants.
• Ne pas installer dans des endroits où il y a risque de fuites de gaz.
Danger d’incendie en cas de fuite ou de concentration de gaz à proximité du conditionneur.
• Ne pas surcharger le conditionneur.
L’appareil est pré-chargé en usine. Toute surcharge provoquerait une surintensité et des dommages au
compresseur.
• Les angles pointus et la surface des ailettes en aluminium du condenseur peuvent être
dangeureux et provoquer des accidents. Evitez tout contact avec ce type d’endroits.
SOMMAIRE
- Disposition et Dimensions page i-ii
- Schéma de Câblage Électrique page iii-viii
- Schéma de Sectionnement page ix-x
- Transport page 1
- Sélection de l’Emplacement page 2
- Installation de l’unité page 4
- Données Physiques page 5
- Circuit Hydraulique page 7
- Equipement Electrique et Câblage page 7
- Données Électriques page 8
TRANSPORT
• Soulever l’unité avec un palonnier ou un chariot à fourche pour éviter d’endommager les panneaux. La figure 1 indique les
dimensions de la pallette pour le levage. Éviter les mouvements brusques. Ne pas retirer la pallette avant d’atteindre
l’emplacement final.
Au besoin, utiliser une grue pour soulever une unité de plus de 11kW. Vérifier que les élingues sont assez fortes pour
soutenir l’unité. Consulter le manuel technique pour en connaître le poids.
S’assurer que les élingues ne touchent ni la batterie du condenseur, ni le panneau supérieur, ni le panneau avant. Utiliser
une ferrure de levage (fournie avec le présent manuel) comme indiqué dans la figure 2. Soulever légèrement l’unité pour
vérifier qu’elle est en équilibre avant de la mettre en place. Ne jamais balancer ou rouler l’unité.
Figure 1
577
550