McQuay MDB075B User manual

MDB - 2004
Ducted Split Systems
Models: MDB 075-750B
 MDB 125-150C
 MDB 075-500BR
 MDB 125CR

1
Contents
Nomenclature System ..................................................................................................... 2
Features ............................................................................................................................ 2
General Specifications .....................................................................................................3
Specifications.....................................................................................................................6
Performance Characteristics ......................................................................................... 19
Power Table......................................................................................................................32
Drive Package Selection Example................................................................................. 35
Blower Performance Curves ......................................................................................... 37
Outlines And Dimensions (Indoor) ............................................................................... 52
Outlines And Dimensions (Outdoor) ............................................................................ 58
Wiring Diagrams (Cooling)............................................................................................ 61
Wiring Diagrams (Heatpump)........................................................................................ 71
Refrigerant Circuit Diagram ........................................................................................... 83
Installation (Indoor) ........................................................................................................ 89
Installation (Outdoor) ..................................................................................................... 90
Servicing And Maintenance .......................................................................................... 97
Operation ........................................................................................................................ 98
Troubleshooting .......................................................................................................... 101
Part List.......................................................................................................................... 105
Note : Installation and maintenance are to be performed only by qualified personnel who are
familiar with local codes and regulations, and experienced with this type of equipment.
Caution: Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.
Warning : Moving machinery and electrical power hazard. May cause severe personal
injury or death. Disconnect and lock off power before servicing equipment.
"McQuay" is a registered trademark of McQuay International. All rights reserved throughout the world.
2003 McQuay International
"Bulletin illustrations cover the general appearance of McQuay International products at the time of publication
and we reserve the right to make changes in design and construction at any time without notice."

2
Nomenclature System
MDB 150 B2
BRAND STATIC BLOWER 150,000 BTU/HR GENERATION NUMBER OF
REFRIGERANT
CIRCUIT
Features
Easy Maintenance
The simple design concept has maintenance and servicing in mind. Access to the internal part of the unit can be from
either side of the unit by loosening a few screws.
Only for model MDB 075B and 100B
with additional servicing panel from bottom
Flexibility In Installation
MDB 075B - MDB 150B models come with standard horizontal air discharge whereas MDB 200B - ADB 750B models
come with standard vertical air discharge. However, the range from MDB 125B - MDB 750B are designed to cater for
either horizontal or vertical air discharge application.
Versatility
Multiple rooms can be cooled together at the same time by using just one unit of fan coil unit.
Fresh Air For Healthy Living
Fresh air can be introduced into the building through the design of fresh air intakes. This will help to improve the indoor
air quality.
Superior Air Distribution For Comfortable Living
The conditioned air can be effectively distributed to every corner of the room through the ducting and this ensure a more
pleasant environment for comfort living.
Flexibility Of Air Supply
McQuay MDB series using belt driven fan such as that the air volume and static required can be adjusted according to
the requirement. This flexibility allow for wider application.

3
General Specifications
Unit
The casing is constructed with electro-galvanised mild steel sheet which provides a rigid cabinet. The
internal components are easily accessible by removing the front panel. The finishing of the casing is a
long-lasting epoxy polyester powder coating.
Condenser Coil
Each coil consists of staggered rows of 3/8" OD seamless copper tubes, mechanically expanded into
die-formed corrugated aluminium fins. Each coil provided with integral sub-cooling circuit to maximize energy
efficiency and promote superior match-system operating performance when connected to suitably sized DX
Evaporator-blower unit. Coils are leak and pressure tested to 450 psig, evacuated and dehydrated.
Condenser Fan And Motor
The outdoor propeller fan is constructed from aluminium material and direct-driven by weatherproof three
phase induction motor. Fan motor has class F insulation (155°C). Fan is protected with steel guard.
Compressor
High efficiency, refrigerant-cooled, reciprocating/scroll hermetic compressor has internal suspension system
to eliminate noise, vibration and further resiliently isolated from unit base. Compressor has internal overload
protection. Units are provided with auto reset high-low pressure cut-outs and crankcase heater for off-cycle
operation to guard against compressor valve plate damage during start-up.
Safety Controls
Manual/Auto reset high pressure and low pressure cut-outs to guard against compressor damage due to
high discharge head pressure and system leakage respectively. Crankcase heater for each compressor to
prevent liquid migration, which can damage compressor valve plates, during off-cycle and eases start-up.
Sequential Controller Functions
(Standard for cooling and heatpump models and optional for cooling only units)
1. Sequential controller LCD display
A : Time display
B : Error indication
C : Compressor running display (up to 4
compressors)
D : Key lock display
E : Heater display (up to 2 heaters)
F: Energy saving mode display
G : Compressor defrost cycle display (up to
4 compressors)
H : Operation mode display
I : Temperature set display

4
2. OPERATING GUIDE
2.1 ON/OFF key
Press once to start the air conditioning unit.
Press again to stop the unit.
The operation lamp next to the key lights up and goes off respectively when the unit is running
or not running.
Caution : In the case when the ON/OFF key is pressed immediately after the operation is
stopped, the unit will not restart until 3 minutes later to protect the compressor.
2.2 Selecting Operation Mode
Press the MODE key to select the type of operating mode. Consecutive press of the key switches the
operation over "COOL", "HEAT", "AUTO" and "FAN"
2.3 SAVE Mode
Press the SAVE key to select the energy saving function. This option is only available for "COOL",
"HEAT" and "AUTO" modes.
2.4 Auxiliary Electric Heater
If the "HEAT" mode provides insufficient heating to a room even at the highest temperature setting
(30°C), press the HEATER key to activate the auxiliary electric heater. For models with two heaters,
consecutive press of the key allows the selection of one or both heaters active.
2.5 Temperature Setting
To set the desired room temperature, press or to increase or decrease the set
temperature in the range of 16°C to 30°C.
Press both and simultaneously to toggle between °C and °F setting.
2.6 Time Setting
Real time Clock
Press the CLOCK key once to activate set clock mode.
Press again to disable set clock mode.
Under set clock mode, the time of the present day can be set by pressing the respective MINUTE,
HOUR and DAY key.
7-days timer
Press the ON TIMER key to activate auto-ON timer mode. Under this mode, press the respective
MINUTE, HOUR and DAY key to select the time of the week when the air-conditioning unit is to
automatically start running. Press the ON TIMER key again to save the setting.
Press the OFF TIMER key to activate auto-OFF timer mode. Under this mode, press the respective
MINUTE, HOUR and DAY key to select the time of the week when the air-conditioning unit is to
automatically stop running. Press the ON TIMER key again to save the setting.
Then to activate the 7-days timer, press and hold the TIMER ACTIVE key until the word "TIMER
ACTIVE" appears on the LCD screen. Repeat the same step to disable the 7-days timer.
2.7 Other Function
Key Lock
Press the MINUTE key 3 times consecutively to activate the key lock. A "KEY LOCK" symbol will
appear on the LCD screen. At this point, only the ON/OFF key is valid.
To disable the key lock, again press the MINUTE key 3 times consecutively.
Test run
Press the TEST key 2 times consecutively to test run the unit.
3. ERROR CODE
When the system is on and an error occurs, the ON/OFF LED on the LCD panel will blink and an error
code is shown. When the system is off and there is a thermistor error, the ON/OFF LED is off but the
error code is still displayed. Each error code represents different message as below

5
4. INSTALLATION OF LCD REMOTE CONTROLLER
4.1Accessories
The following accessories are included. If any part is missing, contact your dealer immediately.
1Remote controller
2Wooden screw 4.1 x 16 (2 pieces)
3Instruction manual
4.2 Step-by-step guide
i) First, open up the casing of the LCD remote controller into its top and bottom case using a
screwdriver. To do this, insert the screwdriver into the lower slot and slide it in the outward direction.
ii) Fix the bottom case onto the wall with the 2 wooden screws provided. Then, insert the 4 connecting
wires (from the main board) through the slot on the lower right.
iii) Connect one end in each of the 4 wires to the terminal block behind the top case as shown below.
The wire that goes into the "GND" terminal at the top case must be connected at the other end to the
“GND" terminal at the main board. The same goes for the "+5V", "B" and "A" connection.
iv) Fasten back the top and bottom case into place. Hook the two upper claws into their respective slots
and snap the lower part shut.
5. AUTO RANDOM RESTART
When power resumed, the unit will automatically restart and operate at the previous setting as before power
failure occurred. (Remove jumper at JH/JP1 will cancel the auto random restart function. Please refer to
wiring diagram for the location of the JH/JP1).
Error
code Possible fault Error code Possible fault
E01 Require manual reset (possible causes) E19 Indoor coil sensor 4 short
E02 Compressor 1 high temperature (overload) E20 Indoor coil sensor 1 open
E03 Compressor 2 high temperature(overload) E21 Indoor coil sensor 2 open
E04 Compressor 3 high temperature(overload) E22 Indoor coil sensor 3 open
E05 Compressor 4 high temperature(overload) E23 Indoor coil sensor 4 open
E06 Compressor 1 high pressure trip / contact open E24 Outdoor coil sensor 1 short
E07 Compressor 2 high pressure trip / contact open E25 Outdoor coil sensor 2 short
E08 Compressor 3 high pressure trip / contact open E26 Outdoor coil sensor 3 short
E09 Compressor 4 high pressure trip / contact open E27 Outdoor coil sensor 4 short
E10 Compressor 1 trip / low R-22 / outdoor abnormal E28 Outdoor coil sensor 1 open
E11 Compressor 2 trip / low R-22 / outdoor abnormal E29 Outdoor coil sensor 2 open
E12 Compressor 3 trip / low R-22 / outdoor abnormal E30 Outdoor coil sensor 3 open
E13 Compressor 4 trip / low R-22 / outdoor abnormal E31 Outdoor coil sensor 4 open
E14 Room sensor short E32 Compressor 1 de-ice
E15 Room sensor open E33 Compressor 2 de-ice
E16 Indoor coil sensor 1 short E34 Compressor 3 de-ice
E17 Indoor coil sensor 2 short E35 Compressor 4 de-ice
E18 Indoor coil sensor 3 short

6
Specifications
Cooling only
NOTES :
1.ALL UNITS ARE BEING TESTED AND COMPLY TO ARI210/240-94.
2.NOMINAL COOLING CAPACITIES ARE BASED ON THE FOLLOWING CONDITIONS. INDOOR 26.7 °CDB, 19.4 °CWB, OUTDOOR 35 °CDB.
3.ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY MANUFACTURER WITHOUT PRIOR NOTICE.
MODEL INDOOR UNIT
OUTDOOR UNIT MMC075B MMC075C MMC100B MMC100C
TOTAL OUTDOOR Btu/h
COOLING 35 °CDB kcal/h
CAPACITY W
MATERIAL
CASING FINISHING
INSULATION
HEIGHT (H)
mm (in)
DIMENSION WIDTH (W) mm (in)
DEPTH (D)
mm (in)
NET WEIGHT
kg (lb)
NOISE LEVEL (SOUND POWER) dBA
EVAPORATOR COIL
TYPE
MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
ROWS
FIN PER INCH
CAPACITY STEP %
FACE AREA
m
2
(ft
2
)
FACE VELOCITY m/min (FPM)
EVAPORATOR BLOWER
TYPE / DRIVE
BLOWER MATERIAL
QUANTITY
BLOWER DIAMETER mm (in)
BLOWER LENGTH mm (in)
AIR FLOW CMM (CFM)
EXTERNAL STATIC PRESSURE mm wg (in wg)
EVAPORATOR BLOWER MOTOR
TYPE
POWER SUPPLY V / Ph / Hz
NUMBER x RATED RUNNING CURRENT A
NUMBER x RATED OUTPUT W
NUMBER x RATED INPUT W
MOTOR POLES
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
CONTROL
PIPE CONNECTION
PIPE SIZE LIQUID mm (in)
GAS mm (in)
DRAIN PIPE CONNECTION mm (in)
AIR FILTER
TYPE
SIZE LENGTH x HEIGHT mm
DEPTH mm (in)
QUANTITY
MDB075B
MDB100B
INDOOR UNIT
75,000
18,900
21,975
100,000
25,200
29,300
572 (22.51)
1,502 (59.13)
761 (29.96)
100 (220)
0.54 (5.82)
SEAMLESS COPPER
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
2 x 350
6
203.20 (8.00)
203.00 (8.00)
70.82 (2,500)
10.16 (0.40)
90.65 (3,200)
10.16 (0.40)
220 - 240 / 1 / 50
2 x 248
WASHABLE SARAN NET
BRAZING
12.70 (1/2)
25.40 (1.00)
15.88 (5/8)
28.58 (1 - 1/8)
25.40 (1.00)
2
622 x 433
12.70 (1/2)
2
622 x 433
12.70 (1/2)
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER COATING
PE
CROSS FINNED TUBES
66
71
572 (22.51)
1,502 (59.13)
761 (29.96)
96 (211)
2 x 1.70
12
12
130.75 (429)
0.54 (5.82)
167.64 (550)
100-0 100-0
0.127 (0.005)
CENTRIFUGAL / DIRECT
COLD ROLLED STEEL
PERMANENT SPLIT CAPACITOR
2 2
282.70 (11.13) 282.70 (11.13)
3 4
2 x 1.63
2 x 373
2 x 436
6
R22
NITROGEN HOLDING
THERMOSTAT EXPANSION VALVE
CASING MATERIAL
FINISHING
HEIGHT (H)
mm (in)
946 (37.24) 946 (37.24) 946 (37.24) 971 (38.23)
DIMENSION WIDTH (W) mm (in) 1,116 (43.93) 1,300 (51.18) 1,116 (43.93) 1,393 (54.84)
DEPTH (D) mm (in) 939 (36.96) 500 (19.68) 939 (36.96) 500 (19.68)
NET WEIGHT kg (lb) 162 (357) 163 (359) 193 (425) 176 (387)
NOISE LEVEL (SOUND POWER) dBA 70 70 72 75
CONDENSER COIL
TYPE MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
NUMBER x ROWS 2 x 1 1 x 2 2 x 2 1 x 3
FIN PER INCH 16 14 12 14
FACE AREA
m
2
(ft
2
)
1.76 (19.00) 1.23 (13.25) 1.76 (19.00) 1.35 (14.54)
FACE VELOCITY m/min (FPM) 112.16 (368) 138.07 (453) 112.16 (368) 146.60 (481)
CONDENSER FAN
TYPE / DRIVE
BLADE MATERIAL
QUANTITY 1111
BLADE DIAMETER mm (in) 660.40 (26) 660.40 (26) 660.40 (26) 762.00 (30)
POWER SUPPLY V / Ph / Hz 380-415/3/50 220-240/1/50 380-415/3/50 380-415/3/50
NUMBER x RATED RUNNING CURRENT A1.4 31.5 3.35
NUMBER x RATED INPUT W708 680 660 1,100
MOTOR POLES 6668
AIR FLOW CMM (CFM) 198.30 (7,000) 169.97 (6,000) 198.30 (7,000) 198.30 (7,000)
COMPRESSOR
TYPE
POWER SUPPLY V / Ph / Hz
RATED RUNNING CURRENT A13.6 13.6 16.9 16.9
RATED INPUT W6,810 6,810 9,040 9,040
MAXIMUM STARTING CURRENT A95.0 95.0 125.0 125.0
PROTECTION DEVICE
STAGE OF CAPACITY CONTROL
STARTER TYPE
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
SCROLL
R22
380-415/3/50
OVERLOAD PROTECTION & AUTO RESET HIGH / LOW PRESSURE SWITCH
ON / OFF
AUTO-TRANSFORMER
SEAMLESS COPPER
ALUMINIUM
0.127 (0.005)
PERMANENT SPLIT CAPACITOR / PROPELLER / DIRECT
9.52 (3/8)
0.35 (0.013)
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER
CROSS FINNED TUBES
OUTDOOR UNIT
NITROGEN HOLDING
ALUMINIUM

7
Cooling only
NOTES :
1. ALL UNITS ARE BEING TESTED AND COMPLY TO ARI210/240-94.
2. NOMINAL COOLING CAPACITIES ARE BASED ON THE FOLLOWING CONDITIONS. INDOOR 26.7 °CDB, 19.4 °CWB, OUTDOOR 35 °CDB.
3. ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY MANUFACTURER WITHOUT PRIOR NOTICE.
MODEL INDOOR UNIT MDB125B MDB125C
OUTDOOR UNIT
MMC075B x 2
MMC075C x 2
MMC075B x 2
MMC075C x 2
TOTAL OUTDOOR Btu/h 125,000 125,000
COOLING
35 °CDB
kcal/h
31,500
31,500
CAPACITY W36,625 36,625
MATERIAL
CASING FINISHING
INSULATION
HEIGHT (H)
mm (in)
885 (34.84)
736 (28.97)
DIMENSION WIDTH (W) mm (in) 1,640 (64.56) 1,640 (64.56)
DEPTH (D)
mm (in)
1,040 (40.94)
965 (37.99)
NET WEIGHT
kg (lb)
140 (308)
174 (383)
NOISE LEVEL (SOUND POWER) dBA 77 78
EVAPORATOR COIL
TYPE
MATERIAL
TUBE
WALL THICKNESS
mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
ROWS 3 4
FIN PER INCH
14
12
CAPACITY STEP %100-0 100-0
FACE AREA
m
2
(ft
2
)
1.00 (10.82)
0.79 (8.60)
FACE VELOCITY m/min (FPM)
118.26 (388)
148.73 (488)
EVAPORATOR BLOWER
TYPE / DRIVE
BLOWER MATERIAL
BLOWER DIAMETER
mm (in)
394.97 (15.55)
394.97 (15.55)
BLOWER LENGTH mm (in) 381.00 (15.00) 381.00 (15.00)
AIR FLOW
CMM (CFM)
118.98 (4,200)
118.98 (4,200)
EXTERNAL STATIC PRESSURE mm wg (in wg)
15.24 (0.60)
15.24 (0.60)
BLOWER PULLEY DIAMETER mm 1 SPZ 160 1 SPZ 160
MOTOR PULLEY DIAMETER mm
1 SPZ 80
1 SPZ 85
PULLEY TYPE B1 B1
EVAPORATOR BLOWER MOTOR
TYPE
POWER SUPPLY V / Ph / Hz
NUMBER x RATED RUNNING CURRENT
A
3.39
3.39
NUMBER x RATED OUTPUT W1,500 1,500
NUMBER x RATED INPUT
W
1,100
1,100
MOTOR POLES
4
4
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
CONTROL
PIPE CONNECTION
PIPE SIZE LIQUID mm (in) 19.05 (3/4) 15.88 (5/8)
GAS
mm (in)
28.58 (1-1/8)
31.75 (1 1/4)
DRAIN PIPE CONNECTION mm (in)
AIR FILTER
TYPE
SIZE LENGTH x HEIGHT mm 457 x 738 457 x 589
DEPTH
mm (in)
50.8 (2.00)
50.8 (2.00)
QUANTITY 3 3
INDOOR UNIT
MDB150B2 MDB150C2
MMC125B
ZINC COATED STEEL
394.97 (15.55)
381.00 (15.00)
394.97 (15.55)
381.00 (15.00)
R22
4.65
2,200
1,682
4
3.39
1,500
1,630
4
NITROGEN HOLDING
WASHABLE VILEDON
THERMOSTAT EXPANSION VALVE
BRAZING
25.40 (1.00)
12.70 (1/2)
25.40 (1.00)
15.88 (5/8)
34.92 (1-3/8)
0.127 (0.005)
CENTRIFUGAL / BELT DRIVEN
SQUIRREL CAGE INDUCTION
B1
2 SPZ 125
2 SPZ 71
B1
130.31 (4,600)
15.24 (0.60)
100-50-0
SEAMLESS COPPER
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER COATING
PE
CROSS FINNED TUBES
79 79
885 (34.84)
1,640 (64.54)
1,040 (40.94)
145 (319)
3
457 x 738
50.8 (2.00)
3
516.5 x 589
50.8 (2.00)
400 / 3 / 50
100-50-0
1.00 (10.82)
129.54 (425)
0.90 (9.80)
142.94 (469)
130.31 (4,600)
15.24 (0.60)
1 SPZ 160
1 SPZ 80
4
12
4
14
736 (28.97)
1,819 (71.61)
965 (37.99)
188 (414)
43,950
150,000
37,800
43,950
150,000
37,800
CASING
MATERIAL
FINISHING
HEIGHT (H)
mm (in)
946 (37.24)
946 (37.24)
946 (37.24)
946 (37.24)
DIMENSION WIDTH (W) mm (in)
1,116 (43.93)
1,300 (51.18)
1,116 (43.93)
1,300 (51.18)
DEPTH (D) mm (in) 939 (36.96) 500 (19.68) 939 (36.96) 500 (19.68)
NET WEIGHT kg (lb)
162 (357)
163 (359)
162 (357)
163 (359)
NOISE LEVEL (SOUND POWER) dBA 70 70 70 70
CONDENSER COIL
TYPE MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
NUMBER x ROWS
2 x 1
1 x 2
2 x 1
1 x 2
FIN PER INCH 16 14 16 14
FACE AREA
m
2
(ft
2
)
1.76 (19.00)
1.23 (13.25)
1.76 (19.00)
1.23 (13.25)
FACE VELOCITY m/min (FPM)
112.16 (368)
138.07 (453)
112.16 (368)
138.07 (453)
CONDENSER FAN
DRIVE
TYPE
BLADE MATERIAL
BLADE DIAMETER mm (in) 660.40 (26) 660.40 (26) 660.40 (26) 660.40 (26)
POWER SUPPLY V / Ph / Hz
380-415/3/50
220-240/1/50
380-415/3/50
220-240/1/50
NUMBER x RATED RUNNING CURRENT A1.40 3.00 1.40 3.00
NUMBER x RATED INPUT
W
708
680
708
680
MOTOR POLES 6 6 6 6
AIR FLOW
CMM (CFM)
198.30 (7,000)
169.97 (6,000)
198.30 (7,000)
169.97 (6,000)
COMPRESSOR
TYPE
POWER SUPPLY V / Ph / Hz
RATED RUNNING CURRENT
A
13.6
13.6
13.6
13.6
RATED INPUT W
6,810
6,810
6,810
6,810
MAXIMUM STARTING CURRENT A95.0 95.0 95.0 95.0
PROTECTION DEVICE
STAGE OF CAPACITY CONTROL
STARTER TYPE
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
OUTDOOR UNIT
946 (37.24)
PERMANENT SPLIT CAPACITOR
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER
CROSS FINNED TUBES
SEAMLESS COPPER
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
0.127 (0.005)
PROPELLER / DIRECT
SCROLL
ALUMINIUM
660.40 (26)
380-415/3/50
198.30 (7,000)
2 x 2
16
1.76 (19.00)
1,116 (43.93)
939 (36.96)
224 (493)
75
112.16 (368)
AUTO-TRANSFORMER
R22
1.43
640
6
380-415/3/50
OVERLOAD PROTECTION AND AUTO RESET HIGH / LOW PRESSURE SWITCH
ON / OFF
17.9
NITROGEN HOLDING
10,200
110.0

8
Cooling only
NOTES :
1. ALL UNITS ARE BEING TESTED AND COMPLY TO ARI210/240-94.
2. NOMINAL COOLING CAPACITIES ARE BASED ON THE FOLLOWING CONDITIONS. INDOOR 26.7 °CDB, 19.4 °CWB, OUTDOOR 35 °CDB.
3. ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY MANUFACTURER WITHOUT PRIOR NOTICE.
4. AIR FILTER IS AN OPTIONAL ITEM.
MODEL INDOOR UNIT MDB150B1 MDB150C1
OUTDOOR UNIT
MMC100B x 2
MMC100C x 2
TOTAL OUTDOOR Btu/h 150,000 150,000
COOLING
35 °CDB
kcal/h
37,800
37,800
CAPACITY W43,950 43,950
MATERIAL
CASING FINISHING
INSULATION
HEIGHT (H)
mm (in)
885 (34.84)
736 (28.97)
DIMENSION WIDTH (W) mm (in) 1,640 (64.56) 1,819 (71.61)
DEPTH (D)
mm (in)
1,040 (40.94)
965 (37.99)
NET WEIGHT
kg (lb)
145 (319)
188 (414)
NOISE LEVEL (SOUND POWER) dBA 79 79
EVAPORATOR COIL
TYPE
MATERIAL
TUBE
WALL THICKNESS
mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
ROWS 4 4
FIN PER INCH
12
14
CAPACITY STEP %100-50-0 100-50-0
FACE AREA
m
2
(ft
2
)
1.00 (10.82)
0.90 (9.80)
FACE VELOCITY m/min (FPM)
129.54 (425)
142.94 (469)
EVAPORATOR BLOWER
TYPE / DRIVE
BLOWER MATERIAL
BLOWER DIAMETER
mm (in)
394.97 (15.55)
394.97 (15.55)
BLOWER LENGTH mm (in) 381.00 (15.00) 381.00 (15.00)
AIR FLOW
CMM (CFM)
130.31(4,600)
130.31 (4,600)
EXTERNAL STATIC PRESSURE mm wg (in wg)
15.24 (0.60)
15.24 (0.60)
BLOWER PULLEY DIAMETER mm 1 SPZ 160 2 SPZ 125
MOTOR PULLEY DIAMETER mm
1 SPZ 80
2 SPZ 71
PULLEY TYPE B1 B1
EVAPORATOR BLOWER MOTOR
TYPE
POWER SUPPLY V / Ph / Hz
NUMBER x RATED RUNNING CURRENT
A
3.39
4.65
NUMBER x RATED OUTPUT W1,500 2,200
NUMBER x RATED INPUT
W
1,630
1,682
MOTOR POLES
4
4
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
CONTROL
PIPE CONNECTION
PIPE SIZE LIQUID mm (in) 15.88 (5/8) 15.88 (5/8)
GAS
mm (in)
34.92 (1-3/8)
34.92 (1-3/8)
DRAIN PIPE CONNECTION mm (in)
AIR FILTER
TYPE
SIZE LENGTH x HEIGHT mm 457 x 738 516.5 x 589
DEPTH
mm (in)
50.8 (2.00)
50.8 (2.00)
QUANTITY 3 3
INDOOR UNIT
MDB200B2 MDB250B2
MMC150C
MMC125B x 2
200,000
50,400
58,600
250,000
63,000
ZINC COATED STEEL
181.30 (6,400)
15.24 (0.60)
73,250
1,291 (50.82)
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
0.127 (0.005)
100-50-0
4
12
4
14
542 x 738
50.8 (2.00)
3
533 x 532
50.8 (2.00)
6
WASHABLE VILEDON
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER COATING
PE
945 (37.20)
100-50-0
1.20 (12.92)
150.87 (495)
1.48 (16.01)
152.40 (500)
1,894 (74.56)
980 (38.58)
180 (396)
SEAMLESS COPPER
1,866 (73.46)
1,199 (47.20)
250 (551)
85 87
CROSS FINNED TUBES
CENTRIFUGAL / BELT DRIVEN
SQUIRREL CAGE INDUCTION
B1
2 SPZ 180
2 SPZ 90
B2
226.62 (8,000)
20.32 (0.80)
2 SPZ 140
2 SPZ 80
BRAZING
NITROGEN HOLDING
25.40 (1.00)
15.88 (5/8)
28.58 (1-1/8)
15.88 (5/8)
31.75 (1 1/4)
THERMOSTAT EXPANSION VALVE
400 / 3 / 50
R22
8.00
4,000
3,370
4
6.15
3,000
2,730
4
394.97 (15.55)
381.00 (15.00)
469.90 (18.50)
459.99 (18.11)
CASING
MATERIAL
FINISHING
HEIGHT (H)
mm (in)
946 (37.24)
971.4 (38.24)
DIMENSION WIDTH (W) mm (in)
1,116 (43.93)
1,393 (54.84)
DEPTH (D) mm (in) 939 (36.96) 500 (19.68)
NET WEIGHT kg (lb)
193 (425)
176 (387)
NOISE LEVEL (SOUND POWER) dBA 72 75
CONDENSER COIL
TYPE MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
NUMBER x ROWS
2 x 2
1 x 3
FIN PER INCH 12 14
FACE AREA
m
2
(ft
2
)
1.76 (19.00)
1.35 (14.54)
FACE VELOCITY m/min (FPM)
112.16 (368)
146.60 (481)
CONDENSER FAN
DRIVE
TYPE P. SPLIT CAPACITOR INDUCTION
BLADE MATERIAL
BLADE DIAMETER mm (in) 660.40 (26) 762.00 (30)
POWER SUPPLY V / Ph / Hz
380-415/3/50
380-415/3/50
NUMBER x RATED RUNNING CURRENT A1.50 3.35
NUMBER x RATED INPUT
W
660
1,100
MOTOR POLES 6 8
AIR FLOW
CMM (CFM)
198.30 (7,000)
198.30 (7,000)
COMPRESSOR
TYPE
POWER SUPPLY V / Ph / Hz
RATED RUNNING CURRENT
A
16.9
16.9
RATED INPUT W
9,040
9,040
MAXIMUM STARTING CURRENT A125.0 125.0
PROTECTION DEVICE
STAGE OF CAPACITY CONTROL
STARTER TYPE
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED NITROGEN HOLDING
198.0
AUTO-TRANSFORMER
OUTDOOR UNIT
640
6
198.30 (7,000)
17.9
380-415/3/50
660.40 (26)
R22
10,200
110.0
4.35
3,200
6
OVERLOAD PROTECTION AND AUTO RESET HIGH / LOW PRESSURE SWITCH
ON / OFF
23.5
13,300
PROPELLER / DIRECT
SCROLL
ALUMINIUM
762.00 (30)
380-415 / 3 / 50
328.61 (11,600)
PERMANENT SPLIT CAPACITORINDUCTION
1.43
380-415/3/50
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
0.127 (0.005)
CROSS FINNED TUBES
SEAMLESS COPPER
1,116 (43.93)
939 (36.96)
224 (493)
75
1,116 (43.93)
939 (36.96)
258 (568)
77
1,041 (40.98)
946 (37.24)
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER
2 x 2
16
1.76 (19.00)
112.16 (368)
2 x 2
14
1.24 (13.38)
131.97 (433)

9
Cooling only
NOTES :
1. ALL UNITS ARE BEING TESTED AND COMPLY TO ARI210/240-94.
2. NOMINAL COOLING CAPACITIES ARE BASED ON THE FOLLOWING CONDITIONS. INDOOR 26.7 °CDB, 19.4 °CWB, OUTDOOR 35 °CDB.
3. ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY MANUFACTURER WITHOUT PRIOR NOTICE.
MODEL INDOOR UNIT MDB300B2
OUTDOOR UNIT MMC100B x 3 MMC100C x 3 MMC150C x 2 MMC100B x 1 MMC125B x 2
TOTAL OUTDOOR Btu/h 300000
COOLING 35 °CDB kcal/h 75600
CAPACITY W87900
NOMINAL TOTAL POWER W31600 31180 34460 35486 (+A) -
NOMINAL TOTAL CURRENT A59.2 61.4 59.1 64.9 (+A) -
MATERIAL
CASING FINISHING
INSULATION
HEIGHT (H)
mm (in)
1291 (50.82)
DIMENSION WIDTH (W) mm (in) 1866 (73.46)
DEPTH (D)
mm (in)
1199 (47.20)
NET WEIGHT
kg (lb)
346 (762)
NOISE LEVEL (SOUND POWER) dBA 89
EVAPORATOR COIL
TYPE
MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
ROWS 5
FIN PER INCH
12
CAPACITY STEP %100-50-0
FACE AREA
m
2
(ft
2
)
1.62 (17.50)
FACE VELOCITY m/min (FPM) 156.66 (514)
EVAPORATOR BLOWER
TYPE / DRIVE
BLOWER MATERIAL
BLOWER DIAMETER mm (in) 469.90 (18.50)
BLOWER LENGTH mm (in) 459.99 (18.11)
AIR FLOW L/s (CFM) 4248 (9000)
EXTERNAL STATIC PRESSURE (DRY COIL) mm wg (in wg) 35 (1.4)
BLOWER PULLEY DIAMETER mm 180
MOTOR PULLEY DIAMETER mm 95
PULLEY TYPE 2 SPZ
V-BELT TYPE SPZ 1700
EVAPORATOR BLOWER MOTOR
TYPE
POWER SUPPLY V / Ph / Hz
NUMBER x RATED RUNNING CURRENT A7.1
MOTOR OUTPUT W4000
NUMBER x RATED INPUT W4000
MOTOR POLES 4
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
CONTROL
PIPE CONNECTION
PIPE SIZE LIQUID mm (in)
GAS mm (in) 34.92 (1-3/8)
DRAIN PIPE CONNECTION mm (in)
AIR FILTER
TYPE
SIZE LENGTH x HEIGHT mm 533 x 532
DEPTH mm (in) 50.8 (2.00)
QUANTITY 6
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
MDB300B3
100-67-33-0 100-67-33-0
2.38 (25.62)
124.96 (410)
2 SPZ
SPZ 2360
1.62 (17.50)
156.66 (514)
459.99 (18.11)
2 SPZ
SPZ 1700
4000
5500
4000 4510
28.58 (1-1/8)
25.40 (1.00)
28.58 (1-1/8) AND 34.92 (1 3/8)
BRAZING
15.88 (5/8)
MDB350B3
300000
350000
75600 88200
87900 102550
INDOOR UNIT
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER COATING
FIBREGLASS / PE
1291 (50.82)
1546 (60.86)
1866 (73.46) 2122 (83.54)
1199 (47.20)
1199 (47.20)
346 (762)
440 (970)
89 92
CROSS FINNED TUBES
SEAMLESS COPPER
0.127 (0.005)
5 4
12
12
CENTRIFUGAL / BELT DRIVEN
ZINC COATED STEEL
469.90 (18.50)
469.90 (18.50)
459.99 (18.11)
4248 (9000)
4956 (10500)
35 (1.4)
35 (1.4)
180 250
95 125
SQUIRREL CAGE INDUCTION
400 / 3 / 50
7.1
8.4
4
R22
NITROGEN HOLDING
THERMOSTAT EXPANSION VALVE
4
WASHABLE VILEDON
533 x 532
617 x 661
50.8 (2.00) 50.8 (2.00)
6 6
CASING
MATERIAL
FINISHING
HEIGHT (H)
mm (in)
946 (37.24) 971.4 (38.24) 1041 (40.98) 946 (37.24) 946 (37.24)
DIMENSION WIDTH (W) mm (in) 1116 (43.93) 1393 (54.84) 1116 (43.93) 1116 (43.93) 1116 (43.93)
DEPTH (D) mm (in) 939 (36.96) 500 (19.68) 939 (36.96) 939 (36.96) 939 (36.96)
NET WEIGHT kg (lb) 164 (361) 178 (392) 227 (500) 164 (361) 169 (372)
NOISE LEVEL (SOUND POWER) dBA 72 75 77 72 75
CONDENSER COIL
TYPE MATERIAL
TUBE WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
MATERIAL
FIN THICKNESS mm (in)
NUMBER x ROWS 2 x 2 1 x 3 2 x 2 2 x 2 2 x 2
FIN PER INCH 12 14 14 12 16
FACE AREA
m
2
(ft
2
)
1.76 (19.00) 1.35 (14.54) 1.24 (13.38) 1.76 (19.00) 1.76 (19.00)
FACE VELOCITY m/min (FPM) 112.16 (368) 146.60 (481) 131.97 (433) 112.16 (368) 112.16 (368)
CONDENSER FAN
DRIVE
TYPE
BLADE MATERIAL
BLADE DIAMETER mm (in) 660.40 (26) 762.00 (30) 762.00 (30) 660.40 (26) 660.40 (26)
POWER SUPPLY V / Ph / Hz 380-415/3/50 380-415/3/50 380-415/3/50 380-415/3/50 380-415/3/50
NUMBER x RATED RUNNING CURRENT A1.5 2.6 3.3 1.5 1.4
NUMBER x RATED INPUT W660 950 1630 660 640
MOTOR OUTPUT W466 580 1250 466 466
MOTOR POLES 68666
AIR FLOW CMM (CFM) 198.30 (7000) 198.30 (7000) 328.61 (11600) 198.30 (7000) 198.30 (7000)
COMPRESSOR
TYPE
POWER SUPPLY V / Ph / Hz
RATED RUNNING CURRENT A15.9 15.5 22.7 15.9 18.1
RATED INPUT W8540 8110 13600 8540 10248
MAXIMUM STARTING CURRENT W125 125 198 125 110
CONTROL
MODULE
STAGE OF CAPACITY CONTROL
STARTER TYPE
REFRIGERANT
TYPE
TYPE OF GAS PRECHARGED
ON / OFF
AUTO-TRANSFORMER
R22
NITROGEN HOLDING
PROTECTION DEVICE OVERLOAD PROTECTION AND AUTO RESET OVERLOAD PROTECTION AND AUTO RESET
HIGH/LOW PRESSURE SWITCH
HIGH/LOW PRESSURE SWITCH
OUTDOOR UNIT
ELECTRO GALVANIZED MILD STEEL
EPOXY POLYESTER POWDER
CROSS FINNED TUBES
SEAMLESS COPPER
0.35 (0.013)
9.52 (3/8)
ALUMINIUM
SCROLL
380-415/3/50
0.127 (0.005)
PROPELLER / DIRECT
INDUCTION
ALUMINIUM