This document provides specifications for McQuay rooftop packaged air conditioners and heat pumps. It includes models from MRT 060A/AR to MRT 420A/AR. The units feature high efficiency scroll compressors, pre-connected piping for easy installation, adjustable air volume capability, and a flat top design for maximum space utilization. Electrical controls include an electronic remote controller. Specifications are provided for cooling capacity, power consumption, dimensions, components, and operating conditions.

1. MRT - 2009
Rooftop Packaged
Air Conditioners
Models: MRT 060A/AR
MRT 080A/AR
MRT 100A/AR
MRT 120A/AR
MRT 150A/AR
MRT 200A/AR
MRT 250A/AR
MRT 300A/AR
MRT 420A/AR

2. FeaturesFeaturesFeaturesFeaturesFeatures
High efficiencyHigh efficiencyHigh efficiencyHigh efficiencyHigh efficiency
The McQuay rooftop unit is supplied with high efficiency and reliable scroll compressor.
Package unitPackage unitPackage unitPackage unitPackage unit
Dubbed the “Plug and Play” equivalent in the air-conditioning industry, the single unit configuration allows
hassle free installation. No additional piping work is required as both the indoor and outdoor sides are pre-
connected. Refrigerant is factory pre-charged to ensure clean and efficient operation.
Flexibility of air supplyFlexibility of air supplyFlexibility of air supplyFlexibility of air supplyFlexibility of air supply
McQuay rooftop unit uses a belt driven fan such that the air volume and static required can be adjusted according
to the requirement. This flexibility allows for wider application.
Flat top designFlat top designFlat top designFlat top designFlat top design
McQuay rooftop unit’s flat top design allows for maximum utilization of warehouse and container space.
Electrical control capabilityElectrical control capabilityElectrical control capabilityElectrical control capabilityElectrical control capability
All series are equipped with our Electronic Remote Controller (SLM and Sequential LCD). The Sequential LCD
features 7 days programmable timer, compressor run/error status, cool/heat/fan/dry/auto modes, etc, while the
SLM features a 15 hour delay timer, cool/heat/fan/dry/auto modes, etc.
Part loading of system capacity is now possible with the use of our Sequential PAC (Package Air-Condition)
control for multiple compressor McQuay rooftop units.
3

3. SpecificationsSpecificationsSpecificationsSpecificationsSpecifications
Cooling Only (R22)
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
RATED TOTAL POWER CONSUMPTION W
RATED RUNNING CURRENT A
POWER SOURCE V/Ph/Hz
CAPACITY STEPS %
REFRIGERANT
REFRIGERANT CHARGE kg
REFRIGERANT CONTROL
MATERIAL
THICKNESS mm/in
ROW / FIN PER INCH
FACE AREA m2
/ft2
MATERIAL
WALL THICKNESS mm(in)
DIAMETER mm(in)
kW
CMM
CFM
L/S
mmAq
Pa
CMM
CFM
L/S
CONTROL
mm/in
HEIGHT mm/in
WIDTH mm/in
DEPTH mm/in
kg
AIR FILTER
POWER SOURCE V/Ph/Hz
COMPRESSOR NO / TYPE
RATED RUNNING CURRENT A
RATED INPUT POWER W
LOCK ROTOR AMPERE A
SOUND PRESSURE LEVEL dBA
MATERIAL
EXTERNAL FINISHING
INSULATION
COLOUR
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
MRT120A
FIN
TUBE
EVAPORATOR
MRT100AMODEL MRT060A MRT080A
FAN MOTOR
AIR FLOW
NO OF FAN MOTOR / RATED OUTPUT
EXTERNAL STATIC PRESSURE
FAN MOTOR
CONDENDER FAN
CONDENSER
PROTECTION DEVICES
DIMENSION
NET WEIGHT
ROOM TEMPERATURE
OPERATION
CASING
TOTAL COOLING CAPACITY
SENSIBLE COOLING CAPACITY
AIR FLOW
DRAIN CONNECTION
EVAPORATOR FAN
4

4. Cooling Only (R22)
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
RATED TOTAL POWER CONSUMPTION W
RATED RUNNING CURRENT A
POWER SOURCE V/Ph/Hz
CAPACITY STEPS %
REFRIGERANT
REFRIGERANT CHARGE kg
REFRIGERANT CONTROL
MATERIAL
THICKNESS mm/in
ROW / FIN PER INCH
FACE AREA m2
/ft2
MATERIAL
WALL THICKNESS mm(in)
DIAMETER mm(in)
kW
CMM
CFM
L/S
mmAq
Pa
CMM
CFM
L/S
CONTROL
mm/in
HEIGHT mm/in
WIDTH mm/in
DEPTH mm/in
kg
AIR FILTER
POWER SOURCE V/Ph/Hz
COMPRESSOR NO / TYPE
RATED RUNNING CURRENT A
RATED INPUT POWER W
LOCK ROTOR AMPERE (COMP 1 / COMP 2) A
SOUND PRESSURE LEVEL dBA
MATERIAL
EXTERNAL FINISHING
INSULATION
COLOUR
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
TOTAL COOLING CAPACITY
SENSIBLE COOLING CAPACITY
AIR FLOW
DRAIN CONNECTION
EVAPORATOR FAN
NO OF FAN MOTOR / RATED OUTPUT
EXTERNAL STATIC PRESSURE
FAN MOTOR
CONDENDER FAN
CONDENSER
PROTECTION DEVICES
DIMENSION
NET WEIGHT
ROOM TEMPERATURE
OPERATION
CASING
FAN MOTOR
AIR FLOW
MRT300A
FIN
TUBE
EVAPORATOR
MRT250AMODEL MRT150A MRT200A
5

5. 6

6. Heatpump Model (R22)
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
RATED TOTAL POWER CONSUMPTION (COOLING) W
RATED TOTAL POWER CONSUMPTION (HEATING) W
RATED RUNNING CURRENT (COOLING) A
RATED RUNNING CURRENT (HEATING) A
POWER SOURCE V/Ph/Hz
CAPACITY STEPS %
REFRIGERANT
REFRIGERANT CHARGE kg
REFRIGERANT CONTROL
MATERIAL
THICKNESS mm/in
ROW / FIN PER INCH
FACE AREA m2
/ft2
MATERIAL
WALL THICKNESS mm(in)
DIAMETER mm(in)
kW
CMM
CFM
L/S
mmAq
Pa
CMM
CFM
L/S
CONTROL
mm/in
HEIGHT mm/in
WIDTH mm/in
DEPTH mm/in
kg
AIR FILTER
POWER SOURCE V/Ph/Hz
COMPRESSOR NO / TYPE
RATED RUNNING CURRENT (COOLING) A
RATED RUNNING CURRENT (HEATING) A
RATED INPUT POWER (COOLING) W
RATED INPUT POWER (HEATING) W
LOCK ROTOR AMPERE A
SOUND PRESSURE LEVEL dBA
MATERIAL
EXTERNAL FINISHING
INSULATION
COLOUR
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
MRT120ARMODEL MRT060AR MRT080AR
AIR FLOW
TOTAL COOLING CAPACITY
SENSIBLE COOLING CAPACITY
MRT100AR
AIR FLOW
DRAIN CONNECTION
PROTECTION DEVICES
DIMENSION
NET WEIGHT
ROOM TEMPERATURE
OPERATION
CASING
EXTERNAL STATIC PRESSURE
FAN MOTOR
CONDENSER FAN
CONDENSER
EVAPORATOR FAN
NO OF FAN MOTOR / RATED OUTPUT
TOTAL HEATING CAPACITY
FIN
TUBE
EVAPORATOR
FAN MOTOR
7

7. Heatpump Model (R22)
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
kcal/h
kW
Btu/h
RATED TOTAL POWER CONSUMPTION (COOLING) W
RATED TOTAL POWER CONSUMPTION (HEATING) W
RATED RUNNING CURRENT (COOLING) A
RATED RUNNING CURRENT (HEATING) A
POWER SOURCE V/Ph/Hz
CAPACITY STEPS %
REFRIGERANT
REFRIGERANT CHARGE kg
REFRIGERANT CONTROL
MATERIAL
THICKNESS mm/in
ROW / FIN PER INCH
FACE AREA m2
/ft2
MATERIAL
WALL THICKNESS mm(in)
DIAMETER mm(in)
kW
CMM
CFM
L/S
mmAq
Pa
CMM
CFM
L/S
CONTROL
mm/in
HEIGHT mm/in
WIDTH mm/in
DEPTH mm/in
kg
AIR FILTER
POWER SOURCE V/Ph/Hz
COMPRESSOR NO / TYPE
RATED RUNNING CURRENT (COOLING) A
RATED RUNNING CURRENT (HEATING) A
RATED INPUT POWER (COOLING) W
RATED INPUT POWER (HEATING) W
LOCK ROTOR AMPERE (COMP 1 / COMP 2) A
SOUND PRESSURE LEVEL dBA
MATERIAL
EXTERNAL FINISHING
INSULATION
COLOUR
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
EVAPORATOR FAN
NO OF FAN MOTOR / RATED OUTPUT
FAN MOTOR
EXTERNAL STATIC PRESSURE
FAN MOTOR
CONDENSER FAN
CONDENSER
TOTAL HEATING CAPACITY
FIN
TUBE
EVAPORATOR
AIR FLOW
DRAIN CONNECTION
PROTECTION DEVICES
DIMENSION
NET WEIGHT
ROOM TEMPERATURE
OPERATION
CASING
AIR FLOW
TOTAL COOLING CAPACITY
SENSIBLE COOLING CAPACITY
MRT250AR MRT300ARMODEL MRT150AR MRT200AR
8

8. SPECIFICATIONS
84419 96766
98.2 112.5
335000 384000
65846 75478
76.6 87.8
261300 299520
87695 103822
102.0 120.7
348000 412000
39210 46400
35830 40800
70.6 72.5
66.6 65.3
380 ~ 415 / 3 / 50
0 - 50 - 100
R22 (FACTORY CHARGED)
16.0, 20.5 2 X 20.5
TXV
SLIT FIN
ALUMINIUM
0.11 / 0.004
3 / 14, 4 / 13 2 X 4 / 13
3.02 / 32.5
SEAMLESS INNER GROOVED COPPER
0.33 / 0.013
9.52 (3/8)
CENTRIFUGAL (GALVANISED STEEL) -
BELT DRIVE
THREE PHASE SQUIRREL CAGE
INDUCTION MOTOR
1 / 7.5
311.49 353.96
11000 12500
5191 5899
30
294
SEAMLESS INNER GROOVED COPPER
PROPELLER - DIRECT DRIVE
THREE PHASE INDUCTION MOTOR
566.34
20000
9439
THERMISTER
SEQUENTIAL CONTROLLER
25.4 / 1
1974 / 78
2252 / 89
3180 / 125
1600
WASHABLE SARANET
380 ~ 415 / 3 / 50
2 / SCROLL
50.9 48.0
46.9 41.5
28840 32500
25460 27200
175 / 215 215 / 215
70
ELECTRO GALVANISED MILD STEEL
EPOXY POLYESTER POWDER
PE (10mm)
LIGHT GREY
2150 / 84.5
2300 / 90.5
3250 / 128.0
HIGH PRESSURE SWITCH FUSE.
OVERLOAD CURRENT RELAY
(COMPRESSOR & INDOOR FAN).
INTERNAL THERMOSTAT (COMPRESSOR
& OUTDOOR FAN).
1) ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
2) ALL UNITS ARE TESTED AND COMPLY TO ARI 210/240-94
3) NOMINAL COOLING CAPACITY IS BASED ON THE CONDITIONS BELOW :
a) COOLING - 26.7°C DB / 19.4°C WB INDOOR AND 35.0°C DB OUTDOOR
b) HEATING - 21.1 ºC DB INDOOR AND 8.3 ºC DB / 6.1 ºC WB OUTDOOR
4) CAPACITY IS GROSS CAPACITY WHICH DOES NOT INCLUDE A DEDUCTION FOR EVAPORATOR FAN MOTOR HEAT.
8a9

9. Operating RangeOperating RangeOperating RangeOperating RangeOperating Range
Ensure the operating temperature is in allowable range.
Cooling (R22)
Heat pump (R22 & R407C)
Heating
Indoor temp. (ºC DB)
Outdoortemp.(ºCWB)
-15
-10
-5
0
10 15 20 25 30
5
10
15
27
20
Outdoortemp.(ºCDB)
Indoor temp. (ºC WB)
-10
-5
0
10
20
30
40
50
10 15 20 25 30
54
24
10

10. 11

11. 12

12. 13

13. 14

14. 15

15. 16

16. 17

17. 18

18. 19

19. 20

20. 21

21. 22

22. 23

23. 24

24. 25

25. 26

26. 143
200
19905151
1231744123
Y235 235
2082
25
46
2032
1990
25
46
(2032)25
15
25
1200
42851428169124
77
X50
483
Control box
72 200 200 200 200 200 200 72200
10
3434120120120
49
10
Supply air & Return air
Duct flange
428
1744
s
Condenser
Air inlet
Return air
Supply air
Drain R 1
Detail A
4-15X25 Mtg. holes
Wiring hole
Return air
Hanger (4 places)
A
B
123 1231744
123 1231744
(2032)25
15
25
Detail B
Condenser
Air inlet
Condenser
Air inlet
Return
air
Supply
air
RT-A 1200
RT-AR
1670
1800 1330
X Y
(4)RT150,
200A only
(unit : mm)
Except : Drain size. (unit : inch)
510640
100758
3201302
165 566
2200
220025
1441912
80 2720
wiring hole
control
box
2850
1735
23
25
Condenser
air inlet
Condenser
air inlet
Condenser
air inletReturn
air
144
Return
air
Supply
air
A
1527.5
22.5
Detail A
Drain R1
Return air
duct flange
1505115015015015015015015051
10
1302
3
80 150 150 150 150 80
10
43 120
80
10
80
120 120 120 43
28-758
80120
10
8012012012080
320-
640
566
2768
1443831146383144
Supply air
duct Flange
Supply air
50
(unit : mm)
Except : Drain size. (unit : inch)
27

27. (unit : mm)
Except : Drain size. (unit : inch)
3148
28