McQuay MDS030A User manual

page 2

MULTI-DIGITAL SCROLL UNITS

MDS030A(R)~MDS60A(R)

MDS080B(R)~MDS300B(R)

Engineered for ﬂexibility and performance.TM TM-MDS-2006

page 1

Contents

General Features ............................................................................................................. 2

Nomenclature ................................................................................................................... 4

Technical Parameter ........................................................................................................ 7

Outlines and Dimensions ............................................................................................. 11

Wiring Diagrams ............................................................................................................ 16

Installation ...................................................................................................................... 30

Troubleshooting ............................................................................................................. 41

Servicing and Maintenance .......................................................................................... 42

Note: Installation and maintenance are to be performed only by qualiﬁed personal 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 hazards. May cause severe personal injury or death.

Disconnect and lock off power before servicing equipment.

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.”

page 2

1 General Features

1.1 Wide Range and Stepless Capacity Modulation

• Wide capacity modulation range (10%-100%)

• According to changing the ralio of “loading time” and “unloading time”. MDS can modulate the capacity

steplessly.

• Lower the energy consumption and running cosl.

1.2 Accurate Temperature Control and Quick Response

• The cooling/heating capacity of the indoor units is controlled by the EXV. which ensures the low theperature

ﬂuctuation of 0.3OC.

• Stepless capacity modulation.

• Ouick response to output the capcity (40s).

Running ration of compressors %

MDS system

Inverter system

1.3 Simple, Reliable and Long Life

• The PWM valve has the longevity of 40 million times.

• Wide rage of capacity modulation makes sure the start/stop times reduces.

• Less components.

• No complicate inverter controller.

• The compress or has an excellent oil return performance, there is no need for the oil return circuit.

• Even the units run in 10% part load, the MDS system can be in good stage.

The temperature ﬂuctuation range of traditional system is ±2°C

The temperature ﬂuctuation range of MDS system is ±0.3°C

The temperature ﬂuctuation range of traditional system is ±0.5°C

The temperature ﬂuctuation range of MDS system is ±0.3°C

Temp.

Time

Temp.

Time

Total capacity of operating indoor units

System control

Environment

Solenoid valve

Digital scroll

page 3

1.4 Energy Saving

The inverter system’s capacity modulation range is from 30% to 100%, while MDS system’s capacity

modulation range is from 10% to 100%.

Quick response to the capacity modulation.

Min. power consumption is only 10% of the full load power consumption.

Compared to the inverter system, there is no power consumption of transducer.

Compared to the nominal capacity scroll system, it can save 20% energy consumption.

1.5 Flexible Combination of Indoor Units

The max. capacity of the indoor units is as 130% as the outdoor units capacity.

The outdoor units can connect different numbers of indoor units according to the outdoor units capacity.

One outdoor unit can be connected up to 48 indoor units.

Various types of indoor units are available.

There are various indoor units for option: concealed exposed, ceiling concealed, high static pressure fan coil

and ceiling exposed/ﬂoor standing.

EER

MDS systemTraditional air

conditioning system

Traditional inverter

system

1.6 Long Accessory Pipe Connection Design

Max. accessory pipe length is 15m (12HP-30HP), max. height is 50m (8HP—30HP).

Max. accessory pipe total

length (m)

Max. accessory pipe

length (m)

Height

OT IT

12-30HP 350 150 50 40

10HP 250 125 50 40

8HP 250 125 50 40

6HP 150 70 30 30

5HP 150 70 30 30

4HP 150 70 20 20

3HP 100 50 20 20

Note:

OT means the outdoor unit is above the indoor unit,

IT means the outdoor unit is below the indoor unit.

Digital

compressor

operating

Fixed

compressor

100% operating

10HP system

Load

Heavy loading Light loading

10%

100%

page 4

1.7 Space Saving

• Compared to scale size central air conditioning, MDS system is high centralized, no need for special

equipment room to save more space, and bring more beneﬁts.

1.8 Easy to Install and Simple to Maintain

Easy Installation

• MDS system is simple and reliable, and outdoor unit can be connected with several indoor units, so it is

easy for installation.

• MDS system can be installed by stages, which is good to both new projects and renovation projects.

• Compared to the chilled water system, MDS system is much simple and there is no need for expert

people to maintain it.

No Need for Special Maintenance

• It has only simple refrigerant piping system, no complex maintenance;

• Compared to the water-cooled system, MDS system is with no water system, no pipe cleaning, without

maintenance for water system control design; so MDS system is much simple and there is no need for

expert people to manage and maintain it.

Traditional central air conditioning MDS system

page 5

M CK 030 T -A M A

Power supply feature: 220V~/50Hz

Matching outdoor units: MDS series

Design alteration No

Design serial No.

Cooling capacity No.

Ceiling cassette indoor unit

McQuay

2.2 Indoor Unit: Ceiling Concealed

MCC 050 T -R -A M A

Power supply:

A: 220V~/50Hz

Matching outdoor units:

MDS series

Design serial No

(B)/(D)

Return air mode: B-rear return air plenum

D-lower return air plenum

Omitted-no return air box

Type of connecting pipe: R- right connecting pipe L-left

connecting pipe

Design serial No.

Cooling capacity No.

McQuay ceiling concealed indoor unit

2.3 Indoor Unit: Air-cooled Chilled Air Duct

M DB 050 T -A M A

Power supply feature: A is 220V~/50Hz

Matching outdoor units: MDS series

Design serial No.

Series No.

Cooling capacity No.

Air-cooled chilled air duct

McQuay

2.4 Indoor Unit: Ceiling Exposed/Floor Standing

M CM 050 T -A M A

Power supply feature: A is 220V~/50Hz

Matching outdoor units: MDS series

Design serial No.

Series No.

Cooling capacity No.

Ceiling exposed/floor standing indoor unit

McQuay

Nomenclature

2.1 Indoor Unit: Ceiling Cassette

page 6

2.7 MDS Unit

MDS 060 A R- F AA

Heat pump, omitted if cooling only unit

Power supply features: A: 220V~/50Hz

F: 380V/3N~/50Hz

Description of the products

Design serial No.

Cooling capacity No.

McQuay MDS unit

MEX Throttle Box Nomenclature:

MEX 14 2-- -SA A

Connecting pipe size

Connecting pipe mode

Design serial No.

Valve opening size No.

Unit name No.

Unit name no. MEX: McQuay throttle box (one expansion valve)

Valve opening size no. 14: Nominal diameter value (mm)*10

Connecting pipe size 2: 1/4 inch

3: 3/8 inch

4: 1/2 inch

Connecting pipe mode SA: Flare ﬁtting & nipple joint

Design serial no. A: Primary design

2.5 Electric Heater Box

HD 1.2

08-15

Heating capacity (kW)

Applicable units: T means the unit can be used in MCC "T"

series

8-15 means it can be used in MCC008/010/015T

18-30 means it can be used in MCC018/020/025/030T

40 means it can be used in MCC040T

40-50 means it can be used in MCC040/050T

60 means it can be used in MCC060T

Heating unit: P means the heating unit is PTC

Omitted means the heating unit is electric heating pipe

Electric heater box

2.6 Hot Water Heater Box

08-15

Hot water heater box

Applicable units: T means the unit can be used in MCC "T"

series

08-15 means it can be used in MCC008/010/015T

18-30 means it can be used in MCC018/020/025/030T

40-50 means it can be used in MCC040/050T

60 means it can be used in MCC060T

page 7

3 Technical Parameter

MDS030A(R)~MDS060A(R)

Model MDS030A MDS030AR MDS040A MDS040AR MDS050A MDS050AR MDS060A MDS060AR

Cooling(kW) 8.5 8.5 10.0 10.0 12.5 12.5 14.5 14.5

Heating(kW) - 9.0 - 11.5 - 13.5 - 16.5

Power 220V~/50Hz

Noise dB(A) 59 59 59 60

W×D×H(mm) 840×408×900 1058×430×1044 1058×430×1044 1058×430×1247

Weight(kg) 82 85 112 115 117 120 123 130

Power consumption in cooling(kW) 3.0 3.0 3.5 3.6 4.4 4.4 5.0 5.0

Ampere in cooling(A) 13.6 13.6 15.9 15.9 20 20 22.8 22.8

Power consumption in cooling(kW) - 2.5 - 3.4 - 4.2 - 4.2

Ampere in cooling(A) - 11.4 - 13.5 - 19 - 20.3

Refrigerant R22

Connecting Gas Flare ﬁtting and nipple joint connecting

Liquid Flare ﬁtting and nipple joint connecting

LiquidΦ(mm(in)) 9.52(3/8) 9.52(3/8) 9.52(3/8) 9.52(3/8)

GasΦ(mm(in)) 15.88(5/8) 19.05(3/4) 19.05(3/4) 19.05(3/4)

Model MDS050A MDS050AR MDS060A MDS060AR

Cooling(kW) 12.5 12.5 15 15

Heating(kW) - 13.5 - 17

Power 380V/3N~/50Hz

Noise dB(A) 59 60

W×D×H(mm) 1058×430×1044 1058×430×1247

Weight(kg) 117 120 123 130

Power consumption in cooling(kW) 4.4 4.4 5.0 5.0

Ampere in cooling(A) 8.4 8.4 9.6 9.6

Power consumption in cooling(kW) - 4.2 - 4.23

Ampere in cooling(A) - 8.0 - 8.8

Refrigerant R22

Connecting Gas Flare ﬁtting and nipple joint connecting

Liquid Flare ﬁtting and nipple joint connecting

LiquidΦ(mm(in)) 9.52(3/8)

GasΦ(mm(in)) 19.05(3/4)

MDS080B(R)~MDS300B(R)

Model MDS080B MDS080BR MDS100B MDS100BR MDS120B MDS120BR MDS150B MDS150BR

Cooling(kW) 24.5 24.5 28.0 28.0 32.5 32.5 40.0 40.0

Heating(kW) - 26.0 - 30.0 - 34.0 - 43.0

Power 380V/3N~/50Hz

Noise dB(A) 62 64 66 67

W×D×H(mm) 990×840×1840 1290×840×1840

Weight(kg) 275 290 285 300 290 305 355 370

Power consumption in cooling(kW) 7.5 7.5 8.5 8.5 9.8 9.8 12.9 12.9

Ampere in cooling (A) 14.6 14.6 16.8 16.8 18.8 18.8 23.1 23.1

Power consumption in cooling(kW) - 7.2 - 8.3 - 9.0 - 11.1

Ampere in cooling (A) - 13.6 - 15.7 - 16.7 - 22.6

Refrigerant R22

Connecting Gas Welding ﬂange

Liquid Expanded copper tube

LiquidΦ(mm(in)) 12.7(1/2) 15.88(5/8)

GasΦ(mm(in)) 28.6(1 1/8) 34.9(1 3/8)

Max. indoors-quantity 13 16 16 20

page 8

Model MDS180B MDS180BR MDS200B MDS200BR MDS220B MDS220BR MDS240B MDS240BR

Cooling(kW) 47.5 47.5 50.0 50.0 55.0 55.0 65.0 65.0

Heating(kW) - 50.0 - 53.0 - 58.0 - 68.0

Power 380V/3N~/50Hz

Noise dB(A) 66 66 66 68

W×D×H(mm) 1990×840×1840

Weight (kg) 520 550 560 590 560 590 570 600

Power consumption in cooling(kW) 14.1 14.1 15.2 15.2 16.7 16.7 19.8 19.8

Ampere in cooling (A) 28.2 28.2 31.1 31.1 32.7 32.7 38.5 38.5

Power consumption in cooling(kW) - 13.2 - 14.7 - 16.2 - 18.5

Ampere in cooling(A) - 27.1 - 29.4 - 31.0 - 33.8

Refrigerant R22

Connecting Gas Welding ﬂange

Liquid Expanded copper tube

LiquidΦ(mm(in)) 15.88(5/8) 19.05(3/4)

GasΦ(mm(in)) 34.9(1 3/8) 38.1(1 1/2)

Max. indoors-quantity 24 24 24 24

Model MDS260B MDS260BR MDS280B MDS280BR MDS300B MDS300BR

Cooling(kW) 70.0 70.0 75.0 75.0 80.0 80.0

Heating(kW) - 75.0 - 80.0 - 85.0

Power 380V/3N~/50Hz

Noise dB(A) 68 69 69

W×D×H(mm) 2280×840×1840 2580×840×1840

Weight(kg) 645 675 710 740 710 740

Power consumption in cooling(kW) 21.3 21.3 22.8 22.8 26.2 26.2

Ampere in cooling(A) 40.0 40.0 42.5 42.5 46.5 46.5

Power consumption in cooling(kW) - 20.9 - 22.0 - 23.6

Ampere in cooling(A) - 37.2 - 41.0 - 43.1

Refrigerant R22

Connecting Gas Welding ﬂange

Liquid Expanded copper tube

LiquidΦ(mm(in)) 19.05(3/4)

GasΦ(mm(in)) 41.3(1 5/8)

Max. indoors-quantity 32 32 32

Notes:

1. Cooling condition: Indoor D/W bulb Temp. 27/19ºC, outdoor temperature: D/W bulb Temp. 35/24ºC.

2. Heating condition: Indoor D/W bulb Temp. 20/15ºC, outdoor temperature: D/W bulb Temp. 7/6ºC.

Ceiling Concealed Indoor Units

Model MCC008T MCC010T MCC015T MCC018T MCC020T

Cooling capacity(W) 2000 2500 3650 4500 5600

Heating capacity(W) 2200 2600 3700 4700 6100

Power 220V~/50Hz

Noise dB(A) 31 34 35

W×D×H(mm) 1030×469×220 1290×490×250

Weight(kg) 22 25

Power input(W) 47 81 82

Fan number 2

Air ﬂow(H: m³/h) 450 580 800

ESP(Pa) 15(0/30/50)

DrainΦ(mm(in)) 19.05(3/4)

Protection Anti-freezing

Connection Gas Expanded copper tube

Liquid Expanded copper tube

LiquidΦ(mm(in)) 6.35(1/4) 9.52(3/8)

GasΦ(mm(in)) 9.52(3/8) 12.7(1/2) 15.88(5/8)

page 9

Model MCC025T MCC030T MCC040T MCC050T MCC060T

Cooling capacity(W) 6500 7800 10600 12400 14400

Heating capacity(W) 7400 8900 11600 14500 17300

Power 220V~/50Hz

Noise dB(A) 37 42 47 48

W×D×H(mm) 1290×490×250 1640×490×250 1900×490×250

Weight(kg) 27 28 39 45

Power input(W) 123 158 276 280

Fan number 2 3 4

Air ﬂow(H : m³/h) 960 1200 1900 2100

ESP(Pa) 15(0/30/50) 30(15/50/70) 50(15/30/70)

DrainΦ(mm(in)) 19.05(3/4”)

Protection Anti-freezing

Connection Gas Expanded copper tube

Liquid Expanded copper tube

LiquidΦ(mm(in)) 9.52(3/8”)

GasΦ(mm(in)) 15.88(5/8”) 19.05(3/4”)

Notes:

1. Cooling condition: Indoor D/W bulb Temp. 27/19ºC, outdoor temperature: D/W bulb Temp. 35/24ºC.

2. Heating condition: Indoor D/W bulb Temp. 20/15ºC, outdoor temperature: D/W bulb Temp. 7/6ºC.

Ceiling Duct Indoor Unit

Model MDB050T MDB060T

Cooling capacity(W) 12500 14000

Heating capacity(W) 14000 15500

Power 220V~/50Hz

Noise dB(A) 58 60

W×D×H(mm) 1230×910×350 1430×910×350

Weight(kg) 69 75

Power consumption(W) 615 790

Fan number 1

Air ﬂow(H m³/h) 2250 3000

ESP(Pa) 100

DrainΦ(mm(in)) 19.05(3/4)

Protection Anti-freezing, overload

Connection Gas Expanded copper tube

Liquid Expanded copper tube

LiquidΦ(mm(in)) 9.52(3/8)

GasΦ(mm(in)) 19.05(3/4)

Notes:

1. Cooling condition: Indoor D/W bulb Temp. 27/19ºC, outdoor temperature: D/W bulb Temp. 35/24ºC.

2. Heating condition: Indoor D/W bulb Temp. 20/15ºC, outdoor temperature: D/W bulb Temp. 7/6ºC.

Vertical Floor Standing & Horizontal Ceiling Mounted Indoor Unit

Model MCM020T MCM030T MCM050T

Cooling capacity(W) 5800 7500 12500

Heating capacity(W) 5800 8000 13500

Power 220V~/50Hz

Noise dB(A) 48 50 52

W×D×H(mm) 1214×670×214 1214×670×249 1714×670×249

Weight(kg) 39 44 44

Power consumption(W) 81 116 161

Number of fan 2 3 4

Air ﬂow(H m³/h) 1100 1300 1850

DrainΦ(mm(in)) 20.5(4/5)

Protection Anti-freezing, overheat

Connection Gas Expanded copper tube

Liquid Expanded copper tube

LiquidΦ(mm(in)) 9.52(3/8) 9.52(3/8)

GasΦ(mm(in)) 15.88(5/8) 19.05(3/4)

Notes:

1. Cooling condition: Indoor D/W bulb Temp. 27/19ºC, outdoor temperature: D/W bulb Temp. 35/24ºC.

2. Heating condition: Indoor D/W bulb Temp. 20/15ºC, outdoor temperature: D/W bulb Temp. 7/6ºC.

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