Kaysun KRT 350 H1N, KRT 530 H2N, KRT 700 H2N, KRT 1050 H2N Rooftop unit Technical Manual

ROOFTOPS

TECHNICAL MANUAL

Contents

1. Product Lineup ................................................................................ 5

2. External Appearance ...................................................................... 5

3. Nomenclature ................................................................................. 6

4. Features ......................................................................................... 7

5. List of Functions ............................................................................ 10

6. Specifications ............................................................................... 12

7. Dimensional Drawings ................................................................. 16

8. Wiring Diagrams .......................................................................... 20

9. Performance Data ......................................................................... 24

10. Electrical Data ............................................................................ 28

11. Parameter and Pressure Chart for Air Volume ........................... 29

12. Refrigerant Cycle Diagram ......................................................... 33

13. Operation Limit ........................................................................... 34

14. Installation ................................................................................... 35

15. Wired Controller .......................................................................... 42

16. Error Code .................................................................................. 50

17. Accessories ................................................................................ 55

18. Maintenance and Upkeep .......................................................... 55

Appendix ........................................................................................... 58

※ Manufacture reserves the right to discontinue, or change at any time, specifications or designs without notices and without incurring obligations.

3

4

1. Product Lineup

Nominal Capacity

Ton

10

15

20

30

Model Name

KRT 350 H1N

KRT 530 H2N

KRT 700 H2N

KRT 1050 H2N

Model

Function

Heat pump

Heat pump

Heat pump

Heat pump

Refrigerant

R410a

Power Supply

V, Ph, Hz

380~415V,3Ph,50Hz

Note: Please refer to specification tables for accurate cooling or heating capacity with Kw or Btu/h unit.

2. External Appearance

10Ton

15&20Ton 30Ton

5

3. Nomenclature

K RT 350 H1N

Refrigerant type N: R410A

Qty. compressors / circuits

Function mode

H: Heat pump

Cooling capacity kW x10

Rooftop

Kaysun

6

4. Features

1. The adoption of anticorrosive-box

The reinforced anticorrosion by using galvanization armor plate and coated with man-composed paint.

The appearance is stylish and easy for maintenance.

(Has been passed 1000 hours salt spray test)

2. The adoption of credible protection system

2.1 The protection of compressor

High-pressure protection, low-pressure protection, compressor ’s current protection and so on.The series ’ protectors can ensure compressor operating normally.

It adopts independent system, except for protection of sequence and wired controller output, any related protection to its corresponding compressor. Once a compressor protection energized, t h e c o r r e s p o n d i n g c o m p r e s s o r w i l l s t o p , t h e o t h e r s working still.

2.2 Fan motor

The fan motors for evaporator have over-heat protection and over-current protection function. The fan motors for condenser have the temperature controller protection function.

3. Energy saving design

3.1 High efficiency compressor

Using professional compressor, heat exchanger and optimum connection pipe, the compressor can tartup under low power input. Provide maximum reliability, efficiency and quiet operation.

Two refrigerant circuits on larger units (above 12.5ton) provide efficient part load performance.

Standard low and high pressure safety switches.

Well compressor control

Compressor staging is controlled directly by the control temperature. When the control temperature is warmer than the cooling set point, cooling is staged up; when the control temperature is cooler than the cooling set point, cooling is taged down. However, a stage change can only occur when the control temperature is outside the dead band. Staging is constrained by an inter-stage delay timer.

These constraints protect the compressors from short cycling while eliminating temperature variations near the diffusers.

3.2 Condenser

By using high-efficient thin wing, the condenser has high-efficient heat exchanger, the energy waste decreases greatly.

3.3 Evaporator

By using the high-efficient, super thin wing and inner grooved copper pipe, the evaporators get the higher capacity and the lower noise level.

3.4 The heat insulation of indoor unit

The heat insulation of indoor unit can availably decrease heat loss.

3.5 The control and refrigerant cycle system

There are two independent refrigerant cycle systems; the capacity output is adjusted automatically by different demand, save energy when one control system is in running according to low capacity output.

7

4. Optional collocation

4.1 Operation in high temperature

The air-conditioner designed for high temperature operating, even when the ambient temperature reaches up to 52ºC（125℉）.

4.2 Strong air flow

Large air volume from the air inlet is forced ventilating by the condenser fan.

4.3 Minimum installation arrangement

The installation is fast and low cost with the easy installation and ready operation.

4.4 Pre-drilled duct flange

Flanges are prepared at the supply and return duct connections so that they can reduce duct connection work at site.

Flange

4.5 Quiet operation

Noise and vibration have been effectively reduced by adopting new style hermetic compressor. The centrifugal fan and fan casing are optimum shaped for efficient and low noise operation.

5. Cabinet

5.1 Sloped drain pan and drain pipe.

5.2 Cabinets have forklift and lifting holes for easy transportation.

5.3 External pressure gauge ports.

With the gauge ports mounted externally, an accurate diagnostic of system operation can be performed quickly and easily without disrupting airflow.

5.4 Durable construction.

Weather-resistant construction with capped seams and sloped top panels.

G90 galvanized heavy gauge plate conforming to ASTM-A-653, Zinc content of galvanized plate is 275 g/m

2

.

8

Electric heater assembly (optional)

Condenser fan motor

Highly efficient enhanced copper tube/Aluminum fin outdoor coil

Highly efficient enhanced copper tube / aluminum fin indoor coil

Decorative protective coil guard

Compressor contactor

Low voltage terminal block

Blower motor with slide-out blower assembly

Compressor

5to

Heavy gauge removable base rails

n

6. Optional supply/return airflow design, from side or bottom, It could be flexibly applied to

multi-position. The rooftop and ground installation are optional.

7. Certificate of compressor

The compressors have CE certified, UL certified.

9

5. List of Functions

5.1 Standard specifications

A. General

The units are convertible airflow. All units shall be factory assembled, internally wired, fully charged refrigerant and 100% run tested to check cooling and heating operation, fan and blower rotation, and control sequence before leaving the factory. Wiring internal to the unit shall be colored and numbered for simplified identification.

The unit is provided with an integral weather resistant control panel.

B. Unit enclosure

Panels are of heavy gauge, G-90 galvanized steel sheet with removable access panels, completely weatherized for outdoor installation and properly reinforced and brazed. Panels and access door are provided for inspection and access for all internal parts. Enclosures are provided with adequately reinforced points of support for setting in the unit. Steel sheet panels are zinc-coated and galvanized by the hot dip process of lock forming quality conforming to ASTMA 653 commercial weight G-90, followed by baked on electrostatic polyester dry powder coat paint, on all external panel.

C. Compressor

Compressors are scroll for all the models. They are provided with all the standard controls and accessories necessary for safe operation. These are equipped with internal motor protector; factory installed crank case heater and rubber vibration isolator for quiet and efficient operation.

D. Air-cooled condensing section

1. The air-cooled condensing section is enclosed within the unit housing and consists of condenser coil, fan(s) electric motor(s) and inherently protected compressor(s). Inner grooved copper tubes with wall thickness of

0.3mm, mechanically bonded to enhanced louvered aluminum fins are standard for all condenser coils. As an option, enhanced coated aluminum fins may be provided. Tube support sheets are galvanized steel, formed to provide structural strength.

2. Fans are propeller type, direct driven, upward discharge and provided with fan grille mounted on the casing.

3. Motors are totally enclosed air-over type with class F insulation. Inherent thermal protection is automatic reset type.

E. Evaporator coil section

1. All cooling coils are of enhanced louvered fins and inner grooved copper tubes with wall thickness of 0.3mm, mechanically bonded to aluminum fins. As option, enhanced coated aluminum fins may be provided. Tube support sheets are galvanized steel, formed to provide structural strength.

2. Drainage pan: An insulated drainage pan made of G-90 galvanized steel is provided, for additional corrosion protection.

3. Insulation: Insulation is supplied in adequate density and thickness for all units to prevent condensation from forming on the unit casing. Insulation meets the requirements of NFPA 90A and is protected against deterioration and erosion from air currents.

F. Evaporator fan

Evaporator fan is of centrifugal forward-curved blade design capable of handling total required CFM and static pressure in the low and the medium ranges. Casings are made of galvanized steel. Blower motors are of open drip proof type

(totally enclosed types are optional) and conform to NEMA MG-1 and MG-2. Blower motor is mountedon adjustable base and secured by locking device. Pillow block bearing are selected for at 200,000 hours average life at design operating conditions. Shaft is turned, ground and polished from solid steel. Fans and pulleys are keyed to shaft and designed for continuous operation at maximum motor horse power and fan speed. All rotating components and assemblies are statically and dynamically balanced and every unit is vibration tested before shipment from the factory.

10

5.2 Standard features

Description

Horizontal discharge

Compressor crankcase heaters

Evaporator fan-belt driven

Evaporator fan motor-ODP type(TEFC type optional)

Condenser fan-direct drive, propeller type(Except 5ton)

Condenser fan-direct drive, axial type(Only 5ton)

Condenser fan motor-totally enclosed air-over type

Filter, Nylon(Thickness 10&12.5mm, except 5ton)

Compressor overload protection

Low &high pressure switch

Cooling & heating thermostat

Condenser fan guard

Condenser coil guard

Wired controller KCT-02.1 SR

Standard features

◆

◆

◆

◆

◆

◆

◆

◆

◆

◆

◆

◆

◆

◆

11

6. Specifications

Nominal ton

Model

Cooling

Cooling Capacity 1

Power Input 1

Cooling Capacity 2

Heating

Power Input 2

Heating Capacity

Power Input

Capacity steps

Electrical data

Performance

Indoor Coil

Power supply

Max. input consumption

Max. current

Indoor fan air flow

ESP

EER 1

EER 2

COP

Number of rows

Fin spacing

Tube diameter

Coil length X height

Indoor fan

Compressor

Number of circuits

Type

Quantity

Diameter(Width)

Drive type

Motors quantity

Motor model

Motor output

Motor rpm

Type

Quantity

Model

Brand

Capacity

Input

Rated load Amps (RLA)

Btu/h kW kW

Btu/h kW kW

Btu/h kW kW

%

V/Ph/Hz kW

A

CFM

Pa

Btu/W.h

Btu/W.h

Btu/W.h mm

Inch mm

Inch mm

Inch mm

Inch kW r/min

Btu/h kW

A

12

10

KRT 350 H1N

120000

35

11.8

100000

29.3

13.1

126000

37

10.9

0/100

380-415/3/50

17.6

31

3800

75

10.2

7.6

11.6

3

1.4

1/18''

7.94

5/16''

1117X792

44 X31.2

18

FC centrifugal

1

305

12

Belt

1

YFD90L-4-1.5

1.5

1400

Scroll

1

SH140A4ALC

Danfoss

119000

10.862

21.4

15

KRT 530 H2N

180000

53

18.6

159600

46.7

21.3

191000

56

17.5

0/50/100

380-415/3/50

27.8

54.7

6600

90

9.7

7.5

11

3

1.4

1/18''

7.94

5/16''

1607X880

63.3X346.

10+10

FC centrifugal

1

383

15

Belt

1

YFD132S-4-5.5

5.5

1440

Scroll

2

SH105A4ALC

Danfoss

91500

8.472

16.7

Outdoor Coil

Outdoor Fan temp

Dimensions

Weight

Filter

Standard controller

Operation temp

Outdoor ambient

Locked rotor Amps(LRA)

Refrigerant oil charge

Number of rows

Fin spacing

Type

Tube diameter

Coil length X height

Number of circuits

Quantity

Diameter(Width)

Cooling

Heating

Net(W×H×D)

Packing(W×H×D)

Net weight

Gross weight

Type

Quantity

Size (W×H×D)

Drive type

Motors quantity

Motor model

Motor output

Motor rpm

Outdoor sound pressure level

Refrigerant

Type

Refrigerant volume

Refrigerant Control

A ml mm inch mm inch mm inch mm inch dB(A) kW r/min

Kg

ºC

ºC

ºC

Kg(Ibs)

Kg(Ibs)

Pieces mm mm mm

147

3300

3

1.6

1/16"

7.94

5/16"

1748X880

68.8X34.6

20

Propeller

1

700

27.6

Direct

1

YS1100-6

1.1

940

72.2

R410A

7.5

Capillary

KCT-02.1 SR

17~30

18~52

-10~24

2165X1002X1335

2220X1040X1415

450(992)

463(1020.7)

Nylon

2

566 X 814 X 10

156

3000

3

1.6

1/16"

7.94

5/16"

2179X1100

85.8X43.3

12+12

Propeller

2

650

25.6

Direct

2

YS600-6P

0.6 X 2

930

72.4

R410A

6.5 X 2

Capillary

KCT-02.1 SR

17~30

18~52

-10~24

2229 X1245X1825

2236 X1280X1855

730/ (1609.3)

750(1653.4)

Nylon

2

900 X 815 X 12.5

Note:

The data are based on the following conditions:

Cooling: (1): Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB; - Outdoor Temperature 35°C(95°F) DB.

(2): Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB; - Outdoor Temperature 46°C(114°F) DB.

Heating and Power input: Indoor Temperature 20°C(68°F) DB/15°C(59°F) WB; - Outdoor Temperature 7°C(44.6°F) DB/6°C(42.8°F) DB

Electrical data: Indoor Temperature 32°C(90°F) DB / 24°C(74°F) WB; - Outdoor Temperature 52°C(125°F) DB

13

Cooling

Nominal ton

Model

Cooling Capacity 1

Power Input 1

Cooling Capacity 2

Power Input 2

Heating Capacity Heating

Capacity steps

Electrical data

Power Input

Performance

Indoor Coil

Power supply

Max. input consumption

Max. current

Indoor fan air flow

ESP

EER 1

EER 2

COP

Number of rows

Fin spacing

Tube diameter

Indoor fan

Compressor

Coil length X height

Number of circuits

Type

Quantity

Diameter(Width)

Drive type

Motors quantity

Motor model

Motor output

Motor rpm

Type

Quantity

Model

Brand

Capacity

Input

Rated load Amps rotor oil

Outdoor Coil kW kW

%

V/Ph/Hz kW

A

CFM

Pa

Btu/W.h

Btu/W.h

Btu/W.h

Btu/h kW kW

Btu/h kW kW

Btu/h mm inch mm inch mm inch mm inch kW r/min

Btu/h kW

A

A ml

14

5/16''

1882X1012

74.1X39.8

11+12

FC centrifugal

1

452

17.8

Belt

1

YFD132S-4-5.5

5.5

1440

Scroll

2

SH140A4ALC

Danfoss

119000

10.862

21.4

20

KRT 700 H2N

240000

70

23.6

213000

62.4

27.7

256000

75

23.4

0/50/100

380-415/3/50

35.7

69.2

8400

100

10.1

7.6

11

3

1.6

1/16''

7.94

147

3300

4

9/32''

1882X1428

74.1X56.2

17+17

FC centrifugal

1

500

19.7

Belt

1

Y(2)132M-4-7.5

7.5

1440

Scroll

2

SH184A4ALC

Danfoss

152426

13.732

27.6

30

KRT 1050 H2N

358000

105

35.8

328600

96

43.8

358000

105

34.8

0/50/100

380-415/3/50

48.6

93.1

13400

250

10.8

7.5

10.3

3

1.5

1/16''

7

197

3600

4

Outdoor Fan

Fin spacing

Tube diameter

Coil length X height

Number of circuits

Type

Quantity

Diameter(Width)

Drive type

Motors quantity

Motor model

Motor output

Motor rpm

Outdoor sound pressure level

Refrigerant Type

Refrigerant mm inch mm inch mm inch mm inch

KW r/min dB(A)

Kg

1.6

1/16"

7.94

5/16"

2650X1100

104.3X43.3

11+12

Propeller

2

750

29.5

Direct

2

YS1500-6

1.5 X 2

910

74.2

R410A

8.8 X 2

Standard controller

Operation temp

Outdoor ambient temp

Cooling

Heating

ºC

ºC

ºC

Capillary

KCT-02.1 SR

17~30

18~52

-10~24

Capillary

KCT-02.1 SR

17~30

18~52

-10~24

Dimensions Net(W×H×D) mm 2753 X1245X2157 2753 X1674X2157

Weight

Filter

Packing(W×H×D)

Net weight

Gross weight

Type

Quantity

Size (W×H×D) mm

Kg(Ibs)

Kg(Ibs)

2760 X1280X2175

940(2072.3)

955(2105.4)

Nylon

3

640 X 1008 X 12.5

2755 X1690X2180

1130(2491.2)

1140(2513.2)

Nylon

3

1492 X 640 X 12.5

Pieces mm

Shipping Qty'Per Pieces 3/4/8 2/4/4

20'/40'/40'HQ

Note:

The data are based on the following conditions:

Cooling: (1): Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB; - Outdoor Temperature 35°C(95°F) DB.

(2): Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB; - Outdoor Temperature 46°C(114°F) DB.

Heating and Power input: Indoor Temperature 20°C(68°F) DB/15°C(59°F) WB; - Outdoor Temperature 7°C(44.6°F) DB/6°C(42.8°F) DB

Electrical data: Indoor Temperature 32°C(90°F) DB / 24°C(74°F) WB; - Outdoor Temperature 52°C(125°F) DB

1.5

1/16"

7

9/32"

2650X1512

104.3X59.5

12+12

Propeller

2

750

29.5

Direct

2

YS1500-6

1.5 X 2

910

75.4

R410A

9.4 X 2

15

7. Dimensional Drawings

7.1 10 ton

16

7.2 15 ton

17

7.3 20 ton

18

7.4 30 ton

Drain connection hole

Maintain orifice for air supply motor

Control and comperssor access panel

Hole for control wires

Hole for power wires

Hole for other purpose

Electric heater control box access panel

Hole for electric heater power wires

Horizontal supply opening

8

8

8

Horizontal return opening

862

19

917

2693

2753

2157

294

18

1512

1

4

4

870

Fresh air

Hole for bottom installation

730

1656

Filter access door

16-15×20

135

8. Wiring Diagrams

10 ton KRT 350 H1N

20

15 ton KRT 530 H2N

21

20 ton KRT 700 H2N

22

30 ton KRT 1050 H2N

23

9. Performance Data

9.1 Cooling capacity for 10 Ton:

Air Flow（CFM） 3600 3800 4000 4200

Ent（DB）

（ o

F） 75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90

61

TC 104.1

106.3

108.6

110.9

107.0

109.3

111.6

114.0

109.7

112.0

114.4

116.8

111.8

114.2

116.6

119.1

85 67

SC 90.0

91.9

93.9

95.9

96.4

98.5

100.6

102.7

102.4

104.6

106.8

109.1

107.9

110.2

112.5

114.9

TC 116.6

119.1

121.6

124.2

117.8

120.3

122.8

125.4

118.9

121.4

124.0

126.6

119.5

123.2

124.6

127.2

SC 66.4

85.2

101.5

118.0

68.8

87.5

106.0

121.7

71.2

90.5

109.7

123.6

72.8

92.9

112.6

124.4

73

TC 121.1

123.7

126.3

128.9

121.5

124.1

126.7

129.4

121.8

124.4

127.0

129.7

123.0

125.6

128.2

130.9

SC 40.9

58.1

72.8

88.5

41.5

59.0

74.4

89.9

42.2

65.3

75.6

91.6

42.9

68.8

77.4

94.5

95

61

67

TC

SC

TC

96.0

85.9

111.9

98.1

87.8

114.3

100.2

89.6

116.7

102.3

91.6

119.2

99.1

92.4

115.7

101.2

94.4

120.2

103.4

96.4

121.7

105.6

98.5

123.3

102.1

98.6

117.0

104.3

100.7

121.2

106.5

102.9

121.9

108.8

105.1

125.5

104.3

93.7

118.3

106.5

95.7

122.6

108.8

97.8

123.2

111.1

99.9

126.5

73

SC 64.0

83.0

101.8

116.6

67.5

88.0

107.2

117.5

70.6

92.5

113.5

121.6

73.4

96.4

118.9

121.4

TC 120.0

122.5

125.1

127.8

120.3

122.8

125.4

128.1

121.0

123.6

126.2

128.8

121.3

123.9

126.5

129.1

SC 39.5

58.6

74.7

91.0

40.4

59.9

77.5

95.1

40.7

60.8

79.0

97.9

41.6

61.9

81.1

100.0

105

61

67

TC

SC

TC

87.7

81.8

103.5

89.6

83.6

105.7

91.5

85.4

108.0

93.5

87.2

110.3

91.0

88.4

106.1

93.0

90.3

108.4

95.0

92.2

110.7

97.0

94.2

113.0

93.0

86.6

107.8

95.0

88.5

110.1

97.0

90.4

112.4

99.1

92.3

114.8

96.7

94.4

109.5

98.8

96.4

111.8

100.9

98.5

114.2

103.0

100.6

116.6

SC 60.8

79.6

99.1

108.8

64.5

85.3

106.9

111.1

67.4

91.5

108.7

110.8

71.0

96.0

108.8

114.5

73

TC 117.0

119.5

122.0

124.6

117.8

120.3

122.8

125.4

118.4

120.9

123.5

126.1

119.0

121.5

124.1

126.7

SC 37.5

56.4

74.2

91.5

38.4

58.8

78.5

96.9

38.9

60.7

80.1

100.0

39.5

62.9

84.4

103.6

115

61

67

TC

SC

TC

79.5

77.8

94.5

81.2

79.5

96.5

83.0

81.2

98.6

84.8

83.0

100.7

82.4

79.4

96.4

84.2

81.1

100.2

86.0

82.9

100.6

87.9

84.7

102.7

85.5

83.4

98.8

87.3

85.2

100.9

89.2

87.0

103.1

91.1

88.9

105.3

89.0

87.5

101.4

90.9

89.4

103.6

92.9

91.3

105.8

94.9

93.3

108.0

SC 56.7

76.4

95.3

97.3

60.5

81.4

98.5

100.6

64.0

87.3

100.5

103.7

67.3

92.8

103.5

105.7

125

73

61

67

TC

SC 35.4

54.5

73.3

91.9

36.1

57.3

77.5

97.3

36.9

60.0

81.1

102.5

37.5

62.3

84.4

105.9

TC 71.7

73.2

74.8

76.5

74.3

75.9

77.6

79.3

77.1

78.8

80.5

82.2

80.3

82.0

83.8

85.6

SC

TC

112.4

70.1

85.3

114.8

71.6

87.1

117.2

73.2

89.0

119.7

74.8

90.9

113.3

71.6

87.0

115.7

73.1

91.1

118.2

74.7

91.4

120.7

76.4

92.8

114.0

75.2

89.2

116.4

76.8

91.3

118.9

78.5

93.1

121.4

80.2

95.1

114.3

78.9

91.6

116.7

80.6

93.5

119.2

82.4

95.5

121.7

84.2

97.6

SC 50.9

68.8

86.0

87.9

54.4

73.4

88.9

90.8

57.6

78.7

90.7

93.7

60.6

83.7

93.5

95.5

73

TC 101.6

103.7

105.9

108.2

102.4

104.6

106.8

109.1

103.0

105.2

107.5

109.7

103.3

105.5

107.7

110.0

SC 31.6

48.9

66.0

82.9

32.2

51.5

69.8

87.8

32.9

53.9

73.1

92.6

33.5

56.0

76.1

95.7

Notes: 1. All capacities are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat.

2. TC=Total Capacity. (Unit: 1000Btu/h).

3. SC=Sensible Capacity. (Unit: 1000Btu/h).

Heating capacity for 10 Ton:

Outdoor Temp (℉ ) 70%

RH

Net Capacities(kW)-3800 CFM

Peak Net Heating(kW) at Indicated Dry Bulb (℉ )

5

10.4

15.8

21.2

59

19.8

21.3

22.6

23.7

68

18.6

20.4

22

23

75.2

18.2

20

21.8

22.8

80.6

17.9

19.8

21.8

22.5

26.6

25.1

24.7

24.5

24.1

32 27 26.6

26.2

25.9

37.4

44.6

31.1

37.8

30.8

37

30.3

36.3

29.9

35.7

48.2

53.6

40.7

43.2

40.2

44.7

39.8

44.5

39.4

44.1

59 46.6

45.9

45.6

45.1

64.4

49.4

48.5

48 47.6

69.8

53 51.9

51.2

50.5

75.2

56 54.5

53.6

53

Peak Total Power(KW) at Indicated Dry Bulb

59

9.2

9.4

9.5

9.6

9.7

9.8

10

10.4

10.8

11.2

11.5

11.8

12

12.3

68

10.1

10.3

10.4

10.5

10.6

10.8

11

10.9

12

12.5

12.8

13.1

13.3

13.5

75.2

10.7

10.8

10.9

11.1

11.3

11.5

11.7

11.9

12.7

13.2

13.5

13.9

14

14.5

(℉ )

80.8

11.3

11.5

11.7

11.9

12.1

12.2

12.4

12.8

13.5

14

14.3

14.6

14.7

15

Notes: 1. For other airflows, see heating capacity correction factor tables.

2. Heating capacities and power are integrated to include the effects of defrost in the frost region.

24

9.7 Cooling capacity for 15 Ton:

AirFlow（ CFM） 5400 6000 6600 7200

Ent（ DB）

（ o

F） 75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90

85

61

67

TC 157.1

159.1

166.4

176.2

161.5

165.1

172.5

182.2

163.4

167.7

178.6

187.1

170.1

172.5

182.3

189.6

SC 125.0

149.3

159.5

168.8

132.2

159.1

167.1

176.5

139.6

160.7

171.2

179.4

145.8

165.3

174.8

181.7

TC 176.8

179.0

181.1

183.7

182.2

183.5

184.6

185.9

184.5

186.0

187.1

188.6

186.0

187.1

189.6

190.8

SC 98.2

121.3

143.3

166.4

102.8

126.2

150.6

173.7

104.7

129.9

155.5

181.1

107.2

133.6

160.3

187.1

73

TC 187.1

190.8

193.3

195.7

189.3

192.0

195.7

198.0

191.8

194.5

196.8

199.3

194.5

197.7

200.1

202.6

SC 65.7

90.3

110.5

129.9

67.1

92.5

113.1

132.1

68.4

93.4

115.1

137.2

69.6

94.5

116.6

141.1

95

61

67

TC

SC

TC

146.9

118.8

165.2

150.6

143.3

167.7

158.0

153.0

170.1

168.9

163.6

173.7

148.8

126.2

172.5

155.5

150.6

173.5

165.2

160.1

176.2

174.9

169.5

177.4

154.3

133.6

178.6

158.0

153.0

180.0

170.1

164.8

181.2

179.8

174.3

182.2

158.0

139.6

179.2

164.0

158.9

181.7

174.9

169.5

183.3

183.5

177.8

191.4

73

SC 93.4

116.5

139.6

162.7

97.6

122.5

147.0

172.5

101.6

126.3

154.3

179.8

104.6

132.4

160.3

182.4

TC 182.3

184.6

187.0

189.6

183.7

185.7

188.7

192.0

185.4

187.8

190.3

191.5

189.1

192.8

195.2

197.7

SC 62.5

86.6

108.3

128.7

64.0

89.8

111.3

133.6

65.3

91.4

114.2

137.2

66.7

93.0

116.5

140.9

105

61

67

TC

SC

TC

136.2

113.1

157.1

139.9

134.0

159.6

147.3

141.1

163.2

159.6

152.9

164.5

141.1

121.4

158.3

144.8

138.7

162.0

157.1

150.5

166.9

164.5

157.6

169.4

143.6

128.8

166.9

149.7

145.0

169.4

163.2

158.1

171.9

172.1

166.7

174.3

147.3

133.6

170.6

155.9

151.0

173.1

168.2

162.9

175.5

178.0

172.5

180.0

73

SC 88.1

111.6

134.8

159.2

102.5

117.7

143.3

164.1

96.1

123.8

150.6

168.9

99.8

128.7

158.0

178.0

TC 179.2

180.5

181.7

182.9

181.7

182.9

184.2

186.6

184.2

185.4

186.6

187.8

185.4

186.6

187.8

190.3

SC 59.1

82.7

105.2

126.3

60.5

85.8

109.0

132.4

61.8

88.8

112.1

135.9

63.1

90.1

115.0

142.3

115

61

67

TC

SC

TC

123.9

108.0

147.3

128.8

124.7

149.7

141.1

136.7

150.9

153.4

148.6

154.4

127.6

115.1

148.5

135.0

129.3

152.2

147.3

141.1

154.6

159.6

152.9

157.1

131.3

121.4

157.1

133.9

129.7

159.6

144.4

139.9

163.2

165.7

160.5

167.5

135.0

120.8

160.8

144.8

140.3

163.2

158.3

153.4

165.7

169.4

164.1

169.4

73

SC 91.9

106.9

130.0

153.4

96.8

113.4

138.6

157.1

101.7

119.0

144.8

162.3

95.3

125.1

154.6

165.9

TC 166.9

169.4

171.9

173.1

171.9

174.3

175.5

176.8

175.5

176.8

178.0

179.2

176.8

178.0

179.2

180.5

SC 55.6

79.1

102.4

125.1

57.0

83.3

106.7

130.0

59.9

85.8

111.6

137.4

59.9

89.4

114.0

139.9

125

61

67

TC

SC

TC

118.9

103.6

141.3

123.6

119.7

143.7

135.4

131.2

144.9

145.6

141.0

147.3

122.4

110.5

142.5

129.5

125.4

146.1

141.3

136.9

148.4

153.2

148.4

150.8

126.0

116.5

150.8

134.2

130.0

153.2

147.3

142.6

156.7

159.1

154.1

160.6

129.5

115.9

154.3

139.0

133.2

156.7

152.0

145.6

159.1

162.6

155.9

164.6

SC 88.1

102.5

124.8

147.3

92.8

108.8

133.1

146.1

97.6

114.1

139.0

155.6

91.4

120.0

148.4

159.5

73

TC 160.3

162.6

165.0

166.2

165.0

167.4

168.5

169.7

168.5

169.7

170.9

172.1

169.7

170.9

172.1

173.3

SC 53.2

75.8

98.2

120.0

54.5

79.8

102.3

124.8

57.4

82.2

107.0

131.9

57.4

85.8

109.4

134.2

Notes: 1. All capacities are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat.

2. TC=Total Capacity. (Unit: 1000Btu/h).

3. SC=Sensible Capacity. (Unit: 1000Btu/h).

Heating capacity for 15 Ton:

Outdoor Temp (℉ )

70% RH

Net Capacities(kW)-6600 CFM

Peak Net Heating(kW) at Indicated Dry Bulb (℉ )

5

10.4

59

29.7

32.0

68

27.9

30.6

75.2

27.3

30.0

80.6

26.9

29.7

15.8

33.9

33.0

32.7

32.7

21.2

35.6

34.5

34.2

33.8

26.6

37.7

37.1

36.8

36.2

32 40.5

39.9

39.3

38.9

37.4

46.7

46.2

45.5

44.9

44.6

56.7

56 54.3

53.7

48.2

53.6

59

64.4

69.8

75.2

61.1

64.8

69.9

74.1

79.5

84.0

60.3

67.1

68.9

72.8

77.9

81.8

59.7

66.8

68.4

72.0

76.8

80.4

59.1

66.2

67.7

71.4

75.8

79.5

Peak Total Power(KW) at Indicated Dry Bulb

59

13.8

14.1

14.3

14.4

14.6

14.7

15.0

15.6

16.2

16.8

17.3

17.7

18.0

18.5

68

15.2

15.5

15.6

15.8

15.9

16.2

16.5

17.5

18.0

18.8

19.2

19.7

20.0

20.3

75.2

16.1

16.2

16.4

16.7

17.0

17.3

17.6

18.2

19.1

19.8

20.3

20.9

21.0

21.8

(℉ )

80.8

17.0

17.3

17.6

17.9

18.2

18.3

18.6

19.2

20.3

21.0

21.5

21.9

22.1

22.5

Notes: 1. For other airflows, see heating capacity correction factor tables.

2. Heating capacities and power are integrated to include the effects of defrost in the frost region.

25

9.9 Cooling capacity for 20 Ton:

AirFlow（ CFM） 6800 7600 8400 9200

Ent（ DB）

（ o

F） 75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90

85

61

67

TC 209.7

212.3

222.1

234.9

215.6

220.3

230.0

242.9

218.0

223.7

238.2

249.4

227.0

230.0

243.0

252.6

SC 167.3

199.5

215.2

227.7

176.9

212.3

222.9

235.4

186.7

216.8

230.8

241.7

194.8

222.9

235.6

244.9

TC 235.7

238.7

241.4

244.8

242.9

244.7

246.1

247.8

246.0

247.9

249.4

251.3

247.9

249.4

252.6

254.3

SC 131.9

162.4

191.5

222.1

138.1

168.9

201.1

231.7

140.5

173.8

207.6

241.4

143.8

178.7

214.0

249.4

73

TC 249.4

254.3

257.5

260.8

252.3

255.9

260.8

263.8

255.6

259.1

262.2

265.5

259.1

263.4

266.6

269.9

95

61

67

SC 89.0

121.5

148.1

173.8

90.8

124.4

151.6

176.7

92.6

125.6

154.3

183.4

94.2

127.0

156.3

188.6

TC 196.2

201.1

210.9

225.3

198.8

207.6

220.5

233.3

206.0

210.9

227.0

239.8

210.9

218.8

233.3

244.7

SC 159.2

191.5

204.3

218.4

168.9

199.1

211.4

223.7

178.7

204.3

219.9

232.4

186.7

212.1

226.1

237.1

TC 220.5

223.7

227.0

231.7

230.0

233.6

234.9

236.5

238.2

240.0

241.6

242.9

239.0

242.2

244.3

247.1

SC 125.6

156.1

186.7

217.2

131.1

164.1

196.4

230.0

136.4

169.1

206.0

239.8

140.3

177.1

214.0

227.1

73

TC 243.0

246.1

249.2

252.6

244.8

247.6

251.5

255.9

247.1

250.4

253.6

255.2

252.0

256.9

260.1

263.4

105

61

67

SC 84.8

116.6

145.2

172.2

86.7

120.8

149.3

178.7

88.5

123.0

153.0

183.4

90.3

125.1

156.1

188.3

TC 182.1

187.0

196.7

213.0

188.6

193.5

209.7

219.5

191.9

200.0

217.9

232.5

196.7

208.1

224.4

237.4

SC

TC

151.6

209.7

181.2

213.0

190.6

217.9

206.4

219.5

162.6

211.4

187.5

216.2

203.2

222.7

212.7

226.0

172.4

222.7

193.8

226.0

211.1

229.2

225.3

232.5

178.7

227.6

201.7

230.9

217.4

234.1

230.0

237.4

73

SC 118.6

149.6

180.3

212.5

137.6

157.7

191.5

202.7

129.1

165.7

201.1

232.5

134.0

172.2

210.9

227.4

TC 239.0

240.6

242.2

243.9

242.2

243.9

245.5

248.7

245.5

247.1

248.7

250.4

247.1

248.7

250.4

253.6

SC 80.2

111.4

141.2

169.1

82.2

115.6

146.2

177.1

83.8

119.5

150.3

181.8

85.6

121.2

154.2

190.2

115

61

67

TC

SC

TC

165.9

144.9

196.7

172.4

167.0

200.0

188.6

182.8

201.6

204.9

198.5

204.9

170.7

154.3

198.4

180.5

174.9

203.2

196.7

190.6

206.5

213.0

206.4

209.7

175.6

162.6

209.7

187.0

181.2

213.0

204.9

198.5

217.9

221.1

214.3

221.1

180.5

174.5

214.6

193.5

187.5

217.9

211.4

204.8

221.1

226.0

219.0

227.7

73

SC 123.6

143.4

174.0

204.9

130.1

152.0

185.4

209.7

136.6

159.4

193.5

221.1

128.2

167.5

206.5

226.0

TC 222.7

226.0

229.2

230.9

229.2

232.5

234.1

235.7

234.1

235.7

237.4

239.0

235.7

237.4

239.0

240.6

SC 75.7

106.7

137.4

167.5

77.5

112.2

143.1

174.0

81.4

115.5

149.6

183.7

81.4

120.4

152.9

187.0

125

61

67

TC

SC

TC

156.1

136.3

185.2

162.2

157.2

188.3

177.6

172.0

189.8

192.9

186.9

203.9

160.7

145.2

186.8

169.9

164.6

191.4

185.2

179.5

194.4

200.6

194.3

197.5

165.3

153.0

197.5

176.0

170.6

200.6

192.9

186.9

205.2

208.2

201.8

208.2

169.9

163.9

202.1

182.2

176.5

205.2

199.0

192.9

208.2

212.8

206.2

214.7

73

SC 116.2

134.9

163.8

182.9

122.4

143.1

174.5

193.4

128.5

150.0

182.2

203.9

120.5

157.6

194.4

210.3

TC 209.8

212.8

215.9

217.4

215.9

219.0

220.5

222.0

220.5

222.0

223.6

225.1

222.0

223.6

225.1

226.6

SC 71.0

100.3

129.3

157.6

72.7

105.5

134.6

163.8

76.4

108.6

140.8

173.0

76.4

113.2

143.8

176.0

Notes: 1. All capacities are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat.

2. TC=Total Capacity. (Unit: 1000Btu/h).

3. SC=Sensible Capacity. (Unit: 1000Btu/h).

Heating capacity for 20 Ton:

Outdoor Temp (℉ )

70% RH

Net Capacities(kW)-8400 CFM

Peak Net Heating(kW) at Indicated Dry Bulb (℉ )

5

10.4

59

39.6

42.6

68

37.2

40.8

75.2

36.4

40.0

80.6

35.8

39.6

15.8

45.2

44.0

43.6

43.6

21.2

26.6

32

37.4

44.6

48.2

47.4

50.2

54.0

62.2

75.8

81.4

46.0

49.4

53.2

61.6

75

80.4

45.6

49.0

52.4

60.6

74.2

79.6

45.0

48.2

51.8

59.8

73.6

78.8

53.6

86.4

89.4

89.0

88.2

59

69.8

75.2

64.4

93.2

98.8

106.0

112.0

91.8

97.0

103.8

109.0

91.2

96.0

102.4

107.2

90.2

95.2

101.0

106.0

Peak Total Power(KW) at Indicated Dry Bulb

59

18.4

18.8

19.0

19.2

19.4

19.6

20.0

20.8

21.6

22.4

23.0

23.6

24.0

24.6

68

20.2

20.6

20.8

21.0

21.2

21.6

22.0

23.4

24.0

25.0

25.6

26.2

26.6

27.0

75.2

21.4

21.6

21.8

22.2

22.6

23.0

23.4

24.2

25.4

26.4

27.0

27.8

28.0

29.0

(℉ )

24.8

25.6

27.0

28.0

28.6

29.2

29.4

30.0

80.8

22.6

23.0

23.4

23.8

24.2

24.4

Notes: 1. For other airflows, see heating capacity correction factor tables.

2. Heating capacities and power are integrated to include the effects of defrost in the frost region.

26

9.10 Cooling capacity for 30 Ton:

Air Flow（CFM） 10000 12000 13400 14800

Ent(DB）

（℉）

75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90

61

TC 317.9

321.9

335.9

355.1

326.4

333.5

347.7

366.7

330.1

338.5

359.5

376.1

343.1

347.8

366.7

381.0

SC 260.2

307.2

326.9

345.0

274.1

326.2

341.6

353.9

288.4

329.3

349.5

365.5

300.4

338.2

356.4

370.0

85 67

TC 356.0

360.4

364.3

369.6

366.5

369.1

371.1

373.8

370.9

373.9

375.9

379.0

373.8

376.0

380.8

383.3

SC 208.3

253.1

295.5

340.4

217.2

262.6

309.7

354.5

220.9

269.7

319.1

348.8

225.7

276.9

328.4

360.4

95

73

61

67

73

TC 375.9

383.2

387.9

392.8

380.2

385.5

392.6

397.2

385.0

390.3

394.7

399.7

390.2

396.5

401.1

406.1

SC 145.5

193.2

232.1

269.8

148.2

197.4

237.2

274.1

150.7

199.2

241.0

250.2

153.1

201.3

243.9

291.5

TC 298.2

305.5

319.7

340.9

301.9

342.2

333.6

352.5

312.5

319.8

343.1

362.0

319.7

331.4

352.3

369.2

SC 248.2

295.6

314.3

335.0

262.5

305.0

328.0

346.4

276.8

314.4

337.1

355.7

288.4

325.8

346.2

362.4

TC 343.9

348.8

353.4

360.5

351.0

358.3

365.2

367.7

369.8

372.6

374.8

377.0

371.0

375.9

378.9

394.7

SC 199.1

243.8

288.4

333.2

259.2

307.4

330.7

342.2

261.9

278.8

322.8

348.3

271.7

310.2

328.4

371.3

TC 366.7

371.2

375.7

381.0

369.4

373.3

379.0

385.6

372.6

377.4

382.1

384.6

379.8

387.1

391.6

396.6

SC 139.3

186.0

227.9

267.5

142.2

192.2

233.7

277.0

144.7

195.3

239.3

283.9

147.4

198.4

243.7

291.1

105

115

125

61

67

73

61

67

73

61

67

73

TC 277.5

284.8

299.0

323.0

287.0

294.3

317.9

332.4

291.8

303.7

329.7

351.4

299.0

315.7

339.4

358.5

SC 237.2

277.7

291.3

314.3

253.2

286.7

309.5

323.4

267.5

298.9

324.2

341.0

276.8

310.5

333.4

352.2

TC 317.9

322.9

329.7

332.4

320.3

327.5

336.9

341.9

336.9

341.8

346.5

351.4

344.0

349.0

353.5

362.4

SC 188.8

234.4

279.1

326.5

216.7

246.1

295.5

336.0

204.3

257.9

309.7

345.2

211.4

267.4

324.0

352.8

TC 360.7

363.3

365.5

368.0

365.5

367.9

370.3

375.2

370.3

372.7

375.0

377.1

372.6

375.1

377.3

382.3

SC 132.8

178.5

221.9

262.9

135.5

184.5

229.2

274.7

138.0

190.3

235.2

281.4

140.5

192.8

240.8

293.8

TC 263.7

273.3

297.0

321.0

270.9

285.3

309.0

333.0

278.1

283.2

303.4

344.8

285.2

304.3

330.3

351.9

SC 227.3

259.7

282.8

306.0

241.0

268.6

291.3

314.3

253.2

267.3

279.9

319.0

252.0

289.8

315.1

336.0

TC 319.0

323.7

325.9

331.0

321.3

328.6

331.1

338.1

337.9

342.9

349.7

358.2

345.1

349.8

354.6

362.1

SC 221.8

250.9

295.4

320.1

231.2

263.4

312.1

316.1

245.7

279.3

319.0

323.1

253.3

311.1

322.4

329.4

TC 336.9

341.8

346.5

349.1

346.5

351.3

353.5

356.2

353.5

356.1

358.3

360.9

356.0

358.4

360.7

363.4

SC 126.0

171.5

216.5

260.6

131.7

179.6

224.8

270.0

134.3

184.5

234.3

284.3

194.3

221.4

238.9

289.2

TC 244.1

253.3

276.0

295.9

250.8

264.7

287.4

310.6

257.8

273.8

299.0

322.0

264.6

283.0

308.1

328.8

SC 218.8

230.0

252.1

271.3

232.1

261.0

283.2

305.6

243.7

259.9

284.2

314.6

242.6

276.1

300.0

310.1

TC 287.4

292.1

294.3

299.2

289.7

296.8

301.1

306.0

305.8

310.5

317.2

324.9

312.5

317.3

321.8

332.6

SC 175.3

216.8

259.8

283.5

197.3

228.9

275.8

291.2

207.2

239.2

287.2

315.5

195.2

250.6

305.4

327.1

TC 324.1

328.7

333.2

335.7

333.2

337.9

340.0

342.5

340.0

342.4

344.6

347.1

342.3

344.7

346.9

349.5

SC 121.3

165.1

208.3

250.7

123.9

172.9

216.3

260.0

129.5

177.5

225.4

273.7

129.5

184.5

230.0

278.1

Notes: 1. All capacities are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat.

2. TC=Total Capacity. (Unit: 1000Btu/h).

3. SC=Sensible Capacity. (Unit: 1000Btu/h).

Heating capacity for 30 Ton:

Outdoor Temp(°F)

70% RH

5

10.4

15.8

21.2

26.6

32

Net Capacities(kW)-12000 CFM

59

59.4

Peak Net Heating(kW) at Indicated Dry Bulb(°F)

68 75.2

80.6

55.8

54.6

53.8

64

67.8

61.2

66

60

65.4

59.4

65.4

71.2

75.4

81

69

74.2

79.8

68.4

73.6

78.6

67.6

72.4

77.8

37.4

44.6

48.2

53.6

59

64.4

69.8

75.2

93.4

107.4

122.2

129.6

139.8

148.2

159

168

92.4

105.0

120.6

134.2

137.8

145.6

155.8

163.6

91

104.8

119.4

133.6

136.8

144

153.6

160.8

89.8

104.2

118.2

132.4

135.4

142.8

151.6

159

30

31.2

32.4

33.6

34.6

35.4

36

37

Peak Total Power (kW) at Indicated Dry Bulb(°F)

59 68 75.2

80.8

27.6

28.2

30.4

31

32.2

32.4

34

34.6

28.6

28.8

29.2

29.4

31.2

31.6

31.8

32.4

32.8

33.4

34

34.6

35.2

35.8

36.4

36.6

33

34.8

36

37.6

38.4

39.4

40

40.6

35.2

36.4

38.2

39.6

40.6

41.8

42

43.6

37.2

38.4

40.6

42

43

43.8

44.2

45

Notes: 1. For other airflows, see heating capacity correction factor tables.

2. Heating capacities and power are integrated to include the effects of defrost in the frost region.

27

10. Electrical Data

10.1 Electrical Data

Model Power Supply Compressor(Each) Evaporator fan motor(Each) Condenser fan motor(Each)

KRT 350 H1N

KRT 530 H2N

KRT 700 H2N

MCA(A) TOCA(A) MFA(A) RLA(A) LRA(A) IP(kW) QTY FLA(A )

33.2 38.5 55.0 21.4 147.0 10.9 1 3.7

56.2

71.8

64.4

82.5

90.0

115

16.4

21.4

142.0

147.0

8.5

10.9

2

2

11.8

11.8

KRT 1050 H2N 90.9 104.7 150.0 27.6 197.0 13.7 2 15.4 5.9 1 3.3 1.7

MCA: Min. Current Amps. (A)

MFA: Max. Fuse Amps. (A)

TOCA: Total Over-current Amps. (A)

RLA : Rated Current (A)

LRA: Locked rotor Amps. (A) IP: Input (kW) FLA: Full Load Amps. (A)

10.2 Motor protection class

Model

Compressor Indoor fan motor Indoor coil Outdoor fan motor Outdoor coil

Motor protection Insulation class Safe class Pressure Insulation class Safe class Pressure

KRT 350 H1N

KRT 530 H2N

KRT 700 H2N

IOP

IOP

IOP

F

F

F

F

IP54

IP54

IP54

IP54

250psi

250psi

250psi

250psi

F

F

F

F

IP54

IP54

IP54

IP44

450psi

450psi

450psi

450psi KRT 1050 H2N IOP

IOP: Internal overload protector

2

28

IP(kW) QTY FLA(A ) IP(kW) QTY

1.3 1 2.7 1.3 1

5.1

5.1

1

1

1.7

3.3

0.9

1.7

2

2

11. Parameter and Pressure Chart for Air Volume

Model: 10 ton

Parameter table for indoor unit air volume:

Static pressure (Pa) 0 25 50 75

Air flow (CFM)

Brake power (kW)

Fan speed (rpm)

4298

2.18

1000

4156

2.1

1004

Curve diagram of static pressure, air flow volume:

250

225

200

175

150

125

100

75

50

25

0

3929

2.02

1006

3756

1.96

1011

100

3579

1.86

1014

125

3382

1.79

1016

150

3218

1.71

1020

2800 3000 3200 3400 3600 3800 4000 4200 4400 4600

Parameter table for outdoor unit air volume:

Static pressure

Model

(Pa)

Air flow

(CFM)

Air volume(CFM)

Brake power

(kW)

Fig.7-4

Fan speed

(rpm)

10 ton

0

10

20

7060

6765

6471

0.78

0.79

0.80

935

926

918

175

3020

1.62

1021

29

Model: 15 ton

Parameter table for indoor unit air volume:

Static pressure (Pa) 0 50

Air flow (CFM) 7209 6675

75

6575

Brake power (kW)

Fan speed (rpm)

5.11

1029

4.85

1029

Curve diagram of static pressure, air flow volume:

250

225

200

175

150

125

100

75

50

25

0

4.71

1030

90

6400

4.65

1031

125

6150

4.45

1031

150

6044

4.32

1032

5200 5450 5700 5950 6200 6450 6700 6950 7200 7450

Air volume(CFM)

Parameter table for outdoor unit air volume:

Static pressure

Model

(Pa)

15 ton

0

10

20

Air flow

(CFM)

11000

9800

9600

Brake power

(kW)

0.78×2

0.79×2

0.80×2

200

5639

4.08

1033

Fan speed

(rpm)

935

926

918

250

5227

3.82

1034

30

Model: 20 ton

Parameter table for indoor unit air volume:

Static pressure (Pa) 25 50 75 100 125 150 200 250 300

Air flow (CFM)

Brake power (kW)

Fan speed (rpm)

9296 8782 8452 8289 8179 7826 7388 6955 6555

5.86

5.73

5.59

5.44

5.50

5.27

4.98

4.66

4.32

818 819 819 820 820 821 822 823 825

Curve diagram of static pressure, air flow volume:

300

270

240

210

180

150

120

90

60

30

0

6800 7100 7400 7700 8000 8300 8600 8900 9200 9500

Air volume(CFM)

Parameter table for outdoor unit air volume:

Static pressure

Model

(Pa)

20 ton

0

10

20

Air flow

(CFM)

14000

13500

13100

Brake power

(kW)

1.3×2

1.4×2

1.5×2

Fan speed

(rpm)

940

938

930

31

Model: 30 ton

Parameter table for indoor unit air volume:

Static pressure (Pa)

Air flow (CFM)

150 175 200 225 250 275 300 325 350

14664 14464 14119 13743 13230 12729 12365 11957 11489

Brake power (kW)

Fan speed (rpm)

8.91

775

8.59

775

8.30

776

8.01

777

7.71

778

7.40

779

7.07

780

6.74

782

6.39

782

Curve diagram of static pressure, air flow volume:

5 00

4 60

4 20

3 80

3 40

3 00

2 60

2 20

1 80

1 40

1 00

10000 10500 11000 11500 12000 12500 13000 13500 14000 14500 15000 15500 16000

Air volume(CFM)

Parameter table for outdoor unit air volume:

Static pressure

Model

(Pa)

Air flow

(CFM)

Brake power

(kW)

30 ton

0

10

14000

13500

1.3×2

1.4×2

20 13100 1.5×2

Fan speed

(rpm)

940

938

930

32

12. Refrigerant Cycle Diagram

10 ton:

High pressure

switch

TP

Four way valve

Low pressure

switch

Condenser

Evaporator

TP: Compressor discharge temperature sensor in system

T2: Indoor coil temperature sensor in system

T3: Outdoor coil temperature sensor in system

15,20,30 ton:

High pressure

switch

TP

Four way valve

High pressure

switch

Low pressure

switch

TP

Four way

valve

Low pressure

switch

TP: Compressor discharge temperature sensor in system A and B

T2: Indoor coil temperature sensor in system A and B

T3: Outdoor coil temperature sensor in system A and B

33

Condenser

Evaporator

T3

T2

T3

T3

T2

T2

13. Operation Limit

Cooling mode

55

50

45

40

35

30

25

20

15

10

10 15 20 25 30 35

Indoor temperature (

ºC

WB)

Temperature

Outdoor temperature Indoor temperature

Mode

Cooling mode 18ºC～52ºC 17ºC～30ºC

Heating mode

35

30

25

20

15

10

5

0

-5

-10

-15

-20

5 10 15 20 25 30 35

Indoor temperature (ºC DB)

Temperature

Outdoor temperature Indoor temperature

Mode

Heating mode

-10ºC～24ºC 17ºC～30ºC

Note:

Room relative humidity less than 80%. If the unit operates in excess of this figure, the surface of the unit may attract condensation.

34

14. Installation

14.1 Lifting

Rigging cables should have adequate capability to resist 3 times weight of unit. Before lift, please check and ensure that hooks are holding tightly to unit and lifting angles are no less than 60°.

Cloth material or hard-paper should be padded in the contact place between unit and rigging cable. Rigging cable should be entwined a round at the hook to prevent danger by cable slip because of weight unbalance. During lifting, anyone forbidden lingering under the lifting unit.

14.2 Service Space

1. The recommended clearances for single-unit installations are illustrated in following Fig.

These minimum requirements are not only an important consideration when determining unit placement, but they are also essential to ensure adequate serviceability, maximum capacity, and peak operating efficiency. 2. Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances which appear to be inadequate should be reviewed with a local engineer.

For 10 ton and above

35

For 10 ton and above

14.3 Rooftop -- units

For roof top applications using a field fabricated frame and ducts, according to the following procedure:

1) The frame must be located and secured by bolting or welding to the roof. Flashing is required.

2) The hole in the roof must be prepared in advance of installing the unit.

3) Secure the ducts to the roof.

4) Place the unit on the frame or roof curb.

5) Secure the unit to the frame or roof curb.

6) Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then weatherproof. There must be a weatherproof seal where the duct enters the structure.

7) Complete the installation according to the instructions.

Typical rooftop application with frame:

36

Typical rooftop application with frame:

37

15.4 Ground Level -- Horizontal Units

For ground level installations, the unit should be positioned on a pad the size of the unit or larger. The unit must be level on the pad. The pad must not come in contact with the structure. Be sure the outdoor portion of the supply and return air ducts are as short as possible.

Installation according to the following procedure:

1) Place the unit on the pad.

2) Attach the supply and return air ducts to the unit.

3) Insulate any ductwork outside of the structure with at least 2 inches of insulation and weatherproof. There must be a weatherproof seal where the duct enters the structure.

4) Complete the installation according to the instructions.

38

Typical ground level application:

14.5 Installation of condensate drain piping

10&15&20ton:

Outer diameter:28 mm/1.1 inch

Inner diameter:21 mm/0.83 inch

39

14.6 Ductwork

1. Attaching horizontal ductwork to unit

1) All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use a minimum of two (2) inches of insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the building.

2) When attaching ductwork to a horizontal unit, provide a flexible watertight connection to prevent noise transmission from the unit to the ducts. The flexible connection must be indoors and made out of heavy canvas.

Note:

Do not draw the canvas taut between the solid ducts.

2. Attaching down flow ductwork to roof curb

Supply and return air flanges are provided on the roof curb for easy duct installation. All ductwork must be run and attached to the curb before the unit is set into place.

Follow these guidelines for ductwork construction:

1) Connections to the unit should be made with three-inch canvas connectors to minimize noise and vibration transmission.

2) Elbows with turning vanes or splitters are recommended to minimize air noise and resistance.

3) The first elbow in the ductwork leaving the unit should be no closer than two feet from the unit, to minimize noise and resistance.

40

14.7 Wiring provision

Field wiring

The units are internally wired at the factory according to generally accepted electrical technology.

Required field wiring

Main power wiring to the unit control wiring between the control center and the unit, and earth wiring are required in the field.

10Ton

15&20&30Ton

Required components

The following components are required: main power fuse, conduit coupling, and field supplied room thermostat.

Wire and fuse size selection for main power source.

Wire and fuse size should be selected in accordance with national standard, taking the designed maximum current shall be the total of the compressor maximum current, condenser fan motor current and evaporator fan motor current (refer to “electrical data”).

Wire size between room thermostat and unit.

The wire size between the room thermostat and the unit should be determined according to the following table, because the 24V power source is applied to the control circuit.

41

15 Wired Controller

15.1 Standard wired controller KCT-02.1 SR

1. Precautions

The following contents are stated on the product and the operation manual, including usage, precautions against personal harm and property loss, and the methods of using the product correctly and safely. After fully understanding the following contents (identifiers and icons), read the text body and observe the following rules.

Means improper handling may lead to personal severe injury.

Warning

Caution

Means improper handling may lead to personal injury o property loss.

42

2. Model And Specification

Model

Power Supply Voltage

Ambient Temperature Range

Ambient Humidity Range

Performance features

1. Operating mode: Cool, heat, dry, fan and auto.

2. Set the mode through buttons.

3. Indoor setting temperature range: 17°C ~30°C.

4. LCD (Liquid Crystal Display).

5. Touch-style key

Function summarize

KCT-02.1 SR is the touch-style key wired controller.

KCT-02.1 SR

5.0V DC

-5°C～+43°C

RH40%~RH90%

New function

Air filter cleaning reminding function

Indoor unit address setting function

Remote control receiver function

Basic function

ON and OFF the air-conditioner

Auto-restart function

Time ON and Time OFF setting

Lock the wired controller

Quiet operation

Clock setting

Setting the Operating mode, Temperature

Follow me

3. Buttons And Their Functions

Fan speed and Swing functions

(1) Remote signal receiving function

There is the signal receiver for wireless remote controller on the KJR-29B.You can use the wireless remote controller to control the air-conditioner through the wired remote controller when the system has been powered on.

43

Notes: The wired controller will not receive the swing controlling instruction. For the indoor unit with swinging function, you can directly use the remote controller to control swinging through the display panel of the indoor unit, or use the swing button on the wired remote controller to control the indoor unit for swinging.

(2) ON/OFF button

Press the ON/OFF button to control the indoor unit on and off status. When the unit is turned off, press the

ON/OFF button, the unit will be turned on and the operating icon lights up. When the unit is turned on, press the ON/OFF button, the unit will be turned off and the operating icon lights off.

(3) Mode button

Press the mode button to set the operating mode, after each button press the operation mode will circle as follow:

AUTO COOL DRY HEAT FAN

When the controller has been set to cool-only, then there is no HEAT mode.

(4) Fan speed setting

Under COOL, HEAT and FAN modes, press the fan speed button can adjust the fan speed setting. After each fan speed button press will circle as follow:

AUTO

→ LOW→ MID→ HIGH→ AUTO

Under AUTO and DRY modes, the fan speed is not adjustable and the default fan speed is auto.

(5)Temperature setting

Under AUTO, COOL, DRY, HEAT modes, press the Temp adjust Up/Down buttons to set the temperature, the adjusting range is 17

ºC~30ºC (or 62℉~88℉). The setting temperature cannot be adjusted under FAN mode.

(6)Timer on and Timer off setting

Press the timer/clock setting button, then enter into the timer on setting status, and the screen will display timer icon and .

You can press Temperature setting buttons to adjust the time. When the time setting is less than 10 hours, each press the Temp setting buttons will increase or decrease 0.5 hour. When the timer setting is more than

10 hours, each press Temp setting buttons will increase or decrease 1 hour, the maximum timer setting is 24 hours. After finish adjusting the time on setting, press the 26

ºC/OK button or wait for 5 seconds to confirm and exit the time on setting.

Notes: If the wired remote controller has been set timer on/ off, press the ON/OFF button to turn on/ turn off the unit then the timer will be canceled simultaneously .

(7) Clock setting

Long press the timer/clock setting button for 3 seconds, and then enter into the clock setting status. The hour position of the clock will flash, and can press Temp setting buttons to adjust the hour value.

After finish the hour setting, press left button or right button to switch to minute position setting, then the minute position will flash, press Temp setting buttons to adjust the minute value. After finish the clock setting, press the button or wait for 5seconds to confirm and exit the setting state.

(8)Quiet/OK button

Under the cooling, heating and auto mode, when operate the quiet mode, it can reduce the running noise through setting the fan speed to low. This will help you bring a quieter environment.

44

Under AUTO, DRY mode, the fan speed is auto and the Quiet /OK button doesn’t work.

(9) Wired controller locking

Press the temperature adjusting UP and DOWN buttons simultaneously, the wired controller enters into locking state, and the locking icon will be lighted up. Under the locking state, the wired controller will not respond to buttons by pressing and the control instruction from the wireless remote controller. Simultaneously press temperature adjusting buttons again will cancel the locking state.

(10) Air filter cleaning reminding function

The wired controller records the total running time of the indoor unit, when the accumulated running time reaches the pre-set value, air filter cleaning reminding icon will be lighted up, to remind that the air filter of the indoor unit needs to be cleaned. Long press left button for 3 seconds, and clear the reminding icon and the wired controller will re-accumulate the total running time of the indoor unit.

Notes: The default setting value of reminding function is 2500 hours, and it can change to be 1250 hours, 5000 hours or 10000 hours. The setting methods please refer to the installation manual.

(11)Swing function

If the indoor unit supports swing function, press the right button to adjust the air outlet direction of the indoor unit. Long press this button for 3 seconds can turn on or turn off the auto-swing function. When the autoswing function is turned on, the swing icon will be lighted up.

(12)Follow me function

When the system is running and the operating mode is AUTO. COOL or HEAT, press the left button will activate the Follow Me function. Press left button again will cancel follow me function. When the operating mode is changed, and then will cancel this function as well. When the Follow Me function is activated, the icon will be light up, and the wired controller will display room temperature read from the local sensor, and transmit the temperature value to the indoor unit every 3 minutes.

(13) Setting addresses

 Press the Temp. UP and DOWN button simultaneously for more than 8 seconds, then the controller gets into address setting mode.

 In the address setting mode, there are 2 main functions:

 Querying address: Press MODE button, the corresponding indoor unit will display its address.

 Setting address: Use the UP and DOWN buttons to choose an address you want. Then press the

FAN button to set the indoor unit's address. The corresponding indoor unit will display the new address and record it. After about 4 seconds, this displaying will fade out and indoor units turn to normal display mode.

 After setting addresses, users can press the Quiet/OK button can exit the address setting mode.

 After each setting address and enter the query / set mode again, it will display the last set of address, but if re-power, this address will be cleared.

 In the address setting mode, wired controller does not respond to any command from remote controller.

45

4. Installation

※ Preparation before Installation:

Make sure the following pasts has been prepared.

N

O.

1

2

3

4

5

6

7

8

9

Name

Wired Controller

Cross round heat wood

Mounting Screw

Cross round heat mounting Screw

Installation Manual

Owner's Manual

Plastic expansion pipe

Plastic screw bar

Switching wires for signal receiving board

Switching wires for wired controller signal

QTY.

1

3

2

1

1

3

1

1

1

※ Prepare for the following at installation site.

N

O.

1

Name

4-core Shield Cable

Qty.(embedde d into wall)

1

1

M4×20(For mounting on the wall)

M4×25(For mounting on the electrical switch box)

For mounting on the Wall

For fixing on the 86 electrician box

For connecting the signal receiving board and 4-core shielding wire

(If needed) For connecting the main control panel and 4-core shielding wire

Specification remarks

/

Remarks

(only for reference)

RVVP-0.5 mm

2

×4

/

/

/

Remarks

0.05 mm

2

×5 cable no more than 12M

/ 2

3

86 electrician box

Wiring

Tube(Insulating

Sleeve and

Tightening Screw)

※ Dimensions:120*120*20mm

1 / /

Figure A

46

5. Wiring

※ Wiring principle sketch:

※ Wiring figure:

1) If embedded 4-core shielding wire cannot go through the wired controller, it can use signal switching for connection and make sure the wires are reliable and firm. The tightening torque range of the screw is0.8~1.2N .m

(8~12 kgf . cm).

Attached connecting wires for the signal receiving panel

4-core shielding wire embedded in the wall

※ Back cover installation

1) Use straight head screwdriver to insert into the buckling position in the bottom of a wired controller, and spin the screwdriver to take down the back cover. (Pay attention to spinning direction, if not you maybe damage the back cover.)

Buckling position

Back cover

Straight head screwdriver

Front cover

2) Use three GB950-86 M4X20 screws to directly install the back cover on the wall.

Screw hole installed on the wall,use three

GB950-86 M4X20

3) Use two M4X25 GB823-88screws to install the back cover on the 86 electrician box, and use one GB950-86

M4X20 screw for fixing the wall.

47

Screw hole fixed on the wall,use one

GB950-86 M4X20

Screw hole installed on 86 Electrician box, use two M4X25

GB823-88

4) Adjust the length of two plastic screw bars in the accessory to be the standard length from the electrical box screw bar to the wall. Make sure when install the screw bar to the electrical box screw bar, make it as flat as the wall.

86 Electrician box

Back cover

Signal switching wires

Notes: 1.Use cross head screws to fix the wired controller bottom cover in the electric control box through the screw bar. Make sure the wired controller bottom cover is on the same level after installation, and then install the wired controller back to the bottom cover.

2. Over fasten the screw will lead to deformation of the back cover.

※ Wiring

1) Wiring, three outlet positions

2) Shielded wiring

48

3) Avoid water enters into the wired controller, use trap and putty to seal the connectors of wires during wiring installation.

When under installation, reserve a certain length of the connecting wire for convenient to take down the wired controller while during maintenance.

※ Front cover installation

1) After adjusting the front cover and then buckle the front cover; avoid clamping the communication switching wire during installation.

2) Correct install the back cover and firmly buckle the front cover and back cover, if not you maybe make the front cover drop off.

※ Wired controller initial parameters setting:

1.

Change the related functions of the controller through adjusting the initial parameters, details refer to table 1

2. The wired controller initial parameter includes two codes "XY", the first code "X" means function class, and the second code "Y" means the detailed configuration of this function.

3. Setting method:

1）Simultaneously press "Mode" and "Fan" button of the wired controller for 5 seconds to enter the parameter setting state;

2) The value of this first code "X" is "0"; press the temperature setting button UP and DOWN to adjust the second code value;

3) After setting the second code value, press 26/OK button to switch the first code to the next value;

4) When the first code value is "6", press 26/OK button again to exit the parameters setting.

4. The parameters setting function only under the situation which needs to adjust the default functions' setting states; otherwise there is no need to do the setting.

Table 1

Firs t cod e

Functions

0 1

Second code

2 3 4

0 Cool-only/ Cool-Heat selection

Cool-Heat

(Default)

Cool-only / /

1

2

Indoor unit communication address setting

Auto-restart

Yes (Default)

Yes (Default)

None

None

/

/

/ /

3

5

Air filter cleaning reminding function

Cancel the reminding function

Yes (Default)

1250 hours

None

2500 hours

(Default)

/

/

5000 hour s

/

/

1000

0 hours

/

6

Remote receiving function

Centigrade/

Fahrenheit display

Centigrade Fahrenheit / / /

49

16. Error Code

Error code for 10 ton and above

Type Content

Error

Error

Error

Error

Error

Normal

Normal

Normal

Error

Error

Standby

Constraint cool

Run

Compressor phase sequence error or phase default

Outdoor coil temp. sensor in sys. A error

Outdoor coil temp. sensor in sys. B error

Indoor coil temp. sensor in sys. A error

Indoor coil temp. sensor in sys. B error

Indoor temp. sensor error

Outdoor ambient temp. sensor error

Error Wire controller output error

Protection Overcurrent protection in sys. A

Protection Overcurrent protection in sys. B

Protection Overcurrent protection for indoor fan

Protection Comprehensive protection for outdoor fan

Protection Protection for Hi./Lo. Pressure or exhaust temp. in sys. A

Protection Protection for Hi./Lo. Pressure or exhaust temp. in sys. B

Protection T2 evaporator Hi-temperature protection stop outdoor unit fan

Protection T2 evaporator Hi- temperature protection then stop outdoor unit fan and compressor

Protection Protection for condenser Hi-temp. in sys. A

Protection Protection for condenser Hi-temp. in sys. B

Protection Anti-freezing protection for evaporator in sys. A

Protection Anti-freezing protection for evaporator in sys. B

Protection Defrosting

Code Remarks

--

On

10.

E0 Manual reset

E1 Manual reset

E2 Manual reset

E5 Manual reset

E6 Manual reset

E9 Manual reset

EA Manual reset

Eb Manual reset

P0 Auto reset

P1 Auto reset

P2 Auto reset

P3 Auto reset

P4 Comprehensive protection in sys. A

P5 Comprehensive protection in sys. B

P6 Auto reset

P7 Auto reset

P8 Auto reset

P9 Auto reset

Pc Auto reset

Pd Auto reset dF Auto reset

50

16.2 Troubleshooting

For 10 ton and above

Item Content

1 Indoor fan motor didn ’t run.

2 Compressor di dn’t run.

3 T3 temp sensor error.

4 Check if the low pressure protection is normal.

Error code

--

--

EA

--

5 Outdoor fan motor did n’t run.

6 Four ways valve didn ’t work.

--

--

7 Condenser high temp protection.

○

Indoor fan motor do n’t run.

P8,P9

The first check if the power supplier is normal, if all wire connection terminal is loose, if the wired controller set and wire connection are correct, operating as flow process after confirm.

If the heating mode is in preventing cold state for a long time (Cooling mode will not be considered)

No

Yes

Detect if the voltage of the fan on PCB

Replace T2 sensor or check if exist leakage in pipeline. which corresponds to the interface is 208 ~

230V AC between CN6 of INFAN and N.

No

Yes

If the indoor fan contactor is close. Detect if the fuse on PCB is burned off.

Yes No Yes No

Replace motor. Replace contactor. Replace fuse.

Check if the secondary voltage transformer is normal.

Yes No

Replace PCB. Replace transformer.

51

○

Compressor do n’t run (All wires connection are correct and reliable, if power supplier is required range. If compressor do n’t run, you can analysis as flowing)

Detect if the voltage of compressor which corresponds to the interface on PCB is 208 ~

230V AC between CN6 of COMP1, COMP2 and N.

Yes

If indoor fan motor contactor is close.

Yes No

Replace compressor.

Replace contacto r.

Detect if the fuse on PCB is burned off.

Yes

No

No

Replace fuse. Check if the secondary voltage transformer is normal.

Yes No

T3 temp sensor error.

Replac e

PCB.

Replace transformer.

Is the electric resistance of T3 answer for

Appendix 1?

Yes No

Replace PCB.

Replace the T3 sensor.

○

Check if the low pressure protection is normal.

Check if the low pressure protection is normal

(The normal resistance is 0

Ω).

Yes

No

Replace PCB.

1：Check if the refrigerant in system is less.

2：Detect if system have blocked

3：Check if the four-valve is broken.

4：Detect if low-pressure switching ontology is bad, replace the low-voltage switch.

52

Outdoor fan motor do n’t run.

Detect if the voltage of compressor which corresponds to the interface on PCB is 208 ~ 230V

AC between CN6 of OFAN1,OFAN2 and N.

Yes

If the outdoor fan motor contactor is close.

Yes

Replace outdoor fan motor.

No

Replace contacto r.

○

Four ways valve do n’t work.

Detect if the voltage is 208 ~ 230V AC between CN28, CN29 and C on PCB.

Yes

Replace four way valve or coil.

No

Detect if the fuse on PCB is burned off.

Yes

Replace fuse.

Detect if the fuse on PCB is burned off.

Yes

Replac e fuse.

No

No

Check if the secondary voltage transformer is normal.

Yes

Replace PCB.

No

Check if the secondary voltage transformer is normal.

Yes No

Replace

PCB.

Replace transformer.

No

Replace transformer.

53

○

Condenser high temperature protection

Is the electric resistance of condenser high temp sensor answer for Appendix 1?

Yes

Check: Heat dispersion function of outdoor heat exchanger is unqualified:

For example, the heat exchanger is dirty, air-outlet and air-back line is short-circuited, outdoor fan stops running or air speed is over-low, inlet and outlet air is blocked in heat exchanger, etc.

No

Check: There is air or nitrogen in system (air comes from the incomplete vacuum drying, and nitrogen is caused by directly pressurizing to ball valve), symptom: Pressure value of high/low is high, discharge and suction temperature is high, current is large, there may be abnormal noise in compressor, pressure gauge is jittering.

No

Check: System liquid side pipeline is blocked, for example, pipe is squashed or body of valve is blocked, or stop valve has not been opened

(this situation often happens under high-pressure protection firstly).

No

Replace the Outdoor PCB.

No

Replace the sensor

Yes

Remove the problem

Yes

Remove the problem

Yes

Remove the problem

54

17. Accessories

Nam e of accessories

Manual

Drain outlet

Snap ring

Drain pipe

KCT-02.1 SR

Qty

1

1

1

1

1

Shae

18. Maintenance and Upkeep

Regular maintenance and upkeep

Some regular maintenance and upkeep have been carry on by user, includes: change the one-time dust filter, clean casing, wash condenser and replace a new belt, as well as do some test for the equipment.

Model

10 Ton

15 Ton

20 Ton

30Ton

A

395mm

576mm

525mm

925mm

Note：At least 1m flame resistant layer must be laid at the end of the air duct internal surface.

Regulating belt of rate of tension, inner fan Refer to the following Fig. fixed bolt of electric motor ’s supporting slide was loosened, following electric motor was droved, belt of rate of tens ion will begin change.

Method of belt tensioning using belt tension indicator

Calculate the deflection in mm on a basis of 16mm per meter of center distance

Center distance (m) ×16=deflection (mm).

55

For required to deflection belt 16 mm per meter of span

Belt section

SPA

SPB

Small pulley diameter

(mm)

80 to132

140 to 224

Newton

(N)

25 to 35

45 to 65

Kilogram-force

(kgf)

NOTE：The belt which is too tight or too loose may generate noise and be harmful to the unit.

Dismantle the air filter.

Twist of screws and up the plate that is gets out.

2.5 to 3.6

4.6 to 6.6

Upon loose the filter-baffle-plate, the filter could be pulled out along the supporting slot.

10~30ton

Clean the air filter (Vacuum cleaner or pure water may be used to clean the air filter. If the dust accumulation is too heavy, please use soft brush and mild detergent to clean it and dry out in cool place).

56

The air-in side should face up when using vacuum cleaner.

The air-in side should face down when using water.

CAUTION: Do not dry out the air filter under direct sunshine or with fire.

Re-install the air filter

Condenser coil

Unfiltered air circulates through the unit's condenser coil and can cause the coil's surface to become clogged with dust, dirt, etc. To clean the coil, vertically (i.e., with the fins) stroke the coil surface with a soft-bristled brush. Be sure to keep all vegetation away from the condenser coil area.

Maintenance performed by serviceman.

To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the entire system at least once each year and any other time that you feel one is needed. Your serviceman should examine these areas of your unit:

Filters

Motors and drive system components Economizer gaskets (for possible replacement) Safety controls

(for mechanical cleaning)

Electrical components and wiring (for possible replacement and connection tightness)

Condensate drain (for cleaning)

Unit duct connections (to see that they are physically sound and sealed to the unit casing) Unit mounting support (for structural integrity)

The unit (for obvious unit deterioration)

CAUTION:

Do not operate the unit without the evaporator fan access panel in place. Reinstall the access panel after performing any maintenance. Operating the unit without the access panel may result in severe personal injury or death.

57

Appendix :

1. Indoor Temp. and Pipe Temp. Sensor Resistance Value Table (10 ton and above)

ºC

K Ohm

ºC

K Ohm

ºC

K Ohm

ºC

-20 115.266

20 12.6431

60 2.35774

100

62.2756

58.7079

56.3694

52.2438

49.3161

46.5725

44.0000

41.5878

39.8239

24.1932

22.5662

21.8094

20.7184

19.6891

18.7177

17.8005

16.9341

37.1988

35.2024

33.3269

31.5635

29.9058

28.3459

26.8778

25.4954

16.1156

15.3418

14.6181

13.9180

13.2631

108.146

101.517

96.3423

89.5865

84.2190

79.3110

74.5360

70.1698

66.0898

36

37

38

51

52

53

54

47

48

49

50

55

56

57

58

59

43

44

45

46

39

40

41

42

30

31

32

33

34

35

21

22

23

24

25

26

27

28

29

11

12

13

14

7

8

9

10

15

16

17

18

19

5

6

3

4

-1

0

1

2

-4

-3

-2

-10

-9

-8

-7

-6

-5

-19

-18

-17

-16

-15

-14

-13

-12

-11

7.97078

7.62411

7.29464

6.98142

6.68355

6.40021

6.13059

5.87359

5.62961

3.88673

3.73476

3.58962

3.45097

3.31847

3.19183

3.07075

2.95896

5.39689

5.17519

4.96392

4.76253

4.57050

4.38736

4.21263

4.04589

2.84421

2.73823

2.63682

2.53973

2.44677

12.0561

11.5000

10.9731

10.4736

10.000

9.55074

9.12445

8.71983

8.33566

76

77

78

91

92

93

94

87

88

89

90

95

96

97

98

99

83

84

85

86

79

80

81

82

70

71

72

73

74

75

61

62

63

64

65

66

67

68

69

1.64691

1.59068

1.53668

1.48481

1.43498

1.38703

1.34105

1.29078

1.25423

0.93662

0.90753

0.87950

0.85248

0.82643

0.80132

0.77709

0.75373

1.21330

1.17393

1.13604

1.09958

1.06448

1.03069

0.99815

0.96681

0.73119

0.70944

0.68844

0.66818

0.64862

2.27249

2.19073

2.11241

2.03732

1.96532

1.89627

1.83003

1.76647

1.70547

116

117

118

127

128

129

130

131

132

133

134

135

136

137

138

139

119

120

121

122

123

124

125

126

110

111

112

113

114

115

101

102

103

104

105

106

107

108

109

0.47256

0.45957

0.44699

0.43482

0.42304

0.41164

0.40060

0.38991

0.37956

0.29974

0.29216

0.28482

0.27770

0.27078

0.26408

0.25757

0.25125

0.36954

0.35982

0.35042

0.3413

0.33246

0.32390

0.31559

0.30754

0.24512

0.23916

0.23338

0.22776

0.22231

K Ohm

0.62973

0.61148

0.59386

0.57683

0.56038

0.54448

0.52912

0.51426

0.49989

0.48600