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11

Table 7 – Required Liquid Line Temperatures

_

F

LIQUID PRESSURE AT

SERVICE VALVE (PSIG)

REQUIRED SUBCOOLING TEMPERATURE (° F)

8

10

12

14

16

18

251

76

74

72

70

68

66

259

78

76

74

72

70

68

266

80

78

76

74

72

70

274

82

80

78

76

74

72

283

84

82

80

78

76

74

291

86

84

82

80

78

76

299

88

86

84

82

80

78

308

90

88

86

84

82

80

317

92

90

88

86

84

82

326

94

92

90

88

86

84

335

96

94

92

90

88

86

345

98

96

94

92

90

88

354

100

98

96

94

92

90

364

102

100

98

96

94

92

374

104

102

100

98

96

94

384

106

104

102

100

98

96

395

108

106

104

102

100

98

406

110

108

106

104

102

100

416

112

110

108

106

104

102

427

114

112

110

108

106

104

439

116

114

112

110

108

106

450

118

116

114

112

110

108

462

120

118

116

114

112

110

474

122

120

118

116

114

112

486

124

122

120

118

116

114

499

126

124

122

120

118

116

511

128

126

124

122

120

118

Table 8 – Superheat Charging (Heat Pump Only)

OUTDOOR TEMP (° F)

EVAPORATOR ENTERING AIR TEMPERATURE (° F WB)

50

52

54

56

58

60

62

64

67

68

70

72

74

76

55

11

11

12

12

12

13

17

20

24

24

25

25

25

25

60

6

6

7

7

7

7

12

16

21

22

23

23

23

23

65

3

7

12

18

19

21

21

22

22

70

7

14

16

18

20

20

20

75

3

11

13

16

18

18

19

82

*6

8

12

15

16

17

85

4

7

11

14

15

16

90

4

8

12

14

15

95

6

10

12

14

100

4

8

11

12

105

3

6

9

11

110

5

7

10

115

3

6

8

*Optimum performance point, 82° F outdoor ambient and (80° F dry bulb),( 67° F wet bulb) indoor conditions. (DOE B Test Conditions)
Where a dash (––) appears do not attempt to charge system under these conditions or refrigerant slugging may occur. Charge must be weighed in.

Note

: Superheat ° F is at low–side service port, Allow a tolerance of ± 3° F

Note

: Indoor dry bulb between 70° F and 80° F

Table 9 – Required Suction–Line Temperature

SUPERHEAT TEMP (° F)

SUCTION PRESSURE AT SERVICE PORT (PSIG)

107.8

112.2

116.8

121.2

126

130.8

138.8

140.8

145.8

0

35

37

39

41

43

45

47

49

51

2

37

39

41

43

45

47

49

51

53

4

39

41

43

45

47

49

51

53

55

6

41

43

45

47

49

51

53

55

57

8

43

45

47

49

51

53

55

57

59

10

45

47

49

51

53

55

57

59

61

12

47

49

51

53

55

57

59

61

63

14

49

51

53

55

57

59

61

63

65

16

51

53

55

57

59

61

63

65

67

18

53

55

57

59

61

63

65

67

69

20

55

57

59

61

63

65

67

69

71

22

57

59

61

63

65

67

69

71

73

24

59

61

63

65

67

69

71

73

75

26

61

63

65

67

69

71

73

75

77

28

63

65

67

69

71

73

75

77

79

30

65

67

69

71

73

75

77

79

81

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 42801510700

Replaces: New

Summary of Contents for N4H4-G

Page 1: ...o follow this warning could result in death serious personal injury and or property damage Never use air or gases containing oxygen for leak testing or operating refrigerant compressors Pressurized mi...

Page 2: ...ance wiring refrigerant piping and service Allow 24 in 609 6 mm clearance to service end of unit and 48 in 1219 2 mm above unit For proper airflow a 6 in 152 4 mm clearance on 1 side of unit and 12 in...

Page 3: ...evacuated to 500 microns to eliminate contamination and moisture in the system Outdoor Unit Connected To Factory Approved Indoor Unit Outdoor unit contains approximate system refrigerant charge for op...

Page 4: ...loth Braze joints using a Sil Fos or Phos copper alloy Table 2 Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters In UNIT SIZE LIQUID RATED VAPOR Connection Diameter Tube Diameter...

Page 5: ...power company for correction of improper voltage See unit rating plate for recommended circuit protection device NOTE Operation of unit on improper line voltage constitutes abuse and could affect uni...

Page 6: ...e electrical disconnect to outdoor unit A crankcase heater is required if refrigerant tubing is longer than 80 ft 23 4 m or when outdoor unit is 20 ft 6 09 m below indoor unit Refer to the Residential...

Page 7: ...tactor is energized Defrost mode is identical to cooling mode except that outdoor fan motor stops and second stage heat is turned on to continue warming conditioned spaces To initiate defrost the defr...

Page 8: ...able 7 Find the point where required subcooling temperature intersects measured liquid service valve pres sure 6 To obtain required subcooling temperature at a specific li quid line pressure add refri...

Page 9: ...EHD4X24AAL EN A D 4X36L21 EHD4X36AAL 3 EN A D W 4X48L21 EHD4X48AAL FEM4X24 BL EHD4X30AAL EN A D W 4X36L17 EHD4X42AAL 5 EHD4X42AAL EHD4X60AAL 3 FMA4P18 A FEM4P30 AL EHD4X30AAL FEM4P36 AL EHD4X48AAL FE...

Page 10: ...3 WLN C W 424CA WLNC484DA WAHL184B WLNC304BA WLNC304BA WLN C W 424CA 3 WLN C W 484CA WLN C W 604DA 3 WAHL244B WAPL304A WLN C W 364BA WAPL364A WLNC484DA WAPL484A FMA4P18 A WAHL304B WLNC364CA WAPL424A...

Page 11: ...3 11 13 16 18 18 19 82 6 8 12 15 16 17 85 4 7 11 14 15 16 90 4 8 12 14 15 95 6 10 12 14 100 4 8 11 12 105 3 6 9 11 110 5 7 10 115 3 6 8 Optimum performance point 82 F outdoor ambient and 80 F dry bulb...

Page 12: ...180 psig low side with 550 psig low side retard S Use hoses with 700 psig service pressure rating S Leak detectors should be designed to detect HFC refrigerant S R 410A refrigerant as with other HFCs...

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