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INDOOR

WB 

°

F*

OUTDOOR DB

°

F

55

60

65

70

75

80

85

90

95

100 105 110 115

50

9

7

52

12

10

6

54

14

12

10

7

56

17

15

14

10

6

58

20

18

16

13

9

5

60

23

21

19

16

12

8

6

62

26

24

22

19

16

12

8

5

64

29

27

24

21

18

15

11

9

6

66

32

31

30

24

23

18

15

11

9

6

68

35

33

30

27

24

21

19

16

14

12

9

6

70

35

33

30

28

25

22

20

18

15

13

11

8

72

35

33

30

28

26

24

20

20

17

15

14

74

34

31

30

27

25

23

22

20

18

76

35

33

31

29

27

26

25

23

*Evaporator Entering Air 

°

F

 TABLE 3 - Superheat Value

SUCTION

PRESSURE

PSIG

(Service Port)

SUCTION SERVICE VALVE SUPERHEAT

0**

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

61.5

35

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

64.2

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

67.1

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

73

70.0

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

73

75

73.0

43

45

47

49

51

53

55

57

59

61

63

63

67

69

71

73

75

77

76.0

45

47

49

51

53

55

57

59

61

63

65

67

69

71

73

75

77

79

79.2

47

49

51

53

55

57

59

61

63

65

67

69

71

73

75

77

79

81

82.4

49

51

53

55

57

59

61

63

65

67

69

71

73

75

77

79

81

83

** Saturation Temperature

 TABLE 4 - Temperature and Pressure

TEMP.

°

F

PRESSURE

PSIG

TEMP.

°

F

PRESSURE

PSIG

TEMP.

°

F

PRESSURE

PSIG

TEMP.

°

F

PRESSURE

PSIG

TEMP.

°

F

PRESSURE

PSIG

45

76.02

60

101.62

75

132.22

90

168.40

105

210.75

46

77.58

61

103.49

76

134.45

91

171.02

106

213.81

47

79.17

62

105.39

77

136.71

92

173.67

107

216.90

48

80.77

63

107.32

78

138.99

93

176.35

108

220.02

49

82.39

64

109.26

79

141.30

94

179.06

109

223.17

50

84.03

65

111.23

80

143.63

95

181.80

110

226.35

51

85.69

66

113.22

81

145.99

96

184,56

111

229.56

52

87.38

67

115.24

82

148.37

97

187.36

112

232.80

53

89.08

68

117.28

83

150.78

98

190.18

113

236.08

54

90.81

69

119.34

84

153.22

99

193.03

114

239.38

55

92.56

70

121.43

85

155.68

100

195.91

115

242.72

56

94.32

71

123.54

86

158.17

101

198.82

116

246.10

57

96.11

72

125.67

87

160.69

102

201.76

117

249.50

58

97.93

73

127.83

88

163.23

103

204.72

118

252.94

59

99.76

74

130.01

89

165.80

104

207.72

119

256.41

 TABLE 5 - R-22 Saturation Properties

550.46-N1YI

Unitary Products Group

7

Summary of Contents for H*RA

Page 1: ...ir Conditioning and Refrigeration Institute Using unmatched components may not only affect the performance of the system but may also void the warranty of the equipment Do not install any coil in a furnace which is to be operated during the heating season without attaching the refrigerant lines to the coil Allowing the coil charge to enter the refrigerant lines prevents excessive refrigerant press...

Page 2: ...utdoor coil can be eliminated by placing the outside unit where the wind does not blow across the unit Trees shrubs corners of buildings and fences standing off from the coil can reduce capacity loss due to wind chill effect Provide ample clearance from shrubs to allow adequate air to pass across the outdoor coil without leaves or branches being pulled into the coil Consideration should be given t...

Page 3: ... and permitted to flow through tubing during brazing to displace air and prevent oxidation Remove the Schrader valve cores from the service valves Remove the plugs from the service valve field tubing connec tions Clean the joints to be brazed NOTE Do not overheat the connection to be brazed as this can cause improper flow of solder resulting in a weak and leaking joint Never apply heat directly to...

Page 4: ...nd the refrigerantlines maybeconnectedpertheoutdoorunitinstruction However if another orifice should be used see the coil instruction for details to change to change the orifice in the coil OPENING BASE VALVES All models in this series have brass service valves These valves are not back seating Opening or closing valve does not close service port Service ports have Schrader valves for gauge connec...

Page 5: ... Figures 3 and 4 5 Ground the outdoor unit using the ground lug provided Unless the outdoor unit is grounded through proper wiring to the service entrance ground a suitable separate ground should be provided at the outdoor unit C O N T A C T O R S T A R T R E L A Y N o t o n a l l M o d e l s F A N M O T O R P L U G D U A L R U N F A N C A P A C I T O R S T A R T C A P A C I T O R N o t o n a l l ...

Page 6: ...ined as follows 1 Determine outdoor unit charge from tabular data sheet 2 Determine indoor coil adjustment from tabular data sheet 3 Calculate the line charge using Table 2 factors Calculate over 15 feet of sweat lines for sweat connect units NOTE For sweat connect lines the line charge over 15 feet should be included on the data plate and must be added to the system 4 Total system charge item 1 i...

Page 7: ... 73 75 77 79 79 2 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 82 4 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 Saturation Temperature TABLE 4 Temperature and Pressure TEMP F PRESSURE PSIG TEMP F PRESSURE PSIG TEMP F PRESSURE PSIG TEMP F PRESSURE PSIG TEMP F PRESSURE PSIG 45 76 02 60 101 62 75 132 22 90 168 40 105 210 75 46 77 58 61 103 49 76 134 45 91 171 02 106 213 81 47 79 17...

Page 8: ...correctly SYSTEM OPERATION CHECK OUT STEP 1 With thermostat set to the OFF position close disconnect switch or switches to complete circuits to condens ing unit furnace or air handler Set thermostat to call for cooling STEP 2 After the system starts check the voltage and amperage at the condensing unit contactor STEP 3 If voltage is not within 10 of rated voltage or amperage greatly exceeds namepl...

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