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Bryant AIR CONDITIONERS 564A User Manual

Page 11

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B.

For 460-v Motors

The motor leads are color coded as follows:

3-SPEED (060 ONLY)

2-SPEED

black = high speed

black = to purple

-

yellow = line

orange = medium speed

purple = to black

blue = low speed

red = line

To change the speed of the blower motor (BM) from low speed to
high speed, removethe red lead from the indoor-fan relay (aIFR).
Insulate the red lead to avoid contact with any chassis parts.
Separate the black lead from the purple lead. Connect the black
lead to the IFR. Insulate the purple lead to avoid contact with any
chassis parts.

V.

UNIT CONTROLS

All compressors have the following internal-protection controls.

A.

HIGH-PRESSURE RELIEF VALVE

This valve opens when the pressure differential between the low
and high side becomes excessive.

B.

COMPRESSOR OVERLOAD

This overload interrupts power to the compressor when either the
current or internal temperature become excessive, and automati-
cally resets when the internal temperature drops to a safe level.

This overload may require up to 60 minutes (or longer) to reset;
therefore, if the internal overload is suspected of being open,
disconnect the electrical power to the unit and check the circuit
through the overload with an ohmmeter or continuity tester.

VI.

SEQUENCE OF OPERATION

A.

FAN OPERATION

The FAN switch on the thermostat controls indoor fan operation.
When the FAN switch is placed in the ON position, the IFR
(indoor-fan relay) is energized through the G terminal on the
thermostat. The normally-open contacts close, which then provide
power to the indoor (evaporator) fan motor (IFM). The IFM will
run continuously when the FAN switch is set to ON.

When the FAN switch is set to AUTO, the thermostat deenergizes
the IFR (provided there is not a call for cooling). The contacts open
and the IFM is deenergized. The IFM will be energized only when
there is a call for cooling, or if the unit is equipped with accessory
electric heat, the indoor-fan motor will also run while he accessory
electric heat is energized.

NOTE:

564A030 and 060 units are equipped with a time-delay

relay. On these units, the indoor fan remains on for 30 seconds
after G or Y is deenergized.

TABLE 3—ELECTRICAL DATA

UNIT 564A

SIZE

V-PH-HZ

VOLTAGE

RANGE

COMPRESSOR

OFM

IFM

ELECTRIC HEAT

POWER SUPPLY

DISCONNECT SIZE

Min

Max

RLA

LRA

FLA

FLA

Nominal kW*

FLA

MCA

MOCP

FLA

LRA

024

208/230-1-60

187

254.00

10.9

61

0.90

2.4

-/-

3.8/5.0

7.5/10

-/-

18.1/20.8
36.1/41.7

16.9/16.9
25.6/29.0
48.1/55.1

20/20
30/30
50/60

16/16
24/27
44/51

68

030

208/230-1-60

187

254

15.2

69.4

1.5

2.4

-/-

3.8/5.0

7.5/10

11.3/15.0

-/-

18.1/20.8
36.1/41.7
54.2/62.5

22.9/22.9
25.6/29.0
48.1/55.1
70.7/81.1

30/30
30/30
50/60

80/90†

22/22
24/27
44/51
65/75

79

036

208/230-1-60

187

254

15.9

86.0

1.5

2.8

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

18.1/20.8
36.1/41.7
54.2/62.5
72.2/83.3

24.2/24.2
26.1/29.5
48.6/55.6
71.2/81.6

93.6/107.7

30/30
30/30
50/60

80/90†

100/110†

23/23
24/27
45/51
66/75
86/99

96

208/230-3-60

187

254

8.9

64.5

1.5

2.8

-/-

3.8/5.0

7.5/10.0

11.3/15

15.0/20.0

-/-

10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

15.4/15.4
16.5/18.5
29.6/33.6
42.6/48.6
55.6/63.6

20/20
20/20
30/35
45/50

60/70†

15/15
15/17
27/31
39/45
51/59

74

042

208/230-1-60

187

254

18.5

97.6

1.5

2.8

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

18.1/20.8
36.1/41.7
54.2/62.5
72.2/83.3

27.4/27.4
27.4/29.5
48.6/55.6
71.2/81.6

93.8/107.7

35/35
35/35
50/60

80/90†

100/110†

26/26
26/27
45/51
66/75
86/99

107

208/230-3-60

187

254

10.9

73.0

1.5

2.8

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

17.9/17.9
17.9/18.5
29.6/33.6
42.6/48.6
55.6/63.6

25/25
25/25
30/35
45/50

60/70†

17/17
17/17
27/31
39/45
51/59

83

048

208/230-1-60

187

254

21.3

107.0

1.5

4.2

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

18.1/20.8
36.1/41.7
54.2/62.5
72.2/83.3

32.3/32.3
32.3/32.3
50.4/57.3
72.9/83.4

95.5/109.4

40/40
40/40
60/60

80/90†

100/110†

31/31
31/31
46/53
67/77

88/101

121

208/230-3-60

187

254

12.3

73.0

1.5

4.2

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

21.1/21.1
21.1/21.1
31.3/35.3
44.3/50.4
57.4/65.4

25/25
25/25
35/60
45/60

60/70†

21/21
21/21
29/32
41/46
53/60

87

060

230-1-60

207

254

28.8

147

1.4

5.8

-

5

10
15
20

-

20.8
41.7
62.5
83.3

43.2
43.2
59.3
85.3

111.4

60
60
60

90†

125†

41
41
55
78

102

164

208/230-3-60

187

254

16.3

114

1.4

5.8

-/-

3.8/5.0

7.5/10

11.3/15

15.0/20.0

-/-

10.4/12

23.8/24.1
31.3/36.1
47.7/48.1

27.5/27.5
27.5/27.5
33.3/37.3
46.3/52.3
59.3/67.3

35/35
35/35
35/40
50/60

60/70†

27/27
27/27
31/34
43/48
55/62

131

460-3-60

414

508

7.4

64.0

0.7

2.6

-

5

10
15
20

-

6

12
18
24

12.6
12.6
18.3
25.8
33.3

20
20
20
30
35

15
15
18
24
31

70
71
71
71
71

(See legend following Electrical Data charts)

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