Bryant AIR CONDITIONERS 564A User Manual
Page 11
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)
—11—