Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A User Manual
Page 28
E.
OUTDOOR FAN
CAUTION:
Keep the outdoor fan free from all obstruc-
tions to ensure proper cooling operation. Never place
articles on top of the unit. Damage to unit may result.
1. Remove 2 screws at bottom of outdoor air intake grille and
remove plastic grille.
2. Inspect the fan blades for cracks or bends.
3. If fan needs to be removed, loosen the setscrew and slide
the fan off the motor shaft.
4. When replacing fan blade, position blade so that the leading
edge is 2-in. back from outdoor inlet grille or 1/2-in.
maximum fro fan deck (See Fig. 25).
5. Ensure that setscrew engages the flat area on the motor shaft
when tightening
6. Replace grille.
F.
ELECTRICAL CONTROLS AND WIRING
Inspect and check the electrical controls and wiring annually. Be
sure to turn off the electrical power to the unit and install lockout
tag.
Remove the control/blower and compressor compartment access
panels to locate all the electrical controls and wiring. Check all
electrical connections for tightness. Tighten all screw connections.
If any smoky or burned connections are noticed, disassemble the
connection, clean all the parts, restrip the wire end and reassemble
the connection properly and securely.
After inspecting the electrical controls and wiring, replace the
access panel. Start the unit, and observe at least one complete
heating cycle and one complete cooling cycle to ensure proper
operation. If discrepancies are observed in either or both operating
cycles, or if a suspected malfunction has occurred, check each
electrical component with the proper electrical instrumentation.
Refer to the unit wiring label when making these checkouts.
NOTE:
Refer to the heating and/or cooling sequence of operation
in this publication as an aid in determining proper control
operation
TABLE 13H—SUPERHEAT CHARGING TABLE, UNIT 060
TEMP (F)
AIR ENT
COND
EVAP AIR – CFM
1800
EVAP AIR – Ewb (F)
56
58
60
62
64
66
68
70
72
74
76
65
SPH
21.0
21.0
21.0
22.8
24.7
26.5
27.8
29.1
30.4
29.5
28.6
70
16.5
16.5
16.5
18.8
21.1
23.5
25.2
27.0
28.8
28.2
27.6
75
12.0
12.0
12.0
14.8
17.6
20.4
22.7
24.9
27.2
26.9
26.6
80
10.5
10.5
10.5
12.7
14.9
17.1
19.8
22.5
25.2
25.4
25.5
85
9.0
9.0
9.0
10.6
12.3
13.9
17.0
20.0
23.1
23.8
24.5
90
4.5
4.5
4.5
6.5
8.5
10.5
14.3
18.1
21.9
22.7
23.5
95
—
—
—
—
4.8
7.2
11.7
16.2
20.7
21.6
22.5
100
—
—
—
—
—
3.6
8.6
13.6
18.6
20.0
21.4
105
—
—
—
—
—
—
5.5
11.1
16.6
18.5
20.4
110
—
—
—
—
—
—
—
10.0
15.5
17.5
19.4
115
—
—
—
—
—
—
—
9.2
14.7
16.5
18.5
Ewb-Entering Wet Bulb
SPH-Superheat at Compressor (F)
– -Do not attempt to charge system under these conditions as refrigerant slugging may occur.
Fig. 30—Required Suction Tube Temperature (F) *
C95030
Required Suction Tube Temperature
SUPERHEAT
TEMP (F)
SUCTION PRESSURE AT SERVICE PORT (Psig)
61.5
64.2
67.1
70
73
76
79.2
82.4
85.7
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
32
67
69
71
73
75
77
79
81
83
34
69
71
73
75
77
79
81
83
85
36
71
73
75
77
79
81
83
85
87
38
73
75
77
79
81
83
85
87
89
40
75
77
79
81
83
85
87
89
91
NOTE: Measure suction tube temperature with accurate superheat ther-
mometer or thermistor-type thermometer
—28—