Bryant SINGLE PACKAGED HEAT PUMP UNITS 657A User Manual
Page 27
f. Reassemble motor into housing. Be sure setscrews are
tightened on motor shaft flats and not on round part of
shaft.
g. Reinstall unit access panel.
4. Restore electrical power to unit. Start unit and check for
proper blower rotation and motor speeds during heating and
cooling cycles.
D.
OUTDOOR COIL, INDOOR COIL, AND CONDEN-
SATE DRAIN PAN
Inspect the outdoor coil, indoor coil, and condensate drain pan at
least once each year. See Unit Top Removal section.
The coils are easily cleaned when dry; therefore, inspect and clean
the coils either before or after each cooling season. Remove all
obstructions, including weeds and shrubs, that interfere with the
airflow through the outdoor coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,
clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils with a mild detergent-and-water solution.
Rinse coils with clear water, using a garden hose. Be careful not to
splash water on motors, insulation, wiring, or air filter(s). For best
results, spray outdoor coil fins from inside to outside the unit. On
units with an outer and inner (2 row) outdoor coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit
base.
Inspect the drain pan and condensate drain line when inspecting
the coils. Clean the drain pan and condensate drain by removing all
foreign matter from the pan. Flush the pan and drain tube with
clear water. Do not splash water on the insulation, motor, wiring,
or air filter(s). If the drain tube is restricted, clear it with a
“plumbers snake” or similar probe device. Ensure that the auxiliary
drain port above the drain tube is also clear
TABLE 13E—SUPERHEAT CHARGING TABLE, UNIT 042
TEMP (F)
AIR ENT
COND
EVAP AIR – CFM
1400
EVAP AIR – Ewb (F)
56
58
60
62
64
66
68
70
72
74
76
65
SPH
13.5
13.5
13.5
17.1
20.7
24.3
25.7
27.1
28.5
27.8
27.0
70
11.4
11.4
11.5
15.1
18.7
22.3
23.6
25.1
26.4
26.1
25.8
75
9.4
9.4
9.4
13.0
16.5
20.1
21.6
23.0
24.4
24.5
24.6
80
8.9
8.9
8.9
12.4
16.0
19.4
21.0
22.4
23.8
24.0
24.0
85
8.2
8.2
8.2
11.8
15.3
18.7
20.2
21.8
23.3
23.4
23.4
90
7.7
7.7
7.7
10.8
13.7
16.7
18.7
20.7
22.7
22.7
22.9
95
7.2
7.2
7.2
9.7
12.2
14.6
17.2
19.7
22.2
22.3
22.3
100
6.6
6.6
6.6
9.6
12.6
15.5
17.6
19.7
21.6
21.7
21.7
105
6.1
6.1
6.1
9.6
13.1
16.5
18.0
19.5
21.1
21.1
21.2
110
—
—
—
7.0
9.9
13.0
15.0
17.1
19.1
19.8
20.6
115
—
—
—
—
6.9
9.4
11.9
14.5
17.0
18.5
20.0
Ewb-Entering Wet Bulb
SPH-Superheat at Compressor (F)
– -Do not attempt to charge system under these conditions as refrigerant slugging may occur.
TABLE 13F—SUPERHEAT CHARGING TABLE, UNIT 048–301
TEMP (F)
AIR ENT
COND
EVAP AIR – CFM
1600
EVAP AIR – Ewb (F)
56
58
60
62
64
66
68
70
72
74
76
65
SPH
26.3
27.0
27.6
28.6
29.6
30.5
30.9
31.3
31.7
31.2
30.7
70
24.0
23.8
23.6
25.0
26.4
27.8
28.4
29.0
29.7
29.6
29.5
75
19.7
19.7
19.7
21.4
23.2
25.0
25.9
26.8
27.6
27.9
28.2
80
15.8
15.8
15.8
17.6
19.4
21.2
22.7
24.1
25.6
26.2
26.9
85
12.0
12.0
12.0
13.8
15.6
17.5
19.5
21.5
23.5
24.5
25.6
90
7.5
7.5
7.5
9.4
11.3
13.2
16.3
19.3
22.4
23.3
24.2
95
—
—
—
5.0
7.0
9.0
13.1
17.1
21.2
22.0
22.8
100
—
—
—
—
—
—
9.4
14.3
19.1
20.3
21.4
105
—
—
—
—
—
—
5.7
11.4
17.1
18.6
20.1
110
—
—
—
—
—
—
—
9.0
13.5
15.8
18.0
115
—
—
—
—
—
—
—
6.7
10.0
13.0
16.0
Ewb-Entering Wet Bulb
SPH-Superheat at Compressor (F)
– -Do not attempt to charge system under these conditions as refrigerant slugging may occur.
TABLE 13G—SUPERHEAT CHARGING TABLE, UNIT 048–311
TEMP (F)
AIR ENT
COND
EVAP AIR – CFM
1550
EVAP AIR – Ewb (F)
56
58
60
62
64
66
68
70
72
74
76
65
SPH
39.4
39.4
40.4
40.6
40.6
40.8
41.0
40.8
40.7
40.2
39.9
70
35.3
35.8
36.8
37.6
37.7
37.8
38.4
38.2
38.4
38.0
37.6
75
31.7
31.4
32.6
34.0
34.5
35.1
35.3
35.5
35.6
35.8
35.5
80
28.1
28.0
28.8
29.8
30.9
31.6
32.8
32.9
32.7
33.0
33.4
85
24.7
24.0
24.6
26.1
27.5
28.3
29.9
30.3
30.5
30.2
30.7
90
21.2
20.8
19.3
21.0
23.4
25.0
26.6
27.4
27.9
28.1
28.0
95
16.5
16.1
16.3
16.5
18.8
21.2
22.7
23.9
25.4
25.7
25.9
100
12.4
7.5
5.6
11.5
14.9
16.8
19.1
21.4
22.0
23.3
23.5
105
—
—
—
—
9.7
12.7
15.2
18.3
19.5
20.2
21.1
110
—
—
—
—
—
7.7
11.2
13.7
16.7
17.8
18.5
115
—
—
—
—
—
—
—
7.3.
10.2
11.8
14.3
Ewb-Entering Wet Bulb
SPH-Superheat at Compressor (F)
– -Do not attempt to charge system under these conditions as refrigerant slugging may occur.
—27—