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INSTALLATION INSTRUCTIONS
11. If outdoor air temperature or pressure at suction
valve changes, charge to new suction line
temperature indicated on chart.
12. Optimum performance will be achieved when
the operating charge produces 5_ to 6_F
suction superheat at suction service valve
with 82_F (28_C) outdoor ambient and 80_F
(27_C) dry bulb (67_F / 19_C) wet bulb) indoor
temperature (DOE "B" test conditions) at rated
airflow.
Figure 13
SUPERHEAT CHARGING TABLE ˚F
EVAPORATOR ENTEREING AIR ˚F AT WB
˚F
50 52 54 56 58 60 62 64 66 68 70 72 74 76
Outdoor
Temp
SUPERHEAT ˚F AT LOWSIDE SERVICE PORT
9 12 14 17 20 23 26 29 32 35 37 40 42 45
55
7 10 12 15 18 21 24 27 30 33 35 38 40 43
60
6 10 13 16 19 21 24 27 30 33 36 38 41
65
7 10 13 16 19 21 24 27 30 33 36 39
70
6
9 12 15 18 21 24 28 31 34 37
75
5
80
85
90
95
100
105
110
115
*Optimum performance point, 82°F (28°C) outdoor ambient and (80°F / 27°C dry bulb), (67°F / 19°C wet bulb) indoor conditions. (DOE B Test
Conditions)
Where a dash (-) appears do not attempt to charge system under these conditions or refrigerant slugging may occur. Charge must be
weighed in.
Note: Superheat °F is at low-side service port, Allow a tolerance of ± 3°F (± 1.7°C)
Note: Indoor dry bulb between 70°F and 80°F (21°C and 27°C)
Figure
14
SUCTION PRESSURE AT SERVICE PORT PSIG
108
112
117
SUPER-
HEAT
REQUIRED SUCTION TUBE TEMPERATURE
TEMP ˚F
(MEASURED AT LOW-SIDE SERVICE PORT)
0
35
37
39
2
37
39
41
4
39
41
43
6
41
43
45
8
43
45
47
10
45
47
49
12
47
49
51
14
49
51
53
16
51
53
55
18
53
55
57
20
55
57
59
22
57
59
61
24
59
61
63
26
61
63
65
28
63
65
67
30
65
67
69
14
8 12 15 18 21 25 28 31 35
8 11 15 19 22 26 30 33
5
9 13 16 20 24 27 31
6 10 14 18 22 25 29
8 12 15 20 23 27
5
9 13 17 22 26
6 11 15 20 25
8 14 18 23
121
126
131
139
141
˚F
41
43
45
47
49
43
45
47
49
51
45
47
49
51
53
47
49
51
53
55
49
51
53
55
57
51
53
55
57
59
53
55
57
59
61
55
57
59
61
63
57
59
61
63
65
59
61
63
65
67
61
63
65
67
69
63
65
67
69
71
65
67
69
71
73
67
69
71
73
75
69
71
73
75
77
71
73
75
77
79
C. HEATING MODE
To check system operation during heating cycle, refer to
the Tech Label on outdoor unit. This chart indicates
whether a correct relationship exists between system
operating pressure and air temperature entering indoor
and outdoor units. If pressure and temperature do not
match on chart, system refrigerant charge may not be
correct. Do not use chart to adjust refrigerant charge.
NOTE: When charging is necessary during heating
season, charge must be weighed in accordance with unit
rating plate ±0.6 ounces per foot of a inch liquid line above
or below 15 feet respectively (±17g per 305mm of 10mm
liquid line above or below 4.6m respectively).
SUPERHEAT CHARGING TABLE ˚C
EVAPORATOR ENTEREING AIR ˚C AT WB
˚C
10 11 12 13 14 16 17 18 19 20 21 22 23 24
Outdoor
Temp
SUPERHEAT ˚C AT LOWSIDE SERVICE PORT
5
7
8
9 11 13 14 16 18 19 21 22 23 25
13
4
6
7
8 10 12 13 15 17 18 19 21 22 24
16
3
6
7
18
4
6
21
3
24
27
29
32
35
38
41
43
46
SUCTION PRESSURE AT SERVICE PORT kPA
146
SUPER-
743
774
805
HEAT
REQUIRED SUCTION TUBE TEMPERATURE
TEMP ˚C
(MEASURED AT LOW-SIDE SERVICE PORT)
51
0
2
3
53
1
3
4
55
2
4
5
57
3
5
6
59
4
6
7
61
6
7
8
63
7
8
9
65
8
9
11
67
9
11
12
69
10
12
13
71
11
13
14
73
12
14
15
75
13
15
16
77
14
16
17
79
16
17
18
81
17
18
19
R−410A Split System Heat Pump
9 11 12 13 15 17 18 20 21 23
7
9 11 12 13 15 17 18 20 22
5
7
8 10 12 13 16 17 19 21
3
4
7
8 10 12 14 16 17 19
4
6
8 11 12 14 17 18
3
5
7
9 11 13 15 17
3
6
8 10 12 14 16
4
7
8 11 13 15
3
5
7
9 12 14
3
6
8 11 14
4
8 10 13
836
869
902
957
4
5
6
7
8
5
6
7
8
9
6
7
8
9
11
7
8
9
11
12
8
9
11
12
13
9
11
12
13
14
11
12
13
14
15
12
13
14
15
16
13
14
15
16
17
14
15
16
17
18
15
16
17
18
19
16
17
18
19
21
17
18
19
21
22
18
19
21
22
23
19
21
22
23
24
21
22
23
24
25
428 01 5302 00
971
1005
˚C
9
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
21
21
22
22
23
23
24
24
25
25
26
26
27
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