American Standard 4A7A4018N Installation And Operation Manual page 19

For 018L, 024/25L, 030/31L, 036/37L, 036/37M, 042/43L, 048L and 060L Models:
018 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
15
10
0
10 20
TOTAL REFRIGERANT LINE LENGTH (FEET)
030 & 031 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
15
10
0
10 20
TOTAL REFRIGERANT LINE LENGTH (FEET)
042 & 043 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
15
Use Design Subcool Value
10
0
10 20
TOTAL REFRIGERANT LINE LENGTH (FEET)
060 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
15
10
Design Add 1° of Subcooling
0
10 20
TOTAL REFRIGERANT LINE LENGTH (FEET)
STEP 3 - Stabilize the system by operating for a
minimum of 20 minutes.
At startup, or whenever charge is removed or
added, the system must be operated for a mini-
mum of 20 minutes to stabilize before accurate
measurements can be made.
11-AC11D1-9E-EN
Add 3°
Add 2°
Add 1° of Subcooling
Use Design Subcool Value
25 30 40 60
Add 4°
Add 3°
Add 2° of Subcooling
Add 1° of Subcooling
Use Design Subcool Value
25 30 40 60
Add 6°
Add 5°
Add 3° of Subcooling
Add 2° of Subcooling
Add 1° of Subcooling
25 30 40 60
Add 6°
Add 5° of Subcooling
Add 4° of Subcooling
Add 3° of Subcooling
Add 2° of Subcooling
25 30 40 60
024 & 025 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
Use Design Subcool Value
15
10
0
10 20 25
TOTAL REFRIGERANT LINE LENGTH (FEET)
036 & 037 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
15
Use Design Subcool Value
10
0
10 20 25
TOTAL REFRIGERANT LINE LENGTH (FEET)
048 Models
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
60
50
40
30
25
20
Add 1° of Subcooling
15
10
Use Design Subcool Value
0
10 20 25
TOTAL REFRIGERANT LINE LENGTH (FEET)
Design Subcooling Value = __________º F
(from nameplate or Service Facts)
Subcooling Correction = __________º F
Final Subcooling Value = __________º F
20 MIN.
Add 4°
Add 2°
Add 1° of Subcooling
30 40 60
Add 5°
Add 4°
Add 3° of Subcooling
Add 2°
Add 1° of Subcooling
30 40 60
Add 6°
Add 4° of Subcooling
Add 3° of Subcooling
Add 2° of Subcooling
30 40 60
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