Trane 4TTR5030N - Page 15

18-AC123D1-1B-EN 15
LIFT
STEP 1 - Use the refrigerant line total length
and lift measurements from Section 5.3.
Total Line Length = __________ Ft.
Vertical Change (Lift) = __________ Ft.
14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)
Design Subcooling Value = __________º F Subcooling Correction = __________º F
(from nameplate or Service Facts)
Final Subcooling Value = __________º F
STEP 2 - Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below.
018 Units
50
4°
40
30
1°
25
Use Design Subcooling
1°
15
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
Add 1°
Add 1°
Add 1°
Add 2°
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
024 Units
50
1°
40
30
25
Use Design Subcooling
15
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
Add 1°
Add 1°
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
Add 2°
REFRIGERANT LINE LIFT (FT)
030 Units
50
1°
40
30
25
Use Design Subcooling
15
1°
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
Add 1°
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
Add 2°
Add 1°
036 Units
50
4°
40
30
25
Use Design Subcooling
15
1°
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
Add 1°
Add 2°
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
Add 1°
042 Units
50
40
30
25
Use Design Subcooling
15
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
Add 1°
Add 1°
Add 1°
Add 2°
Add 4°
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
048 Units
50
1°
40
1°
30
25
Use Design Subcooling
15
10
0
20 30 40 50 60 70 80 90 100 110 120130 140 150
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
Add 4°
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
Add 2°
Add 1°
Add 1°
060 Units
50
1°
40
1°
30
25
Use Design Subcooling
15
10
0
1°
20 30 40 50 60 70 80 90 100110 120130 140 150
Add 4°
Add 2°
Add 1°
Add 1°
REFRIGERANT LINE LIFT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]