Charging With Refrigerant
Calculating R410A charge
Use the following table and formula when calculating the total R410A charge.
| Selected | Condenser | Condenser flooded charge in kg (lb) for different | |||||||
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| minimum outdoor ambient temperatures |
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Condenser | ambient | summer |
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temp. in | charge in | 4°C (40°F) | ||||||||
model | °C (°F) | kg (lb) | (20°F) | |||||||
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ACCD75214 | 35 | (95) | 2.2 (4.9) | 5.48 (12.1) | 5.85 | (12.9) | 6.03 (13.3) | 6.17 (13.6) | 6.30 (13.9) | |
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ACCD75214 | 40 | (105) | 2.2 (4.9) | 5.48 (12.1) | 5.85 | (12.9) | 6.03 (13.3) | 6.17 (13.6) | 6.30 (13.9) | |
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ACCD75215 | 46 | (115) | 3.85 | (8.5) | 9.57 (21.1) | 10.16 (22.4) | 10.48 (23.1) | 10.70 (23.6) | 10.93 (24.1) | |
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ACCD75216 | 35 | (95) | 1.36 | (3) | 3.08 (6.8) | 3.26 | (7.2) | 3.36 (7.4) | 3.45 (7.6) | 3.49 (7.7) |
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ACCD75218, | 40 | (105) | 1.36 | (3) | 3.08 (6.8) | 3.26 | (7.2) | 3.36 (7.4) | 3.45 (7.6) | 3.49 (7.7) |
ACCD75220* |
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ACCD75217, | 46 | (115) | 2.27(5) | 6.12 (13.5) | 6.53 (14.4) | 6.71 (14.8) | 6.89 (15.2) | 7.03 (15.5) | ||
ACCD75219 |
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* ACCD75220 is CCC certified for use in China.
| Type of fitting or valve - Equivalent length of pipe in m (ft) |
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ACR pipe size (OD) | Gate valve | Standard elbow 90 ° | Reduced coupling | Side outlet T Angle valve | |
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1/2 in | 0.18 (0.6) | 0.43 (1.4) | 0.43 (1.4) | 0.82 (2.7) | 1.83 (6.0) |
5/8 in | 0.21 (0.7) | 0.49 (1.6) | 0.49 (1.6) | 0.91 (3.0) | 2.13 (7.0) |
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| Recommended Line Sizes |
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Equivalent length m (ft) | Line Type | ||
15 | (50) | Discharge line (horizontal) | 5/8 inOD ACR |
Discharge line (vertical) | 1/2 in OD ACR | ||
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| Liquid line | 1/2 in OD ACR |
30 | (100) | Discharge line (horizontal) | 5/8 inOD ACR |
Discharge line (vertical) | 1/2 in OD ACR | ||
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| Liquid line | 1/2 in OD ACR |
16 | (150) | Discharge line (horizontal) | 5/8 inOD ACR |
Discharge line (vertical) | 1/2 in OD ACR | ||
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| Liquid line | 1/2 in OD ACR |
Note: All refrigerant pipes must be straight ACR to have 39 bar (565 psig) or above MWP. Equivalent length of 1/2 in OD discharge line pipe should be kept less than 18 m (60 ft). Total equivalent length of the discharge line should be less than 46 m (150 ft) to prevent excessive hot gas pressure drop which can increase the discharge pressure during hot summer days. To have 61 m (200 ft) total equivalent discharge pipe length the load must be reduced by 5%.
Total charge = Equipment charge + condenser summer charge + condenser flooded charge (for minimum possible ambient temperature) + liquid R410A in liquid pipe
Equipment charge: 1.6 kg (3.5 lb)
InRow RD 10 kW Air Cooled Operation and Maintenance | 7 |