Carrier 38AUD - Page 13

13
Table 6 – 38AUD 12-14 50Hz Piping Recommendations (Two-Circuit Unit)
NOTE: 38AUD requires TWO sets of refrigeration piping
R---410A Equivalent Length
meter 0 --- 1 2 12---23 23--- 34 34--- 46 46--- 57
feet 0 --- 3 8 38--- 75 75--- 113 113--- 150 150--- 188
Model
Linea r Length
meter 0 --- 7 . 5 7.5--- 15 15--- 23 23--- 30 30--- 38
feet 0 --- 2 5 25--- 50 50--- 75 75--- 100 100--- 125
38AUD*12 Liquid Line
3
/
8
3
/
8
3
/
8
1
/
2
3
/
8
1
/
2
3
/
8
1
/
2
Max Lift
SI (m)
Novation 7.5 15 15 23 10 24 13 29
RTPF 7.5 15 15 23 10 27 11 32
EN (ft)
Novation 25 50 50 75 36 79 44 96
RTPF 25 50 50 75 36 89 39 106
Suction Line
7
/
8
7
/
8
7
/
8
7
/
8
1 ---
1
/
8
Charge
SI (kg)
Novation 3.3 3.8 4.2 5.3 4.7 6.1 5.1 6.9
RTPF 4.9 5.4 5.8 6.9 6.3 7.7 6.8 8.6
EN (lbs)
Novation 7.3 8.3 9.3 11.6 10.3 13.4 11.3 15.2
RTPF 10.9 11.9 12.9 15.2 13.9 17.0 14.9 18.8
38AUD*14 Liquid Line
3
/
8
1
/
2
5
/
8
1
/
2
5
/
8
1
/
2
5
/
8
1
/
2
5
/
8
Max Lift
SI (m)
Novation 7.5 13 15 12 14 11 14 17 20
EN (ft)
Novation 25 45 50 42 49 39 48 56 68
Suction Line
7
/
8
7
/
8
7
/
8
1 ---
1
/
8
1 ---
1
/
8
Charge
SI (kg)
Novation 4.6 5.8 6.6 6.6 7.8 7.6 10.7 9.4 12.0
EN (lbs)
Novation 10.1 12.7 14.6 14.5 17.3 16.8 23.5 20.7 26.4
Legend:
Equivalent
Length
Equivalent tubing length, including effects of refrigeration specialties devices
Linear Length Linear tubing length, feet
Liquid Line Tubing size, inches OD.
Max Lift Maximum liquid lift (indoor unit ABOVE outdoor unit only), at maximum permitted liquid line pressure drop
S Linear Length Less than 30 m (100 ft): Minimum 1.1° C (2.0° F) subcooling entering TXV
S Linear Length Greater than 30 m (100 ft): Minimum 0.3° C (0.5° F) subcooling entering TXV
Suction Line Tube size, inches OD
Charge Charge Quantity, lbs. Calculated for both liquid line sizes (where applicable), but only with larger suction line size
(where applicable)
DNU Do Not Use (pressure drop exceeds available subcooling in this model)
NR Not Recommended (use smaller liquid tube size)
SI Metric units of measure
EN English units of measure (I---P)
NOTE: For applications with equivalent length greater than 57 m (188 ft) and/or linear length greater than 38 m (125 ft),
contact your local Carrier representative.
38AU