4
Identify Factory Options —
Factory options will affect 38AU unit pipe sizing selections.
Coil type impacts liquid lift limits; Hot Gas Bypas s impacts
the selectio n of suctio n tube size in vertical riser segments .
Check this unit’ s Model Number against the Model Number
Nomen clatu re, Fig. 1. D eter mine the sig nif ican ce of this
unit’s values in Pos ition 9 (Coil type) and Position 6 (Ho t
Gas Bypass, 38AUD only). Copy the unit’ s Model Number
from the unit’s dataplate into the open line in the h eader
above Fig. 1 to facilitate this step.
Model Type
38AU= Carrier Condensing Unit
Puron
®
R --- 4 1 0 A R e f r i g e r a n t
Type of Coil
D = Dual Circuit, A/C Scroll Compressor
Z = Single Circuit, A/C Scroll Compressor
Refrigerant Options
A = None
B = Low Ambient
C = Hot Gas Bypass (38AUD units only)
Nominal Tonnage
16 = 15 Tons
25 = 20 Tons
Not Used
A = Not Used
Not Used
0 = Not Used
3Example 8AUDC25A0A6A0A0A0
123456789101112131415161718
Packaging
0=Standard
1=LTL
Electrical Options
A = None
C = Non-Fused Disconnect
Service Options
0=None
1 = Un-powered Convenience Outlet
1=
2 = Powered Convenience Outlet
Not Used
A=PlaceHolder
Design Rev
A = Initial Release
Voltage
1 = 575/3/60
5 = 208/ 230/3/60
6 = 460/3/60
Base Unit Controls
0 = Electro-Mechanical Controls
Position
Enter this unit’s
Model Number
Coil Options
G= Al/Al
NOVATION™ (Size 16 only)
K = E-Coat Al/Al
T = Al/Al with Hail Guard
W= E-Coat Al/Al with Louvered Hail Guard
RTPF (Sizes 16 & 25)
A= Cu/Al
B = Precoat (Cu/Al)
C = E-Coat (Cu/Al)
M= Cu/Al with Louvered Hail Guard
E=Cu/Cu
N = Precoat (Cu/Al) with Louvered Hail Guard
P = E-Coat (Cu/Al) with Louvered Hail Guard
R = Cu/Cu with Louvered Hail Guard
C12063
Fig. 1 -- Model Number Nomenclature
DESIGNATESPOSITION
Week of manufacture (fiscal calander)
Manufacturing location5
Sequence number
Year of manufacture (”12” = 2012)
1−2
6−10
3−4
POSITION NUMBER
TYPICAL
12345678910
0512C12345
C12226
Fig. 2 -- Serial Number Nomenclature
38AU
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