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1
3 8 A U D A 1 4 A 0 G 9 A 0 A 0 A 0
Model Type
38AU = Carrier Condensing Unit
Puron
®
R–410A Refrigerant
Type of Coil
Z = Single Circuit, A/C Scroll Compressor
D = Dual Circuit, A/C Scroll Compressor
Refrigerant Options
A = None
B = Low Ambient
Nominal Capacity
07 = 18 kW (6 Tons)
08 = 22 kW (7.5 Tons)
12 = 28 kW (10 Tons)
14 = 34 kW (12.5 Tons)
Not Used
A = Not Used
Not Used
0 = Not Used
POSITION NUMBER
TYPICAL
Matching 38AU Model To Evaporator Coil
The Model 38AUZ is a single-circuit unit design,
requiring one set of refrigeration piping. This model can
be connected to an evaporator coil with one circuit or with
two circuits (by manifolding the evaporator connections
into a single piping system).
The Model 38AUD is a dual-circuit unit design that
requires two sets of refrigeration piping between the
outdoor unit and the evaporator coil (or coils). This model
can only be connected to an evaporator coil that has two
refrigeration circuits (or to two separate evaporator coils).
The Model 38AUD CANNOT be connected to a
single-circuit evaporator coil. The Model 38AUD
CANNOT be field-converted to a single-circuit design.
2
3
4
5
6
7
8
9
Fig. 2 - - Model Number Nomenclature
1
2
0
5
P
O
I S
I T
O
N
1−2
3−4
5
6−10
Fig. 3 - - Serial Number Nomenclature
10 11 12 13 14 15 16 17 18
Service Options
0 = None
Not Used
A = Place Holder
Base Unit Controls
0 = Electro-Mechanical Controls
Design Revision
A = Initial Rev (Discrete Model Number)
Voltage
9 = 400/3/60
Coil Options
NOVATION™
G = Al/Al
K = E-Coat Al/Al
T = Al/Al with Hail Guard
W = E-Coat Al/Al with Hail Guard
3
4
5
6
1
0
G
1
D
E
I S
G
N
W
e
k e
f o
m
a
n
f u
c a
u t
Year of manufacture ("10" = 2010)
M
a
n
u
a f
t c
r u
n i
g
o l
c
a
o i t
n
S
e
q
u
e
t n
a i
Table 3 – Evaporator Coil Connections
Evaporator Coil has
Single Circuit
Two Circuits
Before unpacking this new 38AU model, compare the
evaporator coil design to the 38AU model.
9
Packaging
0 = Standard
1 = LTL
Electrical Options
A = None
C = Non-Fused Disconnect
RTPF
A = Cu/Al
B = Precoat (Cu/Al)
C = E-Coat (Cu/Al)
M = Cu/Al with Hail Guard
N = Precoat (Cu/Al) with Hail Guard
P = E-Coat (Cu/Al) with Hail Guard
7
8
9
2
3
4
A
T
E
S
e r
i f (
c s
a
c l
a
e l
n
d
a
) r
(
G
=
E
T
, P
e T
a x
, s
U
S
) A
n l
u
m
b
r e
Connect to Model
Notes
38AUZ ONLY
Manifold evaporator
38AUZ
circuits into single
piping system
Or
Use two separate
38AUD
piping systems
C101016
10
5
C10068
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