Carrier 38AUD - Page 19

19
Units Without Disconnect Option
Units With Disconnect Option
2
4
6
1
3
5
L1
L2
L3
Optional
Disconnect
Switch
Disconnect factory test leads; discard.
Factory
Wiring
11 13
L1
L2 L3
C1 TB1
Disconnect
C10074
Fig. 11 -- Power Wiring Connections
Table 10 – American/European Wire Conversions
AMERICAN EUROPEAN
Industry
Standard Size
American Conversion
Size (mm
2
)
Industry Standard
Size (mm
2
)
20 AWG 0.52 0.5
18 AWG 0.82 1.0
16 AWG 1.30 1.5
14 AWG 2.08 2.5
12 AWG 3.30 4.0
10 AWG 5.25 6.0
8AWG 6.36 10.0
6AWG 13.29 16.0
4AWG 21.14 25.0
3AWG 26.65 —
2AWG 33.61 35.0
1AWG 42.39 50.0
1/0 AWG 53.49 —
2/0 AWG 67.42 70.0
3/0 AWG 85.00 95.0
4/0 AWG 107.9 120.0
Field Control Wiring —
38AU unit control voltage is 24 v. See Fig. 24 (38AUZ)
and Fig. 25 (38AUD) for typical field control c onnections
and the unit’s label diagram for field-supplied wiring
deta ils. Route control wire s to the 38AU unit through the
opening in unit’s end panel to the connections terminal
board in the unit’s control box.
Remainder of the system controls connection will vary
according to the specific construction details of the indoor
section (air hand ler or packag ed fan coil) . Fig. 12 (38A U Z)
and Fig. 13 (38AUD) depict typical connections to a Carrier
40R U fan coil unit. P lan for field conn ection s carefully and
install control wiring correctly per the project plan.
Additional components and supplemental transformer
access o ry may be required .
The 38AU unit requires a n external temperature control
device. This device can be a thermostat (field-supplied) or
a PremierLink controller (available as a field-installed
accessory, for use on a Carrier Comfort Network or as a
stand alone control).
Note 1: Connect only if thermostat requires 24-vac power source.
Note 2: Connect W1 and W2 if supplemental heaters are installed
Field Wiring
(Note 1)
(Note 2)
(Note 2)
C10985
Fig. 12 -- Typical Remote Thermostat Connections
— 38AUZ
Note 1: Typical multi-function marking. Follow manufacturer’s configuration
instructions to select Y2.
Note 2: Connect only if thermostat requires 24-vac power source.
Note 3: Connect W1 and W2 if supplemental heaters are installed
Field Wiring
(Note 1)
(Note 2)
(Note 3)
(Note 3)
C10078
Fig. 13 -- Typical Remote Thermostat Connections
— 38AUD
38AU