Carrier 38AUZ*07 Series Installation, Start-Up And Service Instructions Manual page 55

(Note 1)
(Note 3)
(Note 3)
(Note 2)
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
Fig. 12 - - Typical Remote Thermostat Connections
Thermostat —
Install a Carrier-approved accessory thermostat according
to installation instructions included with the accessory.
Locate the thermostat accessory on a solid wall in the
conditioned space to sense average temperature in
accordance with the thermostat installation instructions.
The 38AUD unit is a two-stage cooling unit. Select a
two-stage cooling thermostat.
Select a thermostat cable or equivalent single leads of
different colors with minimum of five leads for 38AUD
units. Check the thermostat installation instructions for
additional features which might require additional
conductors in the cable.
For wire runs up to 15 m (50 ft.), use no. 18 AWG
(American Wire Gage) insulated wire (35°C minimum).
For 15 to 23 m (50 to 75 ft.), use no. 16 AWG insulated
wire (35°C minimum). For over 23 m (75 ft.), use no. 14
AWG insulated wire (35°C minimum). All wire sizes
larger than no. 18 AWG cannot be directly connected to
the thermostat and will require a junction box and splice
at the thermostat.
PremierLink (accessory installation) – Refer to Form
33CS-58SI for details on connecting the PremierLink
controller and its various sensors.
CONTROL CIRCUIT WIRING — Control voltage is
24 v. See Fig. 18 and Fig. 19 and the unit's label diagram
for field- - supplied wiring details. Route control wires
through the opening in unit's end panel to the connection
in the unit's control box.
CONTROL TRANSFORMER WIRING — On multi
voltage units, check the transformer primary wiring
connections. See Fig. 13 or refer to the unit's label
diagram.
C10078
Fig. 13 - - Control Transformer Wiring
15
C10079