17
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. 19 and Fig. 20 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.
C10079
Fig. 13 -- Control Transformer Wiring
38A
U
D
Summary of Contents for 38AUD 16 Series
Page 21: ...21 CIRCUIT 1 CIRCUIT 2 C10946 Fig 16 38AUD 16 Charging Chart Novation 38AUD...
Page 22: ...22 C10949 Fig 17 38AUD 16 Charging Chart RTPF 38AUD...
Page 23: ...23 CIRCUIT 1 CIRCUIT 2 C10950 Fig 18 38AUD 25 Charging Chart RTPF 38AUD...
Page 24: ...24 C10084A Fig 19 Typical 38AUD 16 Wiring Diagram 38AUD...
Page 25: ...25 C10085A Fig 20 Typical 38AUD 25 Wiring Diagram 38AUD...