Control Wiring; Airflow Adjustment - Trane 4TEE3C01A1000A Installer's Manual

I. CONTROL WIRING
1. Connect wiring between indoor unit, outdoor unit
and Comfort Control. The use of color-coded low-
voltage wires is recommended.
2. A low voltage terminal board is provided for control
wiring, and is located on the left side of the cross
brace in the center of the unit.
3. Field wiring diagrams on pages 14-16 show the low
voltage wiring hookup for a single speed cooling
only system (with supplementary heaters) and a
Heat Pump system (with supplementary heaters).
Plug in type electrical connectors are provided for
use with supplementary heaters.
Table 1 — Control Wiring
Communicating Control Wiring
WIRE SIZE
18 AWG
NEC Class II Wiring - 24 VOLTS
WIRE SIZE
18 AWG
16 AWG
14 AWG
* The maximum total cable length for the entire Comfort
Control communicating system is 500 ft. 18 AWG.
* * Maximum total length of low voltage wiring from outdoor
unit, to indoor unit, and to Comfort Control.
18-GE14D1-5
MAX. WIRE LENGTH*
250 FT
MAX. WIRE LENGTH**
150 FT
225 FT.
300 FT.
Installer's Guide
J. AIRFLOW ADJUSTMENT
Blower speed changes are made using the User Inter-
face mounted on the communicating Comfort Control
box. The Air Handler control board controls the serial
motor.
NOTE: Serial motors have bearings which are perma-
nently lubricated and under normal use lubrication
is not recommended.
When paired with a communicating outdoor unit, the
Air Handler control board will auto-discover the outdoor
unit size. Default settings are 400 CFM/ton and 1.5
minute at 100% CFM off delay. For other airflow set-
tings, access the User Interface Menu (See Figure 16)
to select options or use the options in the communicat-
ing Comfort Control. The full menu is listed in Figure
17.
When Air Handler is to be used in 24 VAC mode,
access the User Interface to change the comfort
control mode to 24 VAC, match the airflow for the
outdoor unit size (tons), adjust the cooling air-
flow (CFM/ton), set the Fan on/off-delay options,
and adjust the heating airflow per the Nameplate
specifications on the air handler front panel. The
User Interface appears as shown in Figure 16. The full
menu is listed in Figure 18.
If the airflow needs to be increased or decreased, see
the Blower Performance Table in the Service Facts. In-
formation on changing the speed of the blower motor
for your specific outdoor model size is in the Blower
Performance Table.
Be sure to set the airflow for the correct tonnage.
Refer to the User Interface for correct setting.
If the optional humidistat is used, remove R-BK jumper
from the low voltage terminal board (not shown) and in-
stall the humidistat between R and BK. (Jumper R to O
for cooling-only/non-heat pump systems with a humidis-
tat.)
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