Electrical Wiring; Electrical Connections; Electrical Power; Disconnect Switch - Trane 4TCY4024 Installer's Manual

Table 1. Filter Sizes (field supplied filter rack)
NOMINAL
UNIT
CFM
4*CY4024 800
4*CY4030 1000
4*CY4036 1200
4*CY4042 1400
4*CY4048 1600
4*CY4060 2000
*Filters must be installed in the return air system. The above square foot-
ages are based on 300 F.P.M. face velocity. If permanent filters are used,
size per mfg. Recommendation with clear resistance of 0.05"WC.

Electrical Wiring

Note: This unit is factory wired for 230V. See wiring diagram
for 208V conversion.

Electrical Connections

Electrical wiring and grounding must be installed in accordance
with local codes or, in the absence of local codes, with the National
Electrical Code ANSI/NFPA 70, Latest Revision.

Electrical Power

It is important that proper electrical power be available for the unit.
Voltage variation should remain within the limits stamped on the
unit nameplate.

Disconnect Switch

Provide an approved weatherproof disconnect within close proxim-
ity and within sight of the unit.
to the cabinet, the location shown in Figure 19 should be the only
one considered.
Over Current Protection
The branch circuit feeding the unit must be protected as shown on
the unit's rating plate.

Power Wiring

The power supply lines must be run in weather-tight conduit to the
disconnect and into the side of the unit control box. Provide strain
relief for all conduit with suitable connectors.
Provide flexible conduit supports whenever vibration transmission
may cause a noise problem within the building structure.
1. Remove the Control/Heat access panel. Pass the power
wires through the Power Entry hole in the end of the unit.
See Figure 17.
2. Connect the high voltage wires to the appropriate contactor
terminals. Single phase units use a two (2) pole contactor
and three phase units use three (3) pole contactor. Connect
the ground to the ground lug on the chassis. See Figure 19.
Be sure all connections are tight.
GROUNDING: THE UNIT MUST BE ELECTRICALLY
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR
THE NATIONAL ELECTRIC CODE.
FILTER FILTER
RESISTANCE ("W.C.)
SIZE(Sq Ft)
2.67 0.08
3.33 0.08
4 0.08
4.67 0.08
5.33 0.08
6.67 0.08
If disconnect must be mounted
Installer's Guide
Run power supply Lines through
weather-tight conduit and secure to
unit with strain relief
Figure 17. Power Wiring
Figure 18. Power Connections
Figure 19. Mounted Disconnect Location
Contactor
Unit Ground Lug
Page 17