Trane 4YCY4042C, Installer'S Manual

Page: 19 / 28

Page 19
Installer’s Guide
Air Filter Installation
The packaged unit requires an air filter. The unit does not come
with a factory installed filter rack in it, however, two filter frame ac-
cessories are offered that will allow the installation of a filter within
the unit, BAYFLTR101 & BAYFLTR201. Otherwise a field supplied
filter rack must be installed by the installer in the return duct work.
Refer to Table 5 to determine filter sizes for field supplied filter racks.
*Filters must be installed in the return air system. The above square
footages are based on 300 F.P.M. face velocity. If permanent filters are
used, size per mfg. Recommendation with clear resistance of 0.05" W.C.
High Altitude Installation
Unit nameplate ratings are based on equipment operation from
sea level to 2000 feet elevation above sea level.
No orifice changes
required for high altitude installation, please refer to below chart for
rating information.
Table 4. High Altitude Derate Chart
Table 5. Filter Sizes (field supplied filter rack)
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 Wiring
NOTE: This unit is factory wired for 230V. See wiring dia-
gram in SERVICE FACTS for 208V conversion.
Figure 19. Power Wiring
NOTE: For branch circuit wiring (main power supply to unit
disconnect), determine wire size for the length of run using the
circuit ampacity found on the unit nameplate and the N.E.C.
For more than 3 conductors in a raceway or cable, see the
N.E.C. for derating the ampacity of each conductor.
Run power
supply Lines
through weath-
er-tight conduit
and secure to
unit with strain
relief
Unit Input
115k 2001 3000 4000 5000 6000 7000 8000
High stage 112100 104100 96200 88100 86900 85600 85100
Low stage
84000 78100 72100 66100 65100 64200 63800
90k
High stage 87700 81500 75200 69000 68000 67000 66500
Low stage 65700 61100 56400 51700 51000 50200 49900
70k
High stage
68200 63300 58500 53600 52900 52100 51800
Low stage 51100 47600 43900 40200 39600 39100 38800
60k
High stage
58500 54300 50100 46000 45300 44700 44300
Low stage
43800 40700 37600 34500 34000 33400 33200
For LP installations. Models that require #49 orifices, for
altitudes from 7000 - 8000' orifices must be changed to #50.
HIGH ALTITUDE DERATE CHART NAT.
Altitude (In Feet)
Inputs shown are with factory orifices @ 3.5"WC (High Fire)
1.8"WC (Low Fire)
Natural Gas heating value of 950 btu/cuft.
Electrical Power
It is important that proper electrical power be available for the unit.
Voltage variation should remain within the limits found on the unit
nameplate.
Disconnect Switch
Provide an approved weatherproof disconnect within close proxim-
ity and
within sight of the unit.
If disconnect must be mounted
to the cabinet, the location shown in Figure 21 should be the only
one considered.
Over Current Protection
The branch circuit feeding the unit must be protected as shown on
the unit nameplate.
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 19.
2. Connect the high voltage wires to the appropriate contactor lug
terminals. Single phase units use a two (2) pole contactor
and three phase units use two (2) pole contactor and a Blue
lead wire. Connect the ground to the ground lug on the chas-
sis. See Figure 20. Be sure all connections are tight.
GROUNDING: THE UNIT MUST BE ELECTRICALLY
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR
THE NATIONAL ELECTRIC CODE.
NOTE: Unit must be grounded for ignitor to operate properly.
Gas pipe to unit is not an adequate ground. Ground the unit
internally as provided.
HAZARDOUS VOLTAGE, MOVING PARTS, AND GAS
Bodily injury can result from high voltage electrical compo-
nents, fast moving fans, and combustible gas. For protection
from these inherent hazards during installation and service,
the electrical supply must be disconnected and the main
gas valve must be turned off. If operating checks must be
performed with the unit operating, it is the technician's re-
sponsibility to recognize these hazards and proceed safely.
▲
WARNING
!
UNIT
NOMINAL
CFM
FILTER* SIZE
(Sq. Ft.)
FILTER
RESISTANCE
("W.C.")
4YCZ6036 1200 4 0.08
4YCZ6048 1600 5.33 0.08
4YCZ6060 2000 6.67 0.08
IMPORTANT: Air filters and media wheels or plates shall meet the test
requirements in UL 900.