Power And Control Wiring; Blower Motor And Drive Data; Typical Field Wiring (Cooling Only) - York SUNLINE K4EU120A50A Installation Instruction

TABLE 7 - BLOWER MOTOR AND DRIVE DATA
Blower
Motor
Model Range
(HP/kW)*
(RPM)
1
1 / 1.1
KEU090 650/850
2
KEU120 2 / 1.5 700/910
*All motors are 1450 RPM and have a 56 frame, inherent protection and permanently lubricated ball bearings The motors have a solid base and a 1.15 serv-
ice factor. All 3-phase motors are wired for 380/415V power supply.

POWER AND CONTROL WIRING

Install electrical wiring in accordance with applicable national,
local and municipal codes. The unit should be grounded in ac-
cordance with these codes.
3
Remove the 1 " (35mm) knockout from the unit rear panel.
8
Route the power wiring conduit through this opening. Connect
the conduit to the required field-supplied fitting and the power
wiring to blower motor contactor 10M in unit control box.
If the unit includes an electric heat accessory, route the power
wires into heater control box instead of the unit. Refer to the
electric heat instructions for additional installation information.
TERMINALS ON
1 - S TA G E
THERMOSTAT
2TH0870124
FIG. 10 - TYPICAL FIELD WIRING (Cooling only)
Unitary Products Group
Adjustable Motor Pulley Fixed Blower Pulley
Pitch Dia Bore Pich Dia.
(In./mm) (In./mm) (In./mm)
3.4 - 4.4 /
7
/ 22.2
7.5 / 190
8
86 - 112
3.4 - 4.4 /
7
/ 22.2
7.0 / 178
8
86 - 112
4 - WIRE
C O O L I N G
Belt
Bore Designa-
(In./mm) tion
1 / 25 A37
1 / 25 A37
CONTROL WIRING
Route the low voltage control wiring through the
hole (with bushing) in the units rear panel. Add
7
duit fitting to the " (22.2mm) hole in the unit control box, route
8
control wiring through this opening and connect them to the ter-
minals on block 4TB.
Refer to Table 6 to size the disconnect switch, the power wiring
and the fuses. Refer to Figure 10 for typical field wiring.
NOTE: Three phase motor rotation may be incorrect when the
unit is first started up. Reverse phase (leads L1 and
L2) at contactor to obtain the correct rotation.
LUG ON NEUTRAL TERMI-
NAL BLOCK
TERMINALS ON BLOCK 3TB OF
THE BLOWER UNIT
550.39-N4YI
MOTOR SPECIFICA-
TIONS
•1450 RPM
Pitch Lg.
•380/415-3-50
(In./mm)
•Solid base
38.3 / 973
•56 Frame
•Inherently protected
38.3 / 973
Permanently lubricated
ball bearings
7
" (22.2mm)
8
1
" (25mm) con-
2
11