York K4EU120A50A, K5EU090A50A Power And Control Wiring, Blower Motor And Drive Data

TABLE 7 - BLOWER MOTOR AND DRIVE DATA

	Motor	Blower	Adjustable Motor Pulley				Fixed Blower Pulley		Belt
Model		Range	Pitch Dia			Bore	Pich Dia.	Bore	Designa-	Pitch Lg.
	(HP/kW)*
		(RPM)	(In./mm)	(In./mm)			(In./mm)	(In./mm)	tion	(In./mm)
KEU090	112 / 1.1	650/850	3.4 - 4.4 /	7	8	/ 22.2	7.5 / 190	1 / 25	A37	38.3 /	973
			86 - 112
KEU120	2 / 1.5	700/910	3.4 - 4.4 /	7	8	/ 22.2	7.0 / 178	1 / 25	A37	38.3 /	973
			86 - 112

*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.

550.39-N4YI

MOTOR SPECIFICA-

TIONS

•1450 RPM

•380/415-3-50

•Solid base

•56 Frame

•Inherently protected

Permanently lubricated ball bearings

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.

Remove the 13 8" (35mm) knockout from the unit rear panel. 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.

CONTROL WIRING

Route the low voltage control wiring through the 7 8" (22.2mm) hole (with bushing) in the units rear panel. Add 12" (25mm) con- duit fitting to the 7 8" (22.2mm) hole in the unit control box, route 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.

4 - WIRE

LUG ON NEUTRAL TERMI-

NAL BLOCK

TERMINALS ON	TERMINALS ON BLOCK 3TB OF
1 - S TA G E C O O L I N G	THE BLOWER UNIT
THERMOSTAT
2TH0870124

FIG. 10 - TYPICAL FIELD WIRING (Cooling only)

Unitary Products Group 11