York 600, LB360, LA300, 480 manual Static Resistances for Unit Accessories, Unit Mounting DIMENSIONS1

036-21335-002-A-1102

STEAM COILS (LA300 & LB360 only): A steam coil is avail- able on the 25 & 30 Ton for installation between the blower and coil modules of both horizontal and vertical units. Since the casing matches the dimensions and the finish of the basic unit, it becomes an integral part of the unit after installation. The coil slides out of the casings for easy installation and is pitched in the casings to facilitate condensate drainage. The coil has copper tubes that have been mechanically expanded into aluminum fins. Both headers are located on the same end of the coil. The coil is leak-tested at 325 psig and dried before the connections are capped for storage and shipping.

BLOWER MOTORS: Different HP motors are available for each unit to meet almost any air delivery requirement. All motors are UL approved, have permanently lubricated ball bearings and are field-mounted within the insulated cabinet of the units to minimize the transmission of sound to the sur-

rounding space. 5 HP motors are inherently protected. 7.5 HP - 15 HP require motor overload protection.

DRIVE PACKAGES: Different size pulleys and belts are available for each unit to provide a blower RPM range to meet almost any air delivery requirement. Variable pitch motor pulleys can be adjusted to provide the proper blower RPM. All drive packages are rated at least 25% above the nominal HP rating of the blower motor. Two-groove pulleys and two belts are provided on every drive package rated at 5 HP and above.

STARTERS AND HEATER ELEMENTS (7.5 - 15 HP): The blower motors that are available for the units do not have inherent protection and require external motor overload pro- tection. See details in Table 7.

TABLE 1: STATIC RESISTANCES FOR UNIT ACCESSORIES

UNIT MODEL	ACCESSORY			CFM
		8,000	9,000	10,000	11,000	12,000
LA300
	Hot Water Coil	0.06	0.07	0.08	0.09	0.10
	Steam Coil	0.11	0.14	0.17	0.20	0.23
		10,000	11,000	12,000	13,000	14,000
LB360
	Hot Water Coil	0.08	0.09	0.10	0.12	0.14
	Steam Coil	0.17	0.20	0.23	0.27	0.31
LB480		12,800	14,400	16,000	17,600	19,200
	Hot Water Coil	0.11	0.13	0.15	0.17	0.20
LB600		16,000	18,000	20,000	22,000	24,000
	Hot Water Coil	0.15	0.18	0.21	0.24	0.28

TABLE 2: UNIT MOUNTING DIMENSIONS1

LA/LB		DIMENSIONS, INCHES
UNIT	AX	BX	CX
300	69-1/4	49-1/16	26-5/8
360	69-1/4	49-1/16	26-5/8
480	84	50-9/16	34

1.See Figure 4 for dimensions AX, BX and CX.

Unitary Products Group 5