Static Resistances For Unit Accessories - York LEU360 Technical Manual

550.13-TG2Y (799)
ules 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 alu-
minum 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. All motors have inherent protection except
those available for the 50 ton unit. Motors for 50 ton units
require a starter and overload elements
TABLE 1: STATIC RESISTANCES FOR UNIT ACCESSORIES
UNIT MODEL ACCESSORY
LEU360 Hot Water Coil
Steam Coil
LEU480
Hot Water Coil
LEU600
Hot Water Coil
4
DRIVE PACKAGES Different size pulleys and belts are avail-
able for each unit to provide a blower RPM range to meet
almost any air delivery requirement. Variable pitch motor pul-
leys 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 (50 ton only) The
blower motors that are available for the 50 ton units do not
have inherent protection and require external motor overload
protection.
10,000 11,000
0.08 0.09
0.17 0.20
12,800 14,400
0.11 0.13
16,000 18,000
0.15 0.18
CFM
12,000 13,000
0.10 0.12
0.23 0.27
16,000 17,600
0.15 0.17
20,000 22,000
0.21 0.24
14,000
0.14
0.31
19,200
0.20
24,000
0.28
Unitary Products Group