14
YORK INTERNATIONAL
1 System Fans
2 System 1 Power Panel
3 System 2 Power Panel
4 Control Panel
5 Power Entry
6 System 1 Compressor
7 Cooler
8 System 2 Compressor
9 System 1 Condenser
10 Option Box
4
10
2
3
1
8
7
6
5
9
INTRODUCTION
YORK Millennium YCAS chillers are designed for
water or water-glycol cooling. All units are designed to
be located outside on the roof of a building or at ground
level.
The units are completely assembled with all intercon-
necting refrigerant piping and internal wiring, ready for
field installation.
Prior to delivery, the unit is pressure tested, evacuated,
and fully charged with refrigerant and oil in each of the
two independent refrigerant circuits. After assembly,
an operational test is performed with water flowing
through the cooler to ensure that each refrigerant cir-
cuit operates correctly.
The unit structure is manufactured from heavy gauge,
galvanized steel. All external structural parts are coated
with “Desert Sand” baked-on enamel powder paint. This
provides a finish which, when subjected to ASTM B117,
500 hour, 5% salt spray conditions, shows breakdown
of less than 3 mm (1/8") either side of a scribed line
(equivalent to ASTM D1654 rating of “6”).
All exposed power wiring is be routed through liquid-
tight, non-metallic conduit.
GENERAL DESCRIPTION
The Air-Cooled Screw Chiller utilizes many components
which are the same or nearly the same as a standard
reciprocating chiller of a similar size. This includes
modular frame rails, condenser, fans and evaporator.
The chiller consists of 2, 3 or 4 screw compressors in a
corresponding number of separate refrigerant circuits,
a single shell-and-tube DX evaporator, economizers, an
air-cooled condenser, and expansion valves.
Compressor
The semi-hermetic rotary twin-screw compressor is
designed for industrial refrigeration applications and
ensures high operational efficiencies and reliable per-
28971AR
PRODUCT DESCRIPTION
FIG. 1 – COMPONENT LOCATIONS
Product Description
Summary of Contents for MILLENNIUM YCAS
Page 53: ...53 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM ACROSS THE LINE START 7...
Page 54: ...54 YORK INTERNATIONAL FIG 12 CONTINUED ELEMENTARY DIAGRAM Technical Data...
Page 59: ...59 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM WYE DELTA START LD03229 FIG 15 CONT D 7...
Page 60: ...60 YORK INTERNATIONAL FIG 15 CONTINUED ELEMENTARY DIAGRAM Technical Data...
Page 62: ...62 YORK INTERNATIONAL FIG 16 POWER PANEL FRONT INSIDE VIEW WYE DELTA START Technical Data...
Page 68: ...68 YORK INTERNATIONAL FIG 24 DETAIL B Technical Data...
