5
FORM 160.47-NOM3
YORK INTERNATIONAL
FIG. 1 – MODEL YS, STYLE D ROTARY SCREW LIQUID CHILLER
SECTION 1
INSTALLATION
GENERAL
This instruction describes the installation of a Model YS
Rotary Screw Liquid Chiller. (See Figure 1.) This unit
is shipped as a single factory assembled, piped, wired
and nitrogen or refrigerant charged package (Form 1
shipment). This unit requires a minimum of field labor
to make chilled water connections, condenser water con-
nections, refrigerant atmospheric relief connections, and
electrical power connections.
YS units can also be shipped dismantled when required
by rigging conditions, but generally it is more economi-
cal to enlarge access openings to accommodate the fac-
tory assembled unit.
The YS Chiller may be ordered and shipped in the fol-
lowing forms:
Form 1
– Factory Assembled Unit, Complete with
Motor and Refrigerant and Oil Charges as
discussed in this instruction.
Form 2
– Factory Assembled (same as Form 1) ex-
cept not charged with oil or refrigerant.
Shipped with holding charge of nitrogen. Re-
frigerant shipped in 50 and 125 lb. cylinders.
Form 3
– Driveline Separate From Shells – Shipped
as three major assemblies.
Form 7
– Split Shells – Shipped as four major as-
semblies.
Units shipped dismantled MUST be re-
as-sembled by, or under the supervi-
sion of a York representative. Refer to
Form 160.47-N3.1 for detailed in-
structions of Form 3 and 7 shipments.
MOTOR
MOTOR TERMINAL BOX
COMPRESSOR
RUPTURE
DISK
RELIEF VALVE
OIL
SEPARATOR
MICROCOMPUTER
CONTROL
CENTER
COOLER
SIGHT GLASS
29039A
RELIEF VALVE
CONDENSER
1
