Unit With Solid State Starter (Optional); Insulation; Insulation Check - Request For Start-Up Service - York MILLENNIUM YS Manual

Installation
POWER WIRING (CONT'D)
Remote Electro-Mechanical starters
for the YS Unit must be furnished in
accordance with York Standard R-
1079.
Each YS unit is furnished for a specific electrical power
supply as stamped on the unit data plate, which also
details the motor connection diagrams.
To insure proper motor rotation, the
starter power input and starter to mo-
tor connections must be checked with
a phase sequence indicator in the pres-
ence of the York Representative.
IMPORTANT
DO NOT cut wires to final length or make final
connections to motor terminals or starter power
input terminals until approved by the York Repre-
sentative.
Figure 12 shows the power wiring hook-up for YS Mo-
tor Connections. (Refer to Wiring Labels in Motor Ter-
minal Box for hook-up to suit motor voltage and amper-
age.)
Motor leads are furnished with a crimp-type connection
having a clearance hole for a 3/8 inch bolt, motor termi-
nal lugs are not furnished.

UNIT WITH SOLID STATE STARTER (OPTIONAL)

A YS unit equipped with a Solid State Starter, does not
require wiring to the compressor-motor. The motor
power wiring is factory connected to the Solid State
Starter (or an optional factory installed disconnect
switch). All wiring to the control panel is completed by
the factory. A control transformer is furnished with the
Solid State Starter. Refer to Form 160.47-PW12.
24

INSULATION

Insulation of the type specified for the job, or minimum
thickness to prevent sweating of 30°F surfaces (water
chill application), should be furnished (by others) and
applied to the cooler shell, end sheets, liquid feed line to
flow chamber, compressor suction connection, and cooler
liquid heads and connections. The liquid head flange in-
sulation must be removable to allow head removal for
tube maintenance. Details of areas to be insulated are
given in Product Drawing, Form 160.47-PA1.
Units can be furnished, factory anti-sweat insulated, on
order at additional cost. This includes all low tempera-
ture surfaces except the two cooler liquid heads.
IMPORTANT
DO NOT field insulate until the unit has been leak
tested under the supervision of the York Repre-
sentative.
INSTALLATION CHECK – REQUEST FOR
START-UP SERVICE
After the unit is installed, piped and wired as described
in this Instruction, but before any attempt is made to
start the unit, the York District Office should be advised
so that the start-up service, included in the contract price,
can be scheduled. Notification to the York Office should
be by means of Installation Check List and Request,
Form 160.47-CL1, in triplicate. (See Figure 13.)
The services of a York Representative will be furnished
to check the installation and supervise the initial start-
up and operation on all YS units installed within the Con-
tinental United States.
YORK INTERNATIONAL