26
YORK INTERNATIONAL
YK Motors (Electro-Mechanical Starter)
Fig. 9 shows the power wiring hook-up for Motor Con-
nections. (Refer to Wiring Labels in Motor Terminal Box
for hook-up to suit motor voltage and amperage.)
Motor leads are furnished with a crimp type connection
having a clearance hole for a 3/8" bolt, motor terminal
lugs are not furnished.
Chiller with Solid State Starter or
Variable Speed Drive
A chiller equipped with a Solid State Starter or Variable
Speed Drive does not require wiring to the compressor
motor. The motor power wiring is factory connected to
the Solid State Starter or Variable Speed Drive (or an
optional factory installed disconnect switch). See Field
Wiring Diagram. All wiring to the control panel and the
oil pump starter is completed by the factory. A control
transformer is furnished with the Solid State Starter or
Variable Speed Drive.
INSULATION
(SEE PRODUCT DRAWINGS FORM 160.52-PA1)
IMPORTANT
DO NOT field insulate until the unit has been leak
tested under the supervision of the YORK represen-
tative.
Insulation of the type specified for the job, or minimum
thickness to prevent sweating of 30°F surfaces should
be furnished (by others) and applied to the cooler shell,
end sheets, liquid feed line to flow chamber, compres-
sor suction connection, and cooler liquid heads and con-
nections. The liquid head flange insulation must be re-
movable, to allow head removal for the tube mainte-
nance. Details of areas to be insulated are given on the
Product Drawing.
Units are furnished factory anti-sweat insulated on or-
der at additional cost. This includes all low temperature
surfaces except the two (2) cooler liquid heads.
INSTALLATION CHECK –
REQUEST FOR START-UP SERVICE
The services of a YORK representative will be furnished
to check the installation and supervise the initial start-
up and operation on all chillers installed within the Con-
tinental United States.
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 ad-
vised so that the start-up service, included in the con-
tract price, can be scheduled. Notification to the YORK
office should be by means of Installation Check List and
Request, Form 160.49-CL1, in triplicate.