JOHNSON CONTROLS
20
FORM 160.69-N3
ISSUE DATE: 10/30/2015
SECTION 2 - INSTALLATION
YD Motors (Floor-Mounted Starter)
shows the power wiring hook-
up for motor connections. (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.
The YD Chiller has two motors which must be con-
nected to the proper starter. When viewed from the
chiller evaporator shell, motor #1 is on the left and mo-
tor #2 is on the right.
INSULATION
DO NOT field insulate until the unit has
been leak tested under the supervision of
the Johnson Controls representative.
Insulation of the type specified for the job, or mini-
mum thickness to prevent sweating of 30°F (-1°C) sur-
faces should be furnished (by others) and applied to the
evaporator shell, end sheets, liquid feed line to flow
chamber, compressor suction connection, and evapo-
rator liquid heads and connections. The liquid head
flange insulation must be removable, to allow head re-
moval for the tube maintenance. Details of areas to be
insulated are provided in the product drawings shipped
with the chiller.
Units are furnished factory anti-sweat insulated on or-
der at additional cost. This includes all low tempera-
ture surfaces except the two (2) cooler liquid heads.
INSTALLATION CHECKLIST AND REQUEST
FOR START-UP
The services of a Johnson Controls representative will
be furnished to check the installation and supervise the
initial start-up and operation on all chillers installed
within the Continental 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 Johnson Controls Office should be
advised so that the start-up service, included in the con-
tract price, can be scheduled. Complete the
Installa-
tion Checklist and Request for Startup Engineer (Form
160.69-CL1
and send to the Johnson Controls office.
NOTES:
A. Requires passing motor lead thru current transformer (CT) once
before connecting to power supply.
B. Requires passing motor lead thru CT twice before connecting to
power supply.
C. Requires passing motor lead thru CT three times before con-
necting to power supply.
FIGURE 12 -
COMPRESSOR MOTOR FIELD CONNECTIONS DIAGRAM (FLOOR MOUNTED)
LD00710
3 PHASE
MOTOR
VOLTAGE
50 / 60 HZ
MOTOR RATED LOAD AMPS CT RATIO
200:1
350:1
700:1
1400:1
200-600
65-111A
112-224A 225-829A 830-1790A
2300-4160
11-18C
19-37B
38-123A
124-264A 265-518A
