Specifications

54 JOHNSON CONTROLS
FORM 160.80-EG1 (511)
10. A fused connection through a transformer in the
compressor motor starter to provide individual over-
current protected power for all controls.
11. A numbered terminal strip for all required eld inter-
lock wiring.
12. An RS-232 port to output all system operating data,
shutdown/cycling message, and a record of the last
10 cycling or safety shutdowns to a eld-supplied
printer. Data logs to a printer at a set programmable
interval. This data can be preprogrammed to print
from 1 minute to 1 day.
13. The capability to interface with a building automation
system to provide:
a. Remote chiller start and stop
b. Remote leaving chiller liquid temperature adjust
c. Remote current limit setpoint adjust
d. Remote ready to start contacts
e. Safety shutdown contacts
f. Cycling shutdown contacts
g. Run contacts
COMPRESSOR MOTOR STARTER
(OPTION, 200 - 600V)
The chiller manufacturer shall furnish a reduced-voltage
Solid State Starter for the compressor motor. Starter
shall be factory-mounted and wired on the chiller. The
starter shall provide, through the use of silicon controlled
rectiers, a smooth acceleration of the motor without
current transitions or transients. The starter enclosure
shall be NEMA 1, with a hinged access door with lock
and key. Electrical lugs for incoming power wiring shall
be provided.
Standard features include: digital readout at the OptiView
Control Center of the following:
Display Only:
• 3-phase voltage A, B, C
• 3-phase current A, B, C
• Input power (kW)
• kW Hours
• Starter Model
• Motor Run (LED)
• Motor Current % Full Load Amps
• Current Limit Setpoints
• Pulldown Demand Time Left
Programmable:
• Local Motor Current Limit
• Pulldown Demand Limit
• Pulldown Demand Time
Other features include: low-line voltage, 115-volt control
transformer; three-leg sensing overloads; phase rotation
and single-phase failure protection; high temperature
safety protection, motor current imbalance and undervolt-
age safeties; open and close SCR protection; momentary
power interruption protection. The LCSSS is cooled by a
closed loop, fresh water circuit consisting of a water-to-
water heat exchanger and 1/25 HP circulating pump. All
interconnecting water piping is factory installed and rated
for 150 psig working pressure. Optional unit-mounted cir-
cuit breaker includes ground fault protection and provides
65,000 amp. Short circuit withstand rating in accordance
with UL Standard 508. A non-fused disconnect switch is
also available. Both options are padlockable.
REMOTE ELECTRO-MECHANICAL COMPRESSOR
MOTOR STARTER (OPTIONAL)
A remote electro-mechanical starter of the R-1051 type
shall be furnished for each compressor motor. The starter
shall be furnished in accordance with the chiller manufac-
turer’s starter specications and as specied elsewhere
in these specications.
Guide Specications- continued