5
JOHNSON CONTROLS
and service.
8. Trending data with the ability to customize points of
once every second to once every hour. The panel
shall trend up to 6 different parameters from a list of
over 140, without the need of an external monitoring
system.
9. The operating program stored in non-volatile memory
(epROM) to eliminate reprogramming the chiller due
to AC power failure or battery discharge. programmed
setpoints shall be retained in lithium battery-backed
RTC memory for a minimum of 11 years with power
removed from the system.
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 field 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 field-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, 00 - 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
rectifiers, 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.
Guide Specifications-
continued
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
circuit breaker includes ground fault protection and pro-
vides 65,000 amp. Short circuit withstand rating in ac-
cordance 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 specifications and as specified elsewhere
in these specifications.
PORTABLE REFRIGERANT STORAGE/RECYCLING
SYSTEM
A portable, self-contained refrigerant storage/recycling
system shall be provided consisting of a refrigerant com-
pressor with oil separator, storage receiver, water cooled
condenser, filter drier and necessary valves and hoses
to remove, replace and distill refrigerant. All necessary
controls and safety devices shall be a permanent part of
the system.
