Specifications

JOHNSON CONTROLS
18
FORM 150.72-NM1 (908)
Product Description
ACCESSORIES AND OPTIONS
POWER OPTIONS
COMPRESSOR POWER CONNECTIONS – Single-
point terminal block connection(s) are provided as
standard. The following power connections are available
as options. (See electrical data for specic voltage and
options availability.) (Factory-mounted)
SINGLE-POINT SUPPLY TERMINAL BLOCK – In-
cludes enclosure, terminal-block and interconnecting
wiring to the compressors. Separate external protec-
tion must be supplied, by others, in the incoming
compressor-power wiring. (Do not include this option
if either the Single-Point Non-Fused Disconnect
Switch or Single-Point Circuit Breaker options have
been included.)
SINGLE-POINT NON-FUSED DISCONNECT
SWITCH OR MULTIPLE-POINT NON-FUSED
DISCONNECT SWITHCHES – Unit-mounted dis-
connect switch (es) with external, lockable handle
(in compliance with Article 440-14 of N.E.C.), can be
supplied to isolate the unit power voltage for servic-
ing. Separate external fusing must be supplied, by
others in the power wiring, which must comply with
the National Electrical Code and/or local codes.
SINGLE-POINT NON-FUSED DISCONNECT
SWITCH WITH INDIVIDUAL SYSTEM BREAKERS
- Includes unit-mounted disconnect switch with ex-
ternal, lockable handles (in compliance with Article
440-14 of N.E.C.) to isolate unit power voltage for
servicing. Factory interconnecting wiring is provided
from the disconnect switch to factory supplied system
circuit breakers.
SINGLE-POINT CIRCUIT BREAKER – A unit
mounted circuit breaker with external, lockable
handle (in compliance with N.E.C. Article 440-14);
can be supplied to isolate the power voltage for ser-
vicing. (This option includes the Single-Point Power
connection.)
CONTROL TRANSFORMER – Converts unit power
voltage to 115-1-60 (2.0 or 3.0 KVA capacity). Fac-
tory mounting includes primary and secondary wir-
ing between the transformer and the control panel.
(Factory-mounted)
POWER FACTOR CORRECTION CAPACITORS
– Will correct unit compressor power factors to a
0.90-0.95. (Factory-mounted)
CONTROL OPTIONS
AMBIENT KIT (LOW) – Units will operate to 25.0°F
(-3.9°C). This accessory includes all necessary com-
ponents to permit chiller operation to 0°F (-18°C). (This
option includes the Discharge Pressure Transducer /
Readout Capability option.) For proper head pressure
control in applications below 30°F (-1°C) where wind
gusts may exceed 5 mph, it is recommended that Op-
tional Condenser Louvered Enclosure Panels also be
included. (Factory-mounted)
AMBIENT KIT (HIGH) – Required if units are to operate
when the ambient temperature is above 115°F (46°C).
Includes sun shield panels and discharge pressure
transducers. (This option includes the Discharge Pres-
sure Transducer / Readout Capability option.) (Field-
mounted)
LANGUAGE LCD AND KEYPAD DISPLAY – Spanish,
French, German, and Italian unit LCD controls and key-
pad display available. Standard language is English.
COMPRESSOR, PIPING, EVAPORATOR
OPTIONS
LOW TEMPERATURE BRINE – Required for brine
chilling below 30°F (-1°C) leaving brine temperature for
YLAA0014-0080 models. Option includes resized ther-
mal expansion valve. Low temperature brine is standard
on YLAA0090-0134 models. (Factory-mounted)
CHICAGO CODE RELIEF VALVES – Unit will be pro-
vided with relief valves to meet Chicago code require-
ments. (Factory-mounted)
SERVICE ISOLATION VALVE – Service suction and
discharge (ball type) isolation valves are added to unit
per system. This option also includes a system high
pressure relief valve in compliance with ASHRAE 15.
(Factory-mounted)
HOT GAS BY-PASS – Permits continuous, stable opera-
tion at capacities below the minimum step of compressor
unloading to as low as 5% capacity (depending on both
the unit and operating conditions) by introducing an
articial load on the cooler. Hot gas by-pass is installed
on only refrigerant system #1 on two-circuited units.
(Factory- mounted)