JOHNSON CONTROLS
20
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
SECTION 2 – PRODUCT DESCRIPTION
ACCESSORIES AND OPTIONS
Power Options
Single Point Supply Terminal Block
The standard power wiring connection on all models is
a single point power connection to a factory provided
terminal block. Components included are the enclo-
sure, terminal-block and interconnecting wiring to the
compressors. Separate external protection must be sup-
plied, by others, in the incoming power wiring. (Do not
include this option if either the Single-Point Non-fused
Disconnect Switch or Single-point Circuit Breaker op-
tions have been included.) (
Factory-Mounted
)
Single Point Non-Fused Disconnect Switch
An optional unit-mounted disconnect switch with ex-
ternal, lockable handle (in compliance with Article
440-14 of N.E.C.), can be supplied to isolate the unit
power voltage for servicing. Separate external fusing
must be supplied, by others in the power wiring, which
must comply with the National Electrical Code and/or
local codes. (
Factory-Mounted
)
Single Point Circuit Breaker
An optional 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 servicing. (
Factory-Mounted
)
Multiple Point Circuit Breaker
Optional multiple point supply with independent sys-
tem circuit breakers and locking external handles (in
compliance with Article 440-14 of N.E.C) can be fac-
tory supplied. (
Factory-Mounted
).
Control Transformer
Converts unit power voltage to 115-1-60 (0.5 or 1.0
KVA capacity). Factory mounting includes primary
and secondary wiring between the transformer and the
control panel. (
Factory-Mounted
)
Compressor External Overloads
Optional compressor motor overloads can be factory
mounted in the unit control/power panel. This option
will reduce the chiller MCA (minimum circuit ampac-
ity) and allow for reduced wire sizing to the unit. This
option is not available for applications with Leaving
Condenser Water Temperature (LCWT) greater than
105ºF (40.6ºC). (
Factory-Mounted
)
Controls Options
Building Automation System Interface
A standard feature of the YCRL control panel to ac-
cept a pulse width modulated (PWM), 4-20 milliamp,
or 0-10VDC input to reset the leaving chilled liquid
temperature from a Building Automation System.
(
Factory-Mounted
)
Language LCD and Keypad
Standard display language and keypad is in English.
Spanish, French, German, and Italian are available as
an option. (
Factory-Mounted
)
Heat Exchanger Options
Flow Switch
An optional flow switch can be factory supplied for the
evaporator. Vapor-proof SPDT, NEMA 3R switch, 150
PSIG (10.3 bar) DWP, 20°F to 250°F (-29°C to 121°C)
with 1" NPT (IPS) connection for upright mounting in
horizontal pipe. The flow switch or its equivalent must
be furnished with each unit. (
Field mounted
)
Differential Pressure Switch
An alternative option to the paddle-type flow switch.
3-45 PSIG (0.2-3 bar) range with ¼" NPTE pressure
connections. (
Field Mounted
)
Pressure Vessel Codes
Evaporators and condensers are to be supplied (stan-
dard) in conformance with the A.S.M.E. pres sure
codes.
Flanges (ANSI/AWWA C-606 Couplings Type)
Consists of (2) flange adapters for grooved end pipe on
evaporator and condenser. Standard 150 PSI (10.3 bar).
(Field Kit, matching pipe flange by contractor.)
Double Thick Insulation
Double thick (1-1/2") insulation provided on the evap-
orator. (
Factory-Mounted
)
