JOHNSON CONTROLS
18
FORM 150.67-NM2
ISSUE DATE: 01/31/2019
SECTION 2 – PRODUCT DESCRIPTION
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 servicing (this
option includes the Single-Point Power connection).
CONTROL TRANSFORMER – Converts unit pow-
er voltage to 115-1-60 (0.5 or 1.0 KVA capacity). Fac-
tory mounting includes primary and secondary wiring
between the transformer and the control panel (Facto-
ry-Mounted).
POWER FACTOR CORRECTION CAPACI-
TORS – Will correct unit compressor power factors to
a 0.90-0.95 (Factory-Mounted).
Control Options
AMBIENT KIT (LOW) – Units will operate to 25 °F
(-4 °C). This accessory includes all necessary compo-
nents 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 25 °F (-4 °C), where
wind gusts may exceed five mph, it is recommended
that Optional Condenser Louvered Enclosure Panels
also be included (Factory-Mounted).
AMBIENT KIT (HIGH) – Required if units are to
operate when the ambient temperature is above 110 °F
(43 °C). Includes discharge pressure transducers. (This
option includes the Discharge Pressure Transducer /
Readout Capability option) (Field-Mounted).
BUILDING AUTOMATION SYSTEM INTER-
FACE – The factory addition of a Printed Circuit
Board to accept a 4-20 milliamp, 0-10VDC or contact
closure input to reset the leaving chiller liquid tem-
perature from a Building Automation System. (Only
one of following options can be offered on a unit at
a time: BAS, Remote Control Panel or Multi-unit Se-
quence Control) (Factory-Mounted). (The standard
unit capabilities include remote startstop, remote water
temperature reset via a PWM input signal or up to two
steps of demand (load) limiting depending on model).
(The standard control panel can be directly connected
to a YORK Building Automated System via the stan-
dard onboard RS485 communication port).
LANGUAGE LCD AND KEYPAD DISPLAY –
Spanish, French, and German unit LCD controls and
keypad displays are available. Standard language is
English.
DISCHARGE PRESSURE TRANSDUCERS AND
READOUT CAPABILITY – The addition of pres-
sure transducers allows models to sense and display
discharge pressure. This is recommended for brine
chilling applications. (This option is included with ei-
ther the low or high ambient kits) (Factory-Mounted).
• Suction Pressure Transducers: Permits unit to
sense and display suction pressure. This capabil-
ity is standard on YCAL0019-0066 models.
MOTOR CURRENT MODULE – Capable of moni-
toring compressor motor current. Provides extra pro-
tection against compressor reverse rotation, phase-loss
and phase imbalance. Option consists of one module
per electrical system (Factory-Mounted).
MULTI-UNIT SEQUENCING – A separate Sequenc-
ing Control Center can be provided to handle sequenc-
ing control of up to eight chillers in parallel based on
mixed liquid temperature (interconnecting wiring by
others). (Only one of following options can be offered
on a unit at a time: BAS, Remote ControSl Panel or
Multi-unit Sequence Control) (Factory-Mounted).
COMPRESSOR, PIPING, EVAPORATOR
OPTIONS
LOW TEMPERATURE BRINE – Required for brine
chilling below 30 °F (-1 °C) leaving brine temperature
for YCAL0019 – 0066 models. Option includes resized
thermal expansion valve (Factory-Mounted).
CHICAGO CODE RELIEF VALVES – Unit will be
provided with relief valves to meet Chicago code re-
quirements (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 op-
eration at capacities below the minimum step of com-
pressor unloading to as low as 5% capacity (depending
on both the unit and operating conditions) by introduc-
ing an artificial load on the cooler. Hot gas by-pass is
installed on only refrigerant system #1 on two-circuit-
ed units (Factory-Mounted).
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