Johnson Controls YORK Tempo YLAA Series, Installation Operation & Maintenance

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JOHNSON CONTROLS
22
FORM 150.72-NM1 (1020)
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 specific
voltage and options availability.)
(Factory-mounted)
Single-Point Supply Terminal Block
Includes enclosure, terminal-block and interconnecting
wiring to the compressors. Separate external protection
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 disconnect 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 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.
Single-Point Non-Fused Disconnect Switch
With Individual System Breakers
Includes unit-mounted disconnect switch with external,
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
servicing. (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). Factory mounting includes primary
and secondary wiring between the transformer and the
control panel. (Factory-mounted)
Power Factor Correction Capacitors
Will correct unit compressor power factors to between
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 components 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 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 115°F (46°C). Includes discharge
pressure transducers.
Language LCD And Keypad Display
Spanish, French, German, and Italian unit LCD controls
and keypad 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. Option includes resized thermal
expansion valve.
Chicago Code Relief Valves
Unit will be provided with relief valves to meet Chicago
code requirements.
(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 operation 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 artificial load on the
cooler. Hot gas by-pass is installed on only refrigerant
system #1 on two-circuited units. (Factory-mounted)