Accessories And Options - York YLAA Series Installation Operation & Maintenance

SECTION 2 – PRODUCT DESCRIPTION

ACCESSORIES AND OPTIONS

Power Options
Compressor Power Connections
Single-point terminal block connection(s) are provid-
ed 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 compres-
sor-power wiring. (Do not include this option if either
the Single-Point Non-Fused Disconnect Switch or Sin-
gle-Point Circuit Breaker options have been included.)
Single-Point Non-Fused Disconnect Switch
Unit-mounted disconnect switch with external, lockable
handle (in compliance with Article 440-14 of N.E.C.),
can be supplied to isolate the unit power voltage for ser-
vicing. 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 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)
Control Options
Ambient Kit (Low)
Units will operate to 30°F (-1.1°C). This accessory in-
cludes all necessary components to permit chiller opera-
tion 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 recom-
mended that Optional Condenser Louvered Enclosure
Panels also be included. (Factory-mounted)
18
High Ambient Kit With Sunshield
Allows units to operate when the ambient temperature
is above 115°F (46°C). Includes sun shield panels and
discharge pressure transducers.
Language LCD and Keypad Display
Spanish, French, German, and Italian unit LCD con-
trols and keypad display available. Standard language
is English.
Compressor, Piping, Evaporator Options
Low Temperature Glycol
Replaces standard Thermostatic Expansion Valves
with Electronic Expansion Valves to achieve leaving
glycol temperatures as low as 10°F (-12°C). Required
for any leaving liquid temperature below 30°F (-1°C).
Electronic Expansion Valves permit operation at both
low temperatures and comfort cooling applications
without a capacity loss or derate at either condition.
(Factory installed)
Chicago Code Relief Valves
Unit will be provided with relief valves to meet Chi-
cago code requirements. (Factory-Mounted)
Service Suction Isolation Valve
Service suction (ball-type) isolation valves are added
to unit per system (discharge service ball-type isolation
valve is standard on each circuit). (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 operat-
ing 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)
Flanges (ANSI/AWWA C-606 couplings Type)
Consists of (2) Flange adapter for grooved end pipe (stan-
dard 150 psi [10.5 bar] cooler). (Not available on optional
DX cooler 300 PSIG DWP waterside.) (Field-mounted)
Flow Switch
A thermal dispersion type flow switch provides ac-
curate, low maintenance flow proving and is included
standard. It is factory wired and installed in the exten-
sion pipe between evaporator outlet and edge of chill-
er. The extension pipe is secured to the chiller frame
for shipping to avoid risk of damage to evaporator
FORM 150.72-ICOM6
ISSUE DATE: 12/29/2017
JOHNSON CONTROLS