Accessories And Options - York R-407C Optimized Manual

Accessories and Options

• CONTROL CIRCUIT TERMINAL STRIP – (Models
0218 - 0418) – Provides power input terminals for field
provided power input in lieu of factory mounted control
circuit transformer. 115V, 1∅ Control Circuit Power
Terminal Strip located in the Microprocessor Panel
to accept a field provided control power circuit with
appropriate branch circuit protection in accordance
with applicable Local and National codes. Provides
unit control circuit power, including supply to the 24V,
fused Microprocessor panel transformer.
• CONTROL CIRCUIT TRANSFORMER (Models
0098 - 0208) - Control circuit transformer provides
115V60/1∅ power to the unit control system.
• COMPRESSOR POWER CONNECTIONS – See
Electrical Data on pages 94 through 105 for specific
voltage and options availability. Separate external
branch circuit protection and disconnecting means
must be supplied by others in accordance with appli-
cable Local and National codes. (Factory-mounted)
Multiple Point Supply – Standard field power
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wiring connection on all models is Multiple Point
Power Connection to factory provided Terminal
Blocks. Two field supplied electrical power cir-
cuits with appropriate branch circuit protection
provide power to each of two motor control
center cabinets, located adjacent to each other
at one end of the chiller. Each cabinet contains
starter elements for one or two compressors and
their associated fan motor starters.
Optional to the Terminal Blocks for field power
connection are Non-Fused Disconnects with ex-
ternal lockable handles, or (on two-compressor
machines only) Circuit Breakers with external
lockable handles. Also optional (on 3 and 4-
compressor machines equipped with multiple
point power supply) are individual system cir-
cuit breakers per each compressor with external
lockable handles.
‚ Single Point Supply – Optional to the Multiple
Point power connection configurations are Single
Point Supply arrangements. A wide variety of
these single-point Options are offered to satisfy
most any customer connection requirement:
w Single Point with Individual System Breakers
– These options consist of field connection to either
a unit mounted Terminal Block, or a Non-Fused
Disconnect Switch with external, lockable handle
(in compliance with Article 440-14 of N.E.C., to iso-
late unit power supply for service). Factory wiring
is provided from the Terminal Block or Disconnect
Switch to factory supplied Individual System Circuit
8
Breakers with external, lockable handles in each of
the two compressor motor control centers.
w Single Point Supply – Also optional (on two-
compressor machines only) are Single Point Sup-
ply configurations for field connection of a single
electrical circuit to: Terminal Block, Non-Fused
Disconnect Switch with lockable external handle
(in compliance with Article 440 of N.E.C., to isolate
unit power supply for service), or Circuit Breaker
with lockable external handle. Factory wiring is
provided from the Terminal Block, Disconnect
Switch, or Breaker directly to the starter compo-
nents in each of the two compressor motor control
centers.
• STAR (WYE)-DELTA COMPRESSOR MOTOR
STARTER – Provides smooth starting and ap-
proximately 65% reduced inrush current compared
to across the line type start. Two-compressor units
equipped with any of the single-point power con-
nection options and Star-Delta starters must also be
equipped with Individual System Circuit Breakers op-
tion. Three- and four-compressor units with Star-Delta
starters must also include Individual System Circuit
Breakers option. (Factory-mounted) See Electrical
Data (pages 94 to 105) for availability and coordination
with individual system short circuit protection.
• CONDENSER COIL PROTECTION – Standard con-
denser coil construction materials include aluminum
fins, copper tubes, and galvanized steel supports for
generally good corrosion resistance. However, these
materials are not adequate for all environments. The
system designer can take steps to inhibit coil corrosion
in harsh applications and enhance equipment life by
choosing from these options based on project design
parameters and related environmental factors. For
additional application recommendations refer to Form
150.12-ES1. (Factory-mounted)
• PRE-COATED CONDENSER COILS – The air-cooled
condenser coils are constructed of black epoxy-coated
aluminum fins. This can provide corrosion resistance
comparable to copper-fin coils in typical seashore loca-
tions. Either these or the post-coated coils (below), are
recommended for units being installed at the seashore
or where salt spray may hit the unit.
• POST-COATED EPOXY CONDENSER COILS – The
unit is built with dipped-cured coated condenser coils.
This is another choice for seashore and other corrosive
applications (with the exception of strong alkalies, oxidiz-
ers and wet bromine, chlorine and fluorine in concentra-
tions greater than 100 ppm).
YORK INTERNATIONAL