York YCAS, Installation Operation & Maintenance

Page: 22 / 216

22 YORK INTERNATIONAL
FORM 201.19-NM6 (804)
DX EVAPORATOR AND STARTER OPTIONS
300 PSIG (21 bar) Waterside Design Working
Pressure
– The DX evaporator waterside is designed
and con struct ed for 300 PSIG (21 bar) working pressure.
(Factory-mounted)
1-1/2" (38 mm) Insulation – Double thickness in su -
la tion provided for enhanced effi ciency.
Flange Accessory – Consists of raised face fl anges to
convert grooved water nozzles to fl anged evaporator
connections. Includes companion flanges for field-
mount ing. See Page 31.
Remote DX Evaporator – Includes the main con-
dens ing unit less the evaporator, re frig er ant and liquid
line de vic es. The insulated evaporator and fi eld acces-
sory kits per re frig er ant circuit are sup plied separately.
The condensing unit is shipped with a nitrogen holding
charge and the evaporator is shipped with a ni tro gen
hold ing charge.
Flow Switch Accessory – Johnson Controls model
F61MG-1C Vapor-proof SPDT, NEMA 4X switch, 150
PSIG (10 bar) DWP, -20°F to 250°F (-29°C to 121°C),
with 1" NPT (IPS) con nec tion for upright mounting in
horizontal pipe. A fl ow switch must be fi eld installed
with each unit. Optional 300 PSIG switch available.
Star-Delta Compressor Motor Starter – Provides ap-
proximately 65% reduced inrush current compared to
across-the-line start (Factory-mounted).
UNIT ENCLOSURE OPTIONS
Wire enclosure – Heavy gauge welded wire mesh
guards mounted on the exterior of the unit (Factory- or
fi eld-mounted).
Louvered panels and wired guards – Louvered pan-
els mounted over the exterior condenser coil faces, and
heavy gauge welded wire mesh guards mounted around
the bottom of the unit (Factory- or fi eld-mounted).
Louvered panels (condenser coils only) – Lou vered
panels are mounted over the exterior condenser coil faces
on the sides of the unit to visually screen and pro tect the
coils (Factory- or fi eld-mounted).
Louvered panels (full unit) enclosure – Louvered
panels over condenser coils and around the bottom of
the unit (Factory- or fi eld-mounted).
FAN OPTIONS
High static fans: Fans and motors suitable for High
External Static conditions to 100 Pa.
SOUND REDUCTION OPTIONS
Low speed fans – Reduced RPM fan motors and al ter -
na tive fan selection for low noise applications.
Compressor sound enclosures – Acoustically
treated metal compressor enclosures.
VIBRATION ISOLATION
Neoprene pad isolation – Recommended for normal
installations. (Field-mounted)
1" (25 mm) spring isolators – Level adjustable, spring
and cage type isolators for mounting under the unit base
rails (Field-mounted).
2" (51 mm) seismic spring isolators – Restrained
Spring-Flex Mountings incorporate welded steel hous-
ing with vertical and horizontal limit stops. Housings de-
signed to withstand a minimum 1.0 g accelerated force in
all directions to 2" (51 mm). Level ad just able, de fl ec tion
may vary slightly by application. (Field- mount ed).
Product Description