York R-407C Optimized, Manual, Page: 116 / 120

116
YORK INTERNATIONAL
117
YORK INTERNATIONAL
FORM 201.19-EG4
Guide Specifications
(Continued)
cated 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. For Models 0218 - 0418.
D. Condenser Coil Environmental Protection:
1. PRE-COATED FIN CONDENSER COILS – The
air-cooled condenser coils are constructed of black
epoxy-coated aluminum fins. This can provide cor-
rosion resistance comparable to copper-fin coils
in typical seashore locations. 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.
2. COPPER FIN: Provide copper fins in lieu of alu-
minum.
3. POST-COATED EPOXY DIPPED CONDENSER
COILS – The unit is built with dipped-cured con-
denser coils. This is another choice for seashore
and other corrosive applications (with the excep-
tion of strong alkalies, oxidizers and wet bromine,
chlorine and fluorine in concentrations greater
than 100 ppm).
E.Protective Chiller Panels (Factory-mounted):
1. Louvered Panels (condenser coils only): Painted
steel as per remainder of unit cabinet, over external
condenser coil faces.
2. Wire Panels (full unit): Heavy gauge, welded wire-
mesh, PVC coated to resist corrosion, to protect
condenser coils from incidental damage and restrict
unauthorized access to internal components.
3. Louvered Panels (full unit): Painted steel as per
remainder of unit cabinet, to protect condenser coils
from incidental damage, visually screen internal
components, and prevent unauthorized access to
internal components.
4. Louvered/Wire Panels: Louvered steel panels
on external condenser coil faces, painted as per
remainder of unit cabinet. Heavy gauge, welded
wire-mesh, PVC coated to resist corrosion, around
base of machine to restrict unauthorized access.
F. Evaporator options:
1. Provide 1-1/2" cooler insulation in lieu of standard
3/4".
2. Provide DX Cooler with 300 PSIG water-side design
working pressure in lieu of standard 150 PSIG
3. Provide Raised Face Flanges for cooler nozzles:
a. 150 PSIG, welded flanges (field kit, mate
supplied).
b. 300 PSIG, welded flanges (factory installed, no
mate supplied).
c. 150 PSIG, Victaulic™ Flanges (field kit, no mate
supplied).
G.Flow Switch (Field-mounted): Vapor proof SPDT,
NEMA 4X switch ( ___ 150 PSIG or ___ 300 PSIG),
-20°F to 250°F.
H. High External Static Pressure Fans and Motors: Fac-
tory installed fans and motors for up to 0.4 inches
of water (100Pa) external static pressure at nominal
condenser air flow.
I. Microprocessor Membrane Keypad Graphics on in
lieu of Standard English:
1. French language.
2. Spanish language.
J. Thermal Storage: Leaving chilled liquid setpoint range
for charge cycle to 20°F (-6.7°C) (optional to as low
as 15°F (-9.4°C) minimum), automatic setpoint reset
of up to 40°F (22°C).
K. Low Temperature Process Brine: Leaving chilled
liquid setpoint range 20°F (-6.7°C) to 55°F (13°C);
optional to 15°F (-9.4°C).
L. Building Automation System (EMS) Reset Interface:
Chiller to accept 4 to 20mA, 0 to 10 VDC, or discrete
contact closure input to reset the leaving chilled liq-
uid temperature, or percent full load amps (current
limit).
M.Remote Control Panel (Field-mounted): Auxiliary
panel for remote user interface for functions normally
made at the unit control center.
N. Multi-Unit Sequence Control (Field-mounted): Sep-
arate Sequencing control center provided to permit
control of up to eight chillers in parallel based on
mixed liquid temperature.
O. Sound Reduction (Factory-mounted):
1. Low speed, reduced noise fans
2. Acoustic Silencer Kit
3. Compressor Sound Blankets
P. Vibration Isolation (Field-mounted):
1. Neoprene Isolators.
2. 1 Inch Deflection Spring Isolators: Level adjustable,
spring and cage type isolators for mounting under
the unit base rails.
3. 2 Inch Deflection Seismic Isolators: Level ad-
justable, restrained mounts in rugged welded
steel housing with vertical and horizontal limit
stops. Housings shall be designed to withstand a
minimum 1.0g accelerated force in all directions to
2".