York YCAL0041 - Manual (Page 8)

YORK INTERNATIONAL 8
chilling below 30°F (-1°C) leaving brine temperature
for YCAL0041 - 0065 models. Option includes resized
thermal expansion valve. ( Factory-Mounted)
CHICAGO CODE RELIEF VALVES – Unit will be pro-
vided with relief valves to meet Chicago code require-
ments. ( 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 opera-
tion 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)
DX COOLER 300 PSIG (21 bar) DWP WATERSIDE
– The waterside will be of 300 PSIG (21 bar) instead of
the standard 150 PSIG DWP. 300 PSIG R.F. flanges are
included on the DX cooler nozzles. ( Factory-Mounted.)
The companion flanges will be field-supplied by oth-
ers.
FLANGES (VICTAULIC TYPE) – Consists of two (2)
Flange adapters for grooved end pipe (standard 150
psi [10.5 bar] cooler).
FLOW SWITCH – The flow switch or its equivalent must
be furnished with each unit.
150 PSIG (10.5 bar) DWP – For standard units. Johnson
Controls model F61MG-1C Vapor-proof SPDT, NEMA
4X switch (150 PSIG [10.5 bar] DWP), -20°F to 250°F
(-29°C to 121°C), with 1” NPT connection for upright
mounting in horizontal pipe. ( Field-Mounted.)
300 psig (21 bar) DWP – For units with optional 300
PSIG (21 bar) DX cooler. McDonnell & Miller model
FS74W Vapor-proof SPDT, NEMA 4X switch (300 PSIG
(21 bar) DWP), -20°F to 300°F (-29°C to 149°C), with 1¼
inch MPT connection for upright mounting in horizontal
pipe. ( Field-Mounted.)
DIFFERENTIAL PRESSURE SWITCH – Alternative
to an above mentioned flow switch. Pretempco model
DPS300AP40PF-82582-5 (300 psi max. working pres-
sure), SPDT 5 amp 125/250VAC switch, Range 0 - 40
PSID, deadband 0.5 - 0.8 psi, with 1/4” NPTE Pressure
Connections.
REMOTE DX COOLER – A split system arrangement
with the cooler, leaving & return water sensors, liquid
line solenoid valves, filter driers, sightglasses & TXVs
shipped loose for field connection to the air-cooled con-
densing section. The DX cooler and outdoor section will
have a nitrogen holding charge. Interconnecting rigid
piping, wiring and refrigerant are by others. Includes
YORK Service startup. See Form 150.62-NM1.1 (200)
for other application information. (This option includes
the Crankcase Heater option.)( Field-Mounted.)
CONDENSER AND CABINET OPTIONS:
Condenser coil protection against corrosive environ-
ments is available by choosing any of the following op-
tions. For additional application recommendations, refer
to FORM 150.12-ES1. ( Factory-Mounted.)
PRE-COATED FIN CONDENSER COILS – The unit's
coils are constructed with black epoxy coated aluminum
fins. This can provide corrosion resistance comparable
to copper-fin coils in typical seashore locations. Either
these or the post-coated coils (below), are recommend-
ed for units being installed at the seashore or where salt
spray may hit the unit.
POST-COATED DIPPED CONDENSER COILS – The
unit's coils are constructed with dipped-cured condenser
coils. This is another choice for seashore and other
corrosive applications (with the exception of strong al-
kalies, oxidizers and wet bromine, chlorine and fluorine
in concentrations greater than 100 ppm).
COPPER FIN CONDENSER COILS – The unit's coils
are constructed with copper fins. (This is not recom-
mended for units in areas where they may be exposed
to acid rain.)
ENCLOSURE PANELS (UNIT) – Tamperproof En-
closure Panels prevent unauthorized access to units.
Enclosure Panels can provide an aesthetically pleas-
ing alternative to expensive fencing. Additionally, for
proper head pressure control, YORK recommends the
use of :
LOUVERED PANELS (Full Unit) – Louvered panels
surround the front, back, and sides of the unit. They
prevent unauthorized access and visually screen unit
components. Unrestricted air flow is permitted through
generously sized louvered openings. This option is ap-
plicable for any outdoor design ambient temperature up
to 115°F (46°C). ( Factory-Mounted.)
SOUND ATTENUATION – One or both of the follow-
ing sound attenuation options are recommended for