York YR 用户手册
3
YORK INTERNATIONAL
FORM 160.81-EG1
Introduction
The YORK M
AX
E YR Chiller offers a complete combina-
tion of features for total owner satisfaction.
MATCHED COMPONENTS MAXIMIZE EFFICIENCY
Actual chiller efficiency cannot be determined by ana-
lyzing the theoretical efficiency of any one chiller com-
ponent. It requires a specific combination of heat ex-
changer, compressor, and motor performance to achieve
the lowest system IPLV/NPLV. YORK M
lyzing the theoretical efficiency of any one chiller com-
ponent. It requires a specific combination of heat ex-
changer, compressor, and motor performance to achieve
the lowest system IPLV/NPLV. YORK M
AX
E chiller tech-
nology matches chiller system components to provide
maximum chiller efficiency under actual – not just theo-
retical – operating conditions.
maximum chiller efficiency under actual – not just theo-
retical – operating conditions.
REAL-WORLD ENERGY PERFORMANCE
YORK pioneered the term “Real-World Energy” to il-
lustrate the energy-saving potential of focusing on chiller
performance during off-design conditions. Off-design
is not only part-load, but full-load operation as well, with
reduced entering condenser water temperatures
(ECWTs). This is where chillers operate 99% of the time,
and where operating costs add up.
lustrate the energy-saving potential of focusing on chiller
performance during off-design conditions. Off-design
is not only part-load, but full-load operation as well, with
reduced entering condenser water temperatures
(ECWTs). This is where chillers operate 99% of the time,
and where operating costs add up.
The YR M
AX
E chillers are the only chillers designed to
operate on a continuous basis with cold ECWT and full
condenser flow at all load points, taking full advantage
of Real-World conditions. This type of operation benefits
the cooling tower as well; reducing cycling of the fan
motor and ensuring good coverage of the cooling fill.
condenser flow at all load points, taking full advantage
of Real-World conditions. This type of operation benefits
the cooling tower as well; reducing cycling of the fan
motor and ensuring good coverage of the cooling fill.
YORK M
AX
E chillers offer the most efficient Real-World
operation of any chiller, meaning lower operating costs
and an excellent return on your chiller investment.
and an excellent return on your chiller investment.
HIGH-EFFICIENCY OIL SEPARATOR
M
AX
E YR Screw Chillers utilize high-efficiency oil sepa-
ration, limiting oil carry-over to less than 500 ppm. Oil
is vital in screw compressors for lubrication, rotor seal-
ing and cooling. However, oil in the evaporator can lead
to reduced heat transfer and reduced system perfor-
mance. The high-efficiency oil separator keeps the oil
in the lube circuit and maximizes heat transfer efficiency.
is vital in screw compressors for lubrication, rotor seal-
ing and cooling. However, oil in the evaporator can lead
to reduced heat transfer and reduced system perfor-
mance. The high-efficiency oil separator keeps the oil
in the lube circuit and maximizes heat transfer efficiency.
HIGH-EFFICIENCY HEAT EXCHANGERS
M
AX
E chiller heat exchangers offer the latest technology
in heat transfer surface design to give you maximum
efficiency and compact design. Waterside and
refrigerant-side design enhancements minimize both en-
ergy consumption and tube fouling. The “skip-fin” design
at all intermediate tube supports provides maximum tube
wall thickness at the support area to extend tube life.
efficiency and compact design. Waterside and
refrigerant-side design enhancements minimize both en-
ergy consumption and tube fouling. The “skip-fin” design
at all intermediate tube supports provides maximum tube
wall thickness at the support area to extend tube life.
FACTORY PACKAGING
REDUCES FIELD LABOR COSTS
REDUCES FIELD LABOR COSTS
YORK M
AX
E screw chillers are designed to keep instal-
lation costs low. Where installation access is not a
problem, the unit can be shipped completely packaged,
requiring minimal piping and wiring to complete the
installation.
problem, the unit can be shipped completely packaged,
requiring minimal piping and wiring to complete the
installation.
For those units utilizing a factory installed Solid-State
Starter, the three power leads provide all power to the
chiller and its auxiliaries.
Starter, the three power leads provide all power to the
chiller and its auxiliaries.
TAKE ADVANTAGE OF COLDER COOLING TOWER
WATER TEMPERATURES
WATER TEMPERATURES
YORK M
AX
E screw chillers are designed to take full ad-
vantage of colder cooling tower water temperatures,
which are naturally available during most operating
hours. Considerable energy savings are available by
letting tower water temperature drop, rather than artifi-
cially holding it above 75°F (23.9°C), especially at low
load, as some chillers require.
which are naturally available during most operating
hours. Considerable energy savings are available by
letting tower water temperature drop, rather than artifi-
cially holding it above 75°F (23.9°C), especially at low
load, as some chillers require.
U.L. ACCEPTANCE – YOUR ASSURANCE
OF RELIABILITY
OF RELIABILITY
YORK M
AX
E screw chillers are approved for listing by
Underwriter’s Laboratories for the United States and
Canada. Recognition of safety and reliability is your as-
surance of trouble-free performance in day-to-day build-
ing operation.
Canada. Recognition of safety and reliability is your as-
surance of trouble-free performance in day-to-day build-
ing operation.