YORK INTERNATIONAL
13
FORM 450.20-N20 (702)
3
INSTALLATION
SECTION 3
INSTALLATION
Installation Guidelines
This manual assumes the installer is competent in
environments with moving machinery, and is able to
recognize and protect against any inherent hazards,
such as, but not limited to, refrigerants, oil, corrosive
chemicals or gases, materials under pressure, rotating
parts, and both high and low voltages. Each of these
items has the potential, if misused or handled im-
properly, to cause bodily injury or death.
It is the obligation and responsibility of the operating/
service personnel to identify and recognize inherent
hazards, protect themselves, and proceed safely in
completing their tasks. Failure to comply with any of
these requirements could result in serious damage to
the equipment, as well as severe personal injury or
death. In addition to following standard local, state
and country codes and procedures, it is recommended
that a lockout procedure be used to prevent inadvert-
ent start up of equipment during installation and
maintenance procedures.
All wiring should be carried out in a safe and neat
manner and should always comply in all respects to
the latest edition of any local, state or country codes
that may be applicable. The wiring should be in-
stalled in a manner that does not cause a hazard and
is protected against electrical and mechanical dam-
age.
Care should also be taken when mounting enclosures
so access to other equipment within the vicinity is not
restricted.
Environment
YORK ISN equipment must be installed in an
environment that is protected from the direct influ-
ence of the elements and is within the following:
Temperature: 32 to 122° F (0 to 50° C).
Humidity: 10% to 95% non-condensing.
The unit should never be mounted outside the con-
fines of a building. If this cannot be avoided, it may
be mounted inside an enclosure rated at IP65/NEMA
4X or greater. In addition to protection against the
elements, the enclosure must be capable of maintain-
ing the circuit boards at the required temperature and
humidity. This may require the addition of a fan or
heater to maintain the temperature and humidity
inside the enclosure.
WARNING: Never install the compo-
nents in an element that does not
meet the minimum environmental
requirements.
Electrical
Refer to the table titled
Recommended Cable Specifi-
cations
to determine suitable wire sizes to connect the
line voltage feed the devices. The line voltage power
source should be “clean,” separately fused (for either
115 or 230 VAC), and isolated, (using a control
transformer) from other equipment in the plant room
that may generate EMI interference.
Electrical Noise
All electrical equipment has the risk of being affected
by external electrical noise. This noise may take the
form of Radio Frequency Interference (RFI) or
Electro-Magnetic Interference (EMI). To minimize
the affects of electrical noise, mount equipment in a
location away from all possible RFI and EMI
sources. These include high voltage cables, high
voltage transformers, breakers, and high frequency
drives.
Keep line voltage switching loads a minimum of 6 in.
(152 mm) away. Any high voltage equipment, such as
transformers, high horsepower electric motors or high
frequency drives, should be kept a minimum of 30 ft
(9.1 m) away.
All high voltage wiring (>75 volts) must be run in
conduit and kept separate from low voltage commu-
nications wiring. This greatly reduces network
communication problems.
