American Standard YSC036A Installation, Operation And Maintenance Manual page 3

Preface and Warnings and Cautions
capacitors before servicing could
result in death or serious injury.
WARNING
R410a Refrigerant!
R-410A refrigerant systems operate
at higher pressures than standard R-
22 systems. Do not use R-22 service
equipment or components on R-
410A refrigerant equipment. If
service equipment is not rated for R-
410A refrigerant, equipment damage
or personal injury may result.
CAUTION
Equipment Damage From
Ultraviolet (UV) Lights!
The manufacturer does not
recommend field installation of
ultraviolet lights in its equipment for
the intended purpose of improving
indoor air quality. High intensity C-
band ultraviolet light is known to
severely damage polymer (plastic)
materials and poses a personal
safety risk to anyone exposed to the
light without proper personal
protective equipment. Polymer
materials commonly found in HVAC
equipment that may be susceptible
include insulation on electrical
wiring, fan belts, thermal insulation,
various fasteners and bushings.
Degradation of these materials can
result in serious damage to the
equipment.
The manufacturer accepts no
responsibility for the performance or
operation of our equipment in which
ultraviolet devices were installed
outside of the manufacturer's factory
or its approved suppliers.
CAUTION
Roof Damage!
System contains oil and refrigerant
under high pressure. Roofs should be
protected from exposure to oils and
refrigerant in the system. If rooftop is
not protected damage to the roof
may occur.
RT-SVX21F-EN 3