SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
Installation, Operation,
and Maintenance
Packaged Rooftop Air Conditioners
Precedent™ — Cooling and Gas/Electric
3to10Tons–60Hz
Model Numbers
YSC033G - YSC063G YHC037E - YHC067E
YSC036 - YSC060G YHC036E - YHC072E
YSC072F - YSC120F YHC120F
YHC048F - YHC060F YHC072F - YHC102F
RT-SVX21U-EN
May 2016
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