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524J
PACKAGED AIR--HANDLING UNITS, 60 Hz
WITH PURON
R
(R--410A) REFRIGERANT
SIZES 25, 28, 30
Installation, Start--Up
and Service Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 1...................
PRE--INSTALLATION 2.........................
Moving and Storage 2..........................
Rigging 2....................................
INSTALLATION 2–18..........................
General 2....................................
Uncrating 2..................................
Accessories 2.................................
Unit Positioning 9.............................
Unit Isolation 11..............................
Refrigerant Piping Access 11....................
Refrigerant Piping 11..........................
Condensate Drain 14...........................
Fan Motors and Drives 15.......................
Power Supply and Wiring 15....................
Connecting Ductwork 17.......................
Return--Air Filters 17..........................
START--UP 19.................................
SERVICE 19–32...............................
Panels 19....................................
Fan Motor Lubrication 20.......................
Fan Shaft Bearings 20..........................
Centering Fan Wheel 20........................
Fan Shaft Position Adjustment 20................
Individual Fan Wheel Adjustment 21..............
Fan Belts 21.................................
Fan Rotation 21...............................
Fan Pulley Alignment 21.......................
Pulley and Drive Adjustment 21..................
Condensate Drains 21..........................
Return--Air Filters 21..........................
Coil Removal 22..............................
Cleaning Cooling Coil 22.......................
Cleaning Insulation 22.........................
Replacing Filters 22...........................
START--UP CHECKLIST 35--36..................
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal
injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for
information or assistance. The qualified installer or
agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual
instructions package
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazing operations and
have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
national electrical codes (in USA, ANSI/NFPA70,
National Electrical Code (NEC); in Canada, CSA C22.1)
for special requirements.
It is important to recognize safety information. This is the
safety--alert symbol
. When you see this symbol on the
unit and in instructions or manuals, be alert to the
potential for personal injury.
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the
safety--alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify
unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.