40RU
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 2–22..........................
General 2....................................
Uncrating 2..................................
Accessories 2.................................
Unit Positioning 11............................
Unit Isolation 13..............................
Refrigerant and Chilled Water Piping Access 13.....
Refrigerant Piping 13..........................
Chilled Water Piping 17........................
Condensate Drain 18...........................
Fan Motors and Drives 18.......................
Power Supply and Wiring 19....................
Connecting Ductwork 21.......................
Return--Air Filters 21..........................
START--UP 23.................................
SERVICE 23–36...............................
Panels 23....................................
Fan Motor Lubrication 24.......................
Fan Shaft Bearings 24..........................
Centering Fan Wheel 24........................
Fan Shaft Position Adjustment 24................
Individual Fan Wheel Adjustment 25..............
Fan Belts 25.................................
Fan Rotation 25...............................
Fan Pulley Alignment 25.......................
Pulley and Drive Adjustment 25..................
Condensate Drains 25..........................
Return--Air Filters 25..........................
Chilled Water Coil Freeze Protection 26...........
Coil Removal 26..............................
Cleaning Cooling Coil 26.......................
Cleaning Insulation 26.........................
Replacing Filters 26...........................
START--UP CHECKLIST 39--40..................
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.
