Carrier 40RU User's Manual
40RU
Packaged Air--Handling Units
60 Hz
With PuronR (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.
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