Carrier R-410A manual Installation, Start-Up Service Instructions

40RU

Packaged Air-Handling Units 60 Hz

with Puron® (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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–20

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Unit Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Refrigerant and Chilled Water Piping Access . . . . . . 11

Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chilled Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . . . 16

Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . 17

Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–34

Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fan Motor Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Centering Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fan Shaft Position Adjustment . . . . . . . . . . . . . . . . . . . 22

Individual Fan Wheel Adjustment . . . . . . . . . . . . . . . . 22

Fan Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fan Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fan Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Pulley and Drive Adjustment . . . . . . . . . . . . . . . . . . . . 23

Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chilled Water Coil Freeze Protection . . . . . . . . . . . . 23

Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Cleaning Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Cleaning Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Replacing Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1, CL-2

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.