Carrier 50BV020-064 specifications Installation, Start-Upand Service Instructions, Contents

OMNIZONE™ 50BV020-064 Water-Cooled and Remote Air-Cooled

Indoor Self-Contained Systems and Water-Cooled Heat Pumps

Installation, Start-Up and

Service Instructions

CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .1,2 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . . . . 2

Constant Volume (CV) Units. . . . . . . . . . . . . . . . . . . . . . 2

Variable Air Volume (VAV) Units . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

Step 1 — Complete Pre-Installation Checks . . . . . . 3

•EXAMINE THE UNIT

•UNIT STORAGE

•MODULAR UNITS

Step 2 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 3

•REMOVE PACKAGING

•UNIT LOCATION

•UNIT PLACEMENT

•ACOUSTICAL CONSIDERATIONS

•ASSEMBLING MODULAR UNITS

Step 3 — Install Ductwork . . . . . . . . . . . . . . . . . . . . . . . 19

•DUCT STATIC PRESSURE PROBE AND TUBING (VAV Only)

•DUCT HIGH-STATIC (DHS) LIMIT SWITCH (VAV Only)

Step 4 — Make Piping Connections . . . . . . . . . . . . . 21

•CONDENSER WATER PIPING (Water-Cooled Only)

•EVAPORATOR CONDENSATE DRAIN

•HOT WATER HEATING COIL (Optional)

•WATER ECONOMIZER (Optional)

•REMOTE REFRIGERANT PIPING (Remote Air-Cooled Only)

Step 5 — Complete Electrical Connections. . . . . . 24

•POWER WIRING

•CONTROL WIRING (CV Only)

•REMOTE CONDENSER FAN CONTACTOR WIRING

•CONTROL WIRING (VAV Only)

•SUPPLY AIR TEMPERATURE SENSOR (SAT)

•SMOKE DETECTOR/FIRE ALARM SHUTDOWN (FSD)

•ALARM (ALARM) AND WARNING (WARN) OUTPUTS

•REMOTE OCCUPANCY (ROCC)

•RETURN AIR TEMPERATURE SENSOR (RAS)

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-48 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

•CRANKCASE HEATERS

•CONFIRM THE INPUT POWER PHASE SEQUENCE

•INTERNAL WIRING

•RETURN-AIR FILTERS

•COMPRESSOR MOUNTING

•REFRIGERANT SERVICE PORTS

CV Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

•EVAPORATOR FAN

•COOLING

•HEATING (Heat Pump Units Only)

VAV Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

•PERFORM AUTOMATIC RUN TEST

•CHECK VFD

•POWER UP LID DISPLAY

Page

•LOG ON TO THE LID DISPLAY

•CHANGE THE DEFAULT PASSWORD

•SET THE CLOCK

•CONFIGURE SCHEDULES

•PROGRAM SET POINTS

•CHECK SYSTEM PARAMETERS

•DISPLAY ALARM HISTORY

•CONFIGURE THE CUSTOM PROGRAMMING SELECTIONS

•SET CONTROLLER ADDRESS

•LOG OFF FROM THE CONTROLLER

Sequence of Operation (CV Only) . . . . . . . . . . . . . . . 47

• WATER ECONOMIZER COOLING

Sequence of Operation (VAV Only) . . . . . . . . . . . . . . 48

•SUPPLY FAN

•COMPRESSOR COOLING

•WATER ECONOMIZER COOLING

•COOLING RESET

Diagnostic Features (CV Only) . . . . . . . . . . . . . . . . . . 48 VAV Control and VFD Diagnostics. . . . . . . . . . . . . . . 48

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Fan Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 49

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-51

Cleaning Unit Exterior. . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Coil Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Condensate Drains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Water-Cooled Condensers . . . . . . . . . . . . . . . . . . . . . . 49

•GRAVITY FLOW METHOD

•FORCED CIRCULATION METHOD

Fan Motor Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Fan Bearing Lubrication . . . . . . . . . . . . . . . . . . . . . . . . 50

Fan Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

• ALIGNMENT

Evaporator Fan Performance Adjustment . . . . . . . 51

• BELT TENSION ADJUSTMENT

Charging the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

• REMOTE AIR-COOLED UNITS

Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 51-65

Forcing and Clearing an Input or Output

(VAV only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 START-UPCHECKLIST . . . . . . . . . . . . . . . . . . .CL-1, CL-2

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioning components and equipment can be dangerous. Only trained, qualified installers and service mechanics should install, start- up, and service this equipment.

When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500001-01 Printed in U.S.A. Form 50BV-3SI Pg 1 10-08 Replaces: 50BV-2SI