Carrier 50BV020-064 用户手册

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

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-UP CHECKLIST

. . . . . . . . . . . . . . . . . . .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

OMNIZONE™

50BV020-064

Water-Cooled and Remote Air-Cooled

Indoor Self-Contained Systems and

Water-Cooled Heat Pumps