Carrier 48MPD- Manual

Carrier 48MPD

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Table of Contents:

  • Page 3 – Copy continues on page 14.
  • Page 4 – Table 1 — Physical Data
  • Page 14 – Branch circuit for power supply to unit must be protected; SLAB MOUNT DRAIN; Fig. 9 — Condensate Drain Piping Details
  • Page 15 – — Ground; Fig. 12 — Field Power Wiring Connections
  • Page 16 – Table 5 — Electrical Data
  • Page 17 – Control Wiring; Table 6 — Recommended Sensor and
  • Page 18 – — Switch; Fig. 13 — Space Temperature Sensor Wiring
  • Page 19 – SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION; RED; SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION; Fig. 14 — Space Temperature Sensor Averaging; TB
  • Page 20 – Fig. 15 — Heat Interlock Relay; DSIO — Relay Module; Fig. 17 — Remote Start; TB — Terminal Block; Fig. 18 — Accessory Humidity Control; TB — Terminal Block; Fig. 20 — Indoor Air Quality
  • Page 22 – TRANSDUCER ACCESSORY; DPT — Duct Pressure; SPT — Suction Pressure; Fig. 28 — CCN Building Supervisor
  • Page 23 – Carrier Comfort Network Interface; — The; Table 7 — CCN Connection Approved; VFD; Fig. 29 — Optional VFD — Wiring Connections
  • Page 24 – Air Pressure Tubing —; Fig. 30 — Space Sensor to Communication Bus Wiring
  • Page 25 – Fig. 33 — Air Pressure Tubing Locations
  • Page 26 – Fig. 35 — Flue and Inlet Hood Locations; Fig. 36 — Inlet Hood Assembly
  • Page 27 – Fan Isolator Adjustment —; Remove shipping hard-; Check Compressor Mounting; For applications requiring; Fig. 40 — Outer View, Compressor Mounting; Fig. 39 — Fan isolator Adjustment
  • Page 28 – System Check; Fig. 41 — Compressor Mounting —; Fig. 43 — Rear View of Compressor Mounting
  • Page 29 – Compressor Oil —; Fig. 44 — Operating Oil Levels
  • Page 35 – Controls Configuration and Quick Test; The switch must be set prior to unit operation. To set the; Table 22 — Filter Switch Dirty Set Point
  • Page 36 – Table 23 — HSIO Keypad Key Usage; Fig. 46 — Psychrometric Chart for; Fig. 47 — Wiring Connections for Solid-State
  • Page 37 – Table 24 — Set Point Ranges and Defaults
  • Page 38 – Table 25 — Basic Configuration Data; Gas Pressure Check —
  • Page 39 – General; Operating
  • Page 40 – Table 26 — IGC Control Board LED Alarms; IGC
  • Page 41 – Control Loop Checkout; Table 27 — 48/50MP Units SMG, SCV and MLG Recommended Starting Values
  • Page 42 – IAQ Control Loop Adjustment —; Table 29 — Index of Lead/Lag Circuits and; LEAD CIRCUIT; Final Checks —
  • Page 43 – Default Set Points/Changing Set Points —
  • Page 45 – Table 30 — Variable Frequency Drive (VFD) Display; SERVICE; All unit components can be reached; SEQ; DSPL; REMOTE; RUN; Fig. 49 — VFD Digital Operator
  • Page 46 – Cleaning —
  • Page 47 – Lubrication; Coil Cleaning —; Clean the coils with a vacuum cleaner,; Refrigerant Circuit; Schrader connection for charging liquid refrigerant.; Fig. 52 — Burner Section Detail; Fig. 53 — Removing Heat Exchanger Ceramic
  • Page 49 – Moisture/Liquid Indicator —; ALL OUTDOOR FANS MUST BE OPERATING
  • Page 50 – Table 31 — Pressure Switch Settings,; SWITCH; Low-Pressure Switch —
  • Page 51 – Fig. 61 — Motor Plate Adjustment
  • Page 52 – Fig. 62 — Pulley Alignment
  • Page 53 – Control Modules —
  • Page 54 – Refrigerant Feed Components —
  • Page 55 – TORQUE; TROUBLESHOOTING; Fig. 64 — Condenser Fan Adjustment
  • Page 56 – TROUBLESHOOTING AND DIAGNOSTICS
  • Page 58 – Refer to Fig. 65 for IGC troubleshooting information.
  • Page 60 – PACKAGED SERVICE TRAINING; ] Packaged Service Training
  • Page 61 – II. PRELIMINARY CHECKLIST ITEMS; CONTROL SETTINGS FOR NON-NETWORKED, FREESTANDING UNIT
Loading the manual

Installation, Start-Up and Service

Instructions

CONTENTS

Page

GENERAL

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

2

SAFETY CONSIDERATIONS

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

2

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

Jobsite Survey

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

3

Unit Placement

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

3

Roof Mount

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

3

Slab Mount

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

3

Field-Fabricated Ductwork

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

3

Rigging

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

3

Condensate Drains

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

3

Condensate Coil Shipping Covers

. . . . . . . . . .

3

Install Outdoor Hoods

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

3

Make Electrical Connections

. . . . . . . . . . . . . . . . 14

• POWER SUPPLY

Field Electrical Connections

. . . . . . . . . . . . . . . . 14

• POWER WIRING

Control Wiring

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

• SENSORS
• HUMIDITY CONTROL AND HOT WATER

AND STEAM VALVES

• SPACE TEMPERATURE SENSOR (T55)
• SPACE TEMPERATURE SENSOR (T56)

(CV Applications Only)

• SPACE TEMPERATURE AVERAGING
• HEAT INTERLOCK RELAY (VAV Units Only

— Not Necessary For DAV Applications)

• OPTION AND ACCESSORY CONTROL WIRING

Carrier Comfort Network Interface

. . . . . . . . . . 23

Air Pressure Tubing

. . . . . . . . . . . . . . . . . . . . . . . . 24

Gas Piping (48 Series Units Only)

. . . . . . . . . . . . 26

Installing Flue/Inlet Hoods

(48MP Units Only)

. . . . . . . . . . . . . . . . . . . . . . . . . 26

Fan Isolator Adjustment

. . . . . . . . . . . . . . . . . . . . 27

Check Compressor Mounting

. . . . . . . . . . . . . . . 27

Install Accessories

. . . . . . . . . . . . . . . . . . . . . . . . . 27

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-38

System Check

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Compressor Oil

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Evaporator-Fan Belts, Pulleys,

and Sheaves

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Controls Configuration and Quick Test

. . . . . . 35

• SUPPLY FAN STATUS SWITCH (FS)
• CHECK FILTER SWITCH (CFS)
• ENTHALPY CONTROL SET POINT
• KEYPAD AND DISPLAY MODULE (HSIO)

CONFIGURATION

• SET UNIT TYPE
• ENTER JOB SET POINT VALUES
• CONFIGURE UNIT CONTROLS AND

FUNCTIONS

• QUICK TEST FUNCTION

Page

Gas Pressure Check

. . . . . . . . . . . . . . . . . . . . . . . . 38

Check Supply Fan Rotation

. . . . . . . . . . . . . . . . . 38

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-42

Initial Check

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Operating Sequences

. . . . . . . . . . . . . . . . . . . . . . 39

• SUPPLY FAN
• ECONOMIZER
• COOLING (All Units)
• OCCUPIED COOLING
• UNOCCUPIED COOLING
• OVERRIDES
• ADAPTIVE OPTIMAL START
• ADAPTIVE OPTIMAL STOP

(CV Applications Only)

• GAS HEATING, OPERATION

(48MP Units Only)

Control Loop Checkout

. . . . . . . . . . . . . . . . . . . . . 41

IAQ Control Loop Adjustment

. . . . . . . . . . . . . . . 42

Lead/Lag Circuits

. . . . . . . . . . . . . . . . . . . . . . . . . . 42

Final Checks

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

CONTROL SYSTEM

. . . . . . . . . . . . . . . . . . . . . . . . 42-45

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Components

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

• PROCESSOR MODULE NO. 1
• PROCESSOR MODULE NO. 2
• HIGH-VOLTAGE RELAY MODULES (DSIO)
• KEYPAD AND DISPLAY MODULE (HSIO)

Default Set Points/Changing Set Points

. . . . . 43

Motor Protection

. . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Variable Frequency Drive (VFD)

. . . . . . . . . . . . . 43

• DISPLAY AND KEYPAD

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45-55

Service Access

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

• UNIT CONTROL BOX
• COMPRESSORS
• LIQUID SERVICE VALVES, SOLENOID VALVES,

FILTER DRIERS, AND SIGHT GLASSES

• EVAPORATOR-FAN MOTORS, PULLEYS, AND

BELTS

• POWER EXHAUST MOTORS, PULLEYS, AND

BELTS

• GAS HEAT SECTION
• UNIT CONTROL BOX
• ECONOMIZER DAMPER MOTORS
• RETURN-AIR FILTERS
• CONDENSER FANS AND FAN MOTORS

Cleaning

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

46

48MPD,MPE62L-10R

50MP62L-10R

Single Package Electric Cooling Units

and Gas Heating/Electric Cooling Units

With Product Integrated Controls

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

Book 1

1

Tab

1a 1b

PC 111

Catalog No. 534-893

Printed in U.S.A.

Form 48/50MP-1SI

Pg 1

12-98

Replaces: 50MP-1SI

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Summary

Page 3 - Copy continues on page 14.

INSTALLATION Jobsite Survey — Complete the following checks be- fore installation.1. Consult local building codes and the NEC (National Electrical Code) (ANSI/NFPA [National Fire ProtectionAssociation] 70) for special installation requirements. 2. Determine unit location (from project plans) or sele...

Page 4 - Table 1 — Physical Data

Table 1 — Physical Data BASE UNIT 48/50MP 62L 70M 82N NOMINAL CAPACITY (tons) 80 90 105 OPERATING WEIGHT (lb) Base Unit (48MP/50MP) 16,810/16,550 18,060/17,800 22,660/22,400 Copper Condenser Coils 675 725 725 Exhaust Fan 1,675 1,775 2,375 COMPRESSORS Semi-Hermetic Number of Refrigerant Circuits 2 2 ...

Page 14 - Branch circuit for power supply to unit must be protected; SLAB MOUNT DRAIN; Fig. 9 — Condensate Drain Piping Details

Make Electrical Connections POWER SUPPLY — Electrical characteristics of availablepower supply must agree with unit nameplate rating. Supplyvoltage must be within the limits shown in Table 5. Field Wire Routing — Field wiring is brought into the unitthrough the bottom of the control box. A 3 5 ⁄ 8 -...

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