Carrier 48EK- Manual

Carrier 48EK

Carrier 48EK– Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – attached to the; Instructions continued on page 28.
  • Page 19 – Fig. 17 — Rigging Information; UNIT
  • Page 20 – RIGGING WEIGHTS; hoods. Includes 45 lbs for the economizer hood packaging.
  • Page 26 – Table 2 — Operating Weights
  • Page 27 – Table 3 — Evaporator Fan Motor Data
  • Page 28 – TOP VIEW; Fig. 20A — Flue Hood Location
  • Page 29 – Step 8 — Controls Options —; Table 4 — 48A,E Series Staged Gas Implementation
  • Page 30 – Table 6 — Thermistor Designations
  • Page 31 – Fig. 24 — Supply-Air Thermistor Connections
  • Page 32 – Fig. 25 — Indoor Air Quality Sensor Configuration; LEGEND; Fig. 26 — Field Control Remote Start/Stop; Field Supplied Wiring
  • Page 33 – Step 9 — Make Electrical Connections
  • Page 39 – See Legend and Notes on page 42.
  • Page 43 – Fig. 28 — Field Power Wiring Connections; GND —; Ground; NEC —; National Electrical Code; TB; Terminal Block
  • Page 47 – RED; Fig. 32 — Field Control Thermostat Wiring; NOTE: Sensor part numbers are as follows:; Fig. 33 — Field Control Temperature Sensor
  • Page 48 – Step 10 — Make Outdoor-Air Inlet Adjustments; SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION; Fig. 34 — Space Temperature Averaging Wiring; SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION
  • Page 49 – Fig. 36 — Adding Seal Strip to Top of Hood Sides
  • Page 51 – Attached to Filter Track Assembly
  • Page 52 – Fig. 46 — Differential Enthalpy Control and Sensor
  • Page 53 – RH —; Relative Humidity; Fig. 48 — Psychrometric Chart for Enthalpy Control; CONTROL
  • Page 54 – Step 12 — Install All Accessories —; VAV —; Variable Air Volume; Fig. 51 — Pressure Transducer Locations
  • Page 55 – Fig. 52 — Motormaster III Control Baffle Details; UNIT SIZE; Fig. 53A — Motormaster III Sensor Location
  • Page 57 – Step 13 — Field Modifications; Fig. 54 — Side Return Air Conversion
  • Page 58 – Fig. 55 — Power Exhaust Relocated to Side Return Duct
  • Page 59 – Crankcase Heaters —; Table 11 — Toshiba TOSVERT VFD Set Point; PRESSURE; Factory-Installed Jumpers
  • Page 60 – Table 12 — Carrier Default Program Parameter Values; PARAMETER GROUP
  • Page 62 – Fig. 58 — Toshiba TOSVERT VF-S9 VFD Factory-Installed Jumpers
  • Page 63 – Power Exhaust —; offset; BUILDING PRESSURE
  • Page 64 – Table 17 — DIP Switch Configuration
  • Page 66 – Table 20 — Fan Performance, 48AJ,AK035 — Vertical Discharge Units
  • Page 67 – Table 21 — Fan Performance, 48AJ,AK040,050 — Vertical Discharge Units
  • Page 68 – Table 22 — Fan Performance, 48AJ,AK060 — Vertical Discharge Units
  • Page 70 – Table 24 — Fan Performance, 48AW,AY035 — Horizontal Discharge Units
  • Page 72 – Table 26 — Fan Performance, 48AW,AY060 — Horizontal Discharge Units
  • Page 73 – Table 27 — Fan Performance, 48EJ,EK024,034 — Vertical Discharge Units
  • Page 74 – Table 28 — Fan Performance, 48EJ,EK038,044 — Vertical Discharge Units
  • Page 75 – Table 29 — Fan Performance, 48EJ,EK048 — Vertical Discharge Units
  • Page 76 – Table 30 — Fan Performance, 48EJ,EK054-068 — Vertical Discharge Units
  • Page 83 – Fig. 59 — Heat Interlock Relay Wiring; CB
  • Page 84 – Staged
  • Page 85 – Table 39 — Navigator Display Menu Structure; Fig. 60 — Navigator Display
  • Page 86 – BASE MODULE; Fig. 61 — Space Temperature Reset Wiring
  • Page 87 – Fig. 62 — Field-Supplied Smoke Detector Wiring
  • Page 89 – Fig. 64 — Spark Gap Adjustment
  • Page 91 – Multifak 2; and Adjustment; Fig. 68 — Evaporator Fan Coupling
  • Page 92 – Fig. 69 — Belt Tension Adjustment
  • Page 94 – Main Burners —; For all applications, main burners are; Fig. 76 — Main Burner Removal
  • Page 103 – TROUBLESHOOTING; FPS —; Freeze Protection Switch; HPS —
  • Page 104 – Thermostatic Expansion Valve
  • Page 112 – GEN; HP; itch; LPS; Lo; TXV; The
  • Page 113 – IDM; Integrated Gas Unit Controller
  • Page 114 – Table 44 — IGC Control Board LED Alarms; Diagnostic LEDs —; Table 45 — Control Board LED Alarms
  • Page 115 – Tables 46-48 show the input and output channel designations.; Table 46 — I/O Channel Designations Base Module — CV
  • Page 116 – SERVICE TRAINING; Packaged Service Training; • Unit Familiarization; Classroom Service Training; descriptions and schedules are in our catalog.
  • Page 118 – GENERAL
Loading the manual

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

PC 111

Catalog No. 534-739

Printed in U.S.A.

Form 48A,E-1SI

Pg 1

107 11-01

Replaces: 48E-6SI

Book 1

Tab

1a

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-58

Step 1 — Provide Unit Support

. . . . . . . . . . . . . . . . . . . 1

• ROOF CURB

• ALTERNATE UNIT SUPPORT

Step 2 — Rig and Place Unit

. . . . . . . . . . . . . . . . . . . . . 2

• POSITIONING

• ROOF MOUNT

Step 3 — Field Fabricate Ductwork

. . . . . . . . . . . . . . . 2

Step 4 — Make Unit Duct Connections

. . . . . . . . . . . 2

Step 5 — Install Flue Hood

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

Step 6 — Trap Condensate Drain

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

Step 7 — Install Gas Piping

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

Step 8 — Controls Options

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

• STAGED GAS UNIT APPLICATIONS

• THERMISTORS

• CONSTANT VOLUME APPLICATIONS

• VARIABLE AIR VOLUME (VAV) APPLICATIONS

Step 9 — Make Electrical Connections

. . . . . . . . . . 33

• POWER WIRING

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

Step 10 — Make Outdoor-Air Inlet

Adjustments

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

• ECONOMIZER

• ECONOMIZER SETTINGS

Step 11 — Position Power Exhaust/Barometric

Relief Damper Hood

. . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Step 12 — Install All Accessories

. . . . . . . . . . . . . . . 54

Step 13 — Field Modifications

. . . . . . . . . . . . . . . . . . . 57

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58-89

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89-102

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . 103-115

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . . CL-1,CL-2

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should in-

stall, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance

functions of cleaning coils and filters and replacing filters. All

other operations should be performed by trained service per-

sonnel. When working on air-conditioning equipment, observe

precautions in the literature, tags and labels attached to the unit,

and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have

fire extinguishers available for all brazing operations.

INSTALLATION

Step 1 — Provide Unit Support

Before performing service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

could cause personal injury.

1. Improper installation, adjustment, alteration, service,

or maintenance can cause property damage, personal

injury, or loss of life. Refer to the User’s Information

Manual provided with this unit for more details.

2. Do not store or use gasoline or other flammable va-

pors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a neigh-

bor’s phone. Follow the gas supplier’s instructions.

4. If you cannot reach your gas supplier, call the fire

department.

Disconnect gas piping from unit when pressure testing at

pressure greater than 0.5 psig. Pressures greater than

0.5 psig will cause gas valve damage resulting in hazardous

condition. If gas valve is subjected to pressure greater than

0.5 psig, it

must

be replaced before use. When pressure

testing field-supplied gas piping at pressures of 0.5 psig or

less, a unit connected to such piping must be isolated by

closing the manual gas valve(s).

1. All panels must be in place when rigging.
2. Unit is not designed for handling by fork truck.

48AJ,AK,AW,AY020-060

with Reciprocating Compressor

48EJ,EK,EW,EY024-068

Single Package Rooftop Units

Electric Cooling/Gas Heating

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Summary

Page 2 - attached to the; Instructions continued on page 28.

2 ROOF CURB — For vertical discharge units, assemble or in- stall accessory roof curb in accordance with instructions shipped with this accessory. See Fig. 1-4. Install insulation, cant strips, roofing, and counter flashing as shown. Ductwork can be installed to roof curb before unit is set in place...

Page 19 - Fig. 17 — Rigging Information; UNIT

19 48AJ,AK,AW,AY UNITS Fig. 17 — Rigging Information UNIT CENTER OF GRAVITY PERCENT OF TOTAL WEIGHT AT EACH CORNER (%) Inches Millimeters A B A B 1 2 3 4 48AJ,AKD020 72.4 42.2 1839 1072 21.0% 22.8% 29.2% 26.9% 48AJE020 73.3 42.7 1862 1085 21.6% 22.9% 28.6% 27.0% 48AW,AYD020 72.4 42.2 1839 1072 21.0%...

Page 20 - RIGGING WEIGHTS; hoods. Includes 45 lbs for the economizer hood packaging.

20 48EJ,EK,EW,EY UNITS RIGGING WEIGHTS 48AJ,AK,AW,AY UNITS *Includes outdoor-air hoods, filters, largest available indoor-fan motor, modulating power exhaust, and the largest available variablefrequency drive (VFD). NOTES: 1. Center of gravity. 2. On 020-050 includes 500 lbs and on 060 725 lbs for m...

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