Carrier 38AQS012 Installation, Start-Up And Service Instructions Manual
  1. Manuals
  2. Brands
  3. Carrier Manuals
  4. Heat Pump
  5. 38AQS012
  6. Installation, start-up and service instructions manual

Carrier 38AQS012 Installation, Start-Up And Service Instructions Manual

Hide thumbs Also See for 38AQS012:
Table of Contents

Advertisement

Quick Links

See also: Product Data
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Step 1 - Complete Pre-Installation
Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Step 2 - Rig and Mount Unit. . . . . . . . . . . . . . . . . . . . . 5
Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-18
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18,19
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 20-23
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components and
location of equipment (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions, such as cleaning coils and filters and replacing filters.
All other operations should be performed by trained service
personnel.
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to the
equipment.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Keep a quenching cloth and fire extinguisher handy.
• Use care in handling, rigging, and setting bulky
equipment.
To prevent electric shock, be sure power to equip-
ment is shut off before performing maintenance or
service.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Book 1
4
Tab
5a 5a
Installation, Start-Up and
Service Instructions
Page
Catalog No. 533-80001
Printed in U.S.A.
Split System Heat Pumps
INSTALLATION
IMPORTANT: Follow unit location, height proximity,
and piping requirements in this booklet carefully to
enhance system efficiency and to avoid system failure.
Read entire booklet before starting installation.
Step 1 - Complete Pre-Installation Checks
UNCRATE UNIT - Remove unit packaging except for the
top skid assembly, which should be left in place until after the
unit is rigged into position.
INSPECT SHIPMENT - File claim with shipping company
if shipment is damaged or incomplete.
CONSIDER SYSTEM REQUIREMENTS
• Consult local building and electrical codes for special
installation requirements.
• Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and servicing unit. See Fig. 1 and 2.
• Ensure unit weight will be properly supported. See
Tables 1A and 1B.
• Unit may be mounted on a level pad directly on the base
channels or mounted on raised pads at support points.
See Fig. 3 and Table 2 for weight distribution based on
recommended support points.
NOTE: If vibration isolators are required for a particular
installation, use data in Table 2 to make proper selection.
• Accessory
mounting
38AQ900081) are recommended for elevation of unit for
improved air circulation and better condensate drainage.
Legs also minimize interference from ice build-up,
snow, leaves, and debris. See Fig. 1.
Form 38AQS-9SI
Pg 1
38AQS012-016
50/60 Hz
legs
(Carrier
Part
No.
1-01
Replaces: 38AQS-8SI

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 38AQS012 and is the answer not in the manual?

Questions and answers

Related Manuals for Carrier 38AQS012

Summary of Contents for Carrier 38AQS012

  • Page 1: Table Of Contents

    38AQS012-016 Split System Heat Pumps 50/60 Hz Installation, Start-Up and Service Instructions CONTENTS INSTALLATION Page IMPORTANT: Follow unit location, height proximity, SAFETY CONSIDERATIONS ..... . 1 and piping requirements in this booklet carefully to enhance system efficiency and to avoid system failure.
  • Page 2 Table 1A — Physical Data — English Table 1B — Physical Data — SI UNIT 38AQS UNIT 38AQS OPERATING WEIGHT (lb) OPERATING WEIGHT (kg) REFRIGERANT R-22 R-22 REFRIGERANT R-22 R-22 13.6 16.8 Operating Charge (lb)* Operating Charge (kg)* COMPRESSOR Recip Hermetic; COMPRESSOR Recip Hermetic;...
  • Page 3 NOTES: 1. Service clearances are as follows: Side (compressor) — 3 ft (1067 mm) Side (opposite compressor) — 3 ft (914 mm) Ends — 2 ft (616 mm) Top — 5 ft (1524 mm) 2. See Table 2 and Fig. 3 for weight distribution and center of gravity.

  • Page 4: Component Locations

    Table 2 — Weight Distribution (972 mm) WEIGHT — lb (kg) UNIT Support Point Total 26 11/16" 38AQS (Fig. 3) Operating (678 mm) Weight (340) (67) (103) (103) (67) (364) (72) (110) (111) (72) 38AQS012, 016 Fig. 3 — Weight Distribution...

  • Page 5: Step 3 - Complete Refrigerant Piping

    Step 2 — Rig and Mount Unit If conditions or local codes require unit to be fastened to pad, use the mounting holes in the 4 unit mounting feet (see Fig. 1). MOUNT UNIT — The unit may be mounted on a solid, level Be sure unit panels are securely in place prior to rigging.
  • Page 6 The maximum allowable line length is 100 ft (30.5 M). Select proper liquid and vapor line sizes from Table 4. Refer to the Carrier System Design Manual, Part 3, for design details and proper piping practices. Unit is pressurized with a holding charge of refrigerant.
  • Page 7 NOTES: 1. All piping must follow standard refrigerant piping techniques. NEC — National Electrical Code (U.S.A.) Refer to Carrier System Design Manual for details. — Thermostatic Expansion Valve 2. All wiring must comply with applicable local and national codes. Piping 3.
  • Page 8 LIQUID LINE NOTES: 1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual for details. 2. All wiring must comply with applicable local and national codes. 3. Wiring and piping shown are general points-of-connection guides only and are not intended for, or to include, all details for a specific installation.
  • Page 9 BI-FLOW FILTER DRIER LIQUID LINE LEGEND TXV — Thermostatic Expansion Valve REDUCING TEE INDOOR COIL LIQUID CARRIER UNIT QUANTITY FIGURE LINE PART 38AQS REQUIRED REFERENCE SIZE (in.) P504-8084S P504-8165S P504-8084S P504-8085S Fig. 6 — Recommended Filter Driers and Installation Locations LEGEND TXV —...

  • Page 10: Step 4 - Complete Electrical

    Carrier warranty. ment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code) Per local code requirements, provide an adequate fused dis- (U.S.A.), ANSI/NFPA (American National Standards Insti-...
  • Page 11 Fig. 10A-10C. AIRFLOW SWITCH — Carrier recommends an indoor air- flow switch (field supplied) be installed and interlocked with NOTE: For wire runs up to 50 ft, use no. 18 AWG insulated the outdoor unit.
  • Page 12 EQUIP — Equipment — Ground — Heater Contactor — Indoor Fan Contactor — Indoor Fan Motor — National Electrical Code (U.S.A.) — Terminal Block Fig. 10A — Field Wiring Diagram, 38AQS012 or 016 System With Standard Thermostat and Electric Heat...

  • Page 15: Pre-Start-Up

    (through liquid service valve) on the high Fig. 11 — Field Wiring for Airflow Switch — side. See approximate refrigerant charge in Table 4. Charge ac- 38AQS012,016/40RMQ cording to the values in the Charging Chart, Fig. 12 and 13 on page 16.
  • Page 16 Run compressor for 20 minutes and check oil level. NOTE: Use only Carrier approved compressor oil. Approved sources are: Petroleum Specialties Inc..... Cryol 150A Texaco, Inc..
  • Page 17 10-minute cycle. heat pump OFF cycle, which further protects the compressor DUPLEX 38AQS012 OR 016 OUTDOOR UNITS WITH against flooded starts. 40RMQ024 OR 40RMQ028 — The sequence of operation is OIL CHARGE (Tables 1A and 1B) —...

  • Page 18: Service

    2 rows of compressor information and Fig. 2 for component location. fins (38AQS012) or 3 rows of fins (38AQS016), and restrict Follow safety codes and wear safety glasses and work gloves. condenser airflow. Use a flashlight to determine if dirt or debris 1.
  • Page 19 Cleaner solution to all coil surfaces including finned area, tube sheets, and coil headers. Hold garden sprayer nozzle Fig. 16 — Coil Cleaning (38AQS012 Shown) close to finned areas and apply cleaner with a vertical, up- and-down motion. Avoid spraying in horizontal pattern to minimize potential for fin damage.
  • Page 22 TXV — Thermostatic Expansion Valve NOTES: 1. Check valves are designated “A” through “D.” 2. Illustrations are typical and do not portray exact coil circuiting. 3. Check valve positions: open, closed. Fig. 17 — Typical Heat Pump Heating Operation Schematic (38AQS012 Shown)
  • Page 23 TXV — Thermostatic Expansion Valve NOTES: 1. Check valves are designated “A” through “D.” 2. Illustrations are typical and do not portray exact coil circuiting. 3. Check valve positions: open, closed. Fig. 18 — Typical Heat Pump Cooling Operation Schematic (38AQS012 Shown)
  • Page 26 Copyright 2001 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 PC 111 Catalog No. 533-80001 Printed in U.S.A. Form 38AQS-9SI Pg 26 1-01 Replaces: 38AQS-8SI...

  • Page 27: Start-Up Checklist

    START-UP CHECKLIST I. PRELIMINARY INFORMATION OUTDOOR UNIT: MODEL NO. ___________________________ SERIAL NO.: _______________________________ INDOOR UNIT: MODEL NO. _____________________________ SERIAL NO.: _______________________________ ADDITIONAL ACCESSORIES __________________________________________________________________________ II. PRE-START-UP OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? (Y/N)__________ IF SO, WHERE:_______________________________________________________________________________________ ____________________________________________________________________________________________________ WILL THIS DAMAGE PREVENT UNIT START-UP? (Y/N) __________ CHECK POWER SUPPLY.
  • Page 28 ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ Copyright 2001 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book PC 111 Catalog No. 533-80001 Printed in U.S.A. Form 38AQS-9SI...

This manual is also suitable for:

38aqs016

Table of Contents