Carrier 38AKS028-044 - Manual
Carrier 38AKS028-044 – 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.
Table of Contents:
- Page 3 – Fig. 2 — Rigging with Spreader Bars
- Page 4 – Fig. 3 — Compressor Mounting; TXV — Thermostatic Expansion Valve; Filter Drier(s) and Sight Glass Locations
- Page 5 – Table 2A — Refrigerant Piping Sizes — 60 Hz; Table 2B — Refrigerant Piping Sizes — 50 Hz; SINGLE SUCTION RISERS; MAXIMUM LIQUID LIFT
- Page 6 – Power Supply —; Electrical characteristics of available; Power Wiring —; All power wiring must comply with; Terminals for field power supply are suitable for copper,; Table 3 — Electrical Data
- Page 8 – — Variable Air Volume; UNIT
- Page 18 – COMPRESSOR END AND RIGHT-SIDE VIEW; COMPRESSOR END, CONTROL PANEL REMOVED; Fig. 13 — 38AKS Unit with Access Panels Removed
- Page 19 – Compressors are factory charged with oil; COMPRESSOR; When additional oil or a complete charge is required, use; Liquid Shutoff/Charging Valve —; Valve is located; Capacity Control —; Capacity control is by 2 suction; Fig. 14 — Location of Prop on Motor Shaft from
- Page 20 – The OPS in; Compressor Protection; Bypass relay timer bypasses; Head Pressure Control —; Control maintains ad-; Table 5 — Minimum Outdoor-Air; The ATS is located in the lower divider panel between the; Table 6 — Fan Cycling Controls
- Page 21 – TROUBLESHOOTING
- Page 22 – PACKAGED SERVICE TRAINING
- Page 23 – A. Preliminary Information; OUTDOOR UNIT
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . 1
BEFORE INSTALLATION
. . . . . . . . . . . . . . . . . . . . . 1-3
Rigging
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Placing Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mounting Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Compressor Mounting
. . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Refrigerant Piping Connections
. . . . . . . . . . . . . . . 3
Liquid Line Solenoid Drop Control
. . . . . . . . . . . . 3
Filter Drier and Moisture Indicator
. . . . . . . . . . . . 3
Receiver
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Piping Procedure
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power Supply
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Wiring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-17
Initial Check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Leak Test and Dehydration
. . . . . . . . . . . . . . . . . . 13
Preliminary Charge
. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Start Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Charge System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Control Module (CM)
. . . . . . . . . . . . . . . . . . . . . . . . 13
Bypass Relay (BPR)
. . . . . . . . . . . . . . . . . . . . . . . . . 17
Time-Delay Relay (TDR)
. . . . . . . . . . . . . . . . . . . . . 17
Sequence of Operation
. . . . . . . . . . . . . . . . . . . . . . 17
Complete Unit Stoppage
. . . . . . . . . . . . . . . . . . . . . 17
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-20
Access for Servicing
. . . . . . . . . . . . . . . . . . . . . . . . 17
Fan Adjustment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Oil Charge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Liquid Shutoff/Charging Valve
. . . . . . . . . . . . . . . 19
Capacity Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Oil Pressure Safety Switch (OPS)
. . . . . . . . . . . . 20
Compressor Protection
. . . . . . . . . . . . . . . . . . . . . . 20
High-Pressure Switch
. . . . . . . . . . . . . . . . . . . . . . . 20
Low-Pressure Switch
. . . . . . . . . . . . . . . . . . . . . . . . 20
Winter Start Control
. . . . . . . . . . . . . . . . . . . . . . . . . 20
Head Pressure Control
. . . . . . . . . . . . . . . . . . . . . . 20
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . 21
START-UP CHECKLIST
. . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated struc-
tures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment (Fig. 1).
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. 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, quenching cloth and fire extinguisher nearby when
brazing.
• Use care in handling, rigging, and setting bulky
equipment.
• See Table 1A or 1B for physical data.
ELECTRIC SHOCK HAZARD
Open all remote disconnects before
servicing this equipment.
BEFORE INSTALLATION
Rigging —
Preferred method is with spreader bars from
above the unit. Use 2-in. (50 mm) OD pipe or hooks in lift-
ing holes. Rig with 4 cables and spreader bars. All panels
must be in place when rigging. See rigging label on unit for
details concerning shipping weights, distance between lift-
ing holes, center of gravity, and spreader bar dimensions.
See Fig. 2.
If overhead rigging is not possible, place unit on skid or
pad for rolling or dragging. When rolling, use minimum of
3 rollers. When dragging, pull the pad. Do not apply force
to the unit. When in final position, raise from above to lift
unit off pad.
All panels must be in place when rigging.
38AKS028-044
Air-Cooled Condensing Units
50/60 Hz
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
Tab
3a
PC 111
Catalog No. 533-820
Printed in U.S.A.
Form 38A-5SI
Pg 1
7-94
Replaces: 38AK-3SI
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Summary
Placing Unit — There must be 4 ft (1220 mm) for ser- vice on all sides of unit, and a minimum of 8 ft (2440 mm)clear air space above unit. For multiple units, allow 8 ft(2440 mm) separation between units for airflow and service. Mounting Unit — When unit is in proper location, use of mounting holes ...
Receiver — No receiver is provided with the unit; it is recommended that one not be used. Piping Procedure — Do not remove run-around pipe from suction and liquid line stubs until piping connectionsare ready to be made. Pass nitrogen or other inert gas throughpiping while brazing, to prevent formati...
Table 2A — Refrigerant Piping Sizes — 60 Hz SINGLE SUCTION RISERS UNIT 38AKS LENGTH OF INTERCONNECTING PIPING, FT (M) 16-25 (4.9-7.6) 26-50 (7.9-15.2) 51-75 (15.5-22.8) 76-100 (23.2-30.5) 101-200 (30.8-60.9) L S L S L S L S L S 028 7 ⁄ 8 1 5 ⁄ 8 7 ⁄ 8 2 1 ⁄ 8 * 7 ⁄ 8 2 1 ⁄ 8 * 7 ⁄ 8 2 1 ⁄ 8 * 7 ⁄ 8 ...
