Carrier instruction manual General, ÐModel 50JS/JX, Safety Considerations

50JS,JX018-060 Single-Package Heat Pump Units

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Installation, Start-Up and Service Instructions

NOTE: Read the entire instruction manual before starting the installation.

Index
SAFETY CONSIDERATIONS	1-4
General	4
RECEIVING AND INSTALLATION	4-15
Check Equipment	4-5
Identify Unit	4
Inspect Shipment	5
Provide Unit Support	5
Roof Curb	5
Slab Mount	5
Ground Mount	5
Provide Clearances	5
Rig and Place Unit	5-6
Select and Install Ductwork	6-8
Converting Horizontal Discharge Units to Downflow (Vertical)
Discharge	6
Provide for Condensate Disposal	6-8
Install Electrical Connections	8
High-Voltage Connections	8
Routing Power Leads Into Unit	8-14
Connecting Ground Lead to Ground Lug	14
Special Procedures for 208-V Operation	15
PRE-START-UP	15
START-UP	15-20
Check for Refrigerant Leaks	15
Unit Start-Up Adjustment	15-20
MAINTENANCE	20-23
SYSTEM INFORMATION	23
Time Delay Relay	23
Pressure Switches	23
Defrost Thermostat	23
TROUBLESHOOTING	24-25
START-UP CHECKLIST	25

NOTE TO INSTALLER Ð READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY before installing this unit. Also, make sure the Owner's Manual and Service Instructions are left with the unit after installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters. All other operations should be performed by trained service personnel. 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 extinguisher available for all brazing operations.

C99001

Fig. 1ÐModel 50JS/JX

Improper installation, adjustment, alteration, service, mainte- nance, or use can cause explosion, fire, electric shock, or other occurrences, which could cause serious injury or death or damage your property. Consult a qualified installer or service agency for information or assistance. The qualified installer or agency must use only factory-authorized kits or accessories when modifying this product.

Recognize safety information. This is the safety-alert symbol . When you see this symbol on the product or in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words Ð DANGER, WARNING, CAU- TION, and NOTE. Danger identifies the most serious hazards, which will result in severe personal injury or death. Warning indicates a condition that could cause serious personal injury or death. Caution is used to identify unsafe practices, which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability or operation.

1.The power supply (volts, phase, and hertz) must correspond to that specified on unit rating plate.

2.The electrical supply provided by the utility must be sufficient to handle load imposed by this unit.

3.This installation must conform with local building codes and with NEC (National Electrical Code). Refer to provincial and local plumbing or waste water codes and other applicable local codes.

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

Book	1	4	PC 101	Catalog No. 565-057	Printed in U.S.A.	Form 50JS,JX-1SI	Pg 1	5-00	Replaces: 50JX-2SI
Tab	5a	5a