Carrier 38BR Installation And Start-up Instructions Manual

Carrier 38BR Installation And Start-up Instructions Manual Manual pdf 1 page image

38BRSplit-System Air ConditionerInstallation and Start-Up InstructionsNOTE: Read the entire instruction manual before starting theinstallation. Refer to Split-System Air Conditioning Installationand Start-Up Instructions (included in this packet).SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service, maintenance,or use can cause explosion, fire, electrical shock, or otherconditions which may cause personal injury or property damage.Consult a qualified installer, service agency, or your distributor orbranch for information or assistance. The qualified installer oragency must use factory-authorized kits or accessories whenmodifying this product. Refer to the individual instructions pack-aged with the kits or accessories when installing.Follow all safety codes. Wear safety glasses and work gloves. Usequenching cloth for brazing operations. Have fire extinguisheravailable. Read these instructions thoroughly and follow allwarnings or cautions attached to the unit. Consult local buildingcodes and National Electrical Code (NEC) for special require-ments.Recognize safety information. This is the safety-alert symbol .When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury.Understand the signal words DANGER, WARNING, and CAU-TION. These words are used with the safety-alert symbol. DAN-GER identifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies hazards whichcould result in personal injury or death. CAUTION is used toidentify unsafe practices which would result in minor personalinjury or product and property damage.Before installing or servicing system, always turn off mainpower to system. There may be more than 1 disconnectswitch. Turn off accessory heater power if applicable. Elec-trical shock can cause personal injury or death.INSTALLATIONStep 1—Mounting PadRefer to Table 1 for mounting pad dimensions.Step 2—Refrigerant TubingRefer to Table 2 for proper refrigerant tube diameters.Step 3—Install Solenoid Valve In Liquid Tube (If Re-quired)Not all applications require use of a liquid line solenoid valve.If your unit has been shipped with a liquid line solenoid valvein the unit, it must be installed for performance enhancement.The liquid line solenoid valve must be energized duringevacuation for complete removal of refrigerant.Before making liquid tube connections, install factory-suppliedsolenoid valve on indoor liquid fitting. (See Fig. 2.) Be sure to useflare adapter supplied with the indoor coil when making connec-tions.Fig. 1—Unit ConnectionsA93578LIQUID LINE CONNFIELD CONTROLSUPPLY CONN7⁄8″ DIA HOLEFIELD POWERSUPPLY CONN7⁄8″ DIA HOLE WITH1 1 ⁄8″ DIA KNOCKOUTAND 1 3 ⁄8″ DIAKNOCKOUTAIR DISCHARGESUCTION LINE CONNTable 1—Mounting Pad DimensionsUNIT SIZE MINIMUM DIMENSIONS (IN.)024-060 30 X 30Note: Mounting pad may differ by series.Table 2—Refrigerant Connections and Recom-mended Liquid and Vapor Tube Diameters (In.)UNITSIZELIQUID VAPORConnectionDiameterTubeDiameterConnectionDiameterTubeDiameter024 3/8 3/8 5/8 5/8030, 036 3/8 3/8 3/4 3/4042, 048 3/8 3/8 7/8 7/8060 3/8 3/8 7/8 1-1/8Note: Tube diameters are for lengths up to 50 ft. For tubing lengths greaterthan 50 ft, consult your local distributor or the Long-Line Application Guideline.Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 3a 2a PC 101 Catalog No. 533-838 Printed in U.S.A. Form 38BR-3SI Pg 1 5-94 Replaces: 38BR-2SI

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