Carrier 38HDR Installation Instructions Manual

Also see for 38HDR: Owner's information manual Installation instructions Product data

Contents

4RiggingPERSONAL INJURY AND/OR EQUIPMENTDAMAGE HAZARDFailure to follow this caution may result in personal injuryand/or equipment damage.Be sure unit panels are securely in place prior to rigging.CAUTION!Keep the unit upright and lift unit using a sling. Use cardboard orpadding under the sling, and spreader bars to prevent sling damageto the unit. See Fig. 3. See Fig. 2 for center of gravity reference.Install the unit so that the coil does not face into prevailing winds.If this is not possible and constant winds above 25 mph areexpected, use accessory wind baffle. See installation instructionsprovided with the accessory kit.NOTE: Accessory wind baffles should be used on all units withaccessory low ambient temperature control.Field--fabricated snow or ice stands may be used to raise unit whenoperation will be required during winter months. Units may also bewall mounted using the accessory wall mounting kit.A07396Fig. 3 --- Lifting Unit with SlingStep 3 —COMPLETE REFRIGERANT PIPING CONNEC-TIONSOutdoor units may be connected to indoor units usingfield--supplied tubing of refrigerant grade and condition. See Table1 for correct line sizes. Do not use less than 10 ft (3.05 m) ofinterconnecting tubing.CAUTION!UNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.If any section of pipe is buried, there must be a 6 in. (152.4mm) vertical rise to the valve connections on the outdoorunit. If more than the recommended length is buried,refrigerant may migrate to cooler, buried section duringextended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start--up.When more than 80 ft (24.38 m) of interconnecting tubing andmore than 20 ft (6.10 m) of vertical lift is used, consult theresidential Long Line Application Guide for required accessories.If either refrigerant tubing or indoor coil is exposed to theatmosphere, the system must be evacuated following goodrefrigeration practices.Run refrigerant tubes as directly as possible, avoiding unnecessaryturns and bends. Suspend refrigerant tubes so they do not damageinsulation on vapor tube and do not transmit vibration to structure.Also, when passing refrigerant tubes through a wall, seal theopening so that vibration is not transmitted to structure. Leavesome slack in refrigerant tubes between structure and outdoor unitto absorb vibration. Refer to separate indoor unit installationinstructions for additional information.Expansion DeviceA hard shutoff, thermostatic expansion valve (TXV) is required atthe indoor section of the system for proper operation of theseproducts. If the indoor section of the system is not equipped with ahard shutoff TXV, refer to Spec Sheet for the correct TXV kit to beinstalled. Follow the instructions in the kit for proper installation.38HDR