Carrier Residential Air Conditioners and Heat Pumps Application Manualline

Also see for 24ANB124: Installation instructions

Carrier Residential Air Conditioners and Heat Pumps Application Manualline Manual pdf 3 page image

3SAFETY CONSIDERATIONSInstallation, service, and repair of these units should be attemptedonly by trained service technicians familiar with standard serviceinstruction and training material.All equipment should be installed in accordance with acceptedpractices and unit Installation Instructions, and in compliance withall national and local codes. Power should be turned off whenservicing or repairing electrical components. Extreme cautionshould be observed when troubleshooting electrical componentswith power on. Observe all warning notices posted on equipmentand in instructions or manuals.UNIT OPERATION AND SAFETY HAZARDFailure to follow this warning could result in personalinjury or equipment damage.Puronr (R--410A) systems operate at higher pressures thanstandard R--22 systems. Do not use R--22 service equipmentor components on Puronr equipment. Ensure serviceequipment is rated for Puronr.! WARNINGRefrigeration systems contain refrigerant under pressure. Extremecaution should be observed when handling refrigerants. Wearsafety glasses and gloves to prevent personal injury. During normalsystem operations, some components are hot and can cause burns.Rotating fan blades can cause personal injury. Appropriate safetyconsiderations are posted throughout this manual where potentiallydangerous techniques are addressed.INTRODUCTIONThis document provides required system information necessary toinstall, service, repair or maintain the family air conditioners andheat pumps using R22 or Puron refrigerant.Refer to the unit Product Data for rating information, electricaldata, required clearances, additional component part numbers andrelated pre--sale data. Installation Instructions are also available perspecific models.Information in this document refers to units produced in 2012 andlater. Refer to Service Manual number 24--25--3SM for productsproduced 2006 -- 2012.INSTALLATION GUIDELINEResidential New ConstructionSpecifications for these units in the residential new constructionmarket require the outdoor unit, indoor unit, refrigerant tubing sets,metering device, and filter drier listed in Product Data (PD). DONOT DEVIATE FROM PD. Consult unit Installation Instructionsfor detailed information.Add--On Replacement (Retrofit) -- R22 to PuronSpecifications for these units in the add--on replacement/retrofitmarket require change--out of outdoor unit, metering device, andall capillary tube coils. Change--out of indoor coil is recommended.There can be no deviation.1. If system is being replaced due to compressor electricalfailure, assume acid is in system. If system is being replacedfor any other reason, use approved acid test kit to determineacid level. If even low levels of acid are detected installfactory approved, 100 percent activated aluminasuction--line filter drier in addition to the factory suppliedliquid--line filter drier. Remove the suction line filter drier assoon as possible, with a maximum of 72 hr.2. Drain oil from low points or traps in suction--line andevaporator if they were not replaced.3. Change out indoor coil or verify existing coil is listed in theProduct Data Digest.4. Unless indoor unit is equipped with a Puronr approvedmetering device, change out metering device to factorysupplied or field--accessory device specifically designed forPuronr.5. Replace outdoor unit with Puronr outdoor unit.6. Install factory--supplied liquid--line filter drier.UNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Never install suction--line filter drier in the liquid--line of aPuronr system.CAUTION!7. If suction--line filter drier was installed for system clean up,operate system for 10 hr. Monitor pressure drop across drier.If pressure drop exceeds 3 psig, replace suction--line andliquid--line filter driers. Be sure to purge system with drynitrogen and evacuate when replacing filter driers. Continueto monitor pressure drop across suction--line filter drier.After 10 hr of runtime, remove suction--line filter drier andreplace liquid--line filter drier. Never leave suction--linefilter drier in system longer than 72 hr (actual time).8. Charge system. (See unit information plate.)SeacoastCoastal units are available in selected models and sizes of AirConditioners and Heat Pumps. These units have protection to helpresist the corrosive coastal environment. Features include:S Armor plate fins and epoxy coated coilsS Complete baked--on paint coverage(both sides of external sheet metal and grilles)S Paint coated screwsCoastal environments are considered to be within 2 miles of theocean. Salt water can be carried as far away as 2 miles from thecoast by means of sea spray, mist or fog. Line--of--sight distancefrom the ocean, prevailing wind direction, relative humidity,wet/dry time, and coil temperatures will determine the severity ofcorrosion potential in the coastal environment.