Product Data - Carrier

1 Copyright 2001 Carrier CorporationForm 38A-C5 PDFeatures/BenefitsThese dependable split sys-tems match Carrier s indoor-air handlers with outdoor condensing units for a wide selection of commercial cooling for long lifeModel 38AK ( hermetic compressor units) and 38 AKS (semi- hermetic com-pressor) units are designed and built to last. The copper tube-aluminum fin outdoor coil construction provides years of trouble-free operation. Where conditions require them, copper fin coils are also available. Cabinets are constructed of prepainted galvanized steel, delivering unparalleled protection from the environment. Inside and out-side surfaces are protected to ensure long life, good looks, and reliable oper-ation.

2 Safety controls are used for en-hanced system protection and operationBuilding owners will appreciate the high unit EERs (Energy Efficiency Ra-tios) offered by the 38AK and 38 AKS units. These units provide greater effi-ciency than similar units in the market-place, which translates into year-round operating 40RM007-034 Commercial Air-CooledSplit Systems50 HzNominal: to kW ( to Tons)ProductData38AK007,008,01238 AKS008,009,01238 AKS013-02440RM007-0122 Controls for performance dependabilityThe 38AK and 38 AKS condensing units offer the building owner operat-ing controls and components designed for performance dependability. The highly efficient hermetic and semi- hermetic compressors are engineered for long life and durability.

3 The com-pressors include overload protection and vibration isolation for enhance-ment of quiet operation. The high-pressure switch protects the entire re-frigeration system from abnormally high operating pressures. A low- pressure switch protects the system from low-pressure conditions, includ-ing loss of 38AK007-012 and 38 AKS008-012 units include Cycle-LOC anti-short-cycling protection which helps to protect the units against compressor failure. The 38 AKS013-044 units include a compressor recycle delay timer to prevent short-cycling. The 24-v control circuit transformer permits quick, easy wiring of standard and programmable 24-v 38AK012 and 38 AKS008-044 units include a crankcase heater to eliminate liquid slugging at start-up.

4 Units with semi- hermetic compressors are also equipped with an oil-level sight safety standards for 38AK and 38 AKS units are assured through UL (Underwriters Laboratories) ( standard) and CSA (Canadian Standards Association) Carrier 40RM pack-aged air handlers are custom matched to 38AK and 38 AKS condensing unitsThe 40RM Series has excellent fan performance, efficient direct- expansion (DX) coils, a unique combi-nation of indoor-air quality features, and easy installation. Its versatility and state-of-the-art features help to ensure that your split system provides eco-nomical performance now and in the future. Indoor-air quality (IAQ) fea-tures The unique combination of IAQ features in the 40RM Series air handlers help to ensure that only clean, fresh, conditioned air is deliv-ered to the occupied (DX) cooling coils prevent the build-up of humidity in the room, even during part-load conditions.

5 unit sizes 012 and above feature dual-circuit coils for improved temperature 51-mm (2-in.) disposable filters remove dust and airborne parti-cles from the occupied insulation contains an im-mobilized anti-microbial agent to inhib-it the growth of bacteria and fungi. The anti-microbial agent is registered with the Environmental Protection Agency (EPA).The pitched PVC drain pan can be adjusted for a right- or left-hand connection to suit many applications and provide positive drainage, andprevent standing 40RM accessory economizer can provide ventilation air to improve indoor air quality. When used in con-junction with CO2 sensors, the econo-mizer admits fresh outdoor air to re-place stale, recirculated indoor The 40RM Series pack-aged air handlers have low initial costs, and they continue to save money by providing reduced installation expense and energy-efficient installation is ensured by the multipoise design.

6 Units can be in-stalled in either the horizontal or verti-cal (upflow) configuration without mod-ifications. Fan motors and contactors are prewired and thermostaticexpansion valves (TXVs) are factory-installed on all 40RM efficiency, precision-balanced fans minimize air turbulence, surging, and unbalanced operation, cutting op-eration economizer accessory precisely controls the blend of outdoor air and room air to achieve comfort levels. When the outside air enthalpy is suit-able, outside air dampers can fully open to provide free cooling without energizing mechanical dependability 40RM units are made to last. The die-formed galvanized steel panels ensure structur-al integrity under all operating condi-tions.

7 Galvanized steel fan housings are securely mounted to a die-formed gal-vanized steel fan pillow-block bearings (40RM014-034) are securely fastened to the solid steel fan shaft with splitcollets and clamp locking devices. Smaller unit sizes have spider-type flexibility Model 40RM direct-expansion coils have galvanized steel casings; inlet and outlet connec-tions are on the same end. The coils are designed for use with Refrigerant 22 and have copper tubes mechanically bonded to aluminum sine-wave fins. The coils include matched, factory-installed TXVs with matching distributor installation and service The multipoise design and component layout help you to get the unit installed and running quickly.

8 Units can be con-verted from horizontal to vertical oper-ation by simply repositioning the unit . Drain pan connections are duplicated on both sides of the unit . The filters, motor, drive, TXVs, and coil connec-tions are all easily accessed by remov-ing a single side ..1,2 Model Number Nomenclature 38AK Units .. 3 Model Number Nomenclature 38 AKS Units .. 4 Model Number Nomenclature 40RM Units .. 5 Capacity Summary .. 6 Options and Accessories ..7-10 Physical Data ..11-18 Dimensions ..19-26 Selection Procedure .. 27 Performance Data ..28-74 Typical Piping and Wiring ..75-79 Electrical Data ..80-83 Controls .. 84 Typical Control Wiring.

9 85-87 Application Data 38AK007-012, 38 AKS008-012 .. 88 Application Data 38 AKS013-024 ..89-91 Application Data 38 AKS028-044 ..92,93 Application Data 40RM ..94-98 Guide Specifications 38AK007-012, 38 AKS008-012 ..99,100 Guide Specifications 38 AKS013-024 ..101,102 Guide Specifications 38 AKS028-044 ..103-105 Guide Specifications 40RM..106-108 Model number nomenclature 38AK unitsTable of contents*Gross capacity based on 36 C air temperature entering condenser and 8 C saturated suction temperature. Gross capacity based on 95 F air temperature entering condenser and 45 F saturated suction number nomenclature 38 AKS unitsNominal Capacity kW* (Tons )008 ( )016 ( )009 ( )024 ( )012 ( )028 ( )013 ( )034 ( )014 ( )044 ( )Packaging0 Base Unit3 Export38 AKS 008 9 0 3 38 AKS Commercial Air-CooledCondensing Units (Semi- hermetic )Not UsedCondenser Coil Fin Material Aluminum (Standard)C Copper (Optional)K Pre-Coated Aluminum (Optional, 013-044 Only)V Pre-Coated Aluminum (Optional, 008-012 Only)SO Post-Coated Aluminum (Contact Factory)SO Post-Coated Copper (Contact Factory)

10 Not UsedRevision Number0 OriginalVoltage Designation3 346-3-50**8 230-3-509 400-3-50 LEGENDSO Special Order*Gross capacity based on 36 C air temperature entering condenser and 8 C saturated suction temperature. Gross capacity based on 95 F air temperature entering condenser and 45 F saturated suction temperature.**024-044 UNITS38AK, 38 AKS008-012 UNITS5 Model number nomenclature 40RM units*The YC and WD option codes for all 034 size units designate standard motor and high-static UNITS6 LEGEND*System gross capacities are rated according to indoor unit airflow, 35 C air temperature enteringcondenser, and 20 C wb air temperature entering evaporator.