TECHNICAL SUPPORT MANUAL Split System Air …

1 421 04 5902 00 Aug 2010 TECHNICAL SUPPORT MANUALS plit System Air ConditionerR2AM, R2A3, WCA3**2 DANGER, WARNING, CAUTION, andNOTEThe signal words DANGER, WARNING, CAU-TION, and NOTE are used to identify levels of haz-ard seriousness. The signal word DANGER is onlyused on product labels to signify an immediate haz-ard. The signal words WARNING, CAUTION, andNOTE will be used on product labels and through-out this MANUAL and other manuals that may applyto the Immediate hazards which will result insevere personal injury or Hazards or unsafe practices whichcould result in severe personal injury or Hazards or unsafe practices whichmay result in minor personal injury or product orproperty Used to highlight suggestions which willresult in enhanced installation, reliability, or Words in ManualsThe signal word WARNING is used throughout thismanual in the following manner:The signal word CAUTION is used throughout thismanual in the following manner:Signal Words on Product LabelingSignal words are used in combination with colorsand/or pictures on product Labeling and Signal Words!

2 !CAUTIONWARNINGTABLE OF CONTENTSM odel Number Identification2 Diagram4 Labels (Expanded Data)7 Parts Cooling Multiplying Cooling Multiplying Factors15 **2 Cooling Multiplying Parts List22 Parts List25 **2 Parts List27 !WARNINGDEATH, PERSONAL INJURY, AND/OR PROPERTYDAMAGE HAZARDF ailure to carefully read and follow this warningcould result in equipment malfunction, propertydamage, personal injury and/or or repairs made by unqualified per-sons could result in equipment malfunction, prop-erty damage, personal injury and/or information contained in this MANUAL is in-tended for use by a qualified service technician fa-miliar with safety procedures and equipped withthe proper tools and test must conform with local buildingcodes and with the National Electrical CodeNFPA70 current edition or Canadian ElectricalCode Part 1 CSA SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**22421 04 5902 00 OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single phase)Digit Position.

3 12345, 6789101112 Example Part Number:R2A318 AKC100 Product Family2 = R 224 = R 410 AREFRIGERANTA = Air ConditionerH = Heat PumpTYPEM = NOM (13 SEER)3 = 13 SEER4 = 14 SEERNOMINAL EFFICIENCY18 = 18,000 BTUH = 1 tons24 = 24,000 BTUH = 2 tons30 = 30,000 BTUH = 2 tons36 = 36,000 BTUH = 3 tons42 = 42,000 BTUH = 3 tons48 = 48,000 BTUH = 4 tons60 = 60,000 BTUH = 5 tonsNOMINAL CAPACITYA = Standard GrilleG = Coil Guard GrilleFEATURESK = 208/230 1 60 VOLTAGES ales CodeEngineering RevisionExtra DigitExtra DigitTECHNICAL SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**2421 04 5902 003 OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single phase)Digit Position:1,2345,67891011 Example Part Number:WCA3242 GKA1WC = Condensing UnitA = Air ConditionerH = Heat PumpTYPE3 = 13 SEER4 = 14 SEERSEER18 = 18,000 BTUH = 1 tons24 = 24,000 BTUH = 2 tons30 = 30,000 BTUH = 2 tons36 = 36,000 BTUH = 3 tons42 = 42,000 BTUH = 3 tons48 = 48,000 BTUH = 4 tons60 = 60,000 BTUH = 5 tonsNOMINAL CAPACITY2 = R 224 = R 410 AREFRIGERANTA = Standard GrilleG = Coil Guard GrilleFEATUREK = 208/230 1 60 VOLTAGES ales CodeExtra DigitACCESSORIES PART NUMBER IDENTIFICATION GUIDED igit Position:123456, 78, 910, 11 Example Part Number:NASA00 101C HN = Non BrandedBRANDINGA = AccessoryPRODUCT GROUPS = Split System (AC & HP)KIT USAGEA = OriginalB = 2nd GenerationMAJOR SERIES0 = Generic or Not Applicable2 = R 224 = R 410 AREFRIGERANTP roduct Identifier NumberPackage QuantityType of Kit(Example: CH = Crankcase Heater) TECHNICAL SUPPORT MANUALS plit System Air Conditioner.

4 R2AM, R2A3, WCA3**24421 04 5902 00 All 1 Sizes: 18, 24, 30, 36, 42, 48, 601. Symbols are electrical representation Compressor and fan motor furnished with inherent thermal To be wired in accordance with National Electric and local class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed with Use copper conductors only. Use conductors suitable for at least 75 C (167 F).6. Connection for typical cooling only thermostat. For other arrangements see installation If indoor section has a transformer with a grounded secondary, connect the grounded side to the BRN/YEL When start capacitor and relay are installed, start thermistor (PTC) is not CH not used on all If any of the original wire, as supplied, must be replaced, use the same or equivalent Check all electrical connections inside control box for Do not attempt to operate unit until service valves have been Do not rapid cycle compressor.

5 Compressor must be off 3 minutes to allow pressures to equalize between high and low side before Wire not present if HPS, LPS or CTD are SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**2421 04 5902 005335781 101 Rev. BR2AM 3 Sizes: 36, 48, 601. Symbols are electrical representation Compressor and fan motor furnished with inherent thermal To be wired in accordance with National Electric and local class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed with Use copper conductors only. Use conductors suitable for at least 75 C (167 F).6. Connection for typical cooling only thermostat. For other arrangements see installation If indoor section has a transformer with a grounded secondary, connect the grounded side to the BRN/YEL When start capacitor and relay are installed, start thermistor (PTC) is not CH not used on all If any of the original wire, as supplied, must be replaced, use the same or equivalent Check all electrical connections inside control box for Do not attempt to operate unit until service valves have been Do not rapid cycle compressor.

6 Compressor must be off 3 minutes to allow pressures to equalize between high and low side before Wire not present if HPS, LPS or CTD are SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**26421 04 5902 00R 22 CHARGING CHARTSFind the required Subcooling Temperature on the unit Rating Plate. Use the closest column on the chart below(5, 10, 15, or 20) .SAdd or remove refrigerant until both the Liquid Line Temperature and Liquid Pressure agree with chart Liquid Pressure (psig)Rating Plate (required) Subcooling Temperature ( F)5101520R 22 Required Liquid Line Temperature ( F)16383787368171868176711798984797418792 8782771969590858020598938883214101969186 2231049994892331071029792243110105100952 5311310810398264116111106101274119114109 1042851221171121072971251201151103091281 23118113 TECHNICAL SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**2421 04 5902 007 CFM5762677257626772576267725762677257626 772 MBh * PR16416516716919219219519822322322622925 7257260264295295298302LO PR73758291757784927778859379808695818188 96 MBh * PR16516616817019319319619922422422723025 9259261265297297299303LO PR77788493797986948181879583838897858589 98 MBh * PR16616616817119419419619922522522723126 0260262266298298300304LO PR80808695828287968484899786869098878791 99511501 Entering Indoor Temperature Degrees F, Wet Bulb525600675 COOLING018 Size Outdoor With EB2X24** / W*A*242AA* Indoor CoolingOutdoor Ambient Temperature Degrees F.

7 Dry Bulb595857 Total capacities are net ( blower heat subtracted) System capacities based on 25 line set. If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur. At TVA rating indoor condition (75 F db, 63 F wb), all other indoor air temperatures are at 80 F db If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.^ System amps are total of indoor and outdoor amps. Chart data is for 80 F indoor dry bulb. For indoor db temperatures other than 80 F, measure Indoor db and Indoor CFM, and plug these into the formula below. Measure outdoor db and indoor wet bulb, apply these to the chart above, find MBh and S/T, and plug these into the formula below. (Note: if indoor db is the only thing changing, total capacity, MBh, stays the same.)

8 Sensible Capacity at Indoor db LOWER than 80 F = ( MBh x S/T ) ( 80 Indoor db ) x 835 x Indoor CFM1000()Sensible Capacity at Indoor db HIGHER than 80 F = ( MBh x S/T ) +( Indoor db 80 ) x 835 x Indoor CFM1000() TECHNICAL SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**28421 04 5902 00 CFM5762677257626772576267725762677257626 772 MBh * PR16816817117319719820120423023023323726 4265268272302302306310LO PR74758291757683927777849379798694818187 96 MBh * PR16916917117419919920120523123123423726 6266269273304304307311LO PR77788493797985948080869582828896848489 97 MBh * PR17017017217520020020220523323323423826 8268270274306306308312LO PR81818695828287968484889785858998878790 99511501 Entering Indoor Temperature Degrees F.

9 Wet Bulb700800900 COOLING024 Size Outdoor With EB*2X24B** / W*A*242AA* Indoor CoolingOutdoor Ambient Temperature Degrees F, Dry Bulb595857 Total capacities are net ( blower heat subtracted) System capacities based on 25 line set. If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur. At TVA rating indoor condition (75 F db, 63 F wb), all other indoor air temperatures are at 80 F db If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.^ System amps are total of indoor and outdoor amps. Chart data is for 80 F indoor dry bulb. For indoor db temperatures other than 80 F, measure Indoor db and Indoor CFM, and plug these into the formula below. Measure outdoor db and indoor wet bulb, apply these to the chart above, find MBh and S/T, and plug these into the formula below.

10 (Note: if indoor db is the only thing changing, total capacity, MBh, stays the same.)Sensible Capacity at Indoor db LOWER than 80 F = ( MBh x S/T ) ( 80 Indoor db ) x 835 x Indoor CFM1000()Sensible Capacity at Indoor db HIGHER than 80 F = ( MBh x S/T ) +( Indoor db 80 ) x 835 x Indoor CFM1000() TECHNICAL SUPPORT MANUALS plit System Air Conditioner: R2AM, R2A3, WCA3**2421 04 5902 009 CFM5762677257626772576267725762677257626 772 MBh * PR17617718018420620621021423823824224727 3273277283312312316322LO PR73758290757683917777849379798594818187 95 MBh * PR17817818118520720721121524024024324827 5275278284314314317323LO PR77778492797985938080869482828796848488 97 MBh * PR18018018218621021021221624224224424927 8278280285317317318324LO PR81818694838387958484889686868997888890 9810001175 COOLING030 Size Outdoor