Download Carrier 38ETG Instruction manual
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38EZG, 38ETG, 38ESG 12, 13, 14 SEER SpMit-System Air Conditioner with Puron® HEATUNG & COOUNG %isitx__ _.carrier.com Installation and Start-Up instructions NOTE: Read the entire instruction manual be%re starting the installation This symbol --> indicates a change since the last issue, SAFETY Improper or installation, use can distlibutor installer when modit}-ing for information codes. gloves. Have extinguisher Electrical manuals, see which signal The qualified instructions glasses, protective cloth t\_r brazing Read these clothing, operations. instructions thor= included in literature codes and National on the unit and for personal words; symbol could to identify inju V or result or unsafe practices WARNING, inju V or prodnct suggestions and property which signifies inju V or death. CAUTION would damage. will result result NOTE in enhanced Run refrigerant unnecessary WARNING which 3 injury. DANGER, death. in personal Fig. 1--Models and 4. Leave is used tubes mrns some slack 5. When passing with RTV 6. Avoid between refiigerant as possible structure and robes through or other pliable direct robing joists, is used to highlight by avoiding unit to absorb caulk. with water (See Fig. 2.) pipes, duct work, floor and walls. refrigerant tubing rigid wire or strap which or operation. the wall, seal opening silicon=based contact wall studs, floors, 7. Do not suspend reliability, as directly and bends vibration. hazards in minor personal installation, 38EZG, 38ETG, 38ESG z_. in instructions These words are used with the safety=alert symbol. identifies the most serious hazards which will result in personal A98525 requirements. This is the safety-alert this symbol these CAUTION. DANGER other installing. local building be alert to the potential Understand when or cautions tbr special sa_kty information. you severe available. all warnings (?ode (NEC) or kits or accessories to the individual safety quenching to the unit. Consuh Recognize When Refkr Wear Use and i\fllow and attached or assistance. the kits or accessories all safety maintenance, shock, must use thctory=authorized and work fire service, electrical death, personal injury, or property installer, service agency, or your this product. with oughly fire, may cause a qualified or branch packaged alteration, explosion, or agency Follow adjustment, cause conditions which damage. Consult CONSIDERATIONS comes fi'om joists in direct and studs with a contact with tubing. (See Fig. 2.) 8 Be[bre installing, trical disconnect may be more switch with modi_}'ing, or servicing switch be in the OFF than a suitable cause personal must 1 disconnect injury warning system, switch. tahet. main position. Lock Electrical elec= There that rounds vapor 9. When out and tag shock Ensure can Puron<g, systems operate at higher pressures than standard R=22 systems, Do not use R-22 serxice equipment or corn= ponents on Puron<g equipment, mNSTALLATION NOTE: In some gas pulsations 1. Locate unit in the living area has been traced installation unit away from windows, operation 2. Ensure cases noise sound to of equipment patios, decks, etc. where unit that vapor and liquid robe diameters are appropriate for indoor unit same reserves PC 101 the right Catalog to discontinue, No 533-80079 or change or factor)' refiigerant on control instruction box cover IMPORTANT: distributor or designs Form 38ESG-1SI are 1 in. wide by using charge when metal sleeves by For proper charging in the Check liquid-line indoor with 15 ff of unit opera- information Charge size unit, fbr operation connected robing. using including located section is 3/8-in. O.D. of this for all long line. install the _hctory-supplied the filter drier, part number. and (See Fig. 2.) to li_ctow-approved size and/or Always which refrigerant accessory Maximum If replacing for appropriate sur- of insulation. charge applications IMPORTANT: at any time, specifications Printed in U.S.A. the tion, check your stlaps unit is connected of and completely insulation. front insulation to shape system ter drier. capacity. Manufacturer straps unit contains residential may distt_rb customer. of robing outdoor field-supplied RECOMNENDAT_ONS fi'om improper hanger bent to confbrm outdoor is pliable use hanger to shape 10. Isolate When insulation mbe. necessary, confbrm or death. robing Obtain liquid-line refer to Product replacement fil- Data Digest filter driers from or branch. without notice and without Pg 1 incurring 1%02 obligations. Replaces: New NOTE: Avoid contact between tubing and structure iNDOOR 1 WALL diD TUBE C 1 INSULATION THROUGH THE WALL .-_ JOIST I I 3/8"D (953) TIEDOWN KNOCKOUTS B SUSPENSION (2) PLACES .I A01383 A94199 Fig. 2--Connecting Tubing InstNtation DUMENSIONS (N.) INSTALLATION Specifications require can %r t!_is unit in residential the metering outdoor device, be no Service unit, indoor new construction unit, refi'igerant and filter drier listed in prosaic deviation. Manual Consult the Heat Pumps using changes fbr specific market tubing Application C 22-112 X 22-112 3-11/16 18-1/8 14-3/8 30 X 30 6-1/2 2%1/2 20 and and PuronR; Refl'igerant to obtain required applications and for R-22 retrofit. unit Fig. 3--Mounting be maintained Position 1--Check L NPA(K Equipment and Job Site Step UNIT Remove carton taking care not to damage INSPECT EQUIPMENT File claim with shipping company or incomplete prior Locate to installation unit rating panel It contains information (hock rating to be sure unit matches plate needed plate if shipment 4_Operating install a distance of or ice from roof and the maxin-mm 125°F. Step g--Cheek hstaH Piston opeIating outdoor Indoor Ring 2--Bnstall On or local codes down should bolts provided Level a Solid, If conditions be require used Mounting and fastened 1. (hock Pad indoor in unit base pan. Refer to unit mounting to detem_ine base pan size and knockout On rooftop applications, unit above a load-bearing structure. Arrange and nainimize mount AccuRater® {38EZG supporting members transmission coil piston governing rooftop Roof mounted units exposed wind banes. (onsult Pumps using NOTE: Puron® Unit compressor must to winds SplitoSystem be level manufacturer above in Fig for wind 3 2. After correct piston Place unit local NOTE: piston in piston as shown stays seated set ti'om 5 mph may require and battle Service and Heat with ÷ 2° (÷ 3/8 piston outdoor Install inJft) Step When installing, allow per The TXV Requirements wiring, refiigerant piping, service end of unit and 48 in above unit designed and service for Allow airflow 30=in on 1 side of unit and 12 in or* all remaining clearance sides proceed as to a 6oin must the required with is correct Teflon ring is used outdoor fbr any piston behind ring metering that piston conditions. wit}* a Puron accessoLw (38ETG and 3gESG reciprocating hard start kit (capacitor accessoQ" and hard start kit see be replaced fbr PuronRL units and 38ESG MLST Required) be installed with a TXV. expansion with Puron®. tion Inshqactions clearance, For proper airflow, InstNlation All 38ETG thern_ostatic operate space is Data Digest. 6--TXV NOTE: shipped unit locate piston all operating an appropriate the Product TXV must 3--Clearance device, in Fig. 4. The piston ring ensures If a Puron compressor, with is installed, bag. during hard shut off PuronR: construction. specifications. Step clearance coil piston indoor shipped support Air Conditioners to within sufficient indoor coil combination. Consult Guideline is 55°F, mode and if it matches relay) must be used. For the appropriate Application Refrigerant metering to see approved applications. the Residential to building. fall unit rating plate. If it does not match, knockouts or f?ame. to adequately of vibration mode in cooling Piston with a piston shipped hole location. or* level platfbrm units. cannot Standard) unit. The piston pattern between in cooling ambient to pad, tie wall and isolate unit and tubing codes Manual replace through in or eaves unit job specifications. the unit be attached ambient operating piston shown on outdoor Step 24 Ambients outdoor If'unit is to be installed follows: on unit corner to properly snow, Unit to Pad on unit The mininlum Move to final location unit, is damaged Maintain so water, directly Step LOCATIONS B There Guideline Split-System KNOCKOUT A sets, literature. Air Conditioners Residential TIEDOWN UNIT BASE PAN DIMENSIONS valve is specifically De not use an R-22 TXV. with a factory-approved To replace packaged an Ro22 TXV, with accessow- designed An existing to Ro22 TXV specifically re*_r to Installa- kit. NOTE: FK4 and F(4 tim coils are equipped with an Ro22 TXV. If an FK4 or an FC4 fire coil is used with a Puron® air conditioner, the Ro22 TXV must be replaced with a Puront_ TXV. _-COPPERTUBE HEX BODY A01164 Fig. 4_AccuRater® Components {38EZG Use) 6. Remove bulb flora vapor robe inside cabinet. Remove with indoor a TXV metering INPORTANT: indoor coil piston if unit is to be installed The device. TXV coil as possible mounting 7 Braze equalizer stub-robe closed. Use protective necessary to prevent damage to drain pan. on system should be mounted and in a vertical, the inlet tube vertically as upright down. Valve close to the position. Avoid is more susceptible to malfunction due to debris if inlet tube is fScing down. A factoQ" approved filter-&ier must be installed in the liquid line. INSTALLING TXV IN PLACE 1. Pump system down OF PISTON to 2 psig and recover 2. Remove coils. hex nut from piston body. 3. Remove and discard piston. wrench on fhn Be sure Teflon hex nut. Finger NOTE: If the piston function properly. tighten is not removed : nut plus 8. Install TXV with 3/8oin. copper tubing through small hole in service panel. Use wrench and backup wrench, to avoid damage to tubing or valve, to attach TXV to distributor. 1/2 turn. flora the bo@, TXV will not H 0 To prevent damage to the unit, use a brazing shield TXV with wet cloth or use heat sink material 10. Attach TXV bulb to vapor robe inside cabinet, in same location as original was when removed, using supplied bulb clamps (nylon or copper). See Fig. 5 for con'ect positioning of sensing bulb. 11 Route equalizer robe through suction connection opening (large hole) in fitting panel and install fitting panel in place seal is in place. 4. Reinstall ff_PORTANT: Route the equalizer tube of Puron¢<; TXV through suction line connection opening in fitting panel prior to replacing fitting panel around tubing. 9. Reinstall TXV support clamp (removed in item 3). refi'igerant. Use backup _Sctoryoinstalled bmTier as J and wrap 5. Install TXV on indoor coil liquid line. Sweat swivel adapter to inlet of indoor coil and attach to TXV outlet Use backup wrench to avoid damage to tnbing or valve Sweat inlet of TXV, marked _'IN" to liquid line Avoid excessive heat which could damage valve. 6. Install vapor elbow with equalize* adapter to suction robe of line set and suction connection to indoor coil Adapter has a 1/4 in. male connector _br attaching equalize* tube 7. Connect equalizer robe of TXV to 1/4 in. equalizer fitting on vapor line adapter. 8. Attach TXV bulb to horizontal section of suction line using clamps provided. Insulate bulb with fieldosupplied insulation tape. See Fig. 5 tbr con'ect positioning of sensing bulb. 12 Sweat inlet of TXV, marked IN, to liquid excessive heat which could damage valve. tine Avoid 13 Install vapor elbow with equalizer adapter to vapor tine oftine set and vapor connection to indoor coil. Adapter has a 1/4 in male connector for attaching equalizer robe. 14 (onnect equalizer robe of TXV to 1/4 in. equalize*" fitting on vapor line adapter. Use backup wrench to prevent damage to equalizer fitting. 15. Proceed with remainder of unit installation. with a TXV metering device Step 7--Making Relieve repair Use Piping pressure Connections and recover or final unit disposal all service including ports solenoid and all refi'igerant to avoid personal open before system iriim'y,,-or death. all flow-control devices, valves. 9. Proceed with remainder of unit installation. REPLACING TXV ON Ro22 INDOOR (OIL 1. Pump system down to 2 psig and recover refi'igerant. 2. Remove cabinet. coil access panel and fitting panel fiom front of 3. Remove TXV support clamp using a 5/16-in. nut driver. Save the clamp. 4. Remove Ro22 TXV using a backup wrench on flare conneco tions to prevent damage to tubing. 5. Using wire cutters, cut equalizer robe off flush with vapor robe inside cabinet. Do not leave system nainimum required extremely susceptible ends of robing open to atmosphere _br installation sealed to moisture during any longer POE oil in compressor absorption installation. Always than is keep _--10 REFRIGERANT O'CLOCK "_ 2 O'CLOCK 7 TUBING Connect vapor tube to f_tting on outdoor unit vapor service valves, Connect liquid tube to filter drier (See Fig 6 and Table 1,) Use refrigerant grade robing, SENSING SWEAT CONNECTION "L--_SUCTION TUBE 8 O'CLOCK 4 O'CLOCK 7/8 IN. OD & SMALLER LARGER To a\oid valve damage while wrapped in a heat-sink material Service THAN 7/8 IN. OD valves wrapping A81032 sweat of Sensing Bulb local and factory EVACUATE If ANY refi'igerant tubing is buried, provide a 6 in, x ertical rise at serxice vah,e Refi'igerant tubing lengths up to 36 in may be buried v,ithout I:urther special consideration. Do not bury lines fbr lengths o_er 3d in damage to unit or service valves observe the a brazing * Wrap material Outdoor tubing sen'ice wet or use a heat sink valves capacity For tubing in Manual Residential Pumps Ersing Puron(a Table 1 fbr field accessory requirements. No buried-line the cloth to indoor losses Split-System Refrigerant robing using accesso_- grade robing of correct requirements can Application applications section refiigerant and performance recommendations to with or field-supplied size and condition. tial beyond 50 fl, substan- occur Following Guideline and Air Conditioners will reduce diameters. greater these Refer the Service and Heat losses. to Table Refer 2 for they and in the system. OETTDOOR I_NIT CONNECTED INDOOR [NIT TO FACTORY-APPROVED Outdoor unit contains cmTect system refrigerant charge %r operation with ARI rated indoor unit with highest sales volume when connected by 15 t't of field-supplied or fitctow-accesso W robing Check refi'igerant charge for n_aximum efficiency INSTALL LIQUID-LINE FILTER DRIER W To axoid plugged compressor circuits drier in liquid fi'om fbctory and ready drier with accepted requirements. Afier braze methods Refrigerant t'or leak testing. %r brazing a wet cloth, and materials. robing This check and indoor should include all joints. REFRIGERANT compressor sor as a vacunnl TUBING damage, AND INDOOR nexer use the system COIL compres= pump ' damage and expansion II O and per%finance device, The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is flee of air and liquid water (See Fig. 7,) Triple Evacuation Method The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in of mercu W vacuum and system does not contain any tiquid water Refkr to Fig. 8 and proceed as fbllows: 1, Pump system down to 28 in. of" mercu W and allow pump to continue operating fPr an additional 15 minutes than 36 in. If refligerant robes or indoor coil are exposed to atmosphere, must be evacuated to 500 microns to eliminate contamination moisture must be Deep Vacuum Method shield units may be connected package To avoid xahes Refiqgerant robes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns, The ahernate triple evacuation method may be used if" the procedure outlined below is %llowed Always break a vacuum with dW nitlogen, following: * Use code serxice such as a wet cloth. and filter using industry coil are now tea@ field To prevent valve connections Consuh Fig. 5--PosRion are closed service brazing, loss installation due to of filter 2, Close service valves and shut off'vacuum pump, 3, Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig 4. (;lose service valve and allow system to stand fbr 1 hr During this time, &y nitrogen will be able to diffuse throughout the system absorbing moisture, 5, Repeat this procedure as indicated in Fig 8, System will then be f?ee of" any contaminants and ware* vapor FINAL TUBING CHECK IblPORTANT: Check to be certain factor)' robing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on f_eder tubes are secure and tight. Step 8--Make Emeetrieal Connections line is required. Refkr to Fig (5and install filter drier as fbltows: i*!iuryor 1, Braze 5-in. connector robe to tiquid service valve, Wrap fiher &ie* with damp cloth To avoid personal 2, Braze filter drier between connector tube and liquid robe to indoor coil, Flow arrow must point towards indoor coil Be sure field wiring complies and electrical and voltage with compressor codes, terminal death, do not supply pox_ er to unit box cover removed. with local and national to system is within fire, safkty, limits shown LIQUID-LINE ////// FILTER-D RYER CONNECTOR TUBE A99331 Fig. 6--Liquid-Line Table 1--Refrigerant UMT SiZE Connections and Recommended MOULD Diameter Tube Diameter Connection Filter Drier Connection Liquid Line and Vapor Tube Diameters VAPOR Diameter (in.) VAPOR {LONG UNE} Connection Diameter Tube Diameter Tube Diameter 0t8, 024 3/8 3/8 5/8 5/8 5/8 030, 036 3/8 3/8 3/4 3/4 3/4 3/4 7/8 042, 048 060 3/8 3/8 3/8 3/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1=1/8 NOTES: 1. Tube diameters are for lengths up to 50 ft. For tubing {engths greater than 50 ft horizontal, and Service Manual -- Air Conditioners and Heat Pumps Using Puron® Refrigerant 2. Do not apply capillary tube indoor coils to these units. TaNe 2--Accessory Crankcase Heater Freeze Thermostat Winter Start Contro_ Accumulator Compressor Capacitor Start Assist and Relay MotorMaster® Control or Low-Ambient Pressure Switch Wind Baffle Coastal REQUIRED FOR LONG-LINE APPUCATBONS* (OVER 50 FT) Yes Yes No No No No No No Yes Yes No Yes No No See low-ambient FHter instructions No No No No Yes See Long-Line Application Guideline No Fan Motor Yes_: improper voltage protection ( ontact local power See unit rating plate _br cot_'ection fbr recommended of circuit device. NOTE: Operation install unit in system pem_issible Use of unit on improper where voltage line voltage constitutes See unit rating plate. Install NEC to handle may fluctuate above wire only between disconnect branch No and Heat Pumps Using Puron® Refrigerant circnit unit starting accessible disconnect current Locate of adequate disconnect from unit, per Section size within 440-14 per sight of NEC. ROUTE GROUND AND POWER WIRES Do not or below limits. copper NOTE: from and readily abuse and could affect unit reliability. NOTE: unit company No No * For tubing line sets between 50 and 175 ft, refer to Application Guideline and Service Manual -- Air Conditioners 1 Only when low-pressure switch is used $ Required for low-ambient controller (full modulation feature) and MotorMaster® Control only. on unit rating plate Guideline REQUIRED FOR SEA COAST APPUCATIONS {WITHIN 2 MRLES) No Yest No Liquid_LineSolenoid Valve or Hard Shutoff TXV BaH Bearing consult the Application Usage REQUIRED FOR LOW-AMBII=NT APPLICATIONS {BELOW 55°F) Yes ACCESSORY Evaporator or greater than 20 fl vertical differential, switch and Remove access from disconnect cont*ol box panel to gain access through power wiring to unit wiring. hole provided Extend wires and into unit DISCONNECT PER N.E.C. AND/OR LOCAL CODES 50O0 4500 1 4000 3500 CONTACTOR <?o z 3000 _2500 FIELD POWER _2000 WIRING VACUUM TIGHT TOO WET 1500 3 PHASE ONLY BLUE 1000 500 FIELD GROUND WIRING 0 1 2 3 4 MINUTES 5 6 C 3 TIGHT DRY SYSTEM @ GROUND LUG l 7 A94025 A95424 Fig. 7--Deep Fig. 9--Line Vacuum Graph NOTE: I EVACUATE I Use mum 40va of available power ing and increase IBREAK VACUUM WiTH DRY NITROGEN accessory I IBREAK VACUUM W,TH DRY NITROGEN I F- vq the transfbmaer capacity' t_ansformer Step 9--Compressor When equipped minimum may exceed the mini- total transformer load- or split the load with an as required. Crankcase with a crankcase of 24 hr before only, set fl-iermostat outdoor unit. IEVAOUATEI A crankcase (IF IT HOLDS Determine IMPORTANT: Check factory wiring and field wire connections to ensure terminations are secured properly Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc IEVAOUATEI FOR TIGHT, 24v accessories requirement. FINAL WIRING CHECK F- vq CHECK Power Connections DRY SYSTEM 50 DEEP VACUUM) ft heater Refer Residential To fl/mish and close is required 1o Application Split-System fl/rnish unit starting to OFF Heater heater, power electrical if re['rigerant Guideline robing a 1o heater disconnect to is longer and Service Air Conditioners to heater power than Manual and Heat Pumps using Puron R; Refrigerant [CHARGE SYSTEM I A95425 Fig. 8--Triple Evacuation Step Method Step The unit ground cabinet must to minimize should occur metal condnit electrical The have ground when shock, injury if an may consist installed codes. Failure electric an maintem/pted personal fault in accordance wire with or To prevent existing Connect ground safety. Connect AND wire can result in an *Do not overcharge *Do not operate CONNECT CONTROL Route control 24v connect thermostat All excessive wiring incoming must power for control connection through wiring. color-coded, more voltage not system in control as shown box or personal injury, observe for in Fig. 9. vent repair system with refiigerant. unit in a vacuum refiigerant to or at negative atmosphere. pressure. Recover during or final unit disposal. *Do riot disable low=pressure switch. In scroll=compressor applications: *Dome may be hot. temperatures be NEE contlol wiring grommet and (See Fig. 11.) insulated than wires, voltage (35°C 100 ft t'rom minimnm) unit, wire. If as measured use No. 16 AWG color-coded wire Class power, 1 and mnst f_n coil transformer, 24vi40va To prevent clothing, personal be separated fi'om minimun_. or accesso_ trans- injury and gloves when wear handling safety glasses, refi'igerant protective arid observe the fbllowing: *Back=seating drop. leads. Use l?urnace tlansformer, fbrmer WIRES to contactor damage WIRING wires is located along the contlol to avoid wiring leads to conhoi Use No. 18 AWG POWER to ground po_er compressor the fbllowing: fire, or death GROL_D Accessories 1 l--Start-Up *Do (ONNE(T Electrical or unbroken electrical of electrical to follow this warning 10--install Refer to the indixidual instructions packaged x_ith kits or accessories when installing. valves. removing service valves are riot equipped Fully back seat (counterclockwise) gage=port *Front-seating valves, with Schrader valve stem before cap. service valves are equipped with Schrader m ° 3-phase scroll ° A flashing compressors are rotation LED on phase (See Fig. 10 and Table ° This will not allow monitor contactor these steps to properly system is evacuated, vapor service valves. is shipped fully back replace electrical 4_ Set room stem is below indoor 5_ Set room mode, disconnects thermostat seat (open) fi'ont seated caps aiier ambient refi'igerant and and is opened and tighten to with Step 12--Check UNIT (HARGE Factory Charge charge and charging Be sure set point in manifold NOTE: charge ÷ 0.6 to ON or AUTO unit for 15 minutes Check system OF OPERATION power oziff of 3/8-in. three phase models and thermostat outdoor units to detect ibr compressor blower NOTE: 25 ft - 15 ft COOLING Transfom_er is phasing To correct line charge required line. conditions above are not with unit rating or below 15 ft for a 25-fl line set: 6 oz of additional charge PROCEDURE installed is correct, relay, circuit the phasing, the contactor interchange When ff_ermostat is satisfied, its and blower unit relay. an with cooling unit TXV mode a minimum liquid service gage to service 3. Measure TXV require with open, and motors a time-delay additional 90 sec will not be liquid of 10 minutes relay circuit, the system efficiency. CONTAC IDR @ O be_bre checking valve pressure by attaching an accurate line or temperature electronic by attaching thermometer an to accurate liquid subcooling near temperature. required subcooling temperatuie at a specific liquid line pressure, add refi'igerant if liquid line temperature higher than indicated or reclaim refrigerant if temperature lower. Allow a tolerance of ÷ 3°F. stop. to increase by the 5. Refkr to Table 4. Find the point where required subcooting temperature intersects measured liquid service valve pressure. 6. To obtain de-energizing charging port. thennistor type outdoor coil. indoor any two of the three contacts Compressor is equipped runs Puron® method. 2. Measure and compresstarting Mode 4. Refkr to unit rating plate fbr required is incon'ect, side. blower charging metering suction charge. is correctly on high speed. on the field indoor power finn motor indoor unit blower connections If indoor the units are equipped outdoor power contactor into in accordance liquid 10 ff X 0.6 oziff ONLY subcooling R-Y and R-G. On If the phasing starting R-G energizes If the energized. circuits in the incoming operation. contactor, motor makes with scroll compressors, monitor R-Y energizes sor circuit. on unit informa- a commercial-type refi'igerant or subcooling additional 1. Operate On a call for cooling, phased are shown EXAMPLE: Units to indoor energize& with a phase Charge must be weighed Units with Cooling on method units using hose. If superheat favorable, To calculate and fan control Puron® charge. SEQUEN(E Turn operation Reversed phase Normal respectively. temperature. Operate device plate system. temperature. to (OOL as desire& liquid (closed) system to energize at desired thermostat No calt for compressor 2 field wiring refiJgerant flow. Replace caps finger-tight wrench an additional 1/12 ram. 3_ (;lose OFF tion plate_ Charge stem(s) Led Indicators STATUS FLASHING ON to be energize& with valve caps installed, rotation start up the system. 1_ Alier 2_ /nit reverse and interchange Monitor LED sensitive. indicates 3.) ° Disconnect power to unit leads on unit contacton Follow TaNe 3--Phase Units with Indoor Pistons Units installed heat metho& with The fbllowing procednre 21 percent 1 indoor of its rated Operate is is unit pistons require is valid when charging indoor by the super- airflow is within ÷ (FM. a minimum of 10 minutes befbre checking charge_ 2. Measure suction suction valve 3. Measure mistor valve. OFFsNO ON sol< FLASHsPHASE 24VAC PROSLEH suction outdoor 5. Measure indoor gage to temperature by attaching thermometer air &y-bulb air (entering temperature indoor an accurate to suction ther- line at service with thennometer. coil) wet-bulb tempera- Refkr to Table 5. Find air wet-bulb outdoor temperature temperature and evaporator At this intersectiom note superheat. LI AO0010 Monitor an accurate ture with a sling psychrometer. L2 entering Fig, lO--Phase by attaching port. type or electronic 4. Measure 6 L3 pressure service Control 7. Refkr to Table and suction temperature 6. Find superheat pressure. temperature At this intersection, located in item 6 note suction line Table 4_Requi/ed REQUIRED SUBCOOLING TEMPERATURE LIQUIO PRESSURE AT SERVICE VALVE 2. Tighten (OF) service 8 10 12 14 16 18 189 58 56 54 52 50 48 195 60 58 56 54 52 50 202 62 60 58 56 54 52 208 64 62 60 58 56 54 215 66 64 62 60 58 56 222 68 66 64 62 60 58 229 70 68 66 64 62 60 236 72 70 68 66 64 62 For continuing 243 74 72 70 68 66 64 251 76 74 72 70 68 66 ment failure, equipment 259 78 76 74 72 70 68 266 80 78 76 74 72 70 274 82 80 78 76 74 72 283 84 82 80 78 76 74 291 86 84 82 80 78 76 299 88 86 84 82 80 78 308 90 88 86 84 82 80 317 92 90 88 86 84 82 826 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96 94 384 106 104 102 100 98 96 895 108 106 104 102 100 98 406 110 108 106 104 102 100 416 112 110 108 106 104 102 427 114 112 110 108 106 104 439 116 114 112 110 108 106 450 118 116 114 112 110 108 462 120 118 116 114 112 110 474 122 120 118 116 114 112 486 124 122 120 118 116 114 499 126 124 122 120 118 116 511 128 126 124 122 120 118 8, If a unit has a higher temperature, reache& 9. If unit add has temperature, reached. 10. When adding service changes, chart. suction ref?igerant ref?igerant, air line temperatuie until reclaim charge 13--Final mMPORTANT: suction rekigerant a lower port using 11. If outdoor Step 1, Ensure that all wiring and robing is secure in unit be%re adding panels and coxers Securely fasten all panels and covers, Liquid-Line Temperature (°F) line charge temperatore or charted in liquid than %rm leaving areas, such mation charted is into suction pressure at suction valve indicated Checks Before Frequency job, be sure to do the following: on with owner AND Cl]ecklist maintenance of maintenance as coastal past finger system outlined and place tight. operation in manual. in customer MAINTENANCE high per%m_ance periodic Explain requirements InMallation CARE device. line temperature Manual maintenance 4. Fill out Dealer file, is temperature User's and periodic than charted temperature temperature until a flow=restricting to new suction charted 3. Leave valve stem caps to 1i12-mm and to minimize must may vary depending applications. possible be perfbm_ed See User's upon Manual equip= on this geographic for infor- Table 5--Superheat OUTDOOR TEMP [°F} 55 EVAPORATOR ENTERING Charging ABR TEMPERATURE (°FWB) 50 9 52 12 54 14 56 17 58 20 60 23 62 26 64 2g 66 32 68 35 70 37 72 40 74 42 76 45 60 7 10 12 15 18 21 24 27 30 33 35 38 40 43 65 -- 6 10 13 16 19 21 24 27 30 33 36 38 41 70 -- -- 7 10 13 16 19 21 24 27 30 33 36 39 75 -- -- -- 6 9 12 15 18 21 24 28 31 34 37 80 .... 5 8 12 15 18 21 25 28 31 35 88 ...... 8 11 15 19 22 26 30 33 90 ...... 5 9 13 16 20 24 27 31 95 ....... 6 10 14 18 22 25 29 100 ........ 8 12 15 20 23 27 105 ........ 5 9 13 17 22 26 110 ......... 6 11 15 20 25 8 14 18 23 .......... 118 Table 6--Required SUPERHEAT TEMP {OF} 0 Suction-Line SUCTION PRESSURE Temperature (°F WB) AT SERVICE PORT (PSIG} 107.8 35 112.2 37 116.8 39 121.2 41 126.0 43 130.8 45 138.8 47 140.8 49 145.8 5I 2 37 39 41 43 45 47 4g 51 53 4 39 41 43 45 47 49 51 53 55 ¢ 41 43 45 47 4g 51 53 55 57 8 43 45 47 49 51 53 55 57 59 10 45 47 49 51 53 55 57 59 61 t2 47 49 51 53 55 57 5g 61 63 14 49 51 53 55 57 59 61 63 65 t6 51 53 55 57 5g 61 63 65 67 18 53 55 57 59 61 63 65 67 69 20 55 57 59 61 63 65 67 69 71 22 57 59 61 63 65 67 69 71 73 24 59 61 63 65 67 69 71 73 75 26 61 63 65 67 6g 71 73 75 77 28 63 65 67 69 71 73 75 77 79 30 65 67 69 71 73 75 77 79 81 32 67 69 71 73 75 77 7g 81 83 34 69 71 73 75 77 79 81 83 85 36 71 73 75 77 79 8I 83 85 87 38 73 75 77 79 81 83 85 87 89 40 75 77 79 81 83 85 87 89 91 A/C THERMOSTAT Typical FURNACE A/C THERMOSTAT A}R CONDmONER Typical FAN CO_L AIR CONDITIONER 24 VAC HOT 24 VAC HOT 24 VAC COM 24 VAC COM HEAT STAGE 1 F_ HEAT STAGE 1 COOL STAGE 1 F_ COOL STAGE 1 INDOOR FAN (See Thermostat D' INDOOR FAN Fig. 11--Generic Wiring Diagram Installation instructions for wiring specific A02326 unit combinations) LEGEND 24-V FACTORY WIRING 24-V FIELD WIRING FIELD SPLICE CONNECTION CONTACTOR A97368 10 II PURON@ (R-4t0A) QUICK REFERENCE GULDE • Puron® refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment replacement components are designed to operate with Puron®. • Puron® refrigerant and cylinders are rose colored. • Recovery cylinder service pressure rating must be 400 psig. DOT 4BA400 or DOT BW400. • Puron® systems should be charged with liquid refrigerant. Use a commercial manifold hose when charging into suction line with compressor operating. type metering device in the • Manifold sets should be at least 700 psig high side and 180 psig low side with 550 psig low-side retard. • Use hoses with 700 psig service pressure rating. • Leak detectors should be designed to detect HFC refrigerant. • Puron®, as with other HFCs, is onty compatible with POE oils. • Vacuum pumps will not remove moisture from oil. • Do not teave Puron® suction line filter driers in line longer than 72 hrs. • Do not use liquid-line filter driers with rated working pressures less than 600 psig. • Do not install a suction-line • POE oiis absorb moisture filter drier in tiquid line. rapidty. Do not expose oil to atmosphere. • Poe oils may cause damage to certain plastics and roofing materials. • Wrap all filter driers and service valves with wet cloth when brazing. • A factory-approved liquid-line filter drier is required on every unit. • Do not use an R-22 TXV. • If indoor unit is equipped with an R-22 TXV, it must be changed to a Puron® TXV. • Never open system to atmosphere while it is under a vacuum. • When system must be opened for service, recover refrigerant, break vacuum with dry nitrogen prior to opening to atmosphere. Evacuate to 500 microns prior to recharging. • Atways replace filter drier after opening system for service. • Do not vent Puron® into the atmosphere. • Do not use capillary tube coils. • Observe alt warnings, cautions, and bold text. Copyright 2002 CARRIER Corp. _ 7310 W. Morris St • Mdianapolis, IN 46231 Manufacturer Book 1 4 Tab 3a 2a reserves PC 101 the right Catalog to discontinue, or No 533-80079 change at any time, 38esglsi specifications PrJl3tedin U.S.A. or designs Form 38ESG-1SI without notice and Pg 12 without incurring 1%02 obJigations. Replaces: New