Carrier 38CKE Wiring Diagrams

Also see for 38CKE: Installation instructions

38CKE50Hz Air ConditionerWith R---410a RefrigerantSingle and Three Phase1---1/2 To 5 TonsWiring DiagramsBLKYELCOMPBLKBLU CAPBLUBLUYEL*STBRN*SR*SCOFMBRNBRNBLK230 1ØPOWERSUPPLYGNDEQUIP+tA1A2HCFYELBLU/PNK(NOTE #8)*LPSBLU/PNK*HPSINDOOR BLOWER MOTOREXTERNALPOWERSUPPLY24 V(NOTE #4)INDOOR THERMOSTATRGYBRNYEL/PNK1 25A1EQUIPGND*SR*SCHCOMP*STCFCAPOFMA25 21SC R*LPS *HPSIFRTHERMOSTATINDOORYGR CREXTERNAL POWER SUPPLY 24 VCR+tCONTIFR-LEGEND- (SUPERHEAT °F AT LOW-SIDE SERVICE PORT)EVAPORATOR ENTERING AIR °F WB.TEMP °FOUTDOOR50TABLE I-SUPERHEAT CHARGING TABLE52 54 56 58 60 62 64 66 68 70 72 74 7655 9 12 14 17 20 23 26 29 32 35 37 40 42 4560 7 10 12 15 18 21 24 27 30 33 35 38 40 4365 -- 6 10 13 16 19 21 24 27 30 33 36 38 4170 -- -- 7 10 13 16 19 21 24 27 30 33 36 3975 -- -- -- 6 9 12 15 18 21 24 28 31 34 3780 -- -- -- -- 5 8 12 15 18 21 25 28 31 3585 -- -- -- -- -- -- 8 11 15 19 22 30 332690 -- -- -- -- -- ------------------ -- -- -- -- -- ---------------------------------------- ----5 9 13 16 20 24 27 3195 6 10 14 18 22 25 29100 8 12 15 20 23 275 9 13 17 22 266 11 15 20 258 14 18 23------ ---- -- --105110115918987858381797775408987858381797775733887858381797775737136858381797775737169348381797775737169673281797775737169676530797775737169676563287775737169676563612675737169676563615924737169676563615957227169676563615957552069676563615957555318676563615957555351166563615957555351491463615957555351494712615957555351494745105957555351494745438575553514947454341655535149474543413945351494745434139372514947454341393735085.782.479.276.073.070.067.164.2SUCTION PRESSURE AT SERVICE PORT PSIG.TEMP. °F 61.5SUPERHEAT(MEASURED AT LOW-SIDE SERVICE PORT)TABLE II-REQUIRED SUCTION TUBE TEMPERATURE °F-NOTES-1. Compressor damage may occur if system is overcharged.2. This unit is factory charged with R410A in accordance with the amount shown on the rating plate. The charge is adequate for mostsystems using matched coils and tubing not over 15 feet long. The best performance will be achieved when the unit operates witha suction gas superheat at the compressor inlet of 5 ºF at normal rating conditions of the air conditioning and refrigeration institute(ARI). This chart may be used to approximate the charge if ARI rating conditions cannot be obtained. ARI rating conditions areequivalent to DOE test “A” conditions. See product data literature for required indoor air flow rates and for use of line lengths over15 Ft.3. Relieve pressure and recover all refrigerant before system repair or final unit disposal. Use all service ports and open all flow-controldevices, including solenoid valves.CAUTIONCONNECTION DIAGRAM SCHEMATIC DIAGRAM (LADDER FORM)SCRYELYELCONTCAPCOMP*HPSIFR*LPSOFM*SC*SR*STCONTACTORCAPACITOR (DUAL RUN)COMPRESSORHIGH PRESSURE SWITCHINDOOR FAN RELAYLOW PRESSURE SWITCHOUTDOOR FAN MOTORSTART CAPACITORSTART RELAYSTART THERMISTORFACTORY POWER WIRINGFACTORY CONTROL WIRINGFIELD CONTROL WIRINGFIELD POWER WIRINGCOMPONENT CONNECTIONFIELD SPLICEJUNCTIONCOOLING ONLY CHARGING PROCEDURE* MAY BE FACTORY OR FIELD INSTALLEDCONT11 212313 11 21CONT23 13CONT336011-101 REV. B1. Symbols are electrical representation only.2. Compressor and fan motor furnished with inherent thermal protection.3. To be wired in accordance with national Electric N.E.C. and local codes.4. N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed withLLS.5. Use copper conductors only. Use conductors suitable for at least 75ºC (167ºF).6. If indoor section has a transformer with a grounded secondary, connect thegrounded side to the BRN lead.7. When start relay and start capacitor are installed, start thermistor is not used.8. If any of the original wire, as supplied must be replaced, use the same orequivalent wire.9. Check all electrical connections inside control box for tightness.10. Do not attempt to operate unit until service valves have been opened.11. Do not rapid cycle compressor. Compressor must be off 3 minutes to allowpressures to equalize between high and low side before starting.1. Operate unit a minimum of 10 minutes before checking charge.2. Measure suction pressure by attaching a gage to suction valve service port.3. Measure suction temperature by attaching an accurate thermistor type orelectronic thermometer to the suction line at service valve.4. Measure outdoor air dry-bulb temperature with a thermometer.5. Measure indoor air (entering indoor coil) wet bulb temperature with a slingpsychrometer.6. Refer to table I. Find outdoor temperature and evaporator entering air wet-bulbtemperature, at this intersection note the superheat.7. Refer to table II. Find superheat temperature located in step 6 and suctionpressure, at this intersection note suction line temperature.8. If unit has a higher suction line temperature than charted temperature, addrefrigerant until charted temperature is reached.9. If unit has a lower suction line temperature than charted temperature, removeand recover refrigerant until charted temperature is reached.10. If outdoor air temperature or pressure at suction valve changes, charge to newsuction line temperature indicated on chart.11. This procedure is valid when indoor air flow is within +/- 21% of its rated cfm.BLU/PNKYEL/PNKFig. 1 – 38CKE018 -- 036 --X--7 230--50--1

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