AIR CONDITIONER - Heronhill Air Conditioning Ltd

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FILE NO. SVM-050208-5-2. Refrigerant piping connection1. Cut the pipe with a pipe cutter.90°DieObliquityFig. 8-5-2PipeARoughness2. Insert a flare nut into the pipe, and flare the pipe.• Projection margin in flaring : A (Unit : mm)WarpOuter dia.of copper pipe(Unit : N·m)Tightening torque∅6.35 16 to 18 (1.6 to 1.8 kgf·m)∅9.52 30 to 42 (3.0 to 4.2 kgf·m)∅12.70 50 to 62 (5.0 to 6.2 kgf·m)• Tightening torque of flare pipe connectionsThe operating pressure of R410A is higher than that ofR22. (Approx. 1.6 times). It is therefore necessary tofirmly tighten the flare pipe connecting sections (whichconnect the indoor and outdoor units) up to thespecified tightening torque. Incorrect connections maycause not only a gas leakage, but also damage to therefrigerant cycle.Flare at indoor unit sideFig. 8-5-3Rigid (Clutch type)Outer dia. R410A Conventionalof copper pipe tool used tool used6.35 0 to 0.5 1.0 to 1.59.52 0 to 0.5 1.0 to 1.512.70 0 to 0.5 1.0 to 1.5Fig. 8-5-4Flare at outdoor unit sideImperial (wing nut type, conventional tool)Outer dia.of copper pipeR410A6.35 1.5 to 2.09.52 1.5 to 2.012.70 2.0 to 2.5Fig. 8-5-5Mark lineAlign the centers of the connecting pipes and tightenthe flare nut as far as possible with your fingers. Thentighten the nut with a spanner and torque wrench asshown in the figure.Externallythreaded sideHalf unionFlare nutInternallythreaded sideCAUTION• Do not apply excess torque.• Otherwise, the nut may crack depending on theconditions.Use a wrench to secure.CAUTIONUse a torque wrench to tighten.Fig. 8-5-6• KEEP IMPORTANT 4 POINTS FOR PIPING WORK(1) Take away dust and moisture (Inside of theconnecting pipes.)(2) Tight connection (between pipes and unit)(3) Evacuate the air in the connecting pipes usingVACUUM PUMP.(4) Check gas leak (connected points)− 49 −
8-5-3. EvacuatingAfter the piping has been connected to the indoor unit,you can perform the air purge together at once.<strong>AIR</strong> PURGEEvacuate the air in the connecting pipes and in theindoor unit usinga vacuum pump. Do not use the refrigerant in theoutdoor unit.For details, see the manual of the vacuum pump.Be sure to use a vacuum pump with counter-flowprevention function so that inside oil of the pump doesnot flow backward into pipes of the air conditionerwhen the pump stops. (If oil inside of the vacuum pumpenters into the air conditioner, which use R410A,refrigeration cycle trouble may result.)1. Connect the charge hose from the manifold valve tothe service port of the gas side packed valve.2. Connect the charge hose to the port of the vacuumpump.3. Open fully the low pressure side handle of thegauge manifold valve.4. Operate the vacuum pump to start evacuating.Perform evacuating for about 15 minutes if the pipinglength is 20 meters. (15 minutes for 20 meters)(assuming a pump capacity of 27 liters per minute.)Then confirm that the compound pressure gaugereading is −101 kPa (−76 cmHg).5. Close the low pressure side valve handle of gaugemanifold.6. Open fully the valve stem of the packed valves(both sides of Gas and Liquid).7. Remove the charging hose from the service port.8. Securely tighten the caps on the packed valves.• Open the valve stem all the way out; but do not tryto open it beyond the stopper.• Securely tighten the valve stem cap with torque inthe following table:Gas side(∅12.70 mm)Gas side(∅9.52 mm)Liquid side(∅6.35 mm)Service portFILE NO. SVM-05020Fig. 8-5-850 to 62 N·m(5.0 to 6.2 kgf·m)30 to 42 N·m(3.0 to 4.2 kgf·m)16 to 18 N·m(1.6 to 1.8 kgf·m)9 to 10 N·m(0.9 to 1.0 kgf·m)Hexagonal wrenchis required.4 mmCompound pressure gaugePressure gauge-101kPa (-76cmHg)Handle LoCharge hose(For R410A only)Connecting pipeManifold valveHandle Hi(Keep full closed)Charge hose(For R410A only)Vacuum pumpadapter forcounter-flowprevention(For R410A only)VacuumpumpPacked valve at gas sideService port(Valve core (Setting pin))Packed valve at liquid sideFig. 8-5-7− 50 −
Page 1 and 2: FILE NO. SVM-05020SERVICE MANUALAIR
Page 3 and 4: 8. INSTALLATION PROCEDURE8-1 Safety
Page 5 and 6: FILE NO. SVM-05020MODEL RAS-10UKHP-
Page 7 and 8: FILE NO. SVM-05020Note : 1• Capac
Page 9 and 10: 2. CONSTRUCTION VIEWSFILE NO. SVM-0
Page 11 and 12: FILE NO. SVM-050203-2. RAS-10UKHP-E
Page 13 and 14: 3-4. RAS-10UKP-ES4 / RAS-10UA-ES4FI
Page 15 and 16: 3. WIRING DIAGRAMFILE NO. SVM-05020
Page 17 and 18: FILE NO. SVM-050204-3. Outdoor Unit
Page 19 and 20: FILE NO. SVM-050204-7. Outdoor Unit
Page 21 and 22: 5-2. RAS-10UKHP-ES4 / RAS-10UAH-ES4
Page 23 and 24: FILE NO. SVM-050205-4. RAS-10UKP-ES
Page 25 and 26: 6. CONTROL BLOCK DIAGRAMFILE NO. SV
Page 27 and 28: 7. OPERATION DESCRIPTIONFILE NO. SV
Page 29 and 30: 7-2-3. Dry operation([MODE] button
Page 31 and 32: 7-3. Hi POWER Mode([Hi POWER] butto
Page 33 and 34: 7-7. Current Limit Control *Heat pu
Page 35 and 36: 7-8-2. How to cancel auto restart f
Page 37 and 38: FILE NO. SVM-050207-11. QUIET ModeQ
Page 39 and 40: DANGER− 38 −FILE NO. SVM-05020
Page 41 and 42: 8-3. Installation8-3-1. Optional in
Page 43 and 44: 8-3-3. Installation/Servicing tools
Page 45 and 46: FILE NO. SVM-050201. Securely fit t
Page 47 and 48: FILE NO. SVM-050208-4-4. Piping and
Page 49: FILE NO. SVM-050208-4-6. Drainage1.
Page 53 and 54: FILE NO. SVM-050202. Set the remote
Page 55 and 56: 9-3. Primary Judgement9-3-1. Role o
Page 57 and 58: Table 9-4-1FILE NO. SVM-05020Checkc
Page 59 and 60: FILE NO. SVM-05020Cooling ModelOper
Page 61 and 62: FILE NO. SVM-05020RAS-13UKP-ES4, RA
Page 63 and 64: 9-5-5. Only outdoor fan does not op
Page 65 and 66: FILE NO. SVM-050209-5-7. Only the i
Page 67 and 68: 9-6. Troubleshooting for Remote Con
Page 69 and 70: (3) Checking procedureHeat Pump Mod
Page 71 and 72: Table 9-6-3 Approximate resistance
Page 73 and 74: FILE NO. SVM-05020No. Part name Pro
Page 75 and 76: FILE NO. SVM-05020No. Part name Pro
Page 77 and 78: FILE NO. SVM-0502011. EXPLODED VIEW
Page 79 and 80: FILE NO. SVM-0502011-4. Outdoor Uni
Page 81 and 82: 11-6. Outdoor Unit (RAS-13UA-ES4)FI
Page 83 and 84: FILE NO. SVM-0502011-8. Outdoor Uni

AIR CONDITIONER - Heronhill Air Conditioning Ltd

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