Lesson 1Pre-install checks: verifyin' unit model, matched components, refrigerant charge requirements, an' tool listDis section covers verifyin' indoor an' outdoor unit compatibility, nameplate data, refrigerant type an' charge, site conditions, an' required tools an' instruments before work begins, preventin' rework, damage, an' unsafe installations, check first.
Confirm indoor an' outdoor model compatibilityCheck nameplate voltage, phase, an' frequencyVerify factory refrigerant type an' base chargeAssess site conditions an' mountin' constraintsPrepare tools, PPE, an' test instrumentsLesson 2Commissionin' documentation: recordin' measurements, settings, an' customer handover paperworkHere yuh wi document measured values, configuration settings, an' test results, complete warranty an' regulatory forms, an' perform customer handover, explainin' controls, maintenance, an' key operatin' limitations clearly, hand over proper.
Record electrical an' refrigeration readingsNote configuration an' control settingsAttach photos or digital test reportsComplete warranty an' compliance formsExplain operation an' maintenance to userLesson 3Openin' service valves, initial charge verification, measurin' pressures an' temperatures, an' adjustin' fi altitude/line lengthDis section explain openin' service valves correctly, verifyin' total refrigerant charge, measurin' operatin' pressures an' line temperatures, an' applyin' corrections fi altitude an' line length fi keep inverter performance within design limits, adjust right.
Sequence fi crackin' service valvesCheck fi leaks at valve stemsCompare nameplate an' line length dataMeasure operatin' pressures an' tempsAdjust charge per manufacturer tablesLesson 4Insulatin' lines, securin' lineset an' electrical cable, an' clampin' fi minimize stressHere we cover insulatin' refrigerant lines, routin' an' securin' di lineset an' control cable, clampin' fi reduce mechanical stress, an' protectin' against UV, abrasion, an' vibration fi maintain efficiency an' prevent noise, secure good.
Select correct insulation thicknessInsulate suction an' liquid lines fullyBundle lineset an' control cable neatlyClamp an' support fi relieve strainProtect lines from UV an' sharp edgesLesson 5Evacuation an' leak test sequence: connectin' gauges, vacuum pump operation, holdin' test, an' interpretin' micron readingsHere yuh wi learn how fi connect manifolds an' hoses, pull a deep vacuum, perform a standin' vacuum test, interpret micron readings, an' identify leaks or moisture issues before releasin' refrigerant into di inverter system, test tight.
Correct manifold an' hose connectionsVacuum pump setup an' oil conditionTarget vacuum level an' pull-down timeStandin' vacuum an' rise test procedureInterpretin' micron trends fi leaksLesson 6Startup checks: amp draw, operatin' pressures, temperature split, refrigerant superheat/subcoolin' checks, listenin' fi abnormal noise, an' vibration assessmentDis section covers initial startup of di inverter system, includin' verifyin' amp draw, operatin' pressures, temperature split, superheat, subcoolin', an' checkin' fi abnormal noise or vibration fi confirm stable, efficient operation, start smooth.
Pre-start visual an' safety inspectionMonitor compressor an' fan amp drawMeasure suction an' discharge pressuresCheck supply-return temperature splitEvaluate noise, vibration, an' airflowLesson 7Proper condensate drain installation: ensurin' slope, trap formation (if required), an' routin' to approved discharge or pumpYuh wi learn how fi design an' install condensate drains wid proper slope, trap requirements, insulation, an' routin' to an approved discharge or pump, preventin' leaks, odors, an' water damage durin' coolin' an' dehumidification, drain good.
Determine drain outlet location an' sizeSet continuous slope an' support spacin'Trap design fi negative pressure unitsInsulate drain in humid environmentsTest drain flow an' leak tightnessLesson 8Preparin' mountin' plate, drillin' accurate holes, insertin' anchors, an' checkin' level an' plumbDis section details preparin' di indoor mountin' plate, markin' layout, drillin' accurate holes, installin' anchors, an' checkin' level an' plumb so di unit drains correctly, seals well, an' resists vibration over long-term operation, level it.
Mark plate position an' clearancesLocate studs or solid fixin' pointsDrill wall an' sleeve penetration holesInstall anchors suited to wall materialVerify plate level, plumb, an' rigidityLesson 9Makin' copper connections: cuttin', flarin' procedure step-by-step, or brazin' technique includin' flux an' purge wid nitrogenYuh wi learn correct copper tube cuttin', reamin', flarin', an' torquein', plus brazin' techniques wid nitrogen purgation an' proper flux use where applicable, ensurin' clean, leak-free joints fi inverter refrigerant circuits, connect tight.
Select tubin' size an' cuttin' toolsDeburr an' ream widout contaminatin'Flarin' dimensions an' tool setupTorque flare nuts to spec valuesNitrogen purge an' brazin' techniqueLesson 10Electrical hookup sequence: connectin' to local panel, breaker installation, earth bondin', control wirin', an' verifyin' polarityDis section explain safe connection to di supply panel, breaker sizin', groundin', polarity, an' low-voltage control wirin' fi inverter systems, ensurin' compliance wid codes, manufacturer requirements, an' reliable electronic operation, wire safe.
Confirm supply voltage an' breaker sizin'Route an' secure power cable to unitsEarth bondin' an' continuity checksIndoor-outdoor terminal block wirin'Verify polarity an' phase rotation
