Lesson 1Inside unit mounting: placement heights, refrigerant line entry, drip tray directionExplains correct inside unit positioning for comfort, service access, and drainage. Details line set routing, wall holes, and drip tray direction to prevent leaks, noise, and future service problems.
Select optimal wall and mounting heightPlan refrigerant line chase and routingDrill and seal wall penetrationsSet and level indoor mounting plateOrient and test condensate drip trayLesson 2Electrical connections, phase checks, and safety locks before powering upDetails safe electrical endings, wire sizing, and grounding. Includes phase rotation checks, control wiring, and checking safety locks before powering the split system.
Verify supply voltage and breaker sizeTerminate power and ground conductorsConnect control and communication wiringCheck phase rotation on three-phase unitsTest safety interlocks and fusesLesson 3Recording settings and handing over basic operation notes to ownerFocuses on recording final settings, control parameters, and test results. You will prepare owner handover notes, basic operating instructions, and maintenance reminders for professional finish.
Record final control and timer settingsLog pressures, temperatures, and testsCreate basic user operation guideExplain filter cleaning and maintenanceObtain owner sign-off and warranty docsLesson 4Vacuuming and air removal: pump choice, target vacuum level, moisture removal stepsGuides you through pump choice, hose setup, and reaching target vacuum. Stresses deep air removal, moisture removal, micron gauge use, and decay tests to confirm system dryness and tightness.
Select appropriate vacuum pump sizeConnect hoses and core removal toolsPull vacuum to target micron levelPerform standing vacuum decay testRecognize signs of moisture or leaksLesson 5Leak finding and pressure testing: dry nitrogen pressure test, electronic leak finder useExplains how to pressurise with dry nitrogen, isolate sections, and watch pressure decay. You will learn safe regulator use, soap solution ways, and electronic leak finder application.
Set up nitrogen cylinder and regulatorPressurize system to test pressure limitsCheck joints with soap solutionUse electronic leak detector correctlyRecord test pressure and durationLesson 6Wall bracket and mounting frame fitting: levelling, anchor choice for block or stud wallsDetails how to fit wall brackets and frames for strong support. Focuses on levelling, anchor choice for block or stud walls, load paths, rust protection, and checking pull-out strength and stability.
Assess wall type and load capacityChoose anchors for masonry or studsMark, drill, and clean anchor holesLevel brackets and tighten fastenersVerify bracket alignment and rigidityLesson 7Start-up steps and commissioning checks: superheat/subcooling measurement, steady temperature check, drainage test, noise and shake checksWalks through first start-up, including mode choice, superheat and subcooling checks, and temperature steadiness. Also covers water drainage tests, noise, and shake evaluation.
Follow manufacturer start-up sequenceMeasure superheat and subcoolingVerify supply and return temperaturesTest condensate drainage performanceAssess operating noise and vibrationLesson 8Site prep and pre-installation checks: tools, permits, clearances, materials listCovers site readiness before work starts, including tool choice, permit check, and safe clearances. You will also make a materials list to avoid delays and ensure code-following, efficient fitting.
Verify site access and work area safetyConfirm permits, codes, and utility locationsCheck indoor and outdoor unit clearancesPrepare complete tools and materials listInspect structure for mounting suitabilityLesson 9Outside unit fitting: base pad or brackets on outer wall, anti-shake pads, clearance and airflow distancesDescribes outside unit placement on pads or wall brackets, with care for clearances, airflow, shake control, and service access. Includes rain, flooding, and noise thoughts for long-term reliability.
Select base pad or wall bracket systemSet required service and airflow clearancesInstall and position anti-vibration padsLevel unit and secure to supportsPlan for drainage, snow, and floodingLesson 10Refrigerant line fitting: cutting, smoothing, bending, flare vs brazing steps, torque and sealing waysCovers cutting, smoothing, and bending copper lines without kinks. Compares flaring and brazing steps, torque values, and sealing ways to ensure leak-free, code-following refrigerant piping.
Measure, cut, and deburr copper tubingUse bending tools to avoid kinksPrepare and form accurate flaresApply torque to flare nuts correctlyInsulate and support line sets properlyLesson 11Opening service valves, refrigerant release steps and handling closed refrigerant systemsExplains opening service valves and releasing factory charge without adding dirt. Covers closed refrigerant systems, valve stem handling, and recording final operating pressures.
Identify service valves and capsBackseat and crack valves correctlyRelease captive refrigerant safelyCheck for leaks after opening valvesRecord operating pressures and temps
