Lesson 1Indoor unit mounting: placement heights, refrigerant line chase entry, drip tray orientationExplains right inside unit place for comfort, fix access, and water drain. Details pipe set route, wall holes, and drip tray turn to stop leaks, noise, and later fix 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 interlocks prior to energizingDetails safe power ends, wire size, and ground. Includes phase turn checks, control wiring, and check of 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 3Documenting settings and handing over basic operation notes to ownerFocuses on writing final settings, control numbers, and test results. You will make owner handover notes, basic run guides, and fix reminders for pro 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 evacuation: pump selection, target vacuum level, moisture removal proceduresGuides you through pump pick, hose setup, and reaching target vacuum. Stresses deep air out, water remove, micron gauge use, and hold tests to confirm system dry and tight.
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 detection and pressure testing: dry nitrogen pressure test, electronic leak detector useExplains how to press with dry nitrogen, cut sections, and watch pressure drop. You will learn safe valve use, soap water ways, and electronic leak finder apply.
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 installation: leveling, anchor selection for masonry or stud wallsDetails how to fit wall holds and frames for strong support. Focuses on level, hold pick for stone or wood walls, load paths, rust guard, and check pull strength and steady.
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 sequence and commissioning checks: superheat/subcooling measurement, stable temperature verification, drainage test, noise and vibration checksWalks through first start, including mode pick, superheat and subcool checks, and temp steady. Also covers water drain tests, noise, and shake check.
Follow manufacturer start-up sequenceMeasure superheat and subcoolingVerify supply and return temperaturesTest condensate drainage performanceAssess operating noise and vibrationLesson 8Site preparation and pre-installation checks: tools, permits, clearances, materials checklistCovers site ready before start, including tool pick, permit check, and safe spaces. You will also make materials list to stop delays and sure rule-follow, good 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 9Outdoor unit installation: base pad or brackets on exterior wall, anti-vibration pads, clearance and airflow clearance distancesDescribes outside unit place on bases or wall holds, with care to spaces, air flow, shake control, and fix access. Includes rain, flood, and noise thinks for long sure work.
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 installation: cutting, deburring, bending, flare vs brazing workflow, torque and sealing practicesCovers cutting, smoothing, and bending copper lines without folds. Compares flare and braze steps, torque numbers, and seal ways to sure no leak, rule-follow refrigerant pipes.
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 procedure and handling captive refrigerant systemsExplains opening service valves and letting factory charge without dirty stuff. Covers held refrigerant systems, valve handle, and writing final run pressures.
Identify service valves and capsBackseat and crack valves correctlyRelease captive refrigerant safelyCheck for leaks after opening valvesRecord operating pressures and temps
