Lesson 1Electrical requirements: dedicated circuit, wire sizing, disconnect, grounding, surge protectionCovers electrical needs for safe split AC installs. Includes dedicated circuits, breaker sizes, wire gauges, disconnects, earthing, surge guards, and labelling.
Dedicated circuit and breaker sizingConductor sizing and insulation typeOutdoor disconnect location and ratingEquipment grounding and bondingSurge protection and labelingLesson 2Evacuation and pressure testing: vacuum pump use, micron gauge procedure, nitrogen pressure checks and leak detection methodsDetails vacuuming and pressure tests for leak-free systems. Covers nitrogen tests, soap/electronic leak checks, deep vacuum levels, micron readings, decay tests, and records.
Nitrogen pressure test proceduresSoap bubble and electronic leak checksVacuum pump setup and hose selectionMicron gauge targets and decay testRecording final test resultsLesson 3Mounting systems: wall bracket selection, anchor types, and structural considerationsExplains selecting and fitting mounts for indoor/outdoor units. Covers brackets, anchors for walls, load checks, rust-proofing, and vibration/noise control.
Choosing wall brackets and standsAnchor types for common materialsLoad rating and safety factorsCorrosion resistance and coatingsVibration and noise considerationsLesson 4Indoor unit siting: ideal height, clearance, airflow patterns, avoiding heat sources and sunlightCovers best indoor unit spots for comfort, efficiency, service. Includes height, clearances, airflow, avoiding kitchens, direct sun, blockages.
Recommended mounting height rangesMinimum side and top clearancesAvoiding heat sources and sunlightAirflow patterns and throw distanceNoise, drafts, and occupant comfortLesson 5Outdoor unit placement: stable pad, clearance for airflow, noise considerations and vibration isolationCovers outdoor unit spots for stable, quiet running. Includes base pads, anchoring, service space, airflow, rain/debris, vibration pads.
Pad selection and level installationRequired service and airflow clearancesAvoiding recirculation and obstructionsNoise impact on neighbors and indoorsVibration isolation pads and mountsLesson 6Drain line routing and trap design to prevent siphoning and odorsCovers condensate drain design to stop leaks, siphoning, smells. Includes gravity/pump drains, traps, vents, slopes, cleanouts, ends.
Gravity drain versus pump selectionRequired slope and support spacingTrap sizing and placement rulesVenting to prevent siphoningCleanouts and drain terminationLesson 7Connection techniques: flaring vs brazing copper, use of access valves, flare torque specs and leak-prevention practicesCovers leak-free copper joins. Compares flaring/brazing, prep, torque, nitrogen purge, leak checks.
When to flare versus when to brazePreparing and deburring copper tubeFlare nut torque values and toolsNitrogen purging during brazingLeak-prevention inspection stepsLesson 8Startup checklist and commissioning: opening service valves, superheat/subcooling checks, system balancing and test runCovers full startup post-install. Includes valve opening, airflow check, superheat/subcool, balancing, cooling/heating tests, records.
Pre-start visual and leak checksOpening service valves safelyMeasuring superheat and subcoolingBalancing indoor airflow and dampersTest run, data logging, and sign-offLesson 9On-site safety protocols: electrical lockout/tagout, ladder and fall safety, PPE for cutting/brazing, fire watch and hot work permitsCovers site safety for installs. Includes power isolation, ladder safety, fall gear, PPE for cutting/brazing, fire watch, hot work permits.
Lockout/tagout for AC circuitsLadder setup and fall protectionPPE for cutting and brazingFire watch roles and durationHot work permits and recordsLesson 10Refrigerant piping: piping length limits, elevation differences, proper slope for drain and refrigerant oil returnCovers piping for performance, compressor life. Includes length/lift limits, sizing, oil return slope, no traps/kinks, insulation, supports.
Maximum line length and lift limitsLine sizing per manufacturer chartsOil return slope and trap locationsInsulation of suction and liquid linesSupporting and securing line sets
