Lesson 1Electrical requirements: dedicated circuit, wire sizing, disconnect, grounding, surge protectionDescribes electrical needs for safe, rule-following split AC installs. Covers special circuits, breaker sizes, wire sizes, disconnect placing, grounding, joining, surge guard, and marking for service.
Special circuit and breaker sizingWire sizing and insulation kindOutdoor disconnect spot and ratingEquipment grounding and joiningSurge guard and markingLesson 2Evacuation and pressure testing: vacuum pump use, micron gauge procedure, nitrogen pressure checks and leak detection methodsDetails air removal and pressure testing steps to keep system dry and tight. Covers nitrogen pressure tests, soap and electronic leak checks, deep vacuum goals, micron gauge use, decay tests, and noting final readings.
Nitrogen pressure test stepsSoap bubble and electronic leak checksVacuum pump setup and hose choiceMicron gauge goals and decay testNoting final test resultsLesson 3Mounting systems: wall bracket selection, anchor types, and structural considerationsExplains picking and putting up mounting systems that safely hold indoor and outdoor units. Covers wall brackets, anchors for different materials, load figures, rust resistance, and shake and noise thoughts.
Picking wall brackets and standsAnchor kinds for common materialsLoad rating and safety extrasRust resistance and coatingsShake and noise thoughtsLesson 4Indoor unit siting: ideal height, clearance, airflow patterns, avoiding heat sources and sunlightExplains choosing the best indoor unit spot for comfort, good use, and service reach. Covers mounting height, wall and side spaces, air flow paths, noise, and avoiding heat sources, sun, and blocks.
Suggested mounting height rangesMinimum side and top spacesAvoiding heat sources and sunAir flow patterns and throw distanceNoise, drafts, and people comfortLesson 5Outdoor unit placement: stable pad, clearance for airflow, noise considerations and vibration isolationExplains picking and readying the outdoor unit spot for steady, quiet, and good work. Covers pad choice, anchoring, service spaces, air flow paths, snow and rubbish worries, and shake and noise control.
Pad choice and level installNeeded service and air flow spacesAvoiding air going back and blocksNoise effect on neighbours and insideShake isolation pads and mountsLesson 6Drain line routing and trap design to prevent siphoning and odorsExplains designing and routing water drains to stop leaks, sucking back, and smells. Covers gravity versus pump drains, trap sizes, airing, slope needs, clean spots, and ends that meet rules and clean ways.
Gravity drain versus pump choiceNeeded slope and support spacingTrap sizing and placing rulesAiring to stop sucking backClean spots and drain endLesson 7Connection techniques: flaring vs brazing copper, use of access valves, flare torque specs and leak-prevention practicesCovers ways to join copper lines without leaks. Compares flaring and brazing, explains when each fits, details flare readying, torque specs, nitrogen clearing during brazing, and leak-stop best ways.
When to flare versus when to brazeReady and smoothing copper tubeFlare nut torque values and toolsNitrogen clearing during brazingLeak-stop check stepsLesson 8Startup checklist and commissioning: opening service valves, superheat/subcooling checks, system balancing and test runCovers full startup and readying process after install. Includes opening service valves, checking air flow, looking at superheat and subcooling, balancing inside air flow, test running in cooling and heating, and noting readings.
Before-start visual and leak checksOpening service valves safelyMeasuring superheat and subcoolingBalancing inside air flow and dampersTest run, data noting, and sign-offLesson 9On-site safety protocols: electrical lockout/tagout, ladder and fall safety, PPE for cutting/brazing, fire watch and hot work permitsDetails key on-site safety rules before and during install. Covers electrical lockout/tagout, ladder setup, fall guard, PPE for cutting and brazing, fire watch jobs, and hot work permit needs on customer spots.
Lockout/tagout for AC circuitsLadder setup and fall guardPPE for cutting and brazingFire watch roles and timeHot work permits and recordsLesson 10Refrigerant piping: piping length limits, elevation differences, proper slope for drain and refrigerant oil returnFocuses on refrigerant pipe layout for good work and compressor life. Covers maker length and lift limits, line sizing, right oil return slope, avoiding traps and bends, insulation, and holding lines to stop shake.
Maximum line length and lift limitsLine sizing per maker chartsOil return slope and trap spotsInsulation of suction and liquid linesHolding and securing line sets
