Lesson 1Cold gas pipe set-up: stuff, path, cover, join/weld best ways and push test spotsCovers cold gas pipe plan and set-up, with stuff pick, path, holds, cover, join or weld, and push test, to cut push drop, stop leaks, and guard oil back and system trust.
Copper tube types, sizing, and fittingsOil return, risers, and line routing rulesPipe supports, hangers, and vibration loopsInsulation thickness, sealing, and UV protectionBrazing with nitrogen purge and joint cleaningPressure testing, standing tests, and recordsLesson 2Controls and feelers: heat stats, case controls, thaw control ways, and BAS mix spotsCovers pick, place, and wire of controls and feelers, with heat stats, case controls, thaw ways, and BAS mix, to get true heat control, power good, and trust system watch.
Thermostat types, staging, and placementCase controller inputs, outputs, and tuningDefrost strategies for cases and coilsTemperature, pressure, and humidity sensorsControl wiring, shielding, and terminationsBAS integration points, alarms, and trendsLesson 3Water drain and wet manage: traps, slant, extra drains, and clean tie-insFocus on water drain and wet manage, with trap plan, line size, slant, extra drains, and clean tie-ins, to stop water harm, germ grow, smells, and bother fix calls in HVAC/R systems.
Primary drain pan design and materialsTrap sizing for positive and negative pressureCondensate line sizing, slope, and supportsSecondary drains, float switches, and alarmsSanitary tie-ins, vents, and code complianceCondensate treatment and freeze protectionLesson 4Site ready: open spaces, build holds, wet path, and reach for fixDescribes site ready for HVAC/R set-ups, with open spaces, build holds, cuts, wet path, and fix reach, to make sure safe, last long, and fixable systems that meet plan needs.
Surveying site constraints and obstructionsPlanning equipment clearances and pathwaysStructural supports, pads, and roof curbsWall, roof, and sleeve penetrations sealingCondensate routing and freeze protectionService access, lighting, and work platformsLesson 5Outside units, cond units, and rack machine place, shake cut, and sight line thoughtsShows best ways for place outside units, conds, and racks, with air flow, noise, shake cut, build hold, and fix reach, while keep open spaces, rules, and sight line needs.
Clearances for airflow, service, and safetyRoof, pad, and wall mounting considerationsVibration isolators, inertia bases, and pipingNoise control and neighbor impact mitigationWeather, sun, snow, and debris protectionLine-of-sight, security, and equipment labelingLesson 6Inside unit and evap set-up steps for ease HVAC and show casesGives step-by-step ways for set-up inside units and evaps in ease HVAC and show cases, with mount, air flow, pipe ends, traps, and fix reach to make sure good, quiet, and keep work.
Locating indoor units for airflow and serviceHanging, leveling, and supporting evaporator coilsConnecting refrigerant lines and suction trapsThermal expansion valve and distributor setupAirflow checks, filters, and coil clearancesStart-up inspection and documentation pointsLesson 7Electric links: serve size, cut-offs, circle guard, ground, and control powerDetails right electric serve size, cut-off place, circle guard, ground, and control power wire for HVAC/R systems, focus on rule follow, safe ends, marks, and check before power on machine.
Reading nameplates and calculating load currentsSelecting wire size, insulation, and conduitOvercurrent protection and short-circuit ratingsEquipment grounding and bonding practicesControl transformers and low-voltage circuitsLabeling, torqueing, and testing terminationsLesson 8Tools, test tools, and safe gear: pipe gauges, micron suck pump, leak finders, heat/moist meters, hold meters, join tools, cold scales, get back machines, safe stuffCovers pick, set, and safe use of main HVAC/R tools, test tools, and safe gear, with set right, keep, and field ways that make sure true measures, good set-up, and worker guard on each job.
Manifold gauge types and proper hose handlingUsing micron gauges and vacuum pumps correctlyElectronic and bubble leak detection methodsClamp meters and temperature measurement basicsBrazing tools, nitrogen purge, and safetyRefrigerant scales, recovery units, and PPE useLesson 9Main safety guards: cold gas hold rules, electric lock/stop, tight space thoughts, and chem show controlShows key safety ways for cold gas hold, electric work, tight spaces, and chem show, stress rule follow, risk check, and steps that stop hurt, good harm, and nature harm.
Refrigerant handling, labeling, and cylinder storageAvoiding frostbite, asphyxiation, and eye injuriesLockout/tagout steps for HVAC/R equipmentConfined-space entry permits and ventilationChemical exposure limits and SDS interpretationSpill response, first aid, and incident reporting
