Lesson 1Cooling Agent Pipe Fitting: Materials, Paths, Cover, Join/Weld Best Ways and Pressure Check PointsCovers cooling agent pipe design and fitting, including material pick, paths, holds, cover, join or weld, and pressure checks, to cut pressure fall, 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 Sensors: Heat Switches, Case Controllers, Defrost Control Plans, and BAS Link PointsCovers pick, spot, and wiring of controls and sensors, including heat switches, case controllers, defrost plans, and BAS links, to get true heat control, power saving, and steady 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 3Drain and Water Build Management: Traps, Slope, Extra Drains, and Clean Tie-insFocuses on drain and water build management, including trap design, line size, slope, extra drains, and clean tie-ins, to stop water harm, germ growth, smells, and bother 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 Prep: Clear Spaces, Build Holds, Water Path, and Upkeep AccessDescribes site prep for HVAC/R fittings, including clear spaces, build holds, holes, water paths, and upkeep access, ensuring safe, lasting, and fixable systems that meet job 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, Condense Units, and Rack Equipment Spots, Shake Cut, and Sight Line ThoughtsExplains best ways for spotting outside units, condensers, and racks, handling air flow, noise, shake cut, build hold, and service access, while minding clear spaces, rules, and sight lines.
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 Fitting Steps for Comfort HVAC and Display CasesGives step-by-step ways for fitting inside units and evaps in comfort HVAC and display cases, including mount, air flow, pipe ends, traps, and service access to ensure good, quiet, and fixable 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 7Wiring Links: Service Size, Cut-offs, Circuit Guard, Ground, and Control PowerDetails right wiring service size, cut-off spots, circuit guard, ground, and control power wiring for HVAC/R systems, focusing on rule follow, safe ends, labels, and checks before power on.
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 Gear, and Safety Wear: Manifold Gauges, Micron Vacuum Pump, Leak Finders, Heat/Moisture Meters, Clamp Meters, Join Tools, Agent Scales, Recovery Machines, Safety KitCovers pick, set, and safe use of main HVAC/R tools, test gear, and safety wear, including set right, upkeep, and field ways that ensure true measures, good fitting, and worker guard on every 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 Steps: Agent Handle Rules, Wiring Lock/Tag, Tight Space Thoughts, and Chem Show ControlExplains key safety ways for agent handle, wiring work, tight spaces, and chem show, stressing rule follow, risk check, and steps that stop harm, property loss, and nature hurt.
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
