Lesson 1Cooling Agent Pipe Fitting: Materials, Paths, Cover, Join/Weld Best Ways and Pressure Test PointsCovers cooling agent pipe design and fitting, including material pick, paths, holds, cover, join or weld, and pressure test, 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 Controls, Thaw Control Plans, and BAS Join PointsCovers pick, place, and wire of controls and sensors, including heat switches, case controls, thaw plans, and BAS join, to get true heat control, power saving, and strong 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 Drop Management: Traps, Slope, Extra Drains, and Clean Tie-insFocuses on drain and water drop management, including trap design, line size, slope, extra drains, and clean tie-ins, to stop water harm, germ growth, smells, and bother service calls in air cool/cold 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: Clear Spaces, Build Holds, Water Drop Paths, and Upkeep AccessDescribes site ready for air cool/cold fittings, including clear spaces, build holds, holes, water drop paths, and upkeep access, making sure safe, lasting, and fixable systems that meet project 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, Condensing Units, and Rack Machine Place, Shake Stop, and Sight Line ThoughtsExplains best ways for placing outside units, condensers, and racks, handling air flow, noise, shake stop, build hold, and service access, while keeping clear 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 Fitting Steps for Comfort Air Cool and Show CasesGives step by step ways for fitting inside units and evaps in comfort air cool and show cases, including mount, air flow, pipe ends, traps, and service access to make sure good work, quiet, and fixable run.
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 Joins: Service Size, Cut-offs, Circle Guard, Ground, and Control PowerDetails right electric service size, cut-off place, circle guard, ground, and control power wire for air cool/cold systems, focusing on rule follow, safe ends, labels, and check 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 Machines, and Safety Gear: Manifold Gauges, Micron Vacuum Pump, Leak Finders, Heat/Wet Meters, Clamp Meters, Join Tools, Agent Scales, Recovery Machines, Safety ClothesCovers pick, set up, and safe use of main air cool/cold tools, test machines, and safety gear, including set true, upkeep, and field ways that make sure 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 9Key Safety Steps: Agent Handle Rules, Electric Lock/Tag, Tight Space Thoughts, and Chem Show ControlExplains main safety ways for agent handle, electric work, tight spaces, and chem show, stressing rule follow, risk check, and steps that stop hurt, thing harm, and nature bad.
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
