Lesson 1Cooling agent piping installation: materials, paths, insulation, brazing/welding best ways and pressure test pointsCovers cooling agent piping design and installation, including material choice, paths, supports, insulation, brazing or welding, and pressure testing, to cut pressure drop, stop leaks, and protect oil return and system reliability.
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: thermostats, case controllers, defrost control ways, and BAS joining pointsCovers choice, place, and wiring of controls and sensors, including thermostats, case controllers, defrost ways, and BAS joining, to get accurate temperature control, energy saving, and reliable system watching.
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 3Drainage and water management: traps, slope, extra drains, and clean tie-insFocuses on drainage and water management, including trap design, line size, slope, extra drains, and clean tie-ins, to stop water damage, germ growth, smells, and unneeded service 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: clearances, structure supports, water paths, and access for maintenanceDescribes site prep for HVAC/R installations, including clearances, structure supports, holes, water paths, and maintenance access, ensuring safe, strong, 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 5Outdoor units, condensing units, and rack equipment place, vibration stop, and sight line mattersExplains best ways for placing outdoor units, condensers, and racks, addressing air flow, noise, vibration stop, structure support, and service access, while following clearances, 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 6Indoor unit and evaporator installation steps for comfort HVAC and display casesGives step-by-step ways for installing indoor units and evaporators in comfort HVAC and display cases, including mounting, air flow, piping 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 7Electrical connections: service sizing, disconnects, circuit protection, grounding, and control powerDetails proper electrical service sizing, disconnect place, circuit protection, grounding, and control power wiring for HVAC/R systems, focusing on rule following, safe ends, labeling, and check before powering equipment.
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 safety gear: manifold gauges, micron vacuum pump, leak finders, thermometer/hygrometers, clamp meters, brazing tools, agent scales, recovery machines, safety itemsCovers choice, setup, and safe use of main HVAC/R tools, test tools, and safety gear, including check, upkeep, and field ways that ensure accurate measures, good installation, and worker protection 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 handling rules, electrical lockout/tagout, tight-space matters, and chemical exposure controlExplains key safety ways for agent handling, electrical work, tight spaces, and chemical exposure, stressing rule following, risk check, and steps that stop injury, property damage, and environment 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
