Lesson 1Refrigerant piping installation: materials, routing, insulation, brazing/welding best practices and pressure testing pointsCover refrigerant piping design an installation, including material selection, routing, supports, insulation, brazing or welding, an pressure testing, to minimize pressure drop, prevent leaks, an protect oil return an system reliability.
Copper tube types, sizing, an fittingsOil return, risers, an line routing rulesPipe supports, hangers, an vibration loopsInsulation thickness, sealing, an UV protectionBrazing wid nitrogen purge an joint cleaningPressure testing, standing tests, an recordsLesson 2Controls and sensors: thermostats, case controllers, defrost control strategies, and BAS integration pointsCover selection, placement, an wiring of controls an sensors, including thermostats, case controllers, defrost strategies, an BAS integration, to achieve accurate temperature control, energy efficiency, an reliable system monitoring.
Thermostat types, staging, an placementCase controller inputs, outputs, an tuningDefrost strategies fi cases an coilsTemperature, pressure, an humidity sensorsControl wiring, shielding, an terminationsBAS integration points, alarms, an trendsLesson 3Drainage and condensate management: traps, slope, secondary drains, and sanitary tie-insFocus pon drainage an condensate management, including trap design, line sizing, slope, secondary drains, an sanitary tie-ins, to prevent water damage, microbial growth, odors, an nuisance service calls in HVAC/R systems.
Primary drain pan design an materialsTrap sizing fi positive an negative pressureCondensate line sizing, slope, an supportsSecondary drains, float switches, an alarmsSanitary tie-ins, vents, an code complianceCondensate treatment an freeze protectionLesson 4Site preparation: clearances, structural supports, condensate routing, and access for maintenanceDescribe site preparation fi HVAC/R installations, including clearances, structural supports, penetrations, condensate routing, an maintenance access, ensuring safe, durable, an serviceable systems dat meet project requirements.
Surveying site constraints an obstructionsPlanning equipment clearances an pathwaysStructural supports, pads, an roof curbsWall, roof, an sleeve penetrations sealingCondensate routing an freeze protectionService access, lighting, an work platformsLesson 5Outdoor units, condensing units, and rack equipment placement, vibration isolation, and line-of-sight considerationsExplain best practices fi locating outdoor units, condensers, an racks, addressing airflow, noise, vibration isolation, structural support, an service access, while respecting clearances, codes, an line-of-sight requirements.
Clearances fi airflow, service, an safetyRoof, pad, an wall mounting considerationsVibration isolators, inertia bases, an pipingNoise control an neighbor impact mitigationWeather, sun, snow, an debris protectionLine-of-sight, security, an equipment labelingLesson 6Indoor unit and evaporator installation steps for comfort HVAC and display casesProvide step-by-step procedures fi installing indoor units an evaporators in comfort HVAC an display cases, including mounting, airflow, piping stubs, traps, an service access to ensure efficient, quiet, an maintainable operation.
Locating indoor units fi airflow an serviceHanging, leveling, an supporting evaporator coilsConnecting refrigerant lines an suction trapsThermal expansion valve an distributor setupAirflow checks, filters, an coil clearancesStart-up inspection an documentation pointsLesson 7Electrical connections: service sizing, disconnects, circuit protection, grounding, and control powerDetail proper electrical service sizing, disconnect placement, circuit protection, grounding, an control power wiring fi HVAC/R systems, focusing pon code compliance, safe terminations, labeling, an verification before energizing equipment.
Reading nameplates an calculating load currentsSelecting wire size, insulation, an conduitOvercurrent protection an short-circuit ratingsEquipment grounding an bonding practicesControl transformers an low-voltage circuitsLabeling, torqueing, an testing terminationsLesson 8Tools, test instruments, and PPE: manifold gauges, micron vacuum pump, leak detectors, thermometer/hygrometers, clamp meters, brazing tools, refrigerant scales, recovery machines, safety gearCover selection, setup, an safe use of core HVAC/R tools, test instruments, an PPE, including calibration, maintenance, an field techniques dat ensure accurate measurements, efficient installation, an technician protection pon every job.
Manifold gauge types an proper hose handlingUsing micron gauges an vacuum pumps correctlyElectronic an bubble leak detection methodsClamp meters an temperature measurement basicsBrazing tools, nitrogen purge, an safetyRefrigerant scales, recovery units, an PPE useLesson 9Key safety precautions: refrigerant handling rules, electrical lockout/tagout, confined-space considerations, and chemical exposure controlExplain critical safety practices fi refrigerant handling, electrical work, confined spaces, an chemical exposure, emphasizing regulatory compliance, risk assessment, an procedures dat prevent injury, property damage, an environmental harm.
Refrigerant handling, labeling, an cylinder storageAvoiding frostbite, asphyxiation, an eye injuriesLockout/tagout steps fi HVAC/R equipmentConfined-space entry permits an ventilationChemical exposure limits an SDS interpretationSpill response, first aid, an incident reporting
