Lesson 1Venting, combustion air and condensate handling: atmospheric vs power venting, direct-vent vs B-vent, condensate trap and drain for condensing unitsExplains venting choices for gas water heaters, covering atmospheric and power vent setups, direct-vent and B-vent arrangements, and proper condensate trapping, neutralising, and draining for efficient condensing models.
Atmospheric versus power vent conceptsDirect-vent and B-vent configurationSizing and routing vent pipingProviding adequate combustion airCondensate trap and drain installationLesson 2Commissioning steps: filling and purging air, leak tests (water and gas), setting thermostats and temperature verification, TPR valve functional test, combustion analysis basics for gas unitsDetails the complete startup process, including filling and air removal, water and gas leak checks, thermostat adjustment, temp confirmation, TPR valve tests, and simple combustion checks for gas-fired heaters.
Filling system and purging trapped airWater and gas leak testing proceduresSetting thermostats and limit controlsVerifying outlet temperature and mixingTPR valve functional test procedureBasic combustion analysis for gas unitsLesson 3Valves and safety device installation: isolation valves, union/flare provisions, TPR valve orientation and discharge piping, expansion tanks and check valvesCovers picking and placing isolation valves, unions, TPR valves, expansion tanks, and check valves, focusing on positioning, support, discharge paths, and code-based guards against excess pressure and backflow.
Locating cold and hot isolation valvesInstalling unions and flare connectionsTPR valve orientation and discharge routingExpansion tank sizing and placementCheck valve selection and backflow controlLesson 4Gas connection basics for plumbers: union, shutoff valve placement, leak testing methods (soapy solution, gas detector), and coordinating with gas supplier/licensed installersIntroduces plumbers to secure gas linking methods, including unions, shutoff valve spots, approved leak tests, records, and partnering with gas providers or certified fitters as per local rules.
Locating appliance shutoff valvesInstalling unions for service accessSoapy solution leak testing methodUsing electronic gas leak detectorsCoordinating with gas supplier or fitterLesson 5Electrical interface and coordination: disconnects, dedicated circuit needs, verifying electrician work, and verifying bonding/groundingAddresses electrical needs for water heaters, like disconnects, dedicated lines, checking electrician tasks, bonding and grounding verification, and ensuring controls and safety gear get proper power.
Identifying required circuit capacityLocating and labelling disconnectsVerifying electrician rough-in workChecking bonding and grounding pathsConfirming control and sensor powerLesson 6Pre-installation preparation: permits, site checks, service isolation sequence, and required tools/materials checklistMaps out pre-install duties like permit checks, site reviews, clearance verifications, service isolation planning, and compiling full tools and materials lists to dodge hold-ups and safety worries.
Confirming permits and documentationAssessing site access and clearancesVerifying water, gas and power availabilityPlanning safe service isolation sequenceTools and materials checklist preparationLesson 7Cold/hot plumbing work: pipe material choices (copper, PEX, CSST considerations), basic sizing tables, branching to two bathrooms, kitchen, laundry, and recirculation optionsExamines hot and cold plumbing designs for water heaters, covering pipe material picks, basic sizing guides, routing to bathrooms, kitchen and laundry, and recirculation loop choices for faster hot water reach.
Selecting copper, PEX or other materialsUsing basic pipe sizing tables safelyBranching to bathrooms and kitchen loadsSupplying laundry and auxiliary fixturesDesigning simple recirculation loopsLesson 8Documentation and handover: labelling, as-built notes, safety stickers, and owner-operational guidance sheetExplains creating clear, rule-compliant records at finish, with precise as-built notes, lasting labels, safety/warning stickers, and a handy owner guide for operation and upkeep to ensure safe ongoing use.
Creating clear as-built system schematicsLabelling valves, circuits and isolation pointsApplying safety, warning and hazard stickersPreparing owner operation and maintenance sheetRecording serial numbers and warranty dataLesson 9Safe removal of an old gas storage heater: depressurising gas, draining tank, disconnecting utilities, handling and disposal of corroded equipmentOutlines secure steps for taking out an old gas storage heater, including gas depressurising, tank draining, utility disconnections, corrosion handling, and proper transport and disposal arrangements.
Shutting down and isolating the heaterDepressurising and capping gas linesDraining and flushing the storage tankDisconnecting water and electrical feedsHandling corroded or damaged componentsTransport and disposal requirements
