The Copper Connection Podcast — Plumbing & Building Services Engineering

Half seven on a February morning, you're stood in somebody's airing cupboard and the customer says the line everyone says: "it's got them panels on the roof, but the water's still cold." Is that system broken, or is it working exactly as designed and nobody ever explained it? This episode covers the operating principles of solar thermal hot water for Unit 314, Environmental technology systems, Phase 3 of the 9289 Plumbing and Domestic Heating apprenticeship (ST0303), Learning Outcome 2 / AC2.1. Chris Bailey also shares some big news — The Copper Connection Podcast has been shortlisted as a finalist at the 2026 Independent Podcast Awards in the Best Children and Young Adults category. Then it's straight into the kit: the five key components as a journey rather than a list — roof, brain, muscle, store, backup. Flat plate against evacuated tube and the exam-ready comparison. The differential temperature controller and why a pump sat still is not a pump that's failed. Glycol, freeze protection and why the manufacturer's percentage dilution decides whether the system performs. And the twin-coil cylinder detail that gets marks: lower coil solar, higher coil auxiliary. You will learn to: Name the five key components of a solar thermal hot water system and place them in the loop Compare flat plate and evacuated tube collectors on cost and efficiency Explain how a vacuum improves collector efficiency and how the heat exchanger phial and header tube work Describe how the DTC uses collector and cylinder sensors to activate and deactivate the pump Explain why the heat transfer fluid contains glycol and why dilution percentage affects performance Identify which cylinder coil serves the solar system and which serves the auxiliary heat source Explain why solar thermal in the UK is a pre-heat system needing an auxiliary heat source Links referenced: Solar water heating (Worcester Bosch) https://www.youtube.com/watch?v=bhbOVqixsAw • Charging a closed loop solar water heating system https://www.youtube.com/watch?v=_geY-eKvBI8 • Fernox Solar S1 20 Litre dilution instructions https://fernox.com/product/solar-s1-20-litre/ Get label the components and water flow on the system diagram, and research the regulations affecting whether a solar thermal system can be installed at all — that's where we pick up next time. solar thermal hot water, unit 314 environmental technology systems, differential temperature controller, evacuated tube vs flat plate collectors, 9289 apprenticeship ST0303 phase 3 thecopperconnectionpodcast.co.uk Hosted on Acast. See acast.com/privacy for more information.

Four identical houses on one street: one on mains gas, one on LPG, one on oil and coal, one with panels on the roof and a heat pump out the back. Between them you have nearly every energy source in Unit 314 — and your job is knowing which is which, and why it matters. This episode covers sources of renewable and non-renewable energy for Unit 314 of the 9289 Level 3 Diploma, Phase 3, Learning Outcome 1 (AC1.1–1.3). Chris Bailey sets out the two reasons we move toward renewables — emissions and depletion — then works the four non-renewable headings (oils, gases, solid fuels, and electricity generated from non-renewable sources), before tackling the distinction that catches most learners out: low-carbon producers versus zero-carbon producers. He then walks every technology one by one — solar thermal, solar PV, wind, tidal and river hydro, geothermal heat pumps, biomass and green hydrogen — and finishes by deriving all ten worksheet answers from first principles, naming the two traps that lose marks. You will learn to: Define non-renewable energy as finite, and renewable energy as sources that do not run out List the four headings of non-renewable energy, including electricity from non-renewable generation Explain why electricity is a carrier, not a source Distinguish low-carbon producers from zero-carbon producers Separate solar thermal (heat for hot water) from solar photovoltaic (DC converted to AC) Explain how wind, tidal barrages, tidal stream, river and dam hydro generate electricity Define a heat pump as moving heat from a low- to high-temperature reservoir via the refrigeration cycle State the condition that makes hydrogen renewable — green hydrogen via electrolysis Sort ten appliances into low-carbon and high-carbon producers Also in this episode: The Copper Connection Podcast has been shortlisted as a finalist at the 2026 Independent Podcast Awards in the Best Children and Young Adults category. Homework: keep your eyes open for solar thermal systems locally — hot water, not PV — and bring a picture in, because the next session builds directly on solar thermal. renewable and non-renewable energy, unit 314 environmental technology systems, low-carbon and zero-carbon producers, solar thermal vs solar pv, 9289 level 3 diploma phase 3 thecopperconnectionpodcast.co.uk Hosted on Acast. See acast.com/privacy for more information.

A macerator that keeps cycling on its own, a basin that loses its trap seal every time it's used, a WC flush that sends water bubbling up through the bath next door — these are the calls that separate a plumber who guesses from one who diagnoses. In this episode of The Copper Connection Podcast, Chris Bailey covers Learning Outcome 4 of Unit 311 for the Level 3 Diploma in Plumbing and Domestic Heating (City & Guilds 6035 / SmartScreen Unit 311): fault diagnosis and rectification on sanitary appliances and pipework. This episode supports AC 4.1, 4.2 and 4.3: • AC 4.1: Methods of diagnosing sanitary appliance and pipework faults • AC 4.2: Diagnostic checks for a range of common faults • AC 4.3: Repair and rectification procedures for those faults You will learn to: • Use the three real diagnostic tools — the customer's own account, manufacturer fault-finding charts, and the governing standards (Approved Document Part H and BS EN 12058) • Apply the seven-step process every time: diagnose, notify, isolate, decommission, rectify, re-commission, handover • Diagnose and clear blockages the right way — trap first, mechanical clearing second, chemicals only as a last resort • Identify and name all seven causes of trap seal loss: leak, evaporation, wavering out, self-siphonage, induced siphonage, compression and momentum • Recognise faults caused by poor installation — drooping pipework, warped stacks with no allowance for expansion, and cross-flow between a WC and an adjacent bath • Diagnose and rectify faults on macerators, waste lifters, sink waste-disposal units, air admittance valves and condensate pipes • Understand why regular maintenance — and a good handover conversation — prevents most of these faults from coming back This is the direct follow-on from the central heating fault-finding episode, moving from the heating side of the trade to the wet side — same discipline, same seven steps, different appliances. Follow The Copper Connection Podcast for practical, exam-focused support for plumbing, heating and building-services learners. https://thecopperconnectionpodcast.co.uk/ Hosted on Acast. See acast.com/privacy for more information.

Radiators warm at the top and freezing at the bottom, a boiler that ticks but never quite delivers, a drip the customer says has always been there. Where do you actually start? This episode covers fault diagnosis and rectification on central heating systems and components for Unit 311 of the Level 3 Diploma in Plumbing and Domestic Heating, Phase 3, Learning Outcome 3. Chris Bailey covers the general inspection every older system needs before a component is touched, the three diagnostic tools — fault-finding flow charts, fault-finding grids and manufacturer instructions — and the seven-stage fault rectification process every job should follow. He then works through twenty common faults by symptom, cause and action, from pumping over and persistent venting through to motorised valve failure and pump failure, before applying it all to six worksheet-style exam scenarios. You will learn to: Carry out a general inspection on an older central heating system Apply fault-finding flow charts and fault-finding grids to narrow down a fault Use manufacturer instructions correctly before working on a boiler Apply the seven-stage rectification process: diagnose, notify, isolate, decommission, rectify, re-commission, handover Diagnose common central heating faults by symptom, cause and action Explain the effects of magnetite on a central heating system Grab your Unit 311 Worksheet 3 and work through the six fault-finding scenarios before the next session. central heating fault diagnosis, seven-stage rectification process, unit 311 phase 3, level 3 diploma in plumbing and domestic heating, magnetite and system faults Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 89, Unit 307 Water Treatment Explained | Level 3 Diploma & 9289 Phase 2 Plumbing Revision Podcast Fit the wrong water treatment kit in a hard water area and the customer's boiler is furred up by year five even if every joint you made was perfect. This episode clears up the single biggest source of confusion in Unit 307 (Level 3 Diploma, and 9289 Phase 2 for apprenticeship / ST0303 apprenticeship learners): the difference between water conditioners, water softeners and drinking water filters, and which one belongs where on a domestic cold water system. Chris Bailey walks through the chemistry of temporary hard water and limescale precipitation at 65°C, then breaks down all three magnetic, electrolytic and electronic conditioners, base-exchange softeners with the mandatory unsoftened kitchen tap rule, and every one of the six drinking water filter types your assessor will ask you to name. It's a proper UK plumbing revision session tying water treatment back into cold water systems, WRAS-approved storage cisterns and the Water Supply Regulations 1999 exactly the shared ground between the Level 3 Diploma and 9289 domestic plumbing and heating. What you'll learn: Understand why calcium carbonate precipitates as limescale at 65°C and what it does to appliances Explain how magnetic, electrolytic and electronic conditioners change calcium behaviour without removing it Identify where each conditioner type is fitted (appliance-specific vs whole-house) Explain base exchange in a water softener and the drop from 350 mg/l down to under 10 mg/l Apply the unsoftened kitchen draw-off rule for wholesome drinking water Identify all six drinking water filter forms: activated carbon, ion exchange, sediment, reverse osmosis, distillation, disinfection Match a customer complaint to the correct filter on site Tie water treatment back into cold water storage cistern requirements and the Water Supply Regulations 1999 Grab your Unit 307 handout on domestic water treatment equipment and test yourself on naming the six filter types and their uses before your next assessment. 9289 phase 2 plumbing revision podcast cold water systems mastering plumbing theory level 3 construction qualifications uk construction theory water treatment educational resources for plumbing cold water systems in plumbing Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 88, 9289 Phase 2 Unit 303: Energy, Heat & Power Explained Electrical and Scientific Principles. Ever had a customer say "the tank's warm, so why's there no hot water?" This episode is the answer and it's the whole of Unit 303 Scientific Principles, Learning Outcome 3, AC 3.6, wrapped up in one worked example. Part 4 of Session 3 on the 9289 Phase 2 domestic plumbing and heating apprenticeship (ST0303), also directly relevant to the City and Guilds Level 3 plumbing Unit 303. hot water systems masterclass. Chris walks through why heat and temperature are two different things, refreshes the joule and the Specific Heat Capacity of water (4.18 kJ/kg/°C), and shows the bridge between the plumbing world and the physics world one cubic metre of water equals 1,000 litres equals 1,000 kilograms. Then a full worked cylinder example: 0.5 m diameter, 0.9 m tall, cold in at 10°C, stored at 60°C. You'll finish knowing exactly how to calculate the heat energy required and the immersion power needed to deliver it in one hour and why a standard 3 kW element takes three-plus hours to recover a 180-litre tank. What you'll learn: Distinguish between heat (quantity) and temperature (intensity) Recall the Specific Heat Capacity of water and why 4.18 matters Convert cylinder volume from cubic metres to litres to kilograms Calculate quantity of heat using mass × Δt × 4.18 Calculate power in kW using kJ ÷ 3,600 Apply the 60–65°C hot water storage rule on site Explain to a customer why their immersion recovery time is what it is Grab your Unit 303 handout and Worksheet 6, run the same cylinder numbers on paper, then try it again with a 210-litre tank and a winter cold-mains temperature of 6°C. 9289 domestic plumbing and heating electrical and scientific principles specific heat capacity hot water systems masterclass revision tips for plumbing students masterclass in plumbing education plumbing qualifications guide plumbing revision guide mastering plumbing qualifications technical qualifications uk plumbing apprentices hot water safety passing your exams hot water systems construction theory podcast 9289 phase 2 Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 87, The Two Minutes That Matter Most, Responding to Accidents on Site Unit 301 Health and Safety in Plumbing. You shout through to your mate under the sink and get nothing back. Solvent cement tin still open beside him. Head down. Not moving. What you do in the next sixty seconds actually matters. In this episode of The Copper Connection Podcast, Chris Bailey covers Session 5 of the Unit 301 deep-dive Health and Safety Systems & The Two Minutes That Matter Most, Responding to Accidents on Site Unit 301 Health and Safety in Plumbing working through LO4: know and understand how to respond to accidents. This supports the City & Guilds Level 3 Diploma in Plumbing and Domestic Heating and Phase 1 of the 9289 apprenticeship (ST0303), so it applies whichever route brought you here. Chris covers: • What an accident actually is — unforeseen, unplanned, uncontrolled and the wider emergencies you need to recognise, from fire and collapse to gas leaks, chemical spillage and electrocution • The moment of discovery: raising the alarm, dialling 999, and giving the operator the nature of the incident, the location and the site entry points • Why you send a colleague to the site entrance — and why three lost minutes can change an outcome • Staying with the casualty, getting a first aider to attend, and informing next of kin • The fire drill: sound the alarm, call 999, evacuate, assemble • First-aid provision — why there are no medicines in a first-aid box, what makes a first aider a competent person, the appointed person, and the first aider's three core duties • The calm six-step sequence when you find someone injured: make yourself safe, make the area safe, administer first aid, contact emergency services, contact the first aider, contact the supervisor • Minor injuries — burrs on copper tube, solder burns, dust and fume irritants — including the ten minutes of cold running water that most people rush • Fumes from solvent welding: remove, ventilate, recovery position, CPR • Major injuries — simple and compound fractures, unconsciousness, electric shock, toxic poisoning, asphyxiation and concussion, including the twenty-four hour watch • The paperwork that protects you — the accident book, exactly what goes in it, witness statements, and RIDDOR • Who investigates an accident and what each role on site actually does For your exam you need to state the requirements for first-aid provision, describe the actions to take on discovering an accident or emergency, identify the procedures for minor and major injuries, and state the recording procedures for accidents and near misses. Work through Worksheet 6 alongside the HSE's first-aid-at-work leaflet, and watch the recovery position and CPR clips more than once. health and safety in plumbing educational resources for plumbing masterclass in plumbing education plumbing apprentices 9289 domestic plumbing and heating construction theory construction education health and safety exam preparation 9289 phase 1 technical qualifications in construction the copper connection podcast plumbing revision podcast level 2 construction qualifications level 2 plumbing exam preparation technical skills in construction Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 86, Why Copper Wins Every Race, Heat Transfer, Energy and Expansion, 9289 Phase 2 Unit 303. Three pipes in a vice, copper, low-carbon steel, stainless, one blowlamp, one flame. Copper doesn't just win, it isn't even the same event. This episode explains exactly why. In this episode of The Copper Connection Podcast, Chris Bailey continues Unit 303 of the 9289 apprenticeship (ST0303), 9289 Phase 2, covering AC3.4 and AC3.5 — the three methods of heat transfer, and how the units of energy, heat and power actually relate to each other. Chris works through conduction and the coefficient of thermal conductivity (copper at 385 W/mK against expanded polystyrene at 0.03), U values and the area × U value × temperature difference heat loss formula with a full worked cavity wall example, convection and why a hot water cylinder circulates without a pump, radiation and why a patio heater warms you but not the air, where the Joule and the watt come from, specific heat capacity and why water was chosen as the heat transfer medium, and linear expansion including why a 25 metre steel steam pipe moves over 31 millimetres once steam is flowing. You will learn to: Explain conduction, convection and radiation, and the hot-goes-to-cold rule underneath all three Rank common materials by coefficient of thermal conductivity in W/mK Calculate heat loss through a structure using area, U value and temperature difference Explain how a hot water cylinder heats by convection, and why density drives it Explain why radiation heats objects but not the air it travels through Derive the Joule from force and distance, and the watt as Joules per second Convert between watts and BTU per hour on older equipment specifications Apply specific heat capacity values for water, ice, kerosene and propylene glycol Calculate linear expansion for copper, steel and PVC pipework using the coefficient formula Work through Worksheet 4 on U values and the expansion calculations before the next Unit 303 session. heat transfer, specific heat capacity, linear expansion, unit 303 phase 2, 9289 apprenticeship, ST0303 www.thecopperconnectionpodcast.co.uk 9289 phase 2 electrical and scientific principles construction exam preparation construction theory podcast construction education uk construction education 9289 domestic plumbing and heating plumbing masterclass in construction theory uk construction theory plumbing apprentices level 3 construction qualifications building services engineering technical qualifications uk uk plumbing exams plumbing study resources revision tips for plumbing students masterclass in plumbing level 2 plumbing masterclass technical qualifications in construction Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 85, The Cistern in the Loft Understanding Fault Diagnosis on Cold Water Systems, 9289 Phase 3 Plumbing Apprentices Unit 311. A split cold water cistern in a loft can pour through a kitchen ceiling for hours before anyone notices and the fix depends entirely on getting the isolation sequence right first. In this episode of The Copper Connection Podcast, Chris Bailey opens Unit 311 of the 9289 apprenticeship (ST0303), 9289 Phase 3, Learning Outcome 1, moving from commissioning into fault diagnosis and rectification on cold water systems and components. Chris covers why cold water systems need ongoing maintenance, the three-step diagnostic habit, listening to the customer, using manufacturer fault charts, checking service history the six bye-law 30 kit components every loft cistern should have, and the seven-step process diagnose, notify, isolate, decommission, rectify, re-commission, handover that every repair follows. The episode closes with a symptom-cause-action run through of a dozen real cold water faults, from pressure and flow problems to cistern failure, underground main leaks, and worn tap washers. You will learn to: Explain why routine maintenance matters for cold water systems Apply the three-step diagnostic approach for any cold water fault Identify the six bye-law 30 kit components required in a loft cistern Apply the seven-step fault rectification sequence to any repair Diagnose common cold water faults by symptom, cause and action Grab your Worksheet 1 on fault-finding before the next session moves on to hot water fault diagnosis. 9289 phase 3 revision strategies for construction construction theory podcast construction education 9289 domestic plumbing and heating plumbing bse systems plumbing apprentices building services engineering mastering plumbing theory uk plumbing exams cold water systems in plumbing cold water systems level 2 plumbing masterclass level 3 construction qualifications Hosted on Acast. See acast.com/privacy for more information.

An unvented cylinder can be fitted perfectly, look fine, and still fail three weeks later if it was never actually pressure tested. In this episode of The Copper Connection Podcast, Chris Bailey opens Unit 310 of the 9289 apprenticeship (ST0303), Phase 3, Learning Outcome 2, moving commissioning and handover thinking from cold water systems across to hot water systems. This is Part 1 of a two-part hot water systems masterclass, covering the difference between open-vented and unvented systems, the full nine-step commissioning procedure, and steps two to four in detail: the visual inspection, filling and venting, and the soundness test. Chris breaks down where the 1.5-times test pressure figure in the Water Supply (Water Fittings) Regulations 1999 comes from, and how BS EN 806 can push that figure even higher — working through the bar-pressure calculations examiners expect for hot water safety and plumbing exam preparation. You will learn to: Understand the difference between open-vented and unvented hot water systems Explain the full nine-step commissioning procedure for hot water systems and components Identify the ten checks carried out during the visual inspection stage Apply the correct filling and venting sequence for open-vented and unvented systems Calculate the statutory soundness test pressure under the Water Fittings Regulations Compare that figure with the BS EN 806 commissioning test pressure calculation Explain the WRAS G12.2 and R12.2 requirements for testing rigid pipework Identify the Test A and Test B procedures for plastic pipework under BS EN 806 Part 2 Grab your Unit 310 notes and work the bar-pressure calculation yourself before Part 2 lands with steps five through nine. soundness testing, hot water systems, unit 310 phase 3, 9289 apprenticeship, ST0303 Hosted on Acast. See acast.com/privacy for more information.

Why can a pressurised hot-water system become so dangerous when pressure is suddenly released? In this episode of The Copper Connection Podcast, Chris Bailey explains the scientific principles behind temperature, heat and change of state for plumbing and heating apprentices. Covering Unit 303, Phase 2, Session 2, this episode supports the 9289 Plumbing and Domestic Heating Technician apprenticeship and helps learners prepare for the Scientific Principles assessment criteria: • AC 3.1: The relationship between Celsius and Kelvin temperature scales • AC 3.2: The principles associated with changes of state • AC 3.3: Sensible heat and latent heat in liquids and gases You will learn: • How to convert between Celsius and Kelvin • What ΔT means in heating and heat-loss calculations • How solids, liquids and gases change state through melting, evaporation, condensation and freezing • Why water expands when heated, freezes, and turns to steam • Why frozen water can split pipework • How pressure changes the boiling point of water • Why unvented cylinders, sealed systems, pressure-relief valves and safety cut-outs must be treated with respect • The crucial difference between sensible heat and latent heat • Why superheated water can flash rapidly into steam when pressure is released This is not abstract science for the sake of an exam. It is the knowledge behind the safety procedures, system design and commissioning decisions you will encounter throughout your plumbing and heating career. Follow The Copper Connection Podcast for practical, exam-focused support for plumbing, heating and building-services learners. Hosted on Acast. See acast.com/privacy for more information.

EPA reforms are generating plenty of confusion across plumbing and building services education, but what has actually changed for current learners? In this episode, Chris Bailey breaks down the move from End-Point Assessment (EPA) to Apprenticeship Assessment and explains what it means in practice for: City & Guilds 9289 Level 3 Plumbing and Domestic Heating Technician apprentices City & Guilds Level 2 Plumbing learners T-Level Building Services Engineering students Tutors, assessors and employers supporting apprentices You will learn why the current ST0303 assessment model remains unchanged for existing plumbing apprentices, what the January 2026 9289 v1.2 update really means, and why T-Level BSE assessments are not affected by apprenticeship EPA reforms. Chris also tackles five common misconceptions, including whether assessments are moving earlier, whether colleges will now mark EPA work, and whether learners need to revise different content. For the free tutor resource pack and the EPA Change Navigator chatbot, visit: https://thecopperconnectionpodcast.co.uk/epa-changes Hosted on Acast. See acast.com/privacy for more information.

Struggling to connect Unit 303 "Electrical and Scientific Principles – Units of Measurement" with what you actually do on site? In this Phase 1 Unit 303 episode of The Copper Connection Podcast, Chris Bailey turns SI units and derived units into practical tools for UK plumbing and building services students. You'll start with the seven base SI units – metre, kilogram, second, ampere, kelvin, candela and mole – and see which ones matter most in everyday plumbing tasks. Then we dive into temperature (Celsius vs Kelvin), pressure and head (pascal, kilopascals, bar and static head), and capacity in litres and cubic metres. From there, we break down key derived units: area in m², volume in m³, velocity in m/s, and density in kg/m³, including water's expansion and why pipes can burst when it freezes. We'll also tackle the non-SI units you still meet on UK sites: imperial length and weight, old gas meters in cubic feet per hour, and BSP pipe thread sizes that mix inches with metric diameters. Ideal for T-Level BSE, Level 2 and Level 3 plumbing learners and apprentices revising Unit 303, this episode helps you use units confidently in drawings, calculations and commissioning – and turns "science" into something that feels site-ready. 🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.uk Follow The Copper Connection on Acast, Spotify, Apple Podcasts and YouTube, and share this episode with a mate who hates science but loves tools. electrical and scientific principles, unit 303 9289, 9289 phase 1 science, SI units plumbing, plumbing apprentice science revision, t level bse revision, city and guilds level 3 plumbing, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast Hosted on Acast. See acast.com/privacy for more information.

Revising Unit 304 “Planning and Supervision” and still not sure who actually runs a job, who signs work off, or who can shut it down when it’s unsafe? In this Phase 1 episode of The Copper Connection Podcast , host Chris Bailey maps out the full construction team and key site visitors so T‑Level BSE and plumbing learners can finally see the bigger picture. You’ll walk through a realistic UK building project step‑by‑step – from the client and architect , through the project manager , clerk of works and quantity surveyor , down to the main contractor , site management team, trade supervisors and craft operatives. Then we introduce the inspectors and visitors who focus on safety and compliance: building control , water inspectors , health and safety inspectors and electrical services inspectors , plus delivery drivers and members of the public on or near site. Perfect for T‑Level Building Services Engineering , Level 2 and Level 3 plumbing students, and UK apprentices revising construction team roles and responsibilities for Unit 304, this episode turns your handouts into a story you can remember and use in exam answers and on site. Follow The Copper Connection on Acast, Spotify, Apple Podcasts and YouTube, and share this episode with a course‑mate or fellow apprentice who needs to tighten up their planning and supervision knowledge before assessment. Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 79, Sign Your Name to It — Commissioning and Handover of Cold Water Systems | Unit 310 Phase 3. There's a moment at the end of every job where the customer looks at you, not the boiler — because they're about to trust something you built. That's what commissioning is really about. In this episode, host Chris Bailey covers Unit 310 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating — Phase 3, Session 1: commissioning and handover of cold water systems, steps 2 through 5. Chris covers: ✅ The full 11-step commissioning procedure, in order, and why the sequence matters ✅ The visual inspection checklist — open ends, connections, supports, valves, cisterns, FOVs ✅ Marking and labelling pipework — and the Category 5 water rule for rainwater harvesting and greywater reuse ✅ Filling and venting at normal operating pressure ✅ The soundness test explained in full — Water Regulations 1.5 × MOP, WRAS G12.2 and R12.2 ✅ The BS EN 806 calculation cleared up: MDP = 1.5 × MOP, test pressure = 1.1 × MDP = 1.65 × MOP ✅ The full metallic pipe test procedure — 90 minutes total, zero pressure drop allowed ✅ Test A and Test B for plastic pipework — the exact figures you need ✅ Full Worksheet 1 walkthrough with the worked pressure calculation This episode is essential listening for: — Plumbing apprentices on the ST0303 Level 3 standard working through Phase 3 — T-Level Building Services Engineering learners — Anyone preparing for the 9289 Phase 3 practical assessment and portfolio evidence 🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.uk Next episode: Unit 310 Phase 3 Session 2 — Flushing, disinfection, operational checks, documentation and handover. commissioning cold water systems, BS EN 806 explained, soundness test water regulations, WRAS guidance testing, plastic pipe test A test B, unit 310 9289, plumbing apprentice phase 3, city and guilds level 3 plumbing, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast, rainwater harvesting category 5 water 9289 phase 3 commissioning and handover 9289 domestic plumbing and heating cold water systems cold water systems in plumbing uk construction theory study tips for construction students mastering plumbing theory building services engineering educational resources for plumbing masterclass in plumbing plumbing apprentices plumbing revision guide plumbing study resources technical skills in construction Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 78, Fill It, Test It, Flush It, Soundness Testing Central Heating Systems the Right Way Unit 309 9289 Phase 3 Ever watched a customer's face when the pressure gauge holds steady after a two-hour soundness test? That's the moment the job goes from "nearly finished" to "properly done." In this episode, host Chris Bailey covers Unit 309 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating Phase 3, Session 1: filling, venting, soundness testing, flushing, and chemically treating central heating systems. Chris covers: ✅ The seven information sources you need before touching a system — Water Regs 1999, Building Regs Part G and L, BS EN 806, BS 8558, BS EN 12828, BS EN 14336 ✅ Notifying the relevant person and the pre-fill visual inspection ✅ Staged filling, bleeding technique, and why overfilling triggers the pressure relief valve ✅ The BS EN 14336 soundness test standard — 30% above working pressure, minimum two hours ✅ The full 8-step preparation procedure and hydraulic testing method ✅ Cold flush, hot flush and power flush — what each one does and when to use it ✅ System additives: cleanser, descaler and inhibitor — dosing, application, and why magnetite sludge is the number one cause of premature boiler failure ✅ Full Worksheet 1 answers, including the filling loop procedure and sludge impact question This episode is essential listening for: — Plumbing apprentices on the ST0303 Level 3 standard working through Phase 3 — T-Level Building Services Engineering learners — Anyone preparing for the 9289 Phase 3 practical assessment or portfolio work 🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.uk Next episode: Unit 310 Phase 3 — Commissioning and handover of central heating systems. soundness testing central heating, BS EN 14336, central heating inhibitor, power flush explained, cold flush hot flush, magnetite sludge boiler, unit 309 9289, plumbing apprentice phase 3, city and guilds level 3 plumbing, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast, Fernox Sentinel inhibitor dosing central heating systems 9289 phase 3 9289 domestic plumbing and heating soundness testing central heating systems guide central heating principles uk plumbing revision technical qualifications uk student resources for plumbing 5 pillar process bse systems building services engineering masterclass in plumbing education uk plumbing revision tips Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 77, Gas, Pressure & Why Your Boiler Does What It Does — Scientific Principles for Plumbing Apprentices Unit 303 Phase 2. Ever watched the pressure gauge on a sealed heating system climb as the boiler fires up — and wondered why? That's not a fault. That's science. And once you understand it, you stop guessing and start knowing. In this episode, host Chris Bailey takes you through the complete properties of gases content for Unit 303 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating — AC2.7 and the gas laws — in plain English, with real trade context throughout. This is Session 1 of the Phase 2 Unit 303 Scientific Principles series, and it covers the six principal gases you'll work with in building services — plus the two gas laws every plumbing and heating engineer needs to understand. Chris covers: ✅ Air — composition (78% nitrogen, 20.9% oxygen), uses in building services including combustion, pressure testing, and expansion vessels ✅ Steam — the pressure/boiling point relationship, why water flashes to steam at 1,600x its volume, and the safety implications for unvented systems ✅ Natural gas — constituents, methane CH4 at 90%, calorific value, relative density 0.58 (lighter than air — rises), flammable limits 5–15%, LEL and HEL ✅ LPG — butane vs propane, calorific values, relative density 1.5 (heavier than air — SINKS), flammable limits, why LPG installation differs from natural gas ✅ Carbon dioxide — pipe freezing kits, fire extinguishers, CO vs CO2 combustion ✅ Refrigerant gases — the vapour compression refrigeration cycle and how heat pumps work ✅ Charles's Law — volume and temperature at constant pressure, Kelvin scale, gas tightness testing temperature stabilisation ✅ Boyle's Law — inverse pressure-volume relationship, expansion vessel calculations ✅ Pressure units — Pa, bar, mbar, kPa, and when you use each one on site This episode is essential listening for: — Plumbing apprentices on the ST0303 Level 3 standard working through Phase 2 — T-Level Building Services Engineering learners (Year 1 and Year 2) — Anyone sitting the 9289 Phase 2 exam who finds the science sessions challenging — Learners working through Unit 303 AC2.7 and AC4 content The science explains the trade. This episode makes it click. 🔗 Handouts, worksheets, and revision resources at thecopperconnectionpodcast.co.uk Next episode: Unit 303 Phase 2 Session 2 — Energy, heat and power. Latent heat, sensible heat, change of state, and why condensing boilers are more efficient than conventional ones. properties of gases plumbing, Boyle's Law plumbing, Charles's Law explained, natural gas properties, LPG vs natural gas, relative density gas, calorific value natural gas, unit 303 scientific principles, 9289 phase 2 science, plumbing apprentice science revision, refrigerant gases heat pump, vapour compression cycle, steam properties plumbing, gas tightness testing temperature, pressure units bar pascal, city and guilds level 3 plumbing, ST0303 apprenticeship science, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast scientific principles electrical and scientific principles 9289 phase 2 9289 domestic plumbing and heating technical skills in construction technical qualifications uk student resources for plumbing plumbing revision masterclass plumbing exam tips level 3 construction qualifications bse systems plumbing revision podcast pressure gas plumbing apprentices Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 76, Water In, Waste Out — Cold Water Systems & Sanitary Appliances for Plumbing Apprentices | Unit 307 Phase 2 Phase 2 of your plumbing apprenticeship is where theory meets real installations. And cold water systems are where a lot of learners either click — or come unstuck. In this episode, host Chris Bailey takes you through the complete cold water systems and sanitary appliances content for Unit 307 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating. This is Session 1 of the Unit 307 Phase 2 deep-dive — and it starts with a question every apprentice should be able to answer: what's the actual difference between a direct and indirect cold water system, and why does it change every installation decision you make? Chris covers: ✅ Direct cold water systems — how they work, pressure, pipe sizes, advantages and disadvantages ✅ Indirect cold water systems — CWSC capacity, pipe sizes (including the 22mm bath feed rule), pros and cons ✅ Hard water and water treatment — magnetic conditioners, water softeners, drinking water filters ✅ Sanitary appliance materials — vitreous china, acrylic, stainless steel, fireclay, cast iron, pressed steel ✅ Baths — all six types, BS 4304, AUK2 air gap, 22mm feeds, 40mm waste, combination waste fittings ✅ Shower trays and cubicles — wet rooms, unslotted waste, feed pipe sizing ✅ WCs — washdown, siphonic, close-coupled to wall-hung, flush volumes from 9L to today's 4/6L dual flush ✅ Urinals — bowl, trough, slab, sparge pipe, automatic flushing cisterns, waterless urinals, Water Regs volumes ✅ Bidets — over-rim vs ascending spray, the AUK2 air gap rule, why ascending spray MUST be cistern-fed ✅ Valves — stop valves, gate valves, FOVs (BS 1212 Parts 1–4), drain-off valves, spherical plug valves ✅ Building Regulations Part G — 125 litres per person per day, water efficiency calculations This episode is essential listening for: — Plumbing apprentices on the ST0303 Level 3 standard working through Phase 2 — Level 2 Plumbing students progressing to Level 3 — T-Level Building Services Engineering learners (Year 1 and Year 2) — Anyone revising for the 9289-021 Phase 2 multiple choice exam Plain English. Real trade context. No fluff. cold water systems plumbing, direct indirect cold water system, unit 307 9289, phase 2 plumbing apprentice, sanitary appliances plumbing, AUK2 air gap, bidet water regulations, WC flush volumes, urinal water regulations, bath installation plumbing, float operated valve BS 1212, water supply water fittings regulations, building regulations part G, city and guilds level 3 plumbing, 9289-021 exam revision, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast, plumbing revision UK unit 307 phase 2 9289 domestic plumbing and heating 9289 phase 2 cold water systems in plumbing cold water systems sanitary appliances plumbing revision sanitation sanitation and drainage masterclass sanitation and drainage exam prep exam preparation for plumbing uk plumbing exams uk plumbing revision technical qualifications uk plumbing study resources Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 75, The Law That Keeps You Alive — Health and Safety Legislation for Plumbing Apprentices | Unit 301 Session 1 Starting your plumbing apprenticeship? This is the episode you listen to first. Before you touch a tool, before you connect a fitting, before you walk onto any site, there is a legal framework that exists specifically to make sure you go home safe at the end of every working day. And if you don't understand it, you're not just putting yourself at risk. You're putting your colleagues, your customers, and the public at risk too. In this episode, host Chris Bailey takes you through the complete health and safety legislation content for Unit 301 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating, in plain English, with real trade context. Chris covers: Health and Safety Legislation for Plumbing Apprentices ✅ Why health and safety law exists — and why it's not just paperwork ✅ The Health and Safety at Work etc. Act 1974 (HASAWA) — the principal piece of UK workplace legislation, what it covers, and who it applies to ✅ Your legal duties as an employee under Section 7 of the HASAWA ✅ Your employer's duties under Section 2 — including the five-employee written policy rule ✅ COSHH — Control of Substances Hazardous to Health — and what those warning symbols on bottles actually mean ✅ CDM 2015 — Construction Design and Management Regulations — and the red, amber, green framework ✅ PPE Regulations, PUWER, Work at Height Regulations, Manual Handling Regulations ✅ The Control of Asbestos Regulations — and the one rule you must never break on site ✅ RIDDOR — what you must report, when, and to whom ✅ The difference between mandatory and advisory publications — Acts and Regulations vs ACOPs and HSE Guidance ✅ The role of the HSE — and what their inspectors can actually do to you and your employer ✅ Building services-specific legislation — Water Fittings Regulations, Gas Safety Regulations, BS 7671, CSCS cards, and competent persons This episode is essential listening for: — New plumbing apprentices on the ST0303 Level 3 standard — Level 2 Plumbing students progressing to Level 3 — T-Level Building Services Engineering learners (Year 1 Core) — Anyone sitting the 9289-001 standalone Health and Safety exam The Copper Connection is the UK podcast built for plumbing and building services learners — honest, practical, and always trade-focused. 🔗 Handouts, worksheets, and revision resources at thecopperconnectionpodcast.co.uk Next episode: Unit 301 Session 2 — Hazardous Situations, COSHH in Practice, and Asbestos on Site. health and safety legislation for plumbing apprentices technical qualifications in construction uk construction theory plumbing apprentices 9289 domestic plumbing and heating health and safety in plumbing health and safety exam tips health and safety exam preparation the copper connection podcast building services engineering plumbing Hosted on Acast. See acast.com/privacy for more information.

The Copper Connection Podcast – Season 2, Episode 74, Phase 3 Explore commissioning, handover and completion in building services engineering with practical insights and revision support. Phase 3 is the final core phase of the 9289 — and it's where the qualification asks the most of you. Not just in terms of content, but in terms of professional thinking. This is the phase that separates building services engineering fitters from technicians. In Episode 4 of The Copper Connection Podcast, host Chris Bailey walks through every unit assessed in Phase 3 of the 9289 — including the shorter but entirely new exam, the substantial 15-hour practical assignment, and the all-important Phases 1–3 Work Log submission that many learners underestimate until it's almost too late. Chris covers: ✅ The Phase 3 assessments — 9289-031 MCQ (30 minutes, 20 questions) and 9289-032 practical (15 hours), plus the 9289-002 Work Log submission ✅ Unit 314 Environmental Technology Systems — the unit that accounts for 40% of the Phase 3 exam, covering renewable and non-renewable energy sources, heat pump principles, micro-CHP, permitted development, and Building Regulations Part L ✅ Unit 315 Domestic Fuel Systems — combustion processes, complete vs incomplete combustion, CO poisoning and CO detectors, ventilation requirements, and chimney and flue system principles ✅ Unit 316 Electrical Work and Control Systems — your responsibilities and limitations as a plumber, BS 7671, Building Regulations Part P, and control system components ✅ The Phase 3 practical in full — commissioning and handover (Unit 310), fault diagnosis (Unit 311), service and maintenance (Unit 312), sizing and selection (Unit 313), and the electrical practical from Unit 316 ✅ How to approach sizing — from cold water pipe sizing to central heating heat loss calculations ✅ The Unit 317 Work Log — what your five areas of evidence need to include, and why you can't afford to leave it incomplete ✅ An honest word about what it takes to get to Phase 3 — and why it matters This is essential listening for anyone approaching their final core phase assessments. 🔗 Show notes, portfolio tips, and revision resources at thecopperconnectionpodcast.co.uk Coming next on The Copper Connection — Phase 4 specialist pathways, EPA preparation, and life after qualification. building services engineering plumbing apprentices 9289 domestic plumbing and heating 9289 phase 3 electrical principles for plumbing electrical electrical principles exam prep bse systems building regulations explained uk construction regulations construction regulations uk construction theory technical qualifications in construction plumbing revision podcast masterclass in construction theory Hosted on Acast. See acast.com/privacy for more information.