OBC HVAC - House study plan

List every Part 6 requirement that reaches a single-family house HVAC system, writing a one-sentence plain-language rule beside each section number.

Explain in writing how Part 6 and Part 9 divide responsibility for a house HVAC system, and identify the situations where the Part 9 provisions govern instead.

Draw a one-page decision flow that routes a given HVAC question (capacity, temperature, control, ventilation, exhaust) to the correct Part.

Work 25 practice items on Part 6 scope and record the score plus a written cause for each wrong answer.

Perform a full heating and cooling load calculation for a sample two-storey house using the referenced residential load method, showing every input and assumption.

Size heating and cooling equipment from those loads and justify the selected capacity margin in a short written rationale.

Specify the control strategy for the sample house - thermostats, zoning, fan operation, humidification - and cite the Code basis for each control.

Compare your computed loads against a rule-of-thumb estimate and explain, in writing, why the detailed method governs.

Trace the full air path from return grille to supply diffuser on a sample layout and label the duct sizing basis at each segment.

Size supply, return and branch ducts for three rooms of the sample house, documenting the friction rate and velocity limits applied.

Select and locate exhaust systems for kitchen, bathrooms and clothes dryer, verifying each against the required ventilation rate and termination rules.

Design the whole-house ventilation provision and show how it coordinates with the exhaust and duct distribution already laid out.

Calculate the required combustion air for each fuel-fired appliance in a sample mechanical room using both the indoor-air and outdoor-air methods.

Determine and sketch the required clearance to combustibles for a furnace, water heater and vent connector, dimensioning each clearance on the drawing.

Diagram a venting arrangement for a mid-efficiency and a high-efficiency appliance, marking slope, termination height and any horizontal run limits.

Identify five common venting errors on a fabricated case and write the correcting Code rule for each.

Locate every required fire separation and fire-resistance rating that an HVAC installation can penetrate in a house, and record the rating for each.

Specify fire dampers, opening protection and penetration sealing for three representative duct penetrations, naming the listed assembly used.

Summarize the Building Code Act framework - scope, powers, owner and contractor duties - in a one-page written outline.

Explain in writing how a permit, an inspection and an order to comply fit into the Act's enforcement chain.

List the referenced standards that a house HVAC design depends on and state, in one line each, what the standard controls.

Outline the permit application and inspection sequence for a residential HVAC alteration, identifying what must be shown on the submitted drawings.

Describe how insulation level, air barrier continuity and envelope tightness change the heating load and the ventilation requirement of the same house.

Quantify that effect by re-running the week 2 load calculation on a better-insulated, tighter version of the sample house and comparing results.

Draft a complete HVAC submission package for the sample house - drawings, equipment schedule, load summary and specification notes.

Compile a site review checklist that a reviewer could carry to a rough-in inspection, covering venting, clearances, duct sealing and combustion air.

Re-attempt the practice items missed in weeks 1 to 6 and write a corrected rule for any item still wrong.

Rank your nine domains by practice score and schedule the specific review blocks you will run in week 8.

Complete two full-length timed mock exams under exam conditions and score each against the domain weightings.

Re-study the three lowest-scoring domains from the mock results, writing a condensed rule card for each.

Recite the key numeric limits - clearances, ventilation rates, load margins, ratings - from memory and verify each against the Code.

Review every error log entry from weeks 1 to 7 and confirm each rule can now be stated without notes.