Fencalc XA2021
Drawings and schedules
Mechanical layouts, schedules and reports should name the same systems and performance data.
How to use the diagram
Read the visual first, then connect each label to the lesson text and your calculator inputs. The aim is to make every assumption visible before you calculate.
Learning Objective
Prepare service notes that can be reviewed against drawings.
Substitution control
Equipment substitutions must be checked because efficiency and capacity can change.
Practice Task
- Write an air-conditioning compliance note.
- List substitution approval requirements.
Calculator Tip
Add a "verify before substitution" note for specified equipment.
Worked Example: Equipment Evidence Check
Scenario
A split unit is specified for two bedrooms, but the product schedule only shows model names.
Calculator Entry
Attach equipment schedules and data sheets to the compliance record.
Step-by-step method
- 1Map each unit to the spaces served.
- 2Collect rated capacity and efficiency evidence.
- 3Check that sizing and controls are appropriate.
- 4Require substitution review if equipment changes.
Expected conclusion
The report should rely on rated performance evidence, not model names alone.
Common Mistakes
- Using marketing claims instead of rated equipment performance evidence.
- Assessing equipment without mapping the spaces served.
- Ignoring equipment substitutions that change capacity or efficiency.
Quick Knowledge Check
1. What should you confirm before applying this lesson to a project?
Mechanical schedule matches report.
2. Which piece of evidence should support the main input in this lesson?
Write an air-conditioning compliance note.
3. What is the safest action if the information is incomplete?
Flag the missing evidence, use a conservative assumption where appropriate, and avoid claiming compliance until the information is confirmed.