WorksheetsMTL2 Hot Water Learner Outcome 10
Total questions: 15
Worksheet time: 8mins
When should a visual inspection be done?
After filling the system
Before filling the system with water
After painting
After heating the water
What should you check before filling a new system?
Wall colour
Floor finish
That all joints and fittings are secure
That the water is hot
What must be fitted on all open pipe ends before filling?
Tap handles
Stopcocks
Caps or plugs
Air vents
What should you check about the cistern before filling?
Its colour
Its label
That it’s supported and has a lid
That it’s above 2 m
Before testing, ensure the immersion heater is:
On and heating
Half full of water
Isolated from the electrical supply
Wired to mains
What indicates the cylinder is full during filling?
The vent pipe rattles
The water overflows
The hot draw-off pipe goes cold
The thermostat clicks
After filling, what should you check for?
Dust
Air movement
Leaks at joints and fittings
Water colour
What is a soundness test used for?
Measuring temperature
Checking for leaks under pressure
Measuring flow rate
Balancing water levels
During testing, air in the system should be:
Ignored
Released through vents
Pressurised
Left trapped
Why is flushing a new system important?
To cool it down
To add limescale
To remove dirt, debris, and bacteria risk
To save time
What should be used to flush the system?
Water from the bath
Stored tank water
Fresh clean mains water
Rainwater
How long should you run water at each outlet when flushing?
5 seconds
Until it’s cold
20–30 seconds after it runs clear
Only 2 seconds
After flushing, what should be checked again?
The pump speed
The floorboards
The system for leaks
The wall temperature
What must be done if a test finds a defect?
Ignore it
Continue installation
Stop and fix it before proceeding
Cover it with insulation
Why should manufacturers sometimes be contacted after testing?
To buy spare parts
To report or replace faulty components
To ask for training
To arrange payment
