Central heating power point 4 2025

What grades of copper are commonly used in domestic heating systems?

• R100 and R150

• R220 and R250

• R300 and R350

• R400 and R450

What is the horizontal run distance for a 28mm pipe at 80C?

• 500mm

• 600mm

• 800mm

• 1,000mm

What is the vertical run distance for a 10-15mm pipe at 60C?

• 500mm

• 600mm

• 800mm

• 1,000mm

What is the horizontal run distance for a 10-15mm pipe at 60C?

• 300mm

• 400mm

• 500mm

• 600mm

What is the vertical run distance for a 28mm pipe at 80C?

• 800mm

• 1,000mm

• 1,100mm

• 1,400mm

What is the horizontal clipping distance for a 22 size copper pipe?

• 1.2

• 1.8

• 2.4

• 3.0

What does insulation stop from getting to the pipe?

• Heat

• Water

• Cold

• Light

What is the primary use of traditional stitched felt pipe insulation?

• Decorative purposes

• Economical and effective protection for pipework under floors

• Increasing water flow

• Soundproofing

What precaution should be taken when soldering in older properties?

• Use more insulation

• Avoid using water

• Take care due to flammable materials

• Increase temperature

Which of the following is a material used for insulation?

• Cotton

• Stitch felt

• Wood

• Metal