Hot Water - PPT 2 - System Upgrades

What is one disadvantage of the old gravity circulation system in plumbing?

• Fast heat-up and recovery

• Little or no control, leading to wastage of fuel

• Small diameter pipes required

• Highly insulated cylinder and pipework

What size of pipes is required on primary circuits in old gravity systems?

• 15mm

• 22mm

• 28mm

• 35mm

Which of the following is a characteristic of old gravity systems?

• Efficient fuel usage

• Poorly insulated cylinder and pipework

• Quick heat-up and recovery

• Small diameter pipes

What is required for hot water storage vessels if they are changed?

• Minimum efficiency requirements

• Maximum capacity standards

• Basic safety checks

• Standard installation guidelines

What is involved in the upgrading of controls in an old gravity system?

• 'C' Plan

• 'B' Plan

• 'A' Plan

• 'D' Plan

What should boilers meet if they are changed according to the new upgrade requirements?

• Old efficiency standards

• New SEDBUK ratings scheme

• Minimum safety requirements

• Maximum temperature limits

What type of control upgrade is mentioned for the system?

• Manual control

• Fully pumped ('S'/'Y' or Pump Plan)

• Semi-automatic control

• Gravity-fed control

Who must certify the installations of the upgraded system?

• Any available technician

• A competent person

• The homeowner

• A government official

What should be done to all pipes connected to a hot water vessel?

• Painted for protection

• Insulated as per requirement

• Left exposed for easy access

• Covered with plastic