Customer Inquiry Quiz

How could the customer have prolonged the life of this guttering?

• By regularly cleaning the gutter

• By painting the gutter annually

• By installing gutter guards

• By avoiding any maintenance

What has made the guttering corrode?

• Exposure to harsh weather

• Poor material quality

• Lack of maintenance

• Chemical reactions from pollutants

Before you install the new guttering, you need to find out how much it will expand in the summertime. The temperature rise is approximately 15°C. Calculate the answer using the formula: Length x temperature rise x coefficient of linear expansion: 8000mm (8m) x 15 x 0.000018 = .

What material is the customer's hot water cylinder made of, and why is it covered in foam?

• Made of copper, covered in foam for insulation

• Made of steel, no foam covering

• Made of plastic, foam is for protection

• Made of stainless steel, covered in foam to prevent heat loss

The customer lives in a hard water area and has recently noticed that the hot water has taken a bit longer to warm up, and does not always get up to temperature. What could be the problem?

• The water heater needs maintenance or replacement due to scaling from hard water.

• The electrical connections to the water heater are faulty.

• There is a temporary reduction in the main water supply pressure.

• The settings on the water heater have been accidentally changed.

The customer also enquired about how to overcome the problem of hard water in his property. Give several options that are available.

• Water softener or base exchange unit

• Magnetic scale inhibitor

• Electric scale inhibitor

• Galvanic scale inhibitor

If the customer chose a water softener or base exchange unit, what would he need to refill it with on a regular basis?

• Salt

• Water

• Chlorine

• Soap

Being an old house, the customer has had various work and alterations to the plumbing system over the years. He has noticed that the kitchen sink cold water tap has much higher pressure than the cold water tap in the upstairs toilet. Can you explain why? The kitchen sink cold tap is run off the mains, which is high pressure. It is also on the ground floor so pressure from the mains would not have reduced significantly.

• The kitchen sink is closer to the water source, maintaining higher pressure.

• The upstairs toilet has a leak causing lower pressure.

• The pipes to the upstairs toilet are narrower, reducing water flow.

• No explanation is applicable.

The cold water tap in the upstairs basin could be attached to the rising main – the higher it goes, the lower the pressure becomes – but it is more likely to be fed from the CWSC which is low pressure. Being on the first floor, the head height between the CWSC and the outlet is not great. How does this setup affect the water pressure?

• Increases the water pressure

• Decreases the water pressure

• Does not affect the water pressure

• Varies the water pressure unpredictably

The customer's boiler is a wall mounted system boiler, which is fuelled by natural gas. What is the approximate gas to air ratio required for combustion?

• 1:5

• 1:10

• 10:1

• 5:1