Podcast
Questions and Answers
The main reason that "dead legs" are best avoided in the layout of hot water systems is:
The main reason that "dead legs" are best avoided in the layout of hot water systems is:
- To prevent wastage of water (correct)
- The water does not get hot enough
- To prevent scalding temperatures
- They cost more to maintain
Which one of the following items of work would usually be recorded on a maintenance contract?
Which one of the following items of work would usually be recorded on a maintenance contract?
- Disinfection of a cold water system in a dwelling
- Settings on thermostatic mixer valves in a shower block (correct)
- Cleaning spray heads on a domestic shower in a bathroom
- Checking the correct action of a float valve in a domestic feed and expansion cistern
Pillar taps to a wash basin are to be replaced with a mixer tap that mixes water in the body of the tap.
The hot tap is supplied from storage and the cold tap from the supply pipe.The type of valve that must be fitted to the hot and cold basin pipework is a:
Pillar taps to a wash basin are to be replaced with a mixer tap that mixes water in the body of the tap. The hot tap is supplied from storage and the cold tap from the supply pipe.The type of valve that must be fitted to the hot and cold basin pipework is a:
- Fullway gate valve
- Single check valve (correct)
- Supply stop valve
- Air inlet valve
Which one of the following grades of copper pipe would be the most suitable for producing the open vent pipe connection to a cold water storage cistern without fittings?
Which one of the following grades of copper pipe would be the most suitable for producing the open vent pipe connection to a cold water storage cistern without fittings?
When installing a fullway gate valve following the temporary decommissioning of a system, it is a water regulation requirement that it is:
When installing a fullway gate valve following the temporary decommissioning of a system, it is a water regulation requirement that it is:
The working separation in a single feed indirect hot water cylinder is based on:
The working separation in a single feed indirect hot water cylinder is based on:
Which one of the following sanitary appliances must not be connected to the hot water supply from a combination boiler?
Which one of the following sanitary appliances must not be connected to the hot water supply from a combination boiler?
What is the minimum size of hot water pipework from a small combination boiler in a domestic property?
What is the minimum size of hot water pipework from a small combination boiler in a domestic property?
A shower pump should normally be sat on:
A shower pump should normally be sat on:
A low pressure manual shower mixer must be supplied with:
A low pressure manual shower mixer must be supplied with:
A replacement pump for a secondary hot water circuit is normally manufactured from:
A replacement pump for a secondary hot water circuit is normally manufactured from:
When replacing the control valve in an electric shower, it is found that the cable supplying the unit does not contain an earthing conductor. What action should be taken?
When replacing the control valve in an electric shower, it is found that the cable supplying the unit does not contain an earthing conductor. What action should be taken?
Flashcards
Why avoid 'dead legs'?
Why avoid 'dead legs'?
To prevent water wastage in hot water systems.
Maintenance contract record?
Maintenance contract record?
Adjusting the settings on thermostatic mixer valves in a shower block.
Valve type for mixer tap?
Valve type for mixer tap?
A single check valve on both the hot and cold basin pipework.
Copper pipe grade for vent?
Copper pipe grade for vent?
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Fullway gate valve access?
Fullway gate valve access?
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Working separation basis?
Working separation basis?
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What is Convection?
What is Convection?
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Why shouldn't an ascending spray bidet connect to hot water from a combi boiler?
Why shouldn't an ascending spray bidet connect to hot water from a combi boiler?
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Minimum hot water pipe size for a combi boiler?
Minimum hot water pipe size for a combi boiler?
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Why place shower pumps on solid floors?
Why place shower pumps on solid floors?
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Shower pump mountings?
Shower pump mountings?
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Low-Pressure Shower Mixer Supply
Low-Pressure Shower Mixer Supply
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Hot water pump material?
Hot water pump material?
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Electric shower lacks earthing conductor?
Electric shower lacks earthing conductor?
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Study Notes
- When replacing an electric shower's control valve, and the cable supplying it lacks an earthing conductor, the shower should be isolated at the consumer unit and a warning notice placed on it.
- It is also appropriate to place a temporary continuity bond should between the hot and cold pipework.
- An ascending spray bidet must not be connected to the hot water supply from a combination boiler.
- The working separation in a single feed indirect hot water cylinder is based on convection.
- The minimum size of hot water pipework from a small combination boiler in a domestic property is 22mm.
- A shower pump should normally be set on anti-vibration mountings.
- A low-pressure manual shower mixer must be supplied with hot and cold water from the supply pipe.
- The replacement pump for a secondary hot water circuit is normally manufactured from bronze.
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