Hot water systems Flashcards

Front

Hot water vent pipe height can be calculated by

Back

40mm x head height (+150)

Front

The feed to a hot water cylinder from a vented cylinder should be...

Back

above the cold water indirect feed to prevent scalding.

Front

The horizontal section of the hot draw off from a hot water cylinder should be a minimum length of...

Back

450mm to prevent one pipe circulation (parasitic circulation)

Front

A direct cylinder is heated by...

Back

Immersion heaters or directly from the boiler

Front

An indirect double feed hot water cylinder heats water through the use of...

Back

A coil that is connected to a heat source (usually this has the same water as the heating primary circuit within it)

Front

What is the primary purpose of a vent pipe?

Back

To act as a safety relief

Front

What type of hot water cylinder does not make use of a vent pipe and can be fed from the mains directly?

Back

An unvented cylinder

Front

What material can be found at the base of a cylinder to prevent electrolytic corrosion?

Back

Magnesium

Front

A combined cylinder incorporates what into its design?

Back

A cold water storage cistern, , cold feed and vent pipe

Front

What type of cylinder makes use of an annulus?

Back

Primatic cylinder (Single feed indirect)