Hot water design temperatures

Front

Hot water design temperature should reach all points in the system after one minute at full flow.

Back

Safety guideline for hot water systems.

Front

Water must be blended at a lower temperature for safety.

Back

Safety measure for water blending.

Front

BS 6700

Back

Although superseded, it contains relevant parts for designing or installing hot water systems.

Front

Design temperatures – approved document G3

Back

G18.4: Hot water systems should provide water at terminal fittings at a temperature of not less than 50ºC within 30 seconds of opening the tap.

Front

Criteria for hot water temperature

Back

The criteria for hot water temperature may not be achievable with instantaneous or combination boilers.

Front

Part 4 requirement for bath water supply

Back

Limit discharged water temperature from bath taps to 48ºC.

Front

G18.2 distribution temperature for hot water

Back

Distribute hot water at a temperature of not less than 55ºC.

Front

Diagram of a secondary circulation system

Back

Diagram of a secondary circulation system showing key components.

Front

Importance of controlling the secondary circulation system

Back

Maximizes efficiency, especially at night when there is no demand for hot water.

Front

Minimum temperature to maintain at all outlets

Back

55ºC