Sentence 5.2.8.5.(1)

Intent 1:

To limit the probability that heat pumps with a supplementary heating system will be installed without controls, which could lead to unnecessary operation of the supplementary heaters, which could lead to unnecessary consumption of energy for heating, which could lead to excessive use of energy, which could lead to an unacceptable effect on the environment.

Intent 2:

To limit the probability that the controls will not prevent operation of the supplementary heaters when the load can be met by the heat pump, which could lead to unnecessary operation of the supplementary heaters, which could lead to unnecessary consumption of energy for heating, which could lead to excessive use of energy, which could lead to an unacceptable effect on the environment.