Back6.2.1.8.(3)

ATTRIBUTION:

Functional Statement:

F81

To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.

Objective:

OS3.2, OS3.3, OS3.4

 

APPLICATION:

Protection from freezing of heating, ventilating or air-conditioning equipment that may be adversely affected by freezing temperatures, in buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6].
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], with respect to:
  • heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
  • air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).

INTENT:

To limit the probability that the exposure of heating, ventilating or air-conditioning equipment to freezing conditions will lead to their malfunction, which could lead to excessively hot supply air, electrical hazards or the release of flammable gases, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F81

To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.

Objective:

OS1.1

 

APPLICATION:

Protection from freezing of heating, ventilating or air-conditioning equipment that may be adversely affected by freezing temperatures, in buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6].
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], with respect to:
  • heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
  • air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).

INTENT:

To limit the probability that the exposure of heating, ventilating or air-conditioning equipment to freezing conditions will lead to performance that falls significantly below expectations, which could lead to fire hazards, which could lead to fire, which could lead to harm to persons.