(1) Except as provided in Sentences (2) and (3) and Article 9.10.10.5., fuel-fired appliances shall be located in a service room separated from the remainder of the building by a fire separation having not less than a 1 h fire-resistance rating.
(2) Except as required in the appliance installation standards referenced in Sentences 6.2.1.4. (1) and 9.33.1.2. (1), fuel-fired space-heating appliances, space-cooling appliances and service water heaters need not be separated from the remainder of the building as required in Sentence (1) where the equipment serves,
(a) not more than one room or suite,
(b) a house, or
(c) a building, other than a house, with a building area of not more than 400 m² and a building height of not more than 2 storeys.
(3) Sentence (1) does not apply to fireplaces and cooking appliances.