On 09-05-13, at 08:04, <carol.gagne@mddep.gouv.qc.ca> wrote:
  Développement durable,
  Environnement et Parcs
  Québec
Dear Sir,
In a masonry heater consisting of several tonnes of brick or stone, the wood burns rapidly until the fire goes out. The heat that has been accumulated during the fire continues to radiate from the mass for numerous hours.
Masonry heaters are excluded from PRACB (Wood Burning Appliance Regulatory Project)as they are site built. Article 1 of PRACB specifies that " The present regulation is applicable to all stoves, furnaces, boilers, prefabricated inserts."
Also, norms CSA and USA EPA to which the PRACB ruling refer, are not applicable to masonry heaters, which have no need of an exemption certificate.
A text of the regulation can be found at the following address
http://www.mddep.gouv.qc.ca/air/chauf-bois/reglement.pdf
Carol Gagné, ing., M.Sc.
  Ministère du Développement durable, de l'Environnement et des Parcs
  Direction des politiques de la qualité de l'atmosphère
  Édifice Marie-Guyart, 5e étage
  675, boulevard René-Lévesque Est
  Québec (Québec) G1R 5V7
  Téléphone: 418-521-3813, poste 4594
  Télécopieur: 418-646-0001