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CSA B139-04 pdf free download

CSA B139-04 pdf free download.Installation code for oil-burning equipment.
(e) the vent connectors of the appliances shall be connected directly to a common vent connector of adequate cross-sectional area and as close to the chimney as practicable, or directly to the chimney vent with the vent connector from the smallest appliance on top. A solid-fuel-fired appliance shall be connected below (upstream of) any oil-fired appliance connection;
(f) the chimney vent shall be capable of venting the flue gas by natural draft when all appliances are firing at the same time, or a mechanical flue-gas exhauster shall be used; and
(g) notwithstanding Item (e), an oil-fired appliance may be connected to a common vent serving two or more oil-only-fired appliances, in excess of the chimney vent capacity, provided that the appliances are equipped with a means to ensure that only the number of appliances the chimney is capable of venting (as determined in accordance with Clause shall operate simultaneously at any time.
Note: When the vents of two or more appliances are connected to a single chimney vent via a common vent or manifold, wye (Y) connectians offer less resistance to flue-gas flow than tee (“T) connections.
When the total flue-gas temperature exceeds 400 °C (750F) (when determined in accordance with
Clause, the vent connector shall not pass through a combustible wall or partition.
When the total flue-gas temperature is 400 °C (750°F) or less (when determined in accordance with
Clause, the vent connector may pass through combustible walls or partitions, provided the
construction is guarded at the point of passage by one of the following means:
(a) a metal-ventilated thimble not less than 305 mm (12 in) larger in diameter than the pipe;
(b) a metal or burned fire-clay thimble built in brickwork or other similar material extending not less than 203 mm (8 in) beyond all sides of the thimble; or
(c) in lieu of such protection as specified in Items (a) and (b), all combustible material in the wall or partition shall be cut away from the vent connector a sufficient distance to provide the required clearance indicated in Table 4 and Figure 1 from such a vent connector. Any material used to close up such an opening shall be noncombustible insulating material.
4.2.6 Vent connector dampers
Manually operated dampers shall not be used in vent connectors of oil-fired appliances used in residences.
Manually operated dampers used in nonresidential settings shall be interlocked to prevent the burner from firing until the damper is fully open.
Automatically operated dampers used to control the draft shall be designed and arranged to maintain a safe damper opening at all times, and to prevent starting of the burner unless the damper is opened to at least 80% of the internal cross-sectional area of the vent connector.CSA B139-04 pdf free download.

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