Draft Details

Designation:B139 SERIES
Contact name:Nick Shrewsbury-Gee
Review start date:Dec 20, 2022
Review end date:Feb 18, 2023
Contact email:kelly.yaremko(at)csagroup.org
Draft Scope/Description:


This Code specifies minimum requirements for the installation of large oil-burning equipment.

Note: The intent of this Code is to apply to multi-unit residential, commercial, institutional, and industrial buildings in accordance with the provincial building code or, in the absence of such regulation, the National Building Code of Canada.


This Code applies to the installation of appliances, equipment, components, and accessories where oil is used for fuel purposes in applications that include

a) space heating;

b) service water heating;

c) power generation; and

d) process application.


This Code provides minimum requirements for installing or altering all stationary and portable oil-burning equipment, including

a) furnaces;

b) process furnaces;

c) boilers;

d) water heaters;

e) vehicle heaters;

f) construction heaters; and

g) stationary internal combustion engines when used for shaft-power applications for buildings.

Note: For installation of internal combustion engines for emergency power applications, see also CSA C282 and CSA Z32. Both these Standards refer to CSA B139 Series for installation of accessories such as fuel tanks and piping.



This Code provides minimum requirements for installing or altering ancillary equipment, including

a) piping and tubing systems;

b) pumps;

c) control devices;

d) venting systems;

e) accessories;

f) heat distribution systems that affect the proper operation of the oil-burning equipment;

g) central oil distribution systems; and

h) underground supply tanks, aboveground outdoor tanks, and aboveground tanks installed inside of buildings.


This Code provides requirements for the maintenance of the most commonly used types of oil-burning equipment.


This Code provides recommended precautions for filling tanks (see Annex I).


This Code does not apply to

a) process equipment installed in refineries;

b) appliances installed in park model trailers, recreational vehicles, and marine craft;

c) portable devices such as lamps, blowtorches, melting pots, and weed burners;

d) integral fuel tanks of 45 L (10 gal) capacity or less on internal combustion engines; or

e) portable oil-burning equipment within the scope of CAN/CSA-B138.1/CAN/CSA-B138.2.

Note: For reference, the terms “park model trailers” and “recreational vehicles” are as defined in CAN/CSA-Z241 Series and CSA Z240 RV Series.


In this Code, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Code.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.


The values given in SI units are the units of record for the purposes of this Code. The values given in parentheses are for information and comparison only.


Figures and tables that are referenced with the prefix “B” are to be found in Annex B.

Note: For example, a reference in this Code to “Table B.1” means Table B.1 in Annex B.

Figure 1 - Applicability guidance diagram

(See Clause 0.)

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