Preface
This is the third edition of CSA Standard CAN/CSA-B366.1, Solid-Fuel-Fired Central Heating Appliances.
During the past 15 years, there has been renewed interest in the use of roundwood for residential heating, and recently there has been progress in the use of wood chips and other particulate biomass fuels for process and space heating. This resulted in a proliferation of solid-fuel-fired heating appliances on the market and a demand that they be subject to controls in the interest of public safety. CSA responded to this demand by developing both this Standard on solid-fuel-fired central heating appliances and CSA Standard CSA Standard CAN/CSA-B365, Installation Code for Solid-Fuel-Burning Appliances and Equipment. In addition, the growing awareness of the effects on air quality, and on the environment generally, of fuel-burning devices led to the need for guidelines for measuring the emissions from, and performance of, solid-fuel-burning appliances. CSA responded to this need b y developing Preliminary Standard B415, Performance Testing of Solid-Fuel-Burning Appliances.
In 1979 CSA published Preliminary Standard B366. The first edition of B366.1 was published in 1981, and the second edition was published in 1987.
This third edition contains revisions and additions to several clauses as follows:
(a) Clause 5 has been revised in order to group together construction-related subclauses and also to add material related to heat exchanger corrosion and to the use of draft inducers.
(b) Clause 6 has been reorganized and now groups together most clauses related to controls. It now includes a requirement for overload protection of electric motors used in materials-handling systems.
(c) The remaining clauses have been reorganized and renumbered in order to make the Standard easier to use. In particular, Clause 10 has been expanded to provide specific guidance relative to the test installation for solid-fuel-firing test together with the associated new Figure 8, and to the type of test fuels used during firing. A new test has been added dealing with appliance response to abnormal fluctuations in the electrical power supply. A new subclause has been added relating to minimum heat exchanger temperatures in order to test for any tendency for condensation of potentially corrosive substances to form on the exchanger surfaces. A reverse-flow test has been added together with the associated new Figure 9 in conjunction with the new requirements in Clause 7.
(d) Throughout the Standard, the wording of various clauses has been modified where necessary in order to clarify the intent. Also, references to Imperial and other non-SI units have been removed in order to comply with CAN/CSA-Z234.1, Canadian Metric Practice Guide, and to correct some errors due to improper conversions in earlier editions; traditional units have been retained, along with their SI (metric) equivalents, for all information (instructions, labels) that is required by this Standard to be supplied to the installer and to the owner/operator.
This Standard was prepared by the Technical Committee on Solid-Fuel-Fired Appliances under the jurisdiction of the Standards Steering Committee on Fire Safety and Fuel Burning Equipment and has been approved by both Committees. It has been approved as a National Standard of Canada by the Standards Council of Canada.
Scope
1.1
This Standard applies to manually or automatically fuelled solid-fuel-fired central heating appliances that have
provision for venting directly to the outdoors by means of flue pipes, chimneys, etc.
1.2
For the purpose of this Standard, the term solid-fuel includes, but is not limited to, coal and biomass fuels such as cordwood, chips, sawdust, wood and paper pellets, and corn.
1.3
This Standard applies to appliances, factory- or field-assembled, that have been, or could have been, completely assembled at the manufacturer's plant and transported in the assembled condition.
1.4
This Standard also applies to the manually or automatically fuelled solid-fuel features of a combination solid-fuel-/fuel-oil-fired appliance, where the solid-fuel features may affect the safety or performance of the oil-fired appliance. In these cases, requirements in this Standard are additional to the requirements for the specific oil-fired appliance.
1.5
This Standard also applies to outdoor-aired solid-fuel-fired appliances. For the purposes of these requirements, outdoor-aired refers to appliances wherein all combustion air is to be taken directly from the outdoors.
1.6
This Standard also applies to solid-fuel-fired furnaces intended to be added on directly in series at a point after the warm air leaves the forced-warm-air oil-, natural-gas-, or propane-fired furnace (downstream series add-on).
1.7
The requirements for solid-fuel-fired add-on furnaces also apply to any additional ductwork, controls, and other equipment recommended by the add-on furnace manufacturer and intended to be added on during the installation of the furnace.
1.8
The requirements for solid-fuel-fired add-on furnaces do not apply to parallel systems and upstream series add-ons (where the solid-fuel-fired furnace has been added on directly in series at a point before the air enters the existing forced-warm-air furnace).
1.9
This Standard also applies to solid-fuel-fired furnaces
(a) intended to be added on directly in series at a point after the warm air leaves the existing forced-warm-air electric furnace (downstream series add-on); and
(b) with a single warm-air discharge meeting the requirements of CSA Standard C22.2 No. 23.
1.10
This Standard does not cover fireplaces, incinerators, space heaters, or stoves.
1.11
Only SI (metric) units are used in this Standard, with the following exceptions:
(a) For power input/output designations, the SI unit (kW) is followed by the Imperial designation (Btu/h) in parentheses.
(b) For flow rates, the SI designation (L/s) is followed by the US designation (USGPH) in parentheses.
(c) For instructional material and labels, the SI designations will be followed by Imperial/US designations in parentheses.
(d) Tables 1, 2, and 3 are technical reference tables, and the Imperial designations have been retained.
The values given in SI units are considered to be the Standard. The values given in parentheses are for information only.
1.12
Only Celsius degree designations are used in the text for both specific temperatures and temperature differentials.
