9 Installation Code Requirements New York – MEARequired by New York City to sell productsCSA International prepares specialized reportsCalifornia Energy Commission (CEC)Requires special listing of efficiency ratings for products being sold into their state.The minimum efficiency requirements are the same as the federal levels in the United StatesCSA International is an approved certification laboratoryCEC website is:
11 Gases Used in North America Liquefied Petroleum GasesTesting for compliance with LPG is conducted using Propane HD-5 with a nominal heating value of 2500 Btu/cuft (93.1 MJ/m3)LPG is a general term defined as a mixture of propane, propylene, butanes and butylenes.Propane HD-5 is defined as grade of LPG consisting of minimum of 90% liquid propane and a minimum of 5% propyleneAdditional tests for ignition and burner operation are conducted using Test Gas D Butane with a nominal heating value of 3200 Btu/cuft (119.2 MJ/m3). Certification on butane is not permitted by the water heater and boiler standards.
14 Efficiency Requirements – Gas Boilers United StatesBoilers with input ratings of 300,000 Btu/Hr (88 kW) or more must also comply with DOE regulations in 10CFR 31, Subpart E.This is not a mandatory test requirement to obtain CSA Certification.The test procedure identified in the regulation is the Hydronics Institute (HI) division of GAMA standard BTS-2000.The test conducted is a combustion efficiency test identical to the test required in ANSI Z21.13/CSA 4.9The minimum efficiency required by the regulation is 80%.
23 Efficiency Requirements For efficiency requirements regulated by the DOE in the United States, the manufacturer must report results to the DOE.For products covered under 10CFR430, (instantaneous water heaters under 200,000 btu/hr and boilers under 300,000 Btu/hr) the manufacturer must submit a compliance report directly to the DOE and will be subjected to continuous testing to confirm the rating. The details of this are in Subpart F – Certification and Enforcement to 10CFR430. Most manufacturers will arrange for the testing through the Hydronics Institute of GAMA. The results are published in their directory. Their website is:The Code of Federal Regulations (CFR) website is
32 Venting IssuesEvaluation of vent systems used on Category II, III, IV and direct vent appliances is based on the follow criteria:If the vent system is listed and the temperatures in the vent during test do not exceed temperature ratings for the vent, it is acceptable. The venting System Standards in North America are:UL 1738 – Venting Systems for Gas Burning Appliances - Category II, III and IV (United States)ULC S636 – Standard for Type BH Gas Venting Systems (Canada)
33 Venting IssuesPlastic vent systems (PVC,CPVC,ABS, etc.) are evaluated as follows:For Canadian approval, plastic vent systems must be approved to Canadian Venting system standard, ULC S636. This is required by Canadian Installation code, CSA B149.1.Temperatures are recorded on the vent material during operation of the water heater or boiler. Temperature limits on typical North America plastic material is as follows:PVC – 158 F (70 C)CPVC – 210 F (100 C)ABS – 180 F (82 C)
34 Venting IssuesFor products being certified for the United States only:For unlisted plastic materials and materials other than PVC, ABS, CPVC, the water heater and boiler standards are being revised to require that the material be evaluated for corrosion resistance to condensate requirement to the requirements in the venting system standards.Consideration for approval of the vent system to standards outside of the United States as a means of accepting the vent can be given.
35 Venting Issues Metallic Vent Systems are evaluated as follows: Listed vent systems are accepted if the temperatures of the vent gases recorded during appliance testing are less than the rated temperature of the listed system.For unlisted metallic vent systems, the water heater and boiler standards are being revised to require that the material be evaluated for corrosion resistance to condensate requirement in the venting system standards.Consideration for approval of the vent system to standards outside of the United States as a means of accepting the vent can be given.
36 ControlsControls used on water heaters and boilers are accepted on the following basis:Controls are certified to the appropriate controls standards in North AmericaUnlisted Controls are accepted in application on the basis of:Satisfactory testing of the control to the safety test requirements in the applicable North American Control standardThe appliance manufacturer must assume responsibility for the production quality control requirements of the control either by conducting the required production line tests or by setting up a system with the control manufacturer to validate the production tests conducted by the controls manufacturer.CSA International reserves the right to inspect the production facility of the controls manufacturer.
37 ControlsNorth American Control Standards referenced in the water heater and boilers standards include:Ignition Systems/burner controls – ANSI Z21.20/CSA C22.2 No. 199/UL 372*Automatic Gas Valves/Safety Shutoff Valves – ANSI Z21.21/CSA6.5*Manual Gas Valves – ANSI Z21.15/CSA 9.1*Thermostats – ANSI Z21.23, CSA C22.2 No. 24 or UL 873Temperature LimitsLimits typically certified to ANSI/UL 353 (US) and CSA C22.2 No. 24 (Canada)
38 controlsLow Water Cutoff Devices – ANSI/UL 353 (US) and CSA C22.2 No. 24 (Canada) (Boilers only)*Gas Regulators – ANSI Z21.18/CSA 6.3Relief ValvesWater Heaters – ANSI Z21.22/CSA 4.4Boilers - ASME Boiler and Pressure Vessel Code, Section IV (Heating Boilers) and CSA B51 – Boiler, Pressure vessel, and Pressure Piping code* - May be combined in one control body listed to ANSI Z21.78/CSA 6.20 – Combination Controls
40 Controls – Special Considerations CSA International evaluation of programmable controls is based on the following considerations:Recently approved standard ANSI Z21.20/CSA C22.2 No. 199/UL Automatic Electrical Controls for Household and Similar Use Part 2: Particular Requirements for Automatic Burner Ignition Systems and Components, has adapted IEC with the major exception that software evaluation is conducted using ANSI/UL 1998.ANSI/UL 1998 adapted the contents of Annex H in IECDesigns complying with ANSI Z21.20/CSA C22.2 No. 199/UL have satisfied software evaluation requirements. However, compliance with this standard is not required until 2012.
41 Controls – Special Considerations Controls not evaluated to the new ignitions system standard Z21.20/CSA C22.2 No. 199/UL , must be evaluated to the following standards:In the United States the 2005 edition of ANSI Z21.20 is used. This standard specifies software evaluation using UL 1998.Controls for Canada are tested to old edition of CSA C22.2 No. 199, which did not contain software coverage. Because of this CSA International as published an internal standard for software evaluation, CSA TIL H18A for products being certified for Canada.TIL H18A incorporates software requirements contained in ANSI Z21.20/CSA C22.2 No. 199/UL The TIL was developed to bridge the gap until the 2012 effective date for ANSI Z21.20/CSA C22.2 No. 199/UL It had an effective date of August 2008.
42 Controls – Special Considerations CSA also uses CSA C22.2 No. 0.8 – Safety Functions Incorporating Electronic Technology when evaluating features of limit controls to ANSI/UL This evaluation includes additional software evaluation using UL 1998.
43 Controls – Special Considerations Designs complying with EN 298 that have been evaluated by a CSA Partner, must be evaluated as follows for compliance with the North America standards.Construction of the device must be compared to the North American StandardA portion of the performance cycling testing must be conducted. The balance of the testing is extended from evaluations conducted for the EN approval of the controlCurrently, CSA International will accept the software evaluation conducted by qualified CSA Partners
47 Controls – Electrical Electrical Controls: Motors, switches, lamp holders, etc, are accepted on the basis of:Listing to North American standardsReview of application. Is control in a safety circuit? Is it a Class 2 circuit? Is there a listed safety device in the circuit?It may be necessary to conduct limited testing on electrical components as part of their acceptance.WiringLine voltage (120 VAC, 60 Hz) and low voltage safety circuit wiring 30 VAC or less) must be 18 AWG (0.82 mm2)Low voltage, non-safety circuit wiring that is not 18 AWG may be accepted on the basis that it is in a non-safety circuit, is suitable for the electrical load and is adequately supported/protected from damage.
48 Instructions and Markings Quoted Text RequirementsInstruction manual and marking requirements within the standards that are in quotes must have the same wording in manufacturers instructions and markings.Marking material testsThe standards require that marking materials (paper, adhesive, ink) be tested in accordance with tests in the standards or be listed markings systems to ANSI/UL 569 – Marking and labeling Systems or CSA C 22.2 No Standard for Adhesive Labels.French in CanadaMarkings and instructions must be translated for boilers and water heaters being certified for Canada. The translated material must be provided before CSA certification in Canada can be granted.
49 High Altitude Requirements Normal altitude is considered anything up to and including 2000 ft (610 m). Above this is considered high altitude.High altitude - United StatesUnited States – Installations over 2000 ft. are covered by the National Fuel Gas code, ANSI Z223.1/NFPA 54. The code requires that products be derated by 4% per 1000 ft. related back to sea level. (Installation at 3000 ft are derated 12%)It is not necessary for the manufacturer to address high altitude concerns in the United States as part of certification to the water heater and boiler standards.
50 High Altitude Requirements High Altitude – CanadaHigh Altitude must comply with the applicable requirements of CAN/CCA 2.17, Standard for Gas-Fired Appliances for Use at High Altitudes.The standard covers altitudes up to 4,500 ft (1372 m)Many manufacturers declare a derate from normal altitude (2000 ft) to 4500 ft.Manufacturers have the option of obtaining certification for altitudes only up to 2000 ft (610 m)Over 4500 ft, installations in Canada are covered by the installation code, CSA B The derate requirement is the same as in the United States.Compliance with the CAN/CGA 2.17 standard is required for certification of boilers and water heaters in Canada.
51 High Altitude Requirements CSA offers specialized testing at high altitude locations up to approximately 10,000 ft (3048 m).This testing will assist manufacturers looking to establish specific operation of appliances at altitude different than specified in the installation codes.Manufacturers with products that do not need to be derated using the requirements specified in the installation codes (4% per 1000 ft)Typically the installation instructions are modified to include the specific requirements for operation of a particular appliance at various high altitudesLocal installers and code inspectors will use these instructions when reviewing a particular installation.
52 NOx RequirementsMeasurement of NOx is not required by the water heater and boiler standards in North America. Compliance with separate standards is required to sell the appliance into certain locations, most notably California. The agency controlling the program is the South Coast Air Quality Management District (SCAQMD).Their website is
53 NOx RequirementsThe standard used by the SCAQMD is Rule – Emissions of Oxides of Nitrogen from Large Water heaters and Small Boilers and Process HeaterProducts covered by the Rule include:TYPE 1 UNIT - any water heater, boiler or process heater with a rated heat input less than or equal to 400,000 BTU per hour (117 kW) excluding tank type water heaters.TYPE 2 UNIT - any water heater, boiler or process heater with a rated heat input greater than 400,000 BTU per hour up to and including 2,000,000 BTU per hour. (732 kW)
54 NOx RequirementsCurrently, emissions on Type 2 units is must be less than or equal to 30 ppm of NOx emissions (at 3% O2, dry)After January 1, 2010, Type 2 unit are limited to a NOx emission level of less than 14 nanograms of NOx (calculated as NO2) per joule of heat output or less than or equal to 20 ppm of NOx emissions (at 3% O2, dry).
55 NOx RequirementsCurrently, emissions on Type 1 units must be less than or equal to 40 nanograms of NOx calculated as NO2) per joule (93 lb per billion Btu) of heat output or 55 ppm NOx emissions (at 3% O2, dry)After January 1, 2012, Type 1 unit NOx emission level are reduced 14 nanograms of NOx (calculated as NO2) per joule of heat output or less than or equal to 20 ppm of NOx emissions (at 3% O2, dry).
56 NOx RequirementsNOx Emmisions are the sum of nitrogen oxide and nitrogen dioxide in the flue gas, collectively expressed as nitrogen dioxide.Report from an approved testing laboratory, such as CSA International, detailing the results of the testing to the Rule must be provided to the SQAQMD as evidence of compliance.
57 Manufacturing and Production Tests Both the water heater and boiler standards require that the manufacturer submit a plan to the certifying agency outlining the quality control procedures used in the production of the listed appliance. This plan must address, at a minimum, the following items:Procedures for receiving both raw materials (steel, etc) and purchased parts (burners, valves, etc.). These procedures must detail the level of inspection conducted by the manufacturerProcedures for the conduct of the operation of safety controls on each model produced.Procedures on the inspection of the heat exchanger and pressure vessels
58 Manufacturing and Production Tests Procedures on the dielectric withstand testing of 100% of production.Procedures on verifying burner operation on 100% of production.Procedures for leak testing gas carrying portions of 100% of productionIn addition to the verification tests on all production, the manufacturer is also required to provide procedures detailing method of conducting the following tests:Burner Operating Characteristics (flashback)Proper operation of the ignition system – Verify shutdown of flame safety systemCombustion Tests – CO and CO2 emissionsFlame Rollout Safety Means – Boilers onlyHot Water Limit Test – Boilers only
59 Manufacturing and Production Tests With regards to these tests, the manufacturer must provide the following:The frequency of these tests. How often are samples taken from production line and testedThe procedures for conducting the tests. At a minimum, testing must be conducted in a “as produced” conditionForms used to record the dataTest equipment used to conduct the testsThe plan is reviewed prior to completion of certification.The plan is used by CSA inspectors during the periodic inspection of production
60 Combination Water Heaters/Boilers Coverage in the water heater standard is being developed to handle combination appliances.Combination appliances cannot be used for space heating onlyIf appliance has separate space heating and water heating circuits:Appliance must be marked with the working pressure of both the space heating and potable water heating circuitsThe space heating circuit must comply with hydrostatic pressure test of 2 times working pressure of space heating circuit but not less than 30 psi (2 bar)There are no efficiency requirements established for combination appliances. Combination appliances certified as a water heater must comply with the efficiency requirements as a water heater.
61 Combination Water Heaters/Boilers A combination appliance can only be classified as a water heater if the primary heat exchanger directly heats potable water. Proposed definition is as follows:Combination Water / Space Heater. A water heater that heats potable water directly within the appliance, and may be connected to provide space heating either directly or indirectly for distributing heated fluid to either a fan coil or similar appliance for space heating purposes. The design is such that the heating fluid temperature cannot exceed 210 F (99 C) under any circumstances during normal operation of the water heater.
62 Combination Water Heaters/Boilers The following sketch depicts an appliance that must be classified as a boiler since the primary heat exchanger is intended for space heating circuit onlyCombination water heater/boilerPrimary Heat Exchanger w/burnerSpace Heating water inlet and outletSecondary Heat Exchanger for potable waterPotable water inlet and outlet
63 Combination Water Heaters/Boilers A combination appliance that indirectly heats potable water cannot be classified as a water heater. It must be a boiler and meet the ASME pressure vessel requirements.There has been no coverage proposed in the Z21.13/CSA 4.9 boiler standard for combination appliances.
64 Combination Water Heaters/Boilers A combination appliance that is being certified to the boiler standard must have the potable (Sanitary) water circuit evaluated to portions of the water heater standard. This evaluation includes:Materials must be suitable for sanitary purposesThe design must limit the outlet water temperature from the sanitary circuit to no more than 210 F (99 C)During normal operation, the outlet water temperature shall not exceed 200 FThe sanitary circuit complies with a hydrostatic pressure 2 times the working pressure of the circuitThe required wording in the installation instructions from the water heater standard regarding chemical treatment of boiler circuit water must be included (Section of Z /CSA 4.3)Pressure relief valve is needed on sanitary circuit