Does an exemption for gas heaters extend to gas water tanks?
Yes, if the total thermal heat input for the facility is less than 1.58 Million KJ/h, then it is exempt and no Certificate of Approval is required. Please refer to the exemption regulation (Ontario Reg. 524/98). An updated version of Ontario Reg. 524/98 can be obtained from the Ministrys website under the Publication Section/Manuals and Guidance at: http://www.e-laws.gov.on.ca/dblaws/regs/english/980524_e.