Code book challenge! 1. How far from a mechanical air intake should a propane regulator vent be terminated? - 10ft table 5.3 2. What code would dictate conditions and restrictions with regards to piping the liquid phase of propane into a building? - 5.1.6 3. If an appliance is converted from one fuel to another, what has to be market by the installer once completed? - 4.5.4 “If an appliance is converted from one gas to another, the gas to which it is converted shall be marked on the appliance rating plate by the fitting making the conversion”. 4. What size copper wire should be used when bonding metal gas piping? - 4.7.3 #6 copper 5. What type of light in conjunction with detecting a gas leak can be used? - 4.12.2 “A light, including a flashlight, used in connection with a search for gas leakage shall be of the Class I, Group IIA type.” (basically waterproof flashlight). 6. What is the maximum natural gas pressure inside business and commercial buildings? - 20psi table 5.1 7. The maximum start-to-discharge pressure setting on a propane hydrostatic relief valve shall be? - 500 psig (3500kPa) 5.4.1 8. What size shall a regulator vent line termination be? - 5.6.2 sufficient size to prevent impedance. 9. The installation of gas appliances in recreational vehicles shall comply with what requirements? - CSA Z240.4.2. 4.8.1 10. Where should a shut-off valve be located for a pressure regulator? - 5.2.1.7 a (installed upstream of the pressure regulator). 11. A pressure regulator on a vehicle shall be protected by what? - 5.2.2.6 (propane)/ 5.2.4.4 (natural gas) (protected by a substantial metal or plastic hood). 12. What type of foundation should a gas generator to be installed on? - 7.2.1.6 firm foundation and suitable framework in accordance with the manufacturer’s instructions. 13. What type of air-duct certification is required for domestic clothes dryers? - 7.5.1b certified as meeting the requirements for Class 1 air ducts contained in CAN/ ULC-S110. 14. What must be done prior to converting any appliance? - 7.6.2 shall be thoroughly cleaned, leak tested, and examined for serviceability. 15. If a new flute outlet for a converted appliance needs to be fabricated, what gauge of steel is to be used? - 7.8.5 No.24 GSG galvanized steel 16. Where are return air inlets not permitted in conjunction with a central furnace? - 7.13.3 Return air inlets shall not be installed in an enclosure or crawl space that provides combustion air to a furnace. 17. Where should the controls be mounted on a duct furnace? - 7.15.4 All controls shall be located outside the duct except for the sensing element of a control. 18. Where should you not install a construction heater? - 7.18.9b (any inhabited dwelling unit or inhabited sections of a building). 19. How far above a paved sidewalk or driveway located on public property can a vent terminate? - 8.14.8b (Less than 7ft (2.1m) above) 20. A residential appliance with an automatic vent damper can be connected to a concrete chimney as long as “what” is used in conjunction? - 8.26.2d (lined with certified liner) 21. What type of venting system should be used for a combination gas/oil burning appliance? - 8.10.3 or Table 8.5 (type L or chimney) 22. For a 250,000 BTU appliance- not having a draft control device, what size of round pipe can be used for combustion/ dilution air? - Table 8.2 (5 inches/ 125mm) 23. When using plastic venting, what minimum length from the appliance flue outlet should be visible for inspection? - 8.9.5 (the first 3ft/1m or total vent run if less than 3ft/1m from the appliance flue outlet) 24. When combustion air is supplied by mechanical means, what must be installed to shut off the gas flow in the event of air-flow failure? - 8.8.1 an air flow-sensing device shall be installed. 25. When sizing a vent for a single natural draft Category 1 appliance, what tables should be used? - 8.13.1bi (engineered venting tables acceptable to the authority having jurisdiction C1, C2,C5,C6). 26. What size should the draft hood outlet be? - 8.23.5 (the same size as the appliance flue collar unless otherwise sized in the appliance manufacturer’s instructions) 27. Draft control device requirements should not apply to what type of appliance? - 8.24.1 (either to a direct-vent appliance or to an appliance requiring a special venting system). 28. Where in relation to a chimney clean-out opening should the vent connector terminate? - 8.19.1 (the entrance of a vent connector into a chimney shall be above the chimney cleanout opening). 29. What appliance cannot be used in conjunction with a vent canopy? - 8.30.1c (if it exceeds 400,000 Btu/h (120 kW)) 30. What is the maximum overpressure relief requirement downstream of a line regulator for system downstream of a line regulator for system pressures greater than 14” w.c. ? - 5.3.3. table 5.2 (5 psi/ 35kPa) 31. Where can a gas supply pressure regulator not be installed? - 5.2.1.9 a. Inaccessible for repair, replacement, serving, or inspection b. In a concealed location c. Could be reasonably expected to be subject to physical or chemical damage 32. On a commercial clothes dryer, what can be used to connect the appliance exhaust to the required rigid venting? - 7.4.3 (a certified flexible foil non-combustible-type of duct) 33. The moisture exhaust duct on a domestic dryer cannot be secured using what? - 7.5.3 (screws) 34. Where can an unvented propane refrigerator not be installed? - 7.34.3 (not normally occupied and doesn’t directly communicate with occupied areas) 35. What is necessary when installing a furnace in conjunction with a cooling coil? - 7.12.1 36. Where is it permitted to install a gas floor furnace? - 7.13.4 (shall not be installed) 37. What is the responsibility of the supplier of a construction heater upon delivery to the user? - 7.18.7 a & b - The construction heater is approved and in safe operating condition - The lessee is instructed in the safe installation and use of the construction heater and components in accordance with the requirements of 7.18 38. Where is the supply air to a non-recirculating direct fired industrial air heater to come from? - 7.21.6 (shall be ducted directly from outdoors) 39. A commercial cook stove shall have what clearances to combustibles for sides and rear? - 7.32.4 (minimum clearance of 6 in), also see 6.21.5 40. A new residential range shall be installed with clearance to combustible materials as per… - 7.33.6 (as per appliance rating plate) 41. A gas pendant lamp fixture shall have what minimum clearances from combustible material? - 7.31.3 (18 inches above and 5 inches all side) 42. Where should a pool heater not be installed? - 7.26.5 (shall not be installed beneath any structure, including a deck) 43. What are the combustion air flow restrictions for a down-flow furnace? - 7.14.3 (circulating air and combustion air shall not be taken from the same space) 44. According to Annex ‘I’, what is the molecular weight of natural gas? - Table I.1 (16) 45. How should the exhaust gas from a non-motive engine be piped? - 7.2.4.3 (can neither be trapped nor be drawn into a building through a window, door, or other openings) 46. What type of venting is required for a concealed wall furnace? - 7.17.3 (a type BW vent kit shall be used) 47. According to Annex I, what does USWG stand for? - United States Water Gallon 48. According to Annex M, an appliance at a trade show shall be shut down when the CO levels reaches what level? - M.9- 25ppm 49. According to Annex M, an engine in a building shall be installed according to which compliance? - N3.1 (7.2.5) 50. What does Ontario Regulation 215/01 Rule #5 refer to? - Qualifications 51. What does Ontario Regulation- Gaseous Fuels Rule #11 refer to? - Duty of Employer
