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Most existing High Rise condominium buildings and office buildings feature diesel emergency generators. With low running hours, the engines do not normally wear out. However, a generator older than 25 years is a candidate for replacement for the following reasons:

  • Engine parts are no longer available or difficult to find.
  • Installation no longer meets the codes. TSSA, Fire Department or fuel distributor demand expensive changes
  • Fuel system maintenance costs, such as requirement to replace or polish diesel fuel. Fuel must be tested annually and drained/refilled or cleaned to ensure it that remains reliable. Ultra low sulfur content has made diesel fuel more susceptible to microorganism growth.
Typical Diesel Emergency Generator

Generator installation must comply with the following codes:

– CSA B282-15 Emergency electrical power supply for buildings

– CSA B139-15 Installation Code for oil-burning equipment (For diesel generators)

– CSA B149.1-15 Natural gas and propane Installation code (For NG generators)

–TSSA Adoption documents for the above

–Ontario Building Code and other codes/standards referenced in the documents above

Natural Gas versus Diesel

Natural gas emergency generators have gained 80% of the market share in recent years. Under 150 kW, gas gensets are priced more favorably compared to diesel. In regions where natural gas is considered a reliable fuel, it is the recommended solution. It eliminates all concerns related to fuel storage and maintenance.

In locations where natural gas is not considered a reliable fuel by the authorities having jurisdiction, bi-fuel engines can be utilized to reduce diesel storage volume requirements. Alternatively dual fuel engine with propane can be used.

Our Experience

Having helped our clients to replace emergency generators and deal with TSSA related issues, EET Engineering has the relevant and up-to-date expertise to provide the best advice and design your generator replacement project.