Challenge

The San Francisco Marriott boasts 1,500,000 square feet, 1,500 luxury guest rooms, and 100,000 square feet of meeting space. Every day, the hotel consumes an average of 165,000 gallons of water. Peak loads average 9,500 to 12,500 gallons per hour. The static hydraulic pressure created by locating the boiler room at the basement level of the 39-story high-rise building required the use of high pressure vessels.

Solution

Working closely with Engineers and F.W. Spencer & Sons throughout the construction process, Jim Mattocks, Director of Engineering Design for Marriott Hotels, selected seven Ace products to meet their demanding needs.

The equipment selected for this project featured high-pressure, double-wall heating tube bundles to keep the hotel’s water usage operating at maximum efficiency. Domestic hot water is supplied by two 10,000 gallon storage water heaters. Two 770 gallon storage water heaters supply the banquet and ballroom facilities. Water heating for the pool and Jacuzzi is provided by two Ace heat exchangers.

Results

Bill Kane, Director of Energy Management at the Marriott, is responsible for the performance analysis of Marriott’s equipment. “The Ace products have required little more than daily meter readings and some control adjustments,” Mr. Kane reports. “Temperatures are tracked closely, and Ace equipment continues to perform on target.”

The boiler room’s performance has not gone unnoticed. Tours are conducted regularly by visiting engineers from all over the world.