WHY MULTIPLE BOILERS MAKE SENSE

Whether you are faced with replacing an old, large, hot water boiler, or when designing a new hydronic heating system, you must decide whether to install one large hot water boiler or multiple smaller boilers. Although most systems are designed around one large boiler, when you think about how most heating systems operate, multiple smaller boilers can make a lot of sense. The first thing you want to do is perform a heat-loss calculation. By establishing the true load on the building, the replacement boiler or boilers will not be oversized. 

USING THE P-T CARD AS A SERVICE TOOL

Manufacturers of refrigerants, controls, and other supplies have distributed hundreds of thousands of pressure-temperature charts to the trade. In spite of the widespread availability and apparent reference to the pressure-temperature relationship, the number of service technicians who use the P-T chart properly in diagnosing service problems is very few. The purpose of this article is to not only demonstrate the proper use of the pressure-temperature relationship, but to also illustrate how it can be used to thoroughly analyze a refrigeration or air conditioning system.

SETTING PRIORITIES

In 1970, sociologist Dr. Edward Banfield of Harvard University wrote a book entitled “The Unheavenly City.” He described one of the most profound studies on success and priority setting ever conducted. Banfield’s goal was to find out how and why some people became financially independent during the course of their working lifetimes. What he finally discovered was that the major reason for success in life was a particular attitude of mind. Banfield called this attitude “long-time perspective.” 

Publication date: 6/8/2015

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