INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Easco Boiler Corp 1175 Leggett Ave Bronx, NY 1047 T: 718.378.3000 F: 718.378.4560 info@easco.com easco.com
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controls is encouraged and may be required in many applications of hot water Boilers.
5.10 Water Circulation System Guidelines – Hot Water Boilers
The following guidelines relating to system water temperature fluctuation and flow
through the Boiler must be observed.
5.10.1 It is important to operate your Boiler in such a manner as to prevent temperature
fluctuation of more than 40 °F at any time. Rapid temperature changes within the Boiler
can create stresses in boiler metal. These stresses can cause damage to the Boiler by
loosening tubes, or in more severe instances can crack tube sheet ligaments, furnaces,
or access rings.
5.10.2 It is equally important to ensure that there is circulation through the Boiler of at
least 1/2 GPM/BHP at all times when the burner is firing.
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