Eatherton

This is the third and final part of a three-article series addressing the problems associated with DHW recirculation systems.

The appearance of flux corrosion differs from HEC (hydraulic erosion corrosion) in that there are less U-shaped signs than random holes in the piping system.

Some cross-connection problems can be masked by other problems common to large, DHW distribution systems.

The new NWFA standard calls out the need for in-floor or under-floor data loggers.

In this, the final article on commissioning, we will discuss the other parameters in need of testing and documentation.

Today’s boilers come with turndown ratios that result in having to test the appliance at a minimum of three different points on the appliance’s modulating scale.

Suffice to say, there are no less than a 1000 different ways to do a system, but they all contain the same basic equipment.