Install Instructions

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IM-PR 566442 1114 (Design Manual)
• Injection Mixing – This variable temperature control option uses either a single-speed or variable-
speed injection circulator that receives a signal from a reset control to vary the volume of hot water
injected into the secondary piping. These small injected amounts of hot water mix with the water in
the secondary piping, increasing the temperature as needed. One advantage to using an injection
mixing system is that a large amount of Btus can be carried using a relatively small diameter and a
low-wattage circulator.
Figure 1-38 Injection mixing with electronic control