Chiltrix CX45, Инструкция по установке и эксплуатации

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If two or more circulators are used in parallel, be sure to include a check valve downstream of each circulator to
prevent reverse flow should one circulator be inoperable.
4. Be very careful when selecting circulators with steep pump curves for use in high temperature systems.
The potential for vaporous cavitation within the circulator is higher in such situations. Avoiding
cavitation will require high static pressures. This article has outlined the steps that hydronic system
designers can follow to select an appropriate circulator for a given piping system. In many cases, two or
more circulator options can each yield acceptable performance based on tradeoffs in system piping. A
good selection addresses the total owning and operating cost of the system (circulator and piping) over
its design life rather than just first cost. Excessive oversizing of circulators increases initial as well as life
cycle costs and should be avoided. The wide range of hydronic circulators available from Taco allows
conscientious designers to properly match the circulator to the task.
5. When selecting components for a system, it is worth noting the effect that their imparted resistance
has on pump performance. It may be on thing to see the final
number that is calculated as part of
establishing the head loss of the piping system, but how does that number actually affect the flow rate
in the system? This becomes very clear when comparing a system where a conventional weighted flow
check is installed versus a pump with an integral flow check (00-IFC), as illustrated in Figure 4.
Figure 4
Shown is the 008 circulator, but this example holds true for any model. When a common Taco Model 219, ¾”
Flo-Chek is installed along with the pump the imparted resistance shifts the pump curve down and to the left as
illustrated. The hydraulics of the 00 Circulators with Integral Flow Checks (00-IFC) has been specifically