The flow switch is operated by a gravity flow of 2 l/min. In the AUTO position the pump is started and stopped by the integral flow switch. The pump provides additional pressure to taps and similar outlet points, where the required flow rate is up to 0.3 l/s. The operation of the pump can be selected by means of a three position switch, OFF, MANUAL and AUTO. ![]() ![]() The UPA 15-90 N is a circulator booster pump with integral flow switch designed for pressure boosting of hot or cold water supplies in domestic properties. ![]() The UPA 15-90 N is mainly for use in open vented systems, but may also be installed directly on the incoming water mains supply to feed a combination boiler, provided approval has been obtained from the local water company. The Grundfos UPA 15-90 N is a small stainless steel circulator pump designed for water pressure boosting in domestic properties to provide additional pressure to hot and cold water taps and similar outlet points.
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