Group: Alfa Laval
Catalog excerpts
Pressosmart Pressurisation set for heating systems, air conditioning and a variety of industrial applications Pressosmart with two closed expansion vessels. Application Pressosmart is a pressurization set designed to maintain stable pressure in a closed water loop, such as those used in heating systems, air conditioning and a variety of industrial applications. With its electronic controller, Pressosmart offers more accurate control than standard stand-alone membrane expansion technology and a considerably smaller equipment footprint. Pressosmart can be connected to closed expansion vessels that prevent water from coming into contact with oxygen in the air. This reduces corrosion and pipeline maintenance, which extends the lifetime of the entire installation. Presso smart can also be connected to open expansion vessels. Working principle When the temperature increases in a closed water loop, the water volume expands. When the temperature decreases, the opposite occurs. The increased volume generated by thermal expansion in the closed loop will be discharged through the pressure control valve and stored in the expansion vessel. When the p ressure sensor detects a pressure drop due to a temperature decrease, water will be pumped back into the loop. Stable and even pressure is thus continuously maintained in the closed loop. Pressosmart automatically fills the installation when there is not enough water and also protects against overflow. Renovation Existing Pressosmart installations that use open expansion vessels can be easily upgraded to the closed expansion t echnology by simply replacing the existing vessel with a closed expansion vessel. The pump module does not need to be replaced.
Open the catalog to page 1Hydraulic chart Pump module / Module pompe Closed expansion vessel / Vase expansion fermé AV Boiler / Chaudiere Pressurization pump Pressure control valve Pressure sensor Control box Fill up solenoid valve Pressure relief valve Cold water feed Electro-valve Measure control box Weight sensor Air Vent Drain work connection Options • Impulsion meter to control the normal operation of the system by filling with water, and to alert and shut down the system in case of leakage. Included for closed expansion vessel. • Core-water strainer, 89 µm, to protect the solenoid valve used to fill the...
Open the catalog to page 2Quick selection guide The chart below should be used for closed-loop installations running low-pressure hot water at 90/70°C (mean temperature 80°C). Example of use: See below chart – Installation capacity: 2500 kW – Building static height: 40 m Selection: Possible choice: MP4N616, MP5N616, MP5N626, MP71017. Connected to a 1000 L closed expansion vessel. Alternative: 1000 L open expansion vessel. Please consult Building static height: 40m For MP4/MP5/MP7 the last 2 digits indicate the number and type of pressure-control valve. Appropriate system configuration can be done in our electronic...
Open the catalog to page 3Article Number Article Number PCV (Pressure Control Valve) opens when pressure exceeds the set point. Max capacity given for Samson 44-6 PCV type. The use of Samson 44-7 type will increase these values (MP7). FLA (Full Load Amperage) when operating at full load conditions under 230 V 1Phase 50 Hz. Except for MP195 where an open expansion vessel is included. All Pressosmart pump modules are equipped with Micro2000 controller, except MP195 type S which uses electro-mechanical pressure switches. Electrical supply 230 V 1Phase 50 Hz. Pressosmart MP7 also exists for 400 V 3Phase 50 Hz power....
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