Honeywell F-BO-AFE70 Series Installation, Connection, Commissioning, Maintenance

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Honeywell F-BO-AFE70 Series Installation, Connection, Commissioning, Maintenance Manual pdf 28 page image

Chapter 8 • Mounting and connection of pneumatic components User Manual Series F-BO-AFE708.2.5 Connection diagram for far-flung pipe systems with master-slave mode of the Purging unitsIf the needed air flow rate exceeds the value of one Purging unit, two Purging units have to beinterconnected in the master-slave mode. The following diagram shows the schematic connectionof the components needed for purging far-flung pipe systems, using the example of a double-Upipe system in the master-slave mode, in which both U pipe segments are purged together.Fig. 9: ASD with one pipe network and two F-BO-AFE70's in master-slave arrangement. In theexample, two F-BO-AFE70's are needed because of the total aperture area of the aspirationholes.As a supplement to Fig. 2 (page 10), the electrical connection cables are not shown here in orderto provide a clearer overview; however, the logical sequence of the Purging process has beendrawn in with red dotted arrows.A … Aspirating smoke detector with pipe networks in double-U designB … F-BO-AFE70 (master) for the first U pipe networkC … F-BO-AFE70 (slave) for the second U pipe networkD … Filter for the entire pipe network. Since most aspirating smoke detectors only permit oneexternal filter per pipe system, in the example above the filter must be located before the twoPurging units (option).E … A pressure regulator must be used if the compressed-air supply used can exceed the per-missible pressure.Which one of the two Purging units works as master unit and which one as slave unit is onlydetermined by the order in which they are cabled. The unit which receives the fault message fromthe ASD is the master unit, the unit that is actuated by the master unit is the slave unit.I56-4252-010D200-104-0028