Typical Installation Components for Hydronic Boilers

Component

See Page(s)

1. Air Purger ............................................................................................................................457 2. Air Vent ......................................................................................................................458 - 459 3. Expansion Tank ..........................................................................................................456 - 457 4. Pressure Reducing Valve* ........................................................................ 472 - 473, 481 - 482 5. Backflow preventer* ...........................................................................................................482 6. Circulator ................................................................................................. 469 - 470, 475 - 478 7. Flow Valve .................................................................................................................472 - 473 8. Relief Valve .........................................................................................................................480 * Dual control valve may be substituted for items on pages

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HYDRONIC & STEAM SYSTEMS