6) Now start the circulation pump. ... Start the pump circulation to circulate the fluid, to help discharge air bubbles. ... Grundfos UPS15-42F and Taco 008 AC pumps can push small air bubbles around in a closed- loop system - DC pumps cannot. ... Installer Wrap-Up: Homeowner Instructions and Labeling of System All boiler drain handles or ball valve handles on the closed-loop lines (except the vacationanbsp;...
|Title||:||Solar hot water systems|