There is no high-point vent at the outlet of the circulating cold water return line; how can fluid flow in this line be ensured?
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There is no vent point at the high point of the circulating cold water circuit; how can we ensure normal water return without air blockages, and how can ventilation be achieved? Thank you
Fill the system earlier, and activate the heat exchanger circulation water one by one, while monitoring the flow rate indicated by the flow meter to see how it changes.
I suddenly remembered a previous project: when the vent valve at the highest point of the circulating return water main was opened, negative pressure existed inside it. I’m not sure how to explain this
Loosen the flange of the outlet pipe and try to vent the air
Find the highest point on the system, create an exhaust hole, and install a vent valve
First, remove the pressure gauge from the outlet pipe to use it as an exhaust port, OK