Quantcast Figure 2-38 An Automatic Air Vent

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FIGURE 2-37
Baseboard Tee with Coin
Vent (top) and a Boiler
Drain (bottom)
The high points of closed-loop systems containing solar fluids must be vented, but
with manual (coin) vents. (Figure 2-39) The vent should be a simple needle valve,
with absolutely no plastic seals, seats, wafers, or other non-metal components.
During installation and maintenance procedures, service personnel can open the
valve to check for air or to let it out. Otherwise, the vent stays closed.
FIGURE 2-38
An Automatic Air Vent
OPERATION
42
2.7 COMPONENT OPERATION





 


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