Lennox COWB3 Installation Instructions Manual page 10

Figure 7 - Bypass Piping Arrangement Diagram
> LOW DESIGN WATER TEMPERATURE SYSTEMS
> LARGE WATER CONTENT SYSTEMS
> PIPING ARRANGED FOR "POWER PURGING"
AIR OUT OF THE SYSTEM PIPING, REFER TO
THIS MANUAL'S SECTION ON "FILLING THE
SYSTEM WITH WATER" OPTION #1
SYSTEM PIPING
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