Dunkirk EMPIRE 3EWC0.80 Installation, Operation & Maintenance Manual page 12

SYSTEM PIPING
Figure 8 - System Piping Arrangement Zoning With Zone Valves
> CIRCULATOR ON SUPPLY PIPING PUMPS
AWAY FROM EXPANSION TANK
N O T E : C I R C U L A T O R C A N A L S O B E
INSTALLED ON RETURN PIPING.
> PIPING ARRANGED FOR "POWER PURGING"
AIR OUT OF SYSTEM PIPING, REFER TO
THIS MANUAL'S SECTION ON "FILLING THE
SYSTEM WITH WATER" OPTION #1
12
PN 240013012, Rev. B [12/15/2020]