10
This method is used to protect boilers from condensate C.
forming as well as protecting the heating system from
high water temperatures, see
gure #8
.
NOTE #1: When using bypass piping, adjust
valves A and B until desired system temperature
is obtained.
NOTE #2: Bypass loop must be same size piping
as the supply and return piping.
Installation using circulators is shown in
7. gure #9
.
Installation using zone valves is shown in
8. gure #10
.
For further piping information refer to the I=B=R Installa-
9.
tion and Piping Guide.
CONNECTING SUPPLY & RETURN PIPING
CIRCULATOR
VALVE
EXPANSION
TANK
VALVE
RETURN
SUPPLY
12"
MAX.
CIRCULATOR
FLOW
VALVE
SYSTEM
TEMPERATURE
GAUGE
"B"
"A"
SYSTEM
PRIMARY
6"
FEED
WATER
PRIMARY SECONDARY PIPING WITH BYPASS
Figure #8
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