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Bobcat Models B-120A and B-200A
27
FROM REST
OF SYSTEM
TO REST
OF SYSTEM
BOBCAT BOILER
ADDITIONAL
ZONES
SPACE HEAT
ZONE #1
ISOLATION
VALVE
ISOLATION
VALVE
F
LOW CHECK
V
ALVE
ZONE
C
IRCULATOR
D
O NOT EXCEED
1
2" APART
AIR VENT
AIR SEPARATOR
ISOLATION
V
ALVE
MAKE UP
WATER
SUPPLY
SHUTOFF
VALVE
PRESSURE
REDUCING
VALVE
BACK FLOW
P
REVENTOR
(
IF REQUIRED)
PURGE/
DRAIN
V
ALVE
ISOLATION
VALVE
BOILER LOOP
C
IRCULATOR
(SUPPLIED WITH
THE BOILER)
FLOW CHECK
VALVE
HOT WATER
OUTLET
COLD
INLET
WATER
SHUTOFF
VALVE
DRAIN VALVEDRAIN VALVE
DOMESTIC
HOT WATER
TANK
T + P
RELIEF
VALVE
BOILER WATER
OUTLET (SUPPLY)
RELIEF
VALVE
FLOW CHECK
VALVE
DHW
CIRCULATOR
ISOLATION
VALVE
E
XPANSION TANK
(DIAPHRAM TYPE)
BOILER WATER
INLET (RETURN)
Figure 20. Zoning with circulators.