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Bobcat Models B-120A and B-200A
29
P
SYSTEM
CIRCULATOR
DIFFERENTIAL
PRESSURE BYPASS
VALVE (IF USED)
BOBCATBOILER
ADDITIONAL
ZONES
SPAC E HEAT
ZONE #1
ISOLATION
VALVE
ZONE
V
ALVE
D
O NOT EXCEED
12" APART
A
IR VENT
AIR
SEPARATOR
ISOLATI ON
VALVE
MAKE UP
WATE R
SUPPLY
SHUTOFF
VALVE
PRESSURE
R
EDUCING
VALVE
BACK FLOW
PREVENTOR
(
IF REQUIRED)
PURGE/
DRAIN
VALVE
ISOLATION
VALVE
B
OILER LOOP
C
IRCULATOR
(SUPPLIED WITH
T
HE BOILER)
FLOW CHECK
VALVE
HOT WATER
OUTLET
COLD
INLET
WATE R
SHUTOFF
VALVE
DRAIN VALVEDRAIN VALVE
DOMESTIC
HOT WATER
TANK
T + P
RELIEF
VALVE
BOILER WATE R
OUTLET (SUPPLY )
RELIEF
VALVE
FLOW CHECK
VALVE
DHW
CIRCULATOR
ISOLATI ON
VALVE
EXPANSION TANK
(DIAPHRAM TYPE)
BOILER WATE R
INLET (RETURN)
FLOW CHECK
VALVE
I
SOLATION
V
ALVE
WATE R
CHILLER
UNIT
STRAINER
B
ALANCING
V
ALVE
Figure 22. Piping a heating-cooling system to the boiler and a chiller.