Installation & Operating Manual

Bobcat Models B-120A and B-200A
29
P
SYSTEM
CIRCULATOR
DIFFERENTIAL
PRESSURE BYPASS
VALVE (IF USED)
BOBCAT BOILER
ADDITIONAL
ZONES
SPAC E HEAT
ZONE #1
ISOLATION
VALVE
ZONE
VALVE
DO NOT EXCEED
12" APART
AIR VENT
AIR
SEPARATOR
ISOLATI ON
VALVE
MAKE UP
WATE R
SUPPLY
SHUTOFF
VALVE
PRESSURE
REDUCING
VALVE
BACK FLOW
PREVENTOR
(IF REQUIRED)
PURGE/
DRAIN
VALVE
ISOLATION
VALVE
BOILER LOOP
CIRCULATOR
(SUPPLIED WITH
THE 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 WAT ER
OUTLET (SUPPLY )
RELIEF
VALVE
FLOW CHECK
VALVE
DHW
CIRCULATOR
ISOLATI ON
VALVE
EXPANSION TANK
(DIAPHRAM TYPE)
BOILER WAT ER
INLET (RETURN)
FLOW CHECK
VALVE
ISOLATION
VALVE
WATE R
CHILLER
UNIT
STRAINER
BALANCING
VALVE
Figure 22. Piping a heating-cooling system to the boiler and a chiller.