RESIDENTIAL BOILERS Models 0030B, 0042B, 0066B, 0090B 0135B, 0180B OPERATING AND INSTALLATION INSTRUCTIONS

12
ZONE HEATING WITH INDIRECT DOMESTIC
HOT WATER SUPPLY
Fig.# 8998.1
ZONE
VALVES
HEATING UNITS
FEED
VALVE
COLD
WATER
INLET
CIRCULATOR
PIPE PRESSURE
RELIEF VALVE
TO DRAIN
DIAPHRAGM
EXPANSION
TANK
AIR
SCOOP
AIR
VENT
HOT WATER
SUPPLY
COLD
WATER
SUPPLY