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WATER
HEATER
8in TO 12in
MAX.
HOT
OUTLET
EXPANSION TANK
(OPTIONAL)
MIXING
VALVE
COLD
INLET
CHECK VALVE (IF
USED REQUIRES
EXPANSION TANK)
COLD SUPPLY
HOSE BIB
(OPTIONAL)
FLOW
CONTROL
SUPPLY
RETURN
CHECK
VALVE
EXTERNAL
CIRCULATOR
AIR HANDLER
HOT WATER
TO HOUSE
FIXTURE
Figure 14 COMBO HEATING - AIR HANDLER
C
H
M
INTERNAL
CIRCULATOR
DRAIN/PURGE
VALVE
WATER
HEATER
8in TO 12in
MAX.
HOT
OUTLET
EXPANSION TANK
(OPTIONAL)
MIXING
VALVE
COLD
INLET
CHECK VALVE (IF
USED REQUIRES
EXPANSION TANK)
COLD SUPPLY
HOSE BIB
(OPTIONAL)
FLOW
CONTROL
SUPPLY
RETURN
CHECK
VALVE
EXTERNAL
CIRCULATOR
HYDRONIC
BASEBOARDS
(SERIES CON-
NECTED
SHOWN)
HOT WATER
TO HOUSE
FIXTURE
Figure 16 COMBO HEATING - BASEBOARD
C
H
M
WATER
HEATER
8in TO 12in
MAX.
HOT
OUTLET
EXPANSION TANK
(OPTIONAL)
MIXING
VALVE
COLD
INLET
CHECK VALVE (IF
USED REQUIRES
EXPANSION TANK)
COLD SUPPLY
HOSE BIB
(OPTIONAL)
FLOW
CONTROL
SUPPLY
RETURN
CHECK
VALVE
EXTERNAL
CIRCULATOR
HYDRONIC
IN-FLOOR
LOOP
HOT WATER
TO HOUSE
FIXTURE
Figure 15 COMBO HEATING - IN-FLOOR LOOP
C
H
M