Dunkirk Excelsior EXB Series - Manual (Page 31)

BOILER
ALTERNATE
CIRCULATOR
LOCATION
TO SYSTEM
FROM SYSTEM
CIRCULATOR
WATER INLET
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
BALL VALVE AIR SEPARATOR
HOSE BIB
FLOW CONTROL
VALVE
4-WAY MIXING
VALVE
EXPANSION
TANK
31
Figure 27 - Bypass Piping (4-Way Valve Option With Circulator On Supply Side)
10 - HYDRONIC PIPING
SHUT OFF
VALVES
SHUT OFF
VALVES
BOILER
SUPPLY MAIN TO
COMBINED HEATING
& COOLING SYSTEM
RETURN MAIN FROM
COMBINED HEATING
& COOLING SYSTEM
CIRCULATOR
WATER CHILLER
AIR CUSHION
TANK
Figure 28 - Recommended Piping for Combination Heating and Cooling (Refrigeration) System