12
FORCE E
Installation, Operating & Service Manual
109444-03 - 12/19
6 Water Piping (continued)
'C'
'B'
'A'
To
System
To
System
Optional Circulator Zone
Controlled System
Optional Zone Valve
Controlled System
System
Circulator
System
Zone
Valves
Zone Circulators
Full Port
Isolation
Valves
Flow Check
From System
Full Port
Isolation
Valves
Drain Valve
Safety Relief Valve
Pipe within 6"
of floor or drain
Drain Valve
IWH
Return
IWH
Supply
Indirect Water Heater
(IWH)
Air Separator
& Air Vent
Expansion
Tank
Backflow
Preventer
Fill
Valve
Cold
Water
Return
Full Port
Isolation
Valves
Unions
Flow Check
IWH Circulator
Full Port
Isolation
Valve
Unions
Full Port
Isolation
Valve
A. At least eight pipe diameters upstream of boiler return tee.
B. No further apart than 12" (~30cm) or four pipe diameters, whichever is smaller.
C. At least 18" (~46cm) of straight pipe for
Conventional
Air Scoop.
Circulator
Figure 6-4: Recommended Piping for Primary/Secondary System (left side)
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