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240012994 Rev. B [08/31/2020]
FIGURE 6-3 - Piping Diagram - LWCO Location
6 - HYDRONIC PIPING
Low Water Cuto (LWCO)
(See Figure 6-6 for detail)
Air Vent
Supply
Gas
Boiler
Safety Relief
Valve
Position LWCO Above
Top of Boiler
1
DO NOT PLACE ISOLATION VALVE
BEFORE TEE OR LWCO.
Note
1
*To Drain
* Check Local Codes for
Maximum Distance to
Floor.
Arrange piping to prevent
water dripping onto boiler.
1
Return
5 gpm Limiter
Factory Installed
205 Only
Purge Valve
Magnetic
Dirt
Separator
Purge Valve
Note
Illustrations are meant to
show system piping concept
only. Installer is responsible
for all equipment and detailing
required by authority having
jurisdiction.
Note
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