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20
O. Applications*
Mixing valves are required for the protection of low temperature loops.
Figure 8 - Near Boiler Piping* - NOTE: This drawing is meant to show system piping concept only. Installer is responsible for all equipment
and detailing required by local codes. *Top / Bottom Supply / Return Connections Available on 155 / 199 / 285 / and 399 Models ONLY.
NOTE: In piping applications utilizing a single zone, it is recommended that the installer use flow / check valves with weighted
seats at or near the appliance to prevent gravity circulation.
WHL-016 Rev. 4.14.16
CAUTION
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