14
Figure 10
4. Steam boiler without hot water connections
available below the water line (Refer to Figure 10).
a. Supplying the Alliance™ from the bottom
tappings in a steam boiler is not recommended
due to insufficient water temperature, especially
during warmer months when the space heating
system is not operational. Boiler water
temperature at the bottom of a steam boiler can
be 50°F lower than the boiler's water
temperature limit setting during such periods.
I. Fill boiler system.
1. On new boiler installations, do not purge the boiler
or space heating system through the water heater.
During any boiler or space heating system flushing,
cleaning, or purging, the water heater should be
isolated to avoid possible attack on the copper coil
by chemical additives.
2. Purge air from boiler/water heater piping.
3. Check system for leaks. Repair as necessary.
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