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WATER BOILER
Connect water piping
DIAPHRAGM expansion tank (Figure 6)
system water volume and temperature. Tank must
tank manufacturer's instructions for details.
water to be lost from relief valve and
makeup water added through fill valve.
Eventual section failure can result.
CLOSED expansion tank (Figure 7)
system water volume and temperature.
water to be lost from relief valve and
makeup water added through fill valve.
Eventual section failure can result.
per 5 feet of piping.
Part number 550-141-986/0112
— Boiler Manual
(continued)
Near-boiler piping, with diaphragm expansion tank
Near-boiler piping, with closed expansion tank
15
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