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Weil-McLain 380 User Manual page 28

Water & steam boilers for gas, light oil, & gas/light oil-fired burners
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Weil-McLain 80 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners
11
1. Install furnished controls where shown in Table 10 and
Figure 27.
Failure to properly install, pipe and wire
boiler controls can result in severe damage
to boiler, building and personnel; and is
not covered by boiler warranty.
2. Relief valve must be installed with spindle in vertical
any other connection in that piping.
Relief valve discharge line must be piped
using rigid material suitable for 375°F,
threaded one end, near floor close to drain
to eliminate potential of severe burns. Do
not pipe to any area where freezing could
occur. Do not plug, valve or place any
obstruction in discharge line.
a. Must be installed if boiler is located above radiation level.
b. May be required on water boilers by certain state,
local or territorial codes or insurance companies.
c. Install low water cutoff designed for water
installations where shown in Table 10 and Figure 27.
requirements, an additional high temperature limit
is needed. Purchase and install in supply line between
boiler and isolation valve or in tapping "A."
– set according to design requirements.
– at least 20° higher than low limit, 240°F
maximum.
6. Install optional controls per control manufacturer's
instructions.
Water control locations
28
Water control tappings (see Figure 27)
Part No. 550-141-935/0215

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