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ONE DURA-MAX (MODEL DW) COMMERCIAL BOILER WITH HORIZONTAL TANK
CAUTION
TO PREVENT CONDENSATION THE MINIMUM BOILER INLET TEMPERATURE IS 100°F (38°C)
IMPORTANT
SAFETY FLOW SWITCH AS SHOWN TO PROTECT THE BOILER
IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR
FAILURE.
CAUTION
PUMP MUST BE RATED FOR SYSTEM OPERATING TEMPERA-
TURES AND PRESSURE.
SEE TABLE 7 FOR GUIDE TO PIPE AND PUMP SIZING.
* SAFETY RELIEF VALVE RATING SHOULD NOT EXCEED PRES
SURE CAPACITY OF ANY COMPONENT IN THE SYSTEM.
+ BALL VALVES ARE SHOWN FOR SERVICING BOILER,
HOWEVER, LOCAL CODES SHALL GOVERN THEIR USAGE.
INSTALL IN ACCORDANCE WITH ALL LOCAL CODES.
SEE PAGE 31 FOR
ADDITIONAL PIPING INFORMATION.
FIGURE 21
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