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1208.0 Circulators and Pumps
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Circulators and pumps shall be selected for
their intended use based on the heat transfer fluid, intended
operating temperature range and pressure. Circulators and
pumps shall be installed to allow for service and maintenance.
The manufacturer's installation instructions shall be followed
for correct orientation and installation. Motor Operated pumps
rated 600V or less shall be listed and labeled in accordance
with UL 778.
The circulator or pump shall be installed
in such a way that strain from the piping is not transferred to
the circulator or pump housing. The circulator or pump shall
be permitted to be directly connected to the piping, provided
the piping is supported on each side of the circulator or pump.
Where the installation of a circulator or pump will cause
strain on the piping, the circulator or pump shall be installed
on a mounting bracket or base plate. Where means for controlling vibration of a circulator or pump is required, an
approved means for support and restraint shall be provided.
The selection and sizing of a circulator or
pump shall be based on all of the following:
- Loop or system head pressure, feet of head (m)
- Capacity, gallons per minute (L/s)
- Maximum and minimum temperature, °F (°C)
- Maximum working pressure, pounds per square inch (kPa)
- Fluid type
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