FULTON FT-0080C, Инструкция по установке, эксплуатации, обслуживанию и каталог запасных частей

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FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
Page 9
2
2.7
SYSTEM CONNECTIONS
If screwed connections have to be made, e.g. to items of control equipment, then a thread sealant
suitable for use with fluids at elevated temperature must be used. Teflon tape, standard pipe dope, or
hemp and paste are not acceptable. Screw threads must be carefully and accurately cut. If possible,
new tools should be used. Threaded connections larger than DN25 are not to be used. It is
recommended that class 8.8 or better tensile steel bolts be used for all flanged joints.
2.7.2
HEATER CONNECTIONS
a) The outlet of the pump should connect directly to the inlet of the heater via an isolating valve
and pump flexible connector.
b) The heater outlet should be piped directly to the system, via an isolating valve.
c) A safety relief valve may be shipped in the parts box accompanying the electric heater, and
must be installed in the outlet manifold. On all units, the outlet of the safety relief valve must
be piped to a catch tank. The discharge flow must not be restricted, i.e. no valve should be
installed, there should be no reduction in pipe size, and the minimum number of bends possible.
The weight of the piping must be properly supported in order to prevent damage to the safety
valve. If the valve body becomes warped, leakage may result.
The system is usually filled from the lowest point, with the aid of a pump. On skid-mounted units, a
drain and fill connection is provided in the inlet piping to the pump.
FIG. 6 DRAIN AND FILL CONNECTION
2.7.1
DRAIN/FILL CONNECTION
Note: The system pump is not to be used to fill the system.