Fulton Vertical Electric (FT-N) Thermal Fluid (hot oil) Heater - Manual (Page 27)

Fulton Thermal Corp.*Electric Thermal Fluid Heaters Manual* Version 2010-0423
Page 27
d) The connection between the tank outlet and the horizontal pump inlet run should be as
close to a vertical drop as possible. It should not contain an excessive number of bends
of length of pipe. These faults could encourage pump cavitation.
e) As noted, the inlet to the deaerator must be higher than or equal to the highest point in
the system or a pressurized system must be used.
f) The liquid level switch, supplied and shipped with the unit, must be installed and wired to
the control panel by the customer.
g) The high and low level test connections are 1/2” NPT, and are located on the end of the
tank opposite the inlet. The low level is on the center line of the expansion tank, the high
level is next to it, slightly off center. The high level rises up from the bottom of the tank
and ends four inches below the top; the low level rises two inches from the bottom of the
tank.
h) Both the high and low level connections should be piped to a safe catchment. Valves
should be installed in these lines at the catch tank.
i) Installation of the valves should be accomplished in such a manner that any flow will be
visible when the valves are open.
j) Flow from the high level test connection indicates a tank that is too full; no flow from the
low level test connection indicates too little fluid.
k) There is a 300 pound, raised face, flanged drain on the bottom of the thermal buffer
section, for the purpose of draining the tank when necessary. This should be piped with a
valve in the line, to a safe catchment. The valve specifications outlined above apply to
this valve as well.
l) An inspection opening is located at the highest point on the tank. Access to this port is
recommended but not required.
m) Refer to the maintenance schedule for recommendations on draining the buffer tank. For
positioning of all connections on tank, see the diagram labeled
Combination/Expansion/Deaerator Thermal Buffer Tank.
Warning
Once the system has been filled, any modification to the tank or connected piping
requires purging of the work area to prevent ignition of potentially flammable