FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
a) The vent connection must be made in a manner that will prevent penetration of water or foreign
bodies into the tank. This connection must always terminate in a safe, well ventilated area and
has to be free of obstruction, open to atmosphere, and arranged in such a manner that, in the
event of discharge from the system, thermal uid could drain into a catch tank without danger to
personnel or property.
Non-code tanks cannot be pressurised over 0.5 barg.
b) The vent run should be the same size as the tank outlet. It should run pitch down from the outlet
of the tank to the catch tank.
c) If nitrogen is used on the system, the vent can be reduced to DN50 and should be piped with a
positive closing valve at the catch tank.
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 combination tank must be higher than or equal to the highest point in
the system or a pressurised 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 DN15, and are located on the end of the tank
opposite the inlet. The low level is on the centre line of the tank, the high level is next to it,
slightly off centre. The high level rises up from the bottom of the tank and ends
100 mm below the top; the low level rises 50 mm 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.
Installation of the valves should be accomplished in such a manner that any ow will be visible
when the valves are open.
Flow from the high level test connection indicates a tank that is too full; no ow from the low
level test connection indicates too little uid.
i) There is a PN16 anged 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 specications outlined above apply to this valve as well.
j) An inspection opening is located at the highest point on the tank. Access to this port is
recommended but not required.
k) Refer to the maintenance schedule for recommendations on draining the thermal buffer section.
For positioning of all connections on tank, see
High temperature thermal uid, steam and combustible vapours may be vented
through this connection.
!
Once the system has been lled, any modication to the tank or connected piping requires
purging of the work area to prevent ignition of potentially ammable vapours. Consult factory
prior to beginning work. Consult the MSDS for your thermal uid for ammability limits.
!
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