Fulton Vertical Electric (FT-N) Thermal Fluid (hot oil) Heater - Manual (Page 103)

Fulton Thermal Corp.*Electric Thermal Fluid Heaters Manual* Version 2010-0423
Page 103
Developed specifically for thermal fluid system use, the Fulton
Combination/Deaerator/Expansion/Thermal Buffer Tank is a patented design. The unique combination of
the operation of these three vessels in one results in numerous advantages including: pipework
simplification, protection of thermal fluid from oxidation, ease of installation, and continuous deaeration of
fluid, avoiding pump cavitation.
Expansion Section:
The expansion section is vital to the thermal fluid system. From ambient to operating temperature, the
thermal fluid in the system will typically expand in the range of 30%, and a vessel capable of handling this
expansion is mandatory. Additional expansion section features include a liquid level switch and manual
fluid levels test connections. In the event of system fluid loss, the level in the expansion section of the
combination tank will drop, and the liquid level switch will shut the unit down. Manual low and high fluid
level test connections are always provided.
Deaerator Section:
At start up the primary purpose of the deaerator section is to remove all volatiles from the system to avoid
pump cavitation. The deaerator section also allows oxygen to be vented from the system on a continuous
basis during operation to avoid oxidation of the thermal fluid, and removes other volatile particles
generated by the fluid itself during system operation.
Thermal Buffer Section: