Fulton Vertical Coil (FT-C_S) Thermal Fluid (hot oil) Heater - Manual (Page 32)

© The Fulton Companies 2013
2-26
INSTALLATION
FTCS-IOM-2013-1114
SECTION 2
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
High temperature thermal fl uid,
steam, and combustible vapors
may be vented through the vent
connection on the combination
deaerator/thermal buff er/expansion
tank.
4
CAUTION
Non-code tanks cannot be pressurized
over 15 psig.
A system of interconnecting pipe work in the thermal buff er tank section
prevents the movement of any oil that has not cooled suffi
ciently into the
expansion section. This avoids contact of very high thermal fl uid temperature
with oxygen contained in the atmosphere, which causes fl uid breakdown. DO
NOT insulate this section.
 Sizing The Expansion Tank For The System
Expansion tank capacity is the total volume of the tank. It is necessary to have
some air space available at the top of the tank to avoid spillage or overfl ow. At
initial fi ll (for system volume calculations) the deaerator and cold seal sections
must be fi lled completely and the expansion section must be fi lled to a level of 4
inches (102 mm) to “make” the liquid level switch.
The volume between the initial fi ll level and the safe “full” level is the amount
available for expansion. That volume is used to decide which tank is suitable for
the system expansion.
 SIZING EXAMPLE
A system contains 175 gallons, including the heater, but not the tank. You select
the FT-200-L, so you add 25 gallons to 175 for a total of 200 gallons.
You look up the expansion rate for the thermal fl uid. (Assuming it is 25%), 200
gal. x 1.25 = 250 gallons, 250-200 = 50 gallon expansion.
The FT-200-L has only 46 gallons available for expansion, so the correct selection
is the FT-500-L.
Adhere to the following for installation:
1. Install tank in accordance with Fulton Thermal Corporation’s specifi cations.
2. Unless the system is pressurized, the inlet to the deaerator section must be
higher than or equal to the highest point in the system to prevent pockets
of air from collecting in system piping.
3. Take into account the head required at the circulation pump suction inlet to
avoid the possibility of pump cavitation.
4. In systems operating close to maximum fl uid temperature, ensure the tank
is elevated enough, possibly well above the highest point in the system, to
prevent pump cavitation by increasing the static head. An inert pressurizing
blanket may be considered as an alternative. See Pressurized Systems
section of this manual.
5. Provide supports for tank mounting. These should be suited for supporting
the tank by the side rails. The eyelets fi tted to the tank are for lifting only.