Fulton Hopkins (HPN) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 17)

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SECTION 2
HPN-IOM-2014-0416
INSTALLATION
2-11
!
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.
Fulton is not responsible for any
injury or damage caused by the use of
inadequate fl uid.
Non-Fulton product information is for
reference purposes only. No Fulton
document may substitute for full
review of documentation available
from the component manufacturer.
 THERMAL FLUID BREAKDOWN PREVENTION
 Multiple pressure switches and a diff erential pressure switch are used to
prevent this condition from occurring. These safeties must not be bypassed
at any time.
 Exceeding the maximum operating temperature of the thermal fl uid will
also result in thermal fl uid breakdown. Fulton heaters are equipped with a
temperature limit switch (located on the front of the panel box) to prevent
this from occurring.
 A high temperature limit switch is an over temperature safety device.
If the high temperature limit shuts down the unit, the manual reset
button on the limit switch must be pressed. The reset button on the
fl ame programmer must also be pressed to reset the unit before it can be
restarted. Refer to Maintenance section of this manual for troubleshooting
activities.
Piping Specifi cations
For piping, the basic considerations are: the design temperature, the pressure
retained by the pipe, the fl uid in the pipe, the load resulting from thermal
expansion or contraction, impact or shock loads imparted such as water hammer,
external loads, wind loads and vibration from equipment.
Adhere to the following for piping installation:
1. Ensure the arrangement of the piping and its appurtenances takes into
consideration the location of other structures and equipment adjacent to
the piping, which may result in freezing interference and/or damage as a
result of expansion, contraction, vibration, or other movements.
2. Consider the appropriate location and orientation of valves necessary
for safe operation and isolation of the piping. Valves are used in piping
systems to stop and start the fl ow of fl uids, to regulate fl ow, to prevent the
back fl ow, and to relieve excessive pressure build up in the piping.
3. Ensure all piping and piping components are suitable for the design
temperatures, pressure and fl uid used in the system.
4. Ensure all components exposed to thermal fl uid fl ow, including pipe,
valves, and screens, are not copper, copper alloys, bronze, brass,
aluminum, or cast iron. Cast iron is porous to thermal fl uids, and copper
and aluminum act as catalysts in the degradation of some thermal fl uids.
Carbon or stainless steel, or ductile iron, are recommended.
5. Ensure all pipework is constructed from seamless mild steel pipe,
conforming to ASME SA 106B or SA 53B, Schedule 40 or Schedule 80 or
equal, as required based on the design temperature and pressure of the
system.
6. If an isolating valve is completely closed, the pressure in the system will
rise to the deadhead pressure of the pump. Suitably sized pipe will enable
the system to withstand the total head generated by the circulating