Fulton Alliance (FT-HC) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 19)

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SECTION 2
FTHC-IOM-2012-1001
INSTALLATION
2-13
!
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 Companies is not responsible
for any injury or damage caused by
the use of inadequate fl uid.
4
CAUTION
The weight of all piping must be
properly supported. Failure to support
piping may result in equipment
damage and/or system leakage.
Piping must take into consideration
potential for freezing interference and/
or damage as a result of expansion,
contraction, vibration, or other
movements.
Dirt, water, and/or other debris in the
piping system after welding may result
in equipment failure.
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 (see Figures 6 and 7):
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
pump, should this occur. In applications where it is desirable to design
to pressures lower than 100 psig, an alternative safeguard is to install
appropriately sized safety valves.
7. Where secondary circulating pumps are installed, ensure the system is
suitable for the aggregate head, against a closed valve, of both pumps.
8. During construction of the installation, ensure that no dirt, water, or
residue from welding is left in the system.
9. Consider expansion joints or pipe loops to accommodate thermal
expansion. Design should be per latest edition of ASHRAE Systems and
Equipment Handbook to prevent detrimental forces and stresses at
connected equipment. Thermal expansion should be calculated using the
maximum possible utilization fl uid temperature, regardless of whether the
pipe considered is in the feed or return circuit. Steel pipe will grow axially
and can be expected to expand approximately 1” over 100ft @ 100dg°F
temperature rise (1mm per meter over 100 C rise).